SERVICE MANUAL REVISION 0 MAY 1997 FY8-13EX-000 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
IMPORTANT THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE OF REFERENCE FOR WORK IN THE FIELD. SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER. ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
INTRODUCTION This Service Manual contains the bsic facts and figures about the plain paper copier NP6218, and is compiled to serve as a handy reference for servicing the machine in the field. The NP6218 is designed to enable fully automated copying work and may be configured with the following accessories: 1. Cassette Feeding Module-B2* 2. Cassette Feeding Module-A2* 3. Control Card IV N 4. ADF-E1 5. Staple Sorter B2/D1 6. MS-B1 7.
Chapter 9 Maintenance and Servicing provides tables of periodically replaced parts and consumables/durables and scheduled servicing charts. Chapter 10 Troubleshooting provides tables of maintenance/inspection, standards/adjustments, and problem identification (image fault/malfunction). Appendix contains a general timing chart and general circuit diagrams. In addition to the above chapters, this SERVICE MANUAL contains a set of appendixes consisting of a general timing chart and general circuit diagrams.
System Configuration The NP6218 may be configured with the following systems options: ADF-E1 Sends originals one by one from a stack set on its tray Control Card IV N Allows the user to control copy volume. Stapler Sorter B2/D1, MS-B1 Automatically sorts or (page collation) or groups up to 10 sets of copies; with the sorting function, the sorted copies may automatically be stapled. (Not applicable to MS-B1.) Cassette Feeding Module-B2 Adds an additional cassette.
1. GENERAL DESCRIPTION iv COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.0 MAR.
CONTENTS CHAPTER 1 GENERAL DESCRIPTION I. II. III. IV. FEATURES .........................................1-1 SPECIFICATIONS ..............................1-2 A. Copier ............................................1-2 1. Type ..........................................1-2 2. System .....................................1-2 3. Features ...................................1-3 4. Others.......................................1-4 B. Cassette Feeding Module-B2/ Cassette Feeding Module-A2 ........
CHAPTER 3 EXPOSURE SYSTEM I. II. III. BASIC OPERATION ...........................3-1 A. Varying the Reproduction Ratio ....3-1 LENS DRIVE SYSTEM ......................3-1 A. Outline ...........................................3-1 B. Lens Motor Drive Circuit................3-3 1. Keeping the Lens Motor Stationary .................................3-3 2. Driving the Lens Motor .............3-3 C. Basic Sequence of Operations (lens drive system; non-Direct) ......3-4 SCANNING DRIVE SYSTEM.............3-5 A.
II. 1. Outline ......................................4-16 2. Switching the Static Eliminator Bias Voltage Level ....................4-17 3. Ensuring Proper Separation of Thin Paper ................................4-17 G. Controlling Blank Exposure ...........4-18 1. Outline ......................................4-18 2. Blanking (Whiting) of NonImage Areas for Reduction.......4-19 3. Blanking (Whiting) Out the Leading/Trailing Edges and between Copies........................4-19 H.
C. Pre-Registration Stationary Jam ...5-13 D. Separation Delay Jam ...................5-14 E. Separation Stationary Jam ............5-14 F. Delivery Delay Jam........................5-15 G. Delivery Stationary Jam ................5-15 VII. DISASSEMBLY AND ASSEMBLY ......5-16 A. Pick-Up Assembly .........................5-16 1. Detaching the Pick-Up Roller Unit ...........................................5-16 2. Detaching the Pick-Up Roller ...5-19 3. Points to Note When Attaching the Pick-Up Roller .........
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS I. II. 3. Routing the Drive Belt ..............7-13 E. Cassette unit .................................7-14 1. Detaching the Pick-Up Drive Unit ...........................................7-14 2. Detaching the Cassette Motor..7-15 3. Detaching the Cassette Driver PCB ..........................................7-16 F. DC Controller PCB ........................7-17 1. Detaching the DC Controller PCB ..........................................7-17 2.
CHAPTER 10 TROUBLESHOOTING I. II. x MAINTENANCE AND INSPECTION..10-3 A. Image Adjustment Basic Procedure ....................................10-3 B. Periodical Servicing.....................10-4 STANDARDS AND ADJUSTMENTS..10-5 A. Image Adjustment .......................10-5 1. Adjusting the Image Leading Edge Margin ([3], No.305; registration ON timing) ...........10-5 2. Adjusting the Leading Edge Non-Image Width ([3], No. 306; blank shutter ON timing).....................................10-6 3.
IV. 10.The copy has white spot (vertical)..................................10-55 11.The copy has white lines (vertical)..................................10-55 12.The copy has white spots (horizontal). ............................10-56 13.The back of the copy is soiled. .....................................10-57 14.The copy has a fixing fault. ....10-58 15.The leading edge of the copy is displaced. ...........................10-58 16.The leading edge of the copy is displaced. ...........................
APPENDIX A. B. C. xii GENERAL TIMING CHART................A-1 SIGNALS AND ABBREVIATIONS......A-2 GENERAL CIRCUIT DIAGRAM .........A-3 not available COPYRIGHT © 1997 CANON INC. D. E. SPECIAL TOOLS................................A-5 SOLVENTS/OILS................................A-6 CANON NP6218 REV.
CHAPTER 1 GENERAL DESCRIPTION This chapter introduces features and specifications, and explains how the machines are operated and copies are made. I. II. III. IV. FEATURES .........................................1-1 SPECIFICATIONS ..............................1-2 A. Copier ............................................1-2 B. Cassette Feeding Module-B2/ Cassette Feeding Module-A2 ........1-5 NAMES OF PARTS ............................1-6 A. Exterior View .................................1-6 B.
CHAPTER 1 GENERAL DESCRIPTION I. FEATURES The copier becomes ready to make copies as soon as it is turned on. When fitted with options, it provides a maximum of four paper sources. 1. Multiple front loading and multifeeder for space saving. • The cassette may be slid out to the front for paper supply work. • With the adjustable cassette and the multifeeder, various types of paper may be used. 2. Office amenities and ecology.
CHAPTER 1 GENERAL DESCRIPTION II. SPECIFICATIONS A. Copier 1. Type Description Item Body Desk top Copyboard Fixed Light source Fluorescent lamp Lens Zoom Photosensitive medium OPC (ø30) 2.
CHAPTER 1 GENERAL DESCRIPTION 3. Features Specification Item Sheet, book, 3-D object (2 kg max.) Maximum original size A3 (297 × 420 mm)/LDG (11" × 17") Center reference Reproduction ratio Direct, 2R2E (Table 1-201) Zoom 49% to 204% Wait time 0 sec First copy 8.2 sec or less (11.6 sec or less at power-on; A4, Direct, non-AE, from cassette) Continuous copying 100 (max.; upper limit may be varied in service mode) Copying speed See Table 1-202. Copy size Cassette: A3/11" × 17" to A5/STMT 3.
CHAPTER 1 GENERAL DESCRIPTION 4. Others Specifications Item Operating environment Temperature 7.5°C to 32.5°C/45.5°F to 90.5°F Humidity 5% RH to 85% RH Atmospheric pressure 810.6 hPa to 1013.3 hPa (0.8 to 1 atm) Serial numbers Power supply Power consumption Noise 230 V (50Hz) UCDXXXXX Maximum 1.5 kW or less Standby 97.2 kJ per hr (27 wh average; reference only) Continuous 2088 kJ (580 wh average; reference only) Copying 49.
CHAPTER 1 GENERAL DESCRIPTION Reproduction ratio DIRECT REDUCE ENLARGE Copy size Copies/min A3 (297 × 420) 10 A4 (210 × 297) 18 A5 (148 × 210) 21 A4R (297 × 210) 14 A5R (210 × 148) 18 1: 0.500 (+1.0%) A3 → A5R 20 1: 0.707 (+1.0%) A3 → A4R 12 A4 → A5 12 1: 2.000 (+1.0%) A5R → A3 11 1: 1.414 (+1.0%) A4R → A3 10 A5 → A4 19 1: 1 (±0.5%) Table 1-202 Copying Speed Specifications subject to change without notice. B.
CHAPTER 1 GENERAL DESCRIPTION III. NAMES OF PARTS A. Exterior View q w e r t y u i Copyboard cover Power switch Clip tray Multifeeder Cassette Front door Control panel Copyboard glass Figure 1-301 q Open/close lever w Copy density correction knob e Static eliminator cleaner r Heater switch t Copy tray y Static eliminator Figure 1-302 1-6 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 1 GENERAL DESCRIPTION B. Cross Section 1. Body q w e r t y u i o !0 No. 3 mirror No. 2 mirror No. 1 mirror Scanning lamp Copyboard glass Copyboard cover Lens Exhaust fan Pre-exposure lamp Primary charging roller !1 !2 !3 !4 !5 !6 !7 !8 !9 @0 Reflecting plate No. 6 mirror Developing cylinder Developing assembly No. 5 mirror No.
CHAPTER 1 GENERAL DESCRIPTION 2. Cassette Feeding Module-A2 1 2 3 4 5 6 r Cassette 3 pick-up roller t Drive roller y Feeding roller q Cassette 2 w Cassette 3 e Cassette 2 pick-up roller Figure 1-304 1-8 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 1 GENERAL DESCRIPTION IV. OPERATION A. Control Panel q w e r t y u i o !0 !1 !2 !3 !4 !5 !6 !7 !8 !9 @0 @1 @2 Image Compose key Page Separate key Warning indicator Display % key Reset key Keypad Power switch Interrupt key Clear key Stop key q w e Max 200% A4 A5 A4 A4 A5 Autom.
CHAPTER 1 GENERAL DESCRIPTION B. Operation Mode Mode Description Image Composition Press to set/reset image composition mode. mode Page Separation mode Press to set/reset page separation mode. Interrupt mode Press to interrupt an ongoing copying session. Auto Ratio mode Press it to set/reset auto ratio mode. AE mode Press to set/re-set AE mode or user mode. Sort/staple sort/group mode Press it to select/reset sort, staple sort, or group mode. Remarks Only when an ADF (accessory) is installed.
CHAPTER 1 GENERAL DESCRIPTION C. Making Two-Sided/Overlay Copies (manual) You can make two-sided or overlay copies by manually feeding paper. You must, however, keep the following in mind when making such copies: q Be sure to orient the paper the same way for both sides when turning it over. w Make sure that the paper has not absorbed moisture. e Make sure that the paper has no curling.
CHAPTER 1 GENERAL DESCRIPTION D. User Mode 1. Outline The copier provides user mode, which allows the user to change various settings or to make various adjustments on his/her own; see Table 1-402. Menu No. Display Function Description Default settings 1 Changing the auto clear time You may set the auto clear time between 1 and 9 min in 1-min increments. Setting it to ‘0’ disables the function.
CHAPTER 1 GENERAL DESCRIPTION 2. Common Operations a. Keys to Use in User Mode • Clear Key Use it to return to the previous step; or, use it to clear a setting entered by mistake when making mode settings. • Start Key Use it to accept a selected item when making user mode settings. • AE Key Use it to return to copy mode when making user mode settings. b. Operation 1) Hold down the AE key for about 4 sec or more. • This will turn on the display, indicating “ ”.
CHAPTER 1 GENERAL DESCRIPTION Auto power-off time (min) Settings 2 2-1 5 2-2 10 2-3 15 2-4 30 2-5 60 2-6 120 2-7 Table 1-403 • The display indicates the new setting (if 10 min, indicates ‘2-3’). 5) Press the Start key. • The auto power-off time is changed, and the display returns to “ 6) Press the AE key. • The copier returns to standby state. ”. Reference: If you want to disable the auto power-off function, use service mode (See p. 10-109.). 5.
CHAPTER 1 GENERAL DESCRIPTION 7) Press the Start key. • The zoom reproduction is fine-adjusted, and the display returns to “ 8) Press the AE key. • The copier returns to standby state. ”. The fine-adjustment reproduction ratios as shown in the copy density display are as follows: ■ Zoom Fine-Adjustment (Reduce) Press the Lighter key. ■ Zoom Fine-Adjustment (Enlarge) Press the Darker key. Initial setting (±0%) Initial setting (±0%) -0.2% +0.2% -0.4% +0.4% -0.6% +0.6% -0.8% +0.8% -1.0% +1.
CHAPTER 1 GENERAL DESCRIPTION 4) Enter q or p using the keypad to specify ‘On’ or ‘Off’. • The display indicates the new setting (if Off, ‘4-0’.) 5) Press the Start key. • The auto cassette change function is turned on or off, and the display returns to “ ”. 6) Press the AE key. • The copier returns to standby state. 7. Turning On/Off the Auto Sort/Non-Sort (with ADF and sorter installed—option) ( ) 1) Hold down the AE key for 4 sec or more. • The display indicates “ ”.
CHAPTER 1 GENERAL DESCRIPTION 9. Selecting the Density Adjustment Method for Standard Mode ( 1) Hold down the AE key for 4 sec or more. • The display indicates “ ”. 2) Enter o using the keypad so that the display indicates “ ”. 3) Press the Start key. • The display indicates ‘9-1’.
CHAPTER 1 GENERAL DESCRIPTION 11. Quick Guide to User Mode Table 1-408 1-18 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 1 GENERAL DESCRIPTION E. Handling the Toner Bottle Instruct the user to dispose of any empty toner bottle as nonflamable material. ! Caution: Do not dispose of the toner bottle into fire. It may explode. V. WARNINGS AND ACTIONS • Handling the Toner Bottle Instruct the user to dispose of any empty toner bottle as nonflammable material. ! Caution: Do NOT throw the cartridges into fire; it can burst or explode. VI.
CHAPTER 1 GENERAL DESCRIPTION VII. IMAGE FORMATION A. Outline Copyboard glass Scanning lamp Lens Primary corona roller Pre-exposure lamp Fixing film Developing cylinder Cleaning assembly Pick-up (multifeeder) Transfer roller Static eliminator Pressure roller Pick-up (cassette) Figure 1-601 The copier uses an electrostatographic method to produce images and is constructed as shown in Figure 1-601.
CHAPTER 1 GENERAL DESCRIPTION The NP6218 generates images in the following eight steps. Step 1. Pre-exposure Step 2. Primary charging Step 3. Image exposure Step 4. Development (AC + positive DC) Step 5. Transfer (positive DC) Step 6. Seperation (AC + positive DC) Step 7. Fixing Step 8. Drum cleaning Static latent image formation block 3. Image exposure 2. Primary charging 4. Development 1. Pre-exposure 8. Drum Cleaning Delivery 5. Transfer 6. Separation Manual feeding Registration Cassette 7.
CHAPTER 1 GENERAL DESCRIPTION 1-22 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAY.
CHAPTER 2 BASIC OPERATION This chapter provides outlines of the copier’s various operational workings. (Note that a single rotation of the drum takes about 0.29 sec.) I. BASIC CONSTRUCTION ...................2-1 A. Functional Construction.................2-1 B. Outline of the Electrical Circuitry...2-2 C. Basic Sequence of Operations (2 copies continuous, AE) .............2-3 D. Main Motor Control Circuit.............2-4 E. Inputs to the DC Controller PCB ...2-5 COPYRIGHT © 1997 CANON INC. F.
CHAPTER 2 BASIC OPERATION I. BASIC CONSTRUCTION A. Functional Construction The copier may be divided into four blocks; namely, the pick-up/feeding system, exposure system, image formation system, and control system.
CHAPTER 2 BASIC OPERATION B. Outline of the Electrical Circuitry The copier’s principal electrical mechanisms are controlled by the microprocessor on the DC controller PCB. The microprocessor reads the input signals from the sensors and operation keys according to the stored program and generates signals used to drive such loads as motors, solenoids, and lamps. The microprocessor is capable of reading both digital and analog signals because of its built-in A/D converter.
CHAPTER 2 BASIC OPERATION C. Basic Sequence of Operations (2 copies continuous, AE) Power switch ON Copy Start key ON STBY INTR SCFW SCRV SCFW SCRV LSTR STBY AER Main motor (M1) Fixing heater Primary charging bias Transfer bias Static eliminator bias , ,, , ,, ,, ,, , 1.
CHAPTER 2 BASIC OPERATION D. Main Motor Control Circuit 1. Outline Figure 2-104 shows the circuit used to control the main motor (M1); the circuit has the following functions: q turns on and off the main motor. w controls the main motor to a specific rotation speed. The main motor (M1) is a DC motor that has a built-in clock pulse generator. When the motor rotates, it generates clock pulse signals (MMCLK*) according to the revolution of the motor.
CHAPTER 2 BASIC OPERATION E. Inputs to the DC Controller PCB 1.
CHAPTER 2 BASIC OPERATION 2. Inputs to the DC Controller PCB (2/3) DC controller PCB J601 -1 -2 -3 -4 AE sensor J307 -7 -6 -5 -4 J604-2 -1 Light adjusting sensor Cassette size sensor Control panel J356-1 -2 J701 -2 -4 -3 -1 J317 -3 -5 -4 -2 J651 -6 -5 -4 -3 -2 -1 J314 -7 -8 -9 -10 -11 -12 J801 J802 +24V AE AEREF See p. 4-27. AEVR1 AEVR2 +24V +5V See p. 4-4.
CHAPTER 2 BASIC OPERATION 3. Inputs to the DC Controller PCB (3/3) Figure 2-107 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 2 BASIC OPERATION F. Outputs from the DC Controller PCB 1. Outputs from the DC Controller PCB (1/3) DC controller PCB Door switch HTRD A See p. 6-1. Cassette heater (H4) When '0', RL102 turns on Cassette heater (H5) Composite power BP102 BP103 BP101 supply PCB +5V Anti-condensation switch (SW1) RL102 EHTRL* When '0' RL102 turns on. When L102 turns on, SW1 turns on, and heater (R1) turn on.
CHAPTER 2 BASIC OPERATION 2. Outputs from the DC Controller PCB (2/3) DC controller PCB Registration clutch Pick-up clutch Multifeeder pick-up clutch +24V J303 -6 -5 RGCLD* +24V J303 -8 -7 PUCLD1* CL1 CL2 SL1 Multifeeder holding plate solenoid SL2 Blank shutter solenoid SL3 Primary charging roller cleaning solenoid SL4 Transfer charging roller releasing solenoid SL5 Main motor When '0', pick-up clutch turns on.
CHAPTER 2 BASIC OPERATION 3. Outputs from the DC Controller PCB (3/3) DC controller PCB +24V J316 -1 Heat exhaust fan (FM1) -2 J401 -1 HEFD* When '0', heat exhaust fan on. (heat exhaust fan rotates) +24V J315 -7 Pre-exposure lamp When '0', the pre-exposure lamp turns on. -2 -6 PEXP* +24V J320 -1 Total copy count -2 When changes from '0' to '1', count is incremented.
CHAPTER 2 BASIC OPERATION G. Inputs to and Outputs from the 1-Cassette Unit Driver PCB 1. Inputs to and Outputs from the 1-Cassette Unit Driver PCB (1/1) DC controller PCB Cassette driver PCB 5V J110 -1 Cassette 2 vertical path sensor -3 PS1cu C2VPD -2 When PS1 detects paper, '1'. (when the light-blocking plate is at PS1cu, '1') 5V J110 -4 Cassette 2 paper sensor -6 PS2cu -5 J651 -6 -5 -4 -3 -2 -1 Cassette 2 size detection C2PD J110 -7 -8 -9 -10 -11 -12 When paper is present in cassette, '0'.
CHAPTER 2 BASIC OPERATION H. Inputs to and Outputs from the 2-Cassette Unit Driver PCB 1. Inputs to and Outputs from the 2-Cassette Unit Driver PCB (1/2) DC controller PCB Cassette driver PCB Cassette 2 vertical path sensor Cassette 2 sensor Cassette 3 vertical path sensor Cassette 3 paper sensor Cassette right door open/closed sensor Cassette 2 size detection Cassette 3 size detection 5V J110 -1 -3 -2 PS1cu When PS1cu detects paper, '1'.
CHAPTER 2 BASIC OPERATION 2. Inputs to and Outputs from the 2-Cassette Unit Driver PCB (2/2) Cassette driver PCB DC controller PCB +24V Cassette 2 CL1cu pick-up clutch J125 -1 -2 Cassette 3 CL2cu pick-up clutch J125 -3 -4 When '0', pick-up clutch turns on. C2PUCLD* (pick-up roller rotates) +24V Cassette unit motor M1cu When '0', the pick-up clutch turns on. C4PUCLD* (pick-up roller rotates) J114 -1 -2 -3 -4 -5 -6 +24V CMA CMA* +24V While M1cu is rotating, alternates between '1' and '0'.
CHAPTER 2 BASIC OPERATION 2-14 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAR.
CHAPTER 3 EXPOSURE SYSTEM This chapter discusses the principles of operation used for the copier’s lens drive unit and scanner drive unit. It also explains the timing at which these drive units are operated, and shows how they may be disassembled/assembled and adjusted. I. II. BASIC OPERATION ...........................3-1 A. Varying the Reproduction Ratio ....3-1 LENS DRIVE SYSTEM ......................3-1 A. Outline ...........................................3-1 B. Lens Motor Drive Circuit..............
CHAPTER 3 EXPOSURE SYSTEM I. BASIC OPERATION A. Varying the Reproduction Ratio The reproduction ratio across the photosensitive drum is varied by the lens drive system; on the other hand, the ratio around the drum is varied by the scanner drive system. The lens drive system uses a zoom lens; as shown in Figure 3-101, the position and focal distance of the lens are changed to vary the reproduction ratio across the photosensitive drum.
CHAPTER 3 EXPOSURE SYSTEM Lens motor (M3) Relay gear Change solenoid (SL1) SL1 'ON' (lens drive) SL1 'OFF' (blank exposure unit drive) Change solenoid (SL1) Lens motor (M3) Relay gear Lens cable Lens gear Lens Enlargement Lens home position detection signal (LHP) Lens motor drive signal Cam groove Change solenoid drive signal (CHSLD*) Lens home position sensor (PS2) DC controller Figure 3-201 3-2 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM B. Lens Motor Drive Circuit The lens motor (M3) is a stepping motor and rotates in response to drive power LNSC-A and LNSC-B and pulse signals LNSA, LNSA*, LNSB, and LNSB*. 1. Keeping the Lens Motor Stationary All LNSA, LNSA*, LNSB, and LNSB* are caused to go OFF, thereby stopping and retaining the motor stationary. 2. Driving the Lens Motor Pulses are applied to each phase in sequence to rotate the motor.
CHAPTER 3 EXPOSURE SYSTEM C. Basic Sequence of Operations (lens drive system; non-Direct) When a specific reproduction ratio is selected, the lens always returns to the home position before moving to the position appropriate to the selected ratio. This also holds true when the reproduction ratio is reset to Direct.
CHAPTER 3 EXPOSURE SYSTEM III. SCANNING DRIVE SYSTEM A. Driving the Scanner 1. Outline The scanner drive system is driven by the scanner motor (M2). The scanner motor changes the direction of its rotation between when the scanner moves forward and when it moves in reverse; the speed of its rotation varies according to the selected reproduction ratio. However, the speed of its rotation remains constant regardless of the reproduction ratio when the scanner is moving in reverse; 2.
CHAPTER 3 EXPOSURE SYSTEM 2. Relationship between the Scanner Sensor and Signals Scanner Scanner sensor Signal Description Forward PS1 (scanner home position sensor) Reverse SCHP Registration clutch turns on. After 0.1 sec, the scanner stops moving in reverse. Table 3-301 Reference: The registration clutch is turned on in response to a press on the Copy Start key or when the scanner starts to move forward. 3.
CHAPTER 3 EXPOSURE SYSTEM 4. Driving the Scanner Motor a. Outline The scanner motor (M2) is a 4-phase control stepping motor. The direction and the speed of the scanner motor (M2) are switched by controlling the output timing of drive power SC-COMA and SC-COMB and pulse signals A, A*, B, and B*. b.
CHAPTER 3 EXPOSURE SYSTEM 5. Scanner Operations in Page Separation Mode (non-AE, page separation, A4, 2 copies) Figure 3-304 I, II, and III shown in Figure 3-108 are controlled by the microprocessor on the DC controller PCB with reference to the scanner home position signal (falling edge of SCHP) of the first original. The microprocessor determines the distance to be traveled by the scanner according to the size of the selected cassette.
CHAPTER 3 EXPOSURE SYSTEM IV. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 3 EXPOSURE SYSTEM 2. Detaching the Scanner Cable 1) Detach the copyboard cover, right cover, left cover, upper rear cover, and lower rear cover. 2) Detach the copyboard glass. 3) Detach the control panel. 4) Detach the copyboard cover support q. q Figure 3-402 5) Remove the six screws w, and detach the upper left stay e. w w w e w Figure 3-403 6) Fix the cable in place using a pully clip (FY9-3010) Figure 3-404 3-10 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM 7) Loosen the two screws r to loosen the cable tension (both front and right). r Figure 3-405 8) Move the No. 1 mirror mount to the front to align the long hole in the front side plate and the cable fixing screw t. Then, detach the cable fixing screw t to separate the No. 1 mirror mount and the scanner cable (both front and rear). t (front) t (rear) Figure 3-406 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM 9) Remove the pully clip, and detach the scanner cable (both front and rear). 3. Assembling the Mirror Position Tool 1) Remove the screw found in position B. B A A B Position B Figure 3-407 2) Fit the screw removed in step 1) in position A, and tighten it slightly. 3) Extend the arm accommodated by the main frame unit it butts against the stopper as in Figure 3-408. 4) Tighten the screw. B B A A Position A Figure 3-408 3-12 COPYRIGHT © 1997 CANON INC.
CHAPTER 3 EXPOSURE SYSTEM 4. Routing the Scanner Cable Keep the mirror positioning tool (FY9-3009) and pulley clip (FY9-3010) handy when routing the scanner cable. Further, if you are using the mirror positioning tool, assemble it in advance by referring to “3. Assembling the MIrror Positioning Tool.” B B A A Figure 3-409 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM 1) Put the steel ball into the hole of the pulley, and wind the cable four times toward the flange and then nine times in the opposite direction; thereafter, fix it in place using the pulley clip. 2) As in w, set the mirror positioning tool between the No. 1 and No. 2 mirror mounts. 3) Loosen the screw on the mirror pulley mount as in e; then, temporarily fix the cable in position on the left stay.
CHAPTER 3 EXPOSURE SYSTEM Caution: When attaching the wire spring, pay attention to the orientation of the spring; see the diagrams below. If not attached correctly, its hook tip could interfere with the cable. Hook Wirespring Hook Wirespring Cable Cable Figure 3-411 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM 5. Adjusting the Position of the Mirrors (optical length of No. 1, 2, and 3 mirrors) 1) Keep the mirror positioning tool handy. (See “3. Assembling the Mirror Positioning Tool.”) 2) Move the No. 1 mirror mount toward the front, and align the angular hole in the front side plate and the cable fixing screw q. q (front) (rear) Figure 3-412 3) Loosen the set screw on the pulley. 4) Set the mirror positioning tool w to the No. 1 mirror mount and the No.
CHAPTER 3 EXPOSURE SYSTEM 5) Attach the scanner cable fixing to the No. 1 mirror mount using two screws e (both front and rear). 6) Tighten the screw on the pulley. 7) Detach the tool (FY9-3009). e (front) (rear) Figure 3-414 6. 1) 2) 3) Cleaning the Scanner No. 6 Mirror Open the front cover. Open the copier by operating the copier open/close lever. Detach the dust-proofing glass q and dust-proof mirror cover w. w q Figure 3-415 4) Clean the No.
CHAPTER 3 EXPOSURE SYSTEM B. Lens Drive Assembly 1. 1) 2) 3) 4) Detaching the Lens Drive Motor Detach the upper rear cover and right glass rerainer. Detach the copyboard glass. Move the No. q mirror assembly 1 to the left. Remove the two screws w, and detach the lens cover e. w w e q Figure 3-416 5) Loosen the tension on the spring r, and detach the cable t. t r Figure 3-417 3-18 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM 6) Disconnect the two connectors y from the copier’s rear. y Figure 3-418 7) Remove the two screws u, and detach the lens drive unit i. i u Figure 3-419 8) Remove the two screws, and disconnect the connector !0; then, detach the lens motor !1. Caution: Disconnect the connector !0 first before removing the screw o; otherwise, the harness and driver will come into contact with each other. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM !0 o !1 Figure 3-420 2. Routing the Lens Cable SL 2 Turn clockwise three times. 1 3 Figure 3-421 Lens Drive Assembly 1) Attach the lens cable to each pulley q while winding it around the lens pulley w as indicated in Figure 3-421. 2) Move the tension pulley e to hook the cable. 3-20 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM 3. Adjusting the Position of the Change Solenoid Make adjustments by loosening the two screws t so that the gear r is moved fully in the direction of b by the arm e when the steel core q of the solenoid is fully pushed in the direction of B by a finger, i.e., when the E-ring w comes into contact with the solenoid. 3 1 5 a b 4 2 A B Figure 3-422 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 3 EXPOSURE SYSTEM 3-22 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM This chapter discusses the principles of how images are formed. It also explains the timing at which the various units involved in image formation are operated, and shows how they may be disassembled/assembled and adjusted. I. PROCESSES .....................................4-1 A. Outline ...........................................4-1 B. Basic Sequence of Operations (image formation system)..............4-3 C. Controlling the Scanning Lamp .....4-4 D.
CHAPTER 4 IMAGE FORMATION SYSTEM I. PROCESSES A.
CHAPTER 4 IMAGE FORMATION SYSTEM Copyboard glass Lens Scanning lamp Blank exposure unit AE sensor Developing cylinder Primary charging roller DC controller PCB Composite power supply Scanning lamp ON control circuit assembly Microprocessor (Q301) High-voltage circuit assembly Microprocessor (Q512) Static eliminator Transfer roller T101 Figure 4-102 4-2 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM B. Basic Sequence of Operations (image formation system) Power switch Copy Start key ON ON STBY INTR SCFW SCRV SCFW SCRV LSTR AER ,, ,, ,, *1 Main motor/Pre-exposure lamp Primary charging Transfer charging Transfer cleaning Reference bias (ATVC) ,, , S¤ S ¥ T¤ Separation static eliminator Developing bias AC component Developing bias DC component Scanning lamp *2 *3 *2 *3 *4 1 2 3 4 *2 *4 AE only.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Controlling the Scanning Lamp 1. Outline Figure 4-104 shows the circuit that controls the scanning lamp; the circuit has the following functions: • turns on and off the scanning lamp. • controls scanning lamp pre-heating operation. • controls scanning lamp intensity. • controls the scanning lamp heater. The copier’s scanning lamp is a fluorescent lamp.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Turning On and Off the Scanning Lamp The microprocessor (Q301) on the DC controller PCB exerts control so that the microprocessor (Q512) on the composite power supply PCB generates the scanning lamp ON signal (FLON)=0 (pulse signal, 1 kHz).
CHAPTER 4 IMAGE FORMATION SYSTEM ■ Input Signals from the DC Controller to the Composite Power Supply PCB Half preheating Duty ratio (5 kHz) 25.9 % Filament voltage 2.5Vrms Full preheating Fluorescent lamp Fluorescent lamp ON I* ON II* 60 % 44.4 % 55 % 4.5Vrms 3.6Vrms 4.1Vrms *ON duty ratio of FLOW signal (in relation to 1kHz): 40% or more ................................ON I less than 40% ..............................
CHAPTER 4 IMAGE FORMATION SYSTEM ■ Scanning Lamp ON Pre-Heating Control (during copying operation I) 1KHz OFF 40% or more OFF FLON signal ON ON 5KHz 44.4% 5V FLPRHT signal 0V Figure 4-108 5. Controlling the Intensity of the Scanning Lamp (FL1) • If the intensity of the fluorescent lamp is too low at power-on, The starting power of the intensity adjustment sensor lowers, and the fluorescent lamp intensity adjustment signal (FLS) of the amplifier circuit on the DC controller increases.
CHAPTER 4 IMAGE FORMATION SYSTEM ■ Input to the Reversal Amplifier Circuit (if the intensity increased gradually) Input from intensity adjustment sensor Voltage (V) Lighter Reference voltage (4V) Darker Time (t) Reference voltage (4V) "C" "D" Figure 4-109 ■ Changes in the Duty Ratio of the FLON signal OFF ON FLON signal 'C' OFF FLON signal 'D' ON Figure 4-110 6.
CHAPTER 4 IMAGE FORMATION SYSTEM 7. Fluorescent Lamp Automatic Correction Control (ALVC control) The copier executes control (ALVC control) that automatically corrects the scanning lamp on voltage to make up for the change that otherwise could occur as a result of deterioration of the photosensitive drum. 8.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Controlling the Primary Charging Roller Bias 1. Outline Figure 4-111 shows the circuit that controls the voltage applied to the primary charging roller; the circuit has the following functions: • turns on and off the primary charging roller bias. • controls the primary charging roller bias to a constant voltage. • switches the application voltage level for the primary charging roller bias. • switches the application voltage level for the primary charging roller bias.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Turning On and Off the Primary Charging Roller Bias The microprocessor (Q512) on the composite power supply PCB generates the PDCPWN signal (pulse signal) under the control of the microprocessor master (Q301) on the DC controller PCB. In response to the signal, the secondary side of the main transformer (T101) turns on to apply a primary charging roller bias. The main transformer (T101) is driven by the drive signal (MPWM) from the microprocessor (Q512).
CHAPTER 4 IMAGE FORMATION SYSTEM 5. Application Voltage Level (APVC) for the Primary Charging Roller and Scanning Lamp On Voltage Level Automatic Correction Changes in the static latent image could cause the quality of copies; such changes, in turn, may be attributed to the following factors: • changes in the drum sensitivity • changes in the charge volume of the primary charging roller.
CHAPTER 4 IMAGE FORMATION SYSTEM E. Controlling the Transfer Roller Bias 1. Outline The copier uses a direct transfer method by a roller to transfer images to paper. For this reason, its bias control differs from that of conventional copiers, which transfer images by corona charging. The following three types of transfer roller bias are used; go through the descriptions for the function and output timing of each. a.
CHAPTER 4 IMAGE FORMATION SYSTEM Figure 4-113 shows the circuit used to control the foregoing three types of bias; the circuit has the following functions: • turns on and off the transfer roller bias • controls the transfer bias to a constant voltage • controls the correction of the transfer bias voltage level Photosensitive drum Composite power supply PCB 24V DC power supply assembly Transfer roller Transfer bias control circuit 24V Constant current circuit (ATVC) Current limiter circuit (cleaning
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Turning On and Off the Transfer Roller Bias The TFWON signal is generated under the control of the microprocessor (Q512) on the composite power supply PCB. The signal causes the secondary side of the transfer transformer (T402) to turn on, thereby applying a DC bias to the transfer roller. Table 4-102 shows combinations of signals that are used when determining the transfer roller bias.
CHAPTER 4 IMAGE FORMATION SYSTEM F. Controlling the Static Eliminator Bias 1.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Switching the Static Eliminator Bias Voltage Level The microprocessor (Q512) on the composite power supply PCB generates the JCTL signal (analog signal) under the control of the DC controller PCB. In response, the secondary side of the main transformer (T101) turns on to generate a bias for the static eliminator with the help of the main transformer (T101). The output of voltages (2.5 kV, 4.0 kV) is switched by the JLVCTL signal.
CHAPTER 4 IMAGE FORMATION SYSTEM G. Controlling Blank Exposure 1. Outline The copier uses the reflecting plate to direct the light of the pre-exposure lamp to the photosensitive drum by way of executing blank exposure, thereby blanking (whiting) out the non-image areas and areas between copies. The area of blank exposure is controlled by the two slide shutters and one open/close shutter.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Blanking (Whiting) of Non-Image Areas for Reduction In Reduce mode, the change solenoid (SL1) turns on, and the lens moves according to the selected reproduction ratio. When the change solenoid (SL1) turns off, the drive of the lens motor is transmitted to gears A and B, thereby moving the slide shutter (rear, front) for the appropriate distance to open the exposure window.
CHAPTER 4 IMAGE FORMATION SYSTEM H. Controlling the Primary Corona Roller Cleaning Mechanism 1. Outline The copier’s primary charging roller is equipped with an automatic cleaning mechanism. The automatic cleaning mechanism cleans the primary charging roller during initial rotation(INTR) after having made 250 or more copies, i.e., after executing transfer roller release control five times. 2.
CHAPTER 4 IMAGE FORMATION SYSTEM I. Releasing the Transfer Roller 1. Outline The copier’s transfer roller is equipped with a releasing mechanism. The releasing mechanism releases the transfer roller to prevent adhesion of toner to the roller under the following condition: • during post rotation (LSTR) after as many as 50 copies or more have been made (cumulative) Photosensitive drum Transfer roller Transfer roller releasing solenoid Fulcrum engaging releasing Figure 4-119 COPYRIGHT © 1997 CANON INC.
CHAPTER 4 IMAGE FORMATION SYSTEM II. DEVELOPING ASSEMBLY AND CLEANING ASSEMBLY A. Outline The copier’s photosensitive drum, developing cylinder, No. 1 stirring rod, and No. 2 stirring blade are rotated by the drive of the main motor (M1). The level of the toner inside the developing assembly is monitored by the toner sensor; when it drops below a specific level, the Add Toner indicator flashes on the display of the control panel. The No.
CHAPTER 4 IMAGE FORMATION SYSTEM B. Controlling the Toner Level Detection The level of toner inside the cartridge is monitored by the antenna sensor circuit. The toner level sensor is found inside the cartridge, and an AC bias is applied to the developing cylinder.
CHAPTER 4 IMAGE FORMATION SYSTEM q When the Level of Toner Is Adequate The presence of toner around the toner level sensor causes the AC bias generated by the sensor to be larger than the reference signal. The condition causes the output from the comparator circuit to go ‘1’ and the toner out signal (TEP*) to go ‘0’. w When the Level of toner Is Inadequate The toner around the toner level sensor decreases in amount, causing the AC bias generated by the sensor to lower.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Controlling the Development Bias 1. Outline Figure 4-204 shows the circuit used to control the development bias; the circuit has the following functions: • turns on and off the AC component of the development bias • turns on and off the DC component of the development bias • controls the voltage level of the DC component of the development bias • controls the DC component of the development bias to a constant level 2.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. Turning On and Off the AC Component of the Development Bias The microprocessor (Q512) on the composite power supply PCB generates the ACBIAS signal (pulse signal) under the control of the microprocessor master (Q301) on the DC controller PCB. In response to the signal, the development bias AC component generating transformer (T301) turns on to add the AC component of the development bias to the DC component for application. • application frequency 2400 Hz (approx.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Automatic Control of Copy Density 1. Outline The copier has an automatic density adjustment mechanism (AE), which automatically controls the DC component of the development bias according to the density of originals. As long as the original is more or less uniform in density, the AE mechanism varies the DC component of the development bias accordingly to ensure fogging-free copies.
CHAPTER 4 IMAGE FORMATION SYSTEM 27 mm (approx.) Center reference A 14 mm (approx.) 50 mm (approx.) 27 mm (approx.) Note: A indiates the position of the AE sensor Figure 4-207 (Area Read by the AE Sensor) Reference: When copies are made in AE using an ADF-E1 (accessory), the density is checked for each original. 4-28 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. AE Adjustment The copier’s AE adjustment is executed in service mode and consists of the following three types: • lamp intensity automatic adjustment (No. 301) during AE scans • copy density (development bias) standard adjustment (No. 302) during AE mode • copy density (development bias) slope adjustment (No. 303) during AE mode Item Description Adjustments No.
CHAPTER 4 IMAGE FORMATION SYSTEM III. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following when disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 4 IMAGE FORMATION SYSTEM 6) Disconnect the connectors e, r. e r Figure 4-302 7) Remove the screw t, and disconnect the connector y. 8) Pull the fluorescent lamp u slowly toward the front to detach. u y t Figure 4-303 Caution: Do not touch the fluorescent lamp. (Use lint-free paper.) COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 9) Detach the fluorescent lamp heater i from the fluorescent lamp. i Figure 4-304 2. Points to Note When Attaching the Fluorescent Lamp Heater/Scanning Lamp • Attach the heater to the lamp as follows: Light-emitting portion 60m m 1~ 5m m Heater 60m m Figure 4-305 Caution: Do not touch the fluorescent lamp. (Use lint-free paper.) Do not block the light-emitting portion by the fluorescent lamp heater. 4-32 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM Attach the scanning lamp so that its light-emitting portion (open side) is to the left when viewed from the front of the copier as shown in Figure 4-306. Light-emitting portion Figure 4-306 (front view) Caution: Do not touch the fluorescent lamp. (Use rint-free paper) Be sure to adjust the gain and AE whenever you have replaced the fluorescent lamp. (See p. 10-10.
CHAPTER 4 IMAGE FORMATION SYSTEM Reference: The fluorescent lamp heater will not operate unless the copier’s heater switch is turned on. 3. 1) 2) 3) 4) 5) Detaching the Blank Exposure Assembly Open the front cover. Pull the copier’s open/close lever to open the copier. Detach the inside cover. Detach the exhaust fan and Drum cartridge. (See “Detaching the Exhaust Fan”.) Disconnect the connector q (J315) on the DC controller PCB, and remove the two screws w.
CHAPTER 4 IMAGE FORMATION SYSTEM 4. Detaching the Blank Exposure Lamp 1) Detach the blank exposure assembly. (See “3. Detaching the Blank Exposure Assembly on p. 4-34.”) 2) Remove the four screws q, and disconnect the connector w. q q w Figure 4-310 3) Disconnect the connector e. e Figure 4-311 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 4) Remove the three screws r, and detach the blank exposure lamp t. r t Figure 4-312 5. Detaching the Blank Shutter Solenoid 1) Detach the blank exposure assembly. 2) Detach the blank shutter upper plate, and disconnect the connector q. (See “3. Detaching the Blank Exposure Assembly on p. 4-34.”) 3) Remove the E-ring w, and detach the link arm e from the blank shutter. 4) Remove the two screws r, and pull out the blank shutter solenoid.
CHAPTER 4 IMAGE FORMATION SYSTEM 6. Positioning the Blank Shutter Solenoid Adjust the position of the solenoid so that the bottom A is 7.7 ±0.5 mm on both sides of the shutter when the solenoid is moved in the direction of activation. When taking measurements, do not push down the shutter. After adjustments, make sure that the solenoid moves smoothly. A Figure 4-314a Figure 4-314b COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 7. Routing the Blanking Cable Put the spring on the outside. Slide shutter (rear) Wind 3.5 items Slide shutter (front) Figure 4-315 8. Positioning the Left/Right Margin Turn the blanking shutter adjusting screw on the copier’s front side plate shown in Figure 4-316 so that the standards are met. q clockwise turn w counterclockwise turn e a full turn moves the margin to the front. moves the margin to the rear. moves about 1 mm.
CHAPTER 4 IMAGE FORMATION SYSTEM B. Drum Unit 1. Detaching the Drum Unit 1) Open the front door. 2) Pull out the developing assembly releasing lever q toward the front, and turn it clockwise. Figure 4-317 3) Open the copier’s top unit. 4) Turn the knob w counterclockwise to detach. 5) Pull out the drum unit e toward the front. Figure 4-318 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM Caution: Take care not to damage the photosensitive drum. The photosensitive drum is highly susceptible to light, and exposure even to room lighting can lead to white spots or black bands on the copies. As a rule, do not turn on the copier with the drum unit removed; otherwise, the registration roller and the transfer guide will interfere with each other, and rotation of the registration roller during WMUP will damage the roller. 2.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Primary Corona Assembly 1. Detaching the Primary Corona Assembly 1) Detach the drum unit. 2) Slide the lock q of the top of the drum unit in the direction of the arrow. q q Figure 4-319 3) Detach the primary corona assembly unit w together with the holder while rotating it in the direction of the arrow. w Figure 4-320 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Cleaning the Cleaning Pad and the Primary Corona Roller 1) Detach the primary corona unit. 2) Place the primary corona assembly as shown in the figure, and clean the cleaning pad e with a cotton wad r or folded lint-free paper. Caution: • Dry-wipe only. Do not use water, alcohol, or solvent. • Be sure to use strokes in one direction only. e r Figure 4-321 3) Clean the primary charging roller t with lint-free paper y while rotating it. Caution: • Dry-wipe only.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. Positioning the Solenoid for the Primary Charging Roller Make adjustments by loosening the two screws used to fix the solenoid e in place and moving the solenoid e into the direction of arrow B so that r in Figure 4-323 is 4.0 ±0.2 mm when the joint q is butted against point a of the solenoid support w. q w B e a = 4.0 ± 0.2 Figure 4-323 Caution: You must make the adjustment whenever you have replaced the solenoid. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Transfer Charging Assembly 1. 1) 2) 3) 4) Detaching the Transfer Roller Open the front door. Open the copier’s top body. Detach the static eliminator. Detach the bushing q, and lift the transfer roller w to detach. Figure 4-324 Caution: Do not touch the surface of the roller. Do not soil the surface of the roller. 2. 1) 2) 3) 4) Attaching the Drum Heater Detach the front cover. Open the copier’s top body by operating the copier open/close lever.
CHAPTER 4 IMAGE FORMATION SYSTEM 5) Detach the transfer roller and the static eliminator. 6) Detach the transfer guide. 7) While butting the two heaters against the transfer guide as shown in Figure 4-326, fix them in place using two screws e; then, fix the harness using two harness bands r (front, rear). 8) Fix the harness with two SK binders t (front, rear) in place, and insert it into the transfer guide.
CHAPTER 4 IMAGE FORMATION SYSTEM 9) Connect the connector y as shown in Figure 4-328. Figure 4-328 Caution: Make sure that the spring at the rear is securely in the groove when attaching the transfer guide to the copier after attaching the drum heater. 4-46 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM E. Developing System 1. 1) 2) 3) 4) 5) Removing the Developing Assembly Open the copier’s front door. Operate the open/close lever to open the top body. Turn the locking lever q clockwise to unlock the developing assembly. Remove the screw w. Pull the developing assembly e slowly to the front. 2 3 1 Figure 4-329 2. Removing the Blade Assembly 1) Remove the developing assembly from the copier. 2) Remove the four screws q, and remove the developing cover w.
CHAPTER 4 IMAGE FORMATION SYSTEM 3) Place a newspaper or the like on the floor or a desk top, and pour out the toner from the developing assembly. 4) Remove the two screws e, and remove the blade assembly* r. * consisting of the blade and its mount. r e Figure 4-331 3. Removing the Developing Cylinder Side Seal 1) Remove the developing assembly from the copier. 2) Remove the blade assembly. Caution: The blade must be installed at high precision. Do not remove it in the field.
CHAPTER 4 IMAGE FORMATION SYSTEM 4) Remove the three screws e, and remove the terminal r, roll case t, and roll y. t r e e y Figure 4-333 5) Remove the three E-rings u, and gear i, gear o, and gear !0. u u i o !0 Figure 4-334 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 6) Remove the screw !1, and remove the butting roll !2 and roll case !3. !1 !3 !2 Figure 4-335 7) Remove the developing cylinder !4. !4 Figure 4-336 4-50 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 8) Remove the side seal !5. (both sides) !5 Figure 4-337 !5 Figure 4-338 4. Installing the Side Seal and the Blade Assembly 1) Clean the area where the side seal will be installed with alcohol. 2) Attach the side seal as indicated in Figure 4-339. Figure 4-339 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 4 IMAGE FORMATION SYSTEM 3) Check that the side seal and the container are in firm contact. 4) Push the developing blade unit attachment section all the way against the upper side and secure it with the screw. * Some spacers are glued top and bottom in reverse; however, regardless of the spacer positions, attach the unit by pushing it all the way against the Upper side. Figure 4-340 4-52 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM This chapter explains the principles used from when copy paper is picked up to when a copy is delivered in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted. I. II. III. IV. PICK-UP/FEEDING SYSTEM ............5-1 A. Outline ...........................................5-1 PICK-UP OPERATION (COPIER) ......5-3 A. Outline ..............................
CHAPTER 5 PICK-UP/FEEDING SYSTEM I. PICK-UP/FEEDING SYSTEM Fixing assembly Photosensitive drum Registration roller Multifeeder pick-up roller PS8 PS5 Feeding belt PS6 PS7 PS4 Delivery roller Pick-up roller Pick-up roller Cassette 1 PS1cu Vertical path roller Pick-up clutch PS2cu Pick-up roller Cassette 2 Accesorry PS4cu PS3cu Cassette 3 Figure 5-101 A.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Sensor No. Name PS4 Multifeeder paper sensor PS5 Cassette paper sensor PS6 Registration sensor PS7 Separation sensor PS8 Delivery sensor PS1CU Cassette 2 vertical path sensor (Accessory) PS2CU Cassette 2 paper sensor (Accessory) PS3CU Cassette 3 vertical path sensor (Accessory) PS4CU Cassette 3 paper sensor (Accessory) Table 5-101 5-2 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM II. PICK-UP OPERATION (COPIER) A. Outline When the pick-up clutch (CL2 or CL3) turns on while the main motor (M1) is rotating, the pick-up roller rotates to move paper as far as the registration roller. The copy paper is controlled so that its leading edge and the leading edge of the image on the photosensitive drum match; then, it is moved through the transfer assembly, feeding assembly, fixing assembly, and delivery assembly to reach the copy tray.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Sequence of Operations (pick-up/feeding assembly; A4, 2 copies) Figure 5-202 5-4 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM III. PICK-UP FROM THE CASSETTE FEEDING MODULE-A2 A. Pick-Up Operation When the pick-up clutch (CL1cu, CL2cu) turns on while the cassette unit motor (M1cu), the pick-up roller starts to rotate to pick up copy paper; the paper is then moved to the registration roller by the vertical path roller. (The sequence that follows is the same as when paper is picked up from the cassette in the copier.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Sequence of Operations (cassette 2; A4, 2 copies) Copy Start key ON INTR SCFW SCRV SCFW SCRV LSTR STBY Cassette 2 pick-up clutch (CL1cu) Cassette feeding unit Cassette 2 vertical path sensor (PS1cu) Cassette feeding unit motor (M1cu) Registration clutch (CL1) Copier Registration sensor (PS6) Main motor (M1) Figure 5-302 5-6 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM IV. MULTIFEEDER A. Outline The multifeeder is designed to pick up paper loaded on its tray and is capable of continuous pick-up operation. Paper on the tray is detected by the multifeeder sensor (PS5). Paper loaded on the tray is butted against the pick-up roller by the paper guide plate; the drive from the main motor (M1) is transmitted to the pick-up roller through a clutch to rotate the pick-up roller.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Identifying the Size of Paper on the Multifeeder The width of copy paper is identified by a variable resistor (VR1) which operates in response to the location of the slide guide, which is adjusted by the user to suit the size of paper. The identified width of copy paper is used for blank exposure control. The length of paper when the multifeeder is used is identified by the period of time during which the registration sensor (PS6) remains on.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Sequence of Operations (multifeeder; A4, 2 copies) Copy Start key ON INTR SCFW SCRV SCFW SCRV LSTR Multifeeder pick-up solenoid (SL2) Multifeeder pick-up clutch (CL3) Pre-registration sensor (PS6) Registration clutch (CL2) Scanner motor (M2) Figure 5-403 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM V. IDENTIFYING THE CASSETTE SIZE When a cassette is set in the cassette holder, appropriate photointerrupters (Q651, Q652, Q653, Q654) turn on or off. The microprocessor on the DC controller PCB identifies the presence/absence of a cassette based on the combinations of the photointerrupters which are either on or off (Table 5-501); accordingly, the microprocessor controls where the scanner must be reversed or when to execute blank exposure.
CHAPTER 5 PICK-UP/FEEDING SYSTEM To change the cassette size, you must not only move the guide plate (horizontal, vertical) inside the cassette to suit the copy paper but also move the paper size lever located toward the front of the cassette (Figure 5-501) to the left or right so that the arrow points to the appropriate paper size. Caution: A discrepancy between the size set by the paper size lever and the size of copy paper will result in jams or soiling because of the wrong copying sequence.
CHAPTER 5 PICK-UP/FEEDING SYSTEM VI. IDENTIFYING JAMS As many as six (3 in the cassette feeding unit) are used to monitor the movement of copy paper: • registration sensor (PS6) • separation sensor (PS7) • delivery sensor (PS8) A jam is identified in terms of the presence/absence of paper at the respective sensors at such times as stored in the microprocessor.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Pre-Registration Timing Jam Copy paper reaches the registration sensor (PS6) before a specific period of time after the pick-up clutch (CL2) has gone on because of feeding problems. Copy Start key ON STBY Jam indicator (flashing) INTR SCFW SCRV SCFW Pck-up clutch (CL2) 0.8 sec 0.8 sec Jam check Normal Error Registration sensor (PS6) Main motor (M1) Figure 5-602 Pre-Registration Timing Jam Sequence C.
CHAPTER 5 PICK-UP/FEEDING SYSTEM D. Separation Delay Jam Copy paper does not reach the separation sensor (PS7) within a specific period of time after the registration clutch (CL1) has gone on because of feeding problems. Jam indicator (flashing) SCFW SCRV SCFW SCRV Registration clutch (CL1) 1.1 sec 1.1 sec Jam check Normal Error Separation sensor (PS7) Main motor (M1) Figure 5-604 Separation Delay Jam Sequence E.
CHAPTER 5 PICK-UP/FEEDING SYSTEM F. Delivery Delay Jam Copy paper does not reach the delivery sensor (PS8) within a specific period of time after it has moved past the separation sensor (PS7) because of feeding problems. Jam indicator (flashing) SCFW SCRV SCFW SCRV LSTR Separation sensor (PS7) 2.5 sec 2.5 sec Jam check Normal Error Delivery sensor (PS8) Main motor (M1) Figure 5-606 Delivery Delay Jam Sequence G.
CHAPTER 5 PICK-UP/FEEDING SYSTEM VII. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3) Open the lower right cover. 4) Remove the two screws w, and pull out the paper guide plate toward the front. Figure 5-702 Note: You will have sufficient access to the pick-up roller and the bushing at the rear in this condition. 5) Push in the pick-up roller e from the direction of step 4) toward the rear, and remove the bushing r while lowering it to the lower left. Figure 5-703 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Figure 5-704 6) Push in the bushing t at the rear toward the front, and lower the spring pressure to remove the pick-up unit toward the left of the copier. Figure 5-705 Note: When removing the pick-up roller Assembly, separate the right side black bushing from the key. 5-18 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Figure 5-706 Caution: Check that the paper registration sensor (PS 6) is properly seated after this procedure is completed. 2. Detaching the Pick-Up Roller 1) Detach the pick-up roller unit. (See “1. Detaching the Pick-Up Roller Unit” on p. 514.) 2) Remove the E-ring q and the E-ring w; then, pull out the pick-up roller e together with the collar. Caution: Take care not to drop the pin found toward the rear. e q w Figure 5-707 COPYRIGHT © 1997 CANON INC.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Points to Note When Attaching the Pick-Up Roller When attaching the pick-up roller q, attach it so that the side w shown in Figure 5708 is toward the rear. w q Figure 5-708 4. Detaching the Pick-Up Clutch 1) Detach the main motor unit. (See “1. Detaching the Main Motor Unit” on p. 7-11.) 2) Remove the two screws q, and detach the connector mount w. Figure 5-709 5-20 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3) Disconnect the connector e, and remove the clip ring r; then, detach the pick-up clutch t. Figure 5-710 5. Detaching the Separation Pad 1) Open the right door. 2) Remove the two screws q, and detach the separation cover w. Figure 5-711 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3) Remove the two screws e, and detach the separation pad unit r. Figure 5-712 6. Adjusting the Left/Right Registration Make adjustments so that the position of the image is as shown in Figure 5-714 when the Test Sheet is copied in Direct. a. Pick-Up from the Cassette Turn the screw q shown in Figure 5-713 to adjust the position of the cassette hook plate. standard: 0 ±1.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Multifeeder Assembly 1. Detaching the Multifeeder Assembly 1) Open the right door. 2) Remove the two screws q, and shift the multifeeder assembly w toward the front to detach. Figure 5-715 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. 1) 2) 3) Detaching the Multifeeder Pick-Up Roller Unit Open the right door. Remove the E-ring q, and pull out the bushing w. Remove the two screws e. q w e Figure 5-716 4) Remove the screw r, and detach the roller cover t. t r Figure 5-717 5-24 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5) Shift the multifeeder pick-up roller unit y toward the rear to detach. Figure 5-718 3. Detaching the Multifeeder Pick-Up Roller 1) Detach the multifeeder pick-up roller unit. (See “2. Detaching the Multifeeder Pick-Up Roller Unit on p. 5-22.”) 2) Remove the stop ring q (plastic), and pull out the pick-up roller w together with the collar. Caution: Take care not to drop the pin found at the rear. q w Figure 5-719 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4. Points to Keep Note When Attaching the Multifeeder Pick-Up Roller When attaching the multifeeder pick-up roller q, make sure that the side with a cross w on the collar is toward the rear. 2 1 (front of copier) Figure 5-720 5. Detaching the Separation Pad 1) Open the upper right door. 2) Remove the two screws q, and detach the separation pad w. Caution: At this time, take care not to lose the spring on the separation pad assembly.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 6. Detaching the Multifeeder Drive Unit 1) Detach the multifeeder assembly. (See “1. Detaching the Multifeeder Assembly on p. 5-21.”) 2) Detach the connector mount. 3) Remove the screw q. Figure 5-722 4) Remove the screw w, and disconnect the connector e; then, detach the multifeeder drive unit r. Figure 5-723 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 7. 1) 2) 3) Detaching the Multifeeder Clutch Detach the multifeeder drive unit. (See “6. Multifeeder drive Unit on p. 5-25.”) Remove the E-rings q w and screws e r t; then, detach the support mount. Detach the multifeeder pick-up clutch y. Figure 5-724 5-28 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 8. Positioning the Multifeeder Assembly (paper guide plate cam) Temporarily fix the screw equipped with a hex nut on the spring clutch assembly, and rotate the control ring. Make adjustments so that the hole in the cam and the hole in the multifeeder drive unit match as shown in Figure 5-725 when the claw is engaged with the solenoid plate; then, fix in position. Figure 5-725 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 9. Adjusting the Left/Right Registration If the right/left registration is not correct when copies are made using the multifeeder, loosen the screw q, and adjust the position of the tray. q Figure 5-726 10. Points to Note When Attaching the Multifeeder Assembly Rack Plate Attach the rack plate of the multifeeder to the pulley while both its right and left are fully open. 5-30 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Registration Roller Assembly 1. Detaching the Registration Clutch 1) Detach the connector cover or the lattice connector 2) Remove the clip ring q, and disconnect the connector w; then, detach the registration clutch e. Figure 5-727 2. Detaching the Upper Registration Roller 1) Detach the registration clutch. (See “1. Detaching the Registration Clutch on p. 529.”) 2) Remove the spring q (front) and spring w (rear). Figure 5-728 COPYRIGHT © 1997 CANON INC.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Figure 5-729 Caution: Take care not to misplace the springs (front, rear). 3) Lift the upper registration roller e to detach. Figure 5-730 5-32 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Detaching the Lower Registration Roller 1) Detach the upper registration roller. (See “2. Detaching the Upper Registration Roller on p. 5-29.”) 2) Open the lower right door, and remove the two screws q to shift the pick-up guide w toward the right side of the copier. Figure 5-731 3) Remove the E-ring e (front), and shift the bushing r. 4) Detach the registration roller t. Figure 5-732 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM D. Feeding Assembly Be sure to detach the cartridge before detaching the feeding assembly. 1. Detaching the Feeding Belt 1) Detach the lower fixing unit. (See “8. Detaching the Lower Fixing Unit” on p. 6-23.) 2) Remove the three screws q, and shift the feeding retention plate w. Figure 5-733 3) Disconnect the connector e, and shift the feeding retention plate w. Figure 5-734 5-34 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) Detach the feeding spacer r by pulling it toward the fixing assembly. Figure 5-735 5) Detach the static eliminator. 6) Detach the feeding spacer t from the hook (arrow). Figure 5-736 Caution: Take care not to touch the transfer roller. Do not damage the area where the feeding spacers are in contact. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM E. Cassette Feeding Module 1. Detaching the Copier from the Cassette Feeding Module 1) Disconnect the copier’s power plug. 2) Disconnect the connector q of the cassette feeding module. q Figure 5-737 3) Hold the copier’s grips, and detach the copier from the cassette feeding module. 2. Detaching/Attaching the Pick-Up Roller See p. 5-14 “1. Detaching the Pick-Up Roller Unit”, p. 5-17 “2. Detaching the Pick-Up Roller” and p. 5-18 “3.
CHAPTER 6 FIXING SYSTEM This chapter explains the principles used to fuse toner images to transfer medium in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted. I. BASIC OPERATIONS.........................6-1 A. Outline ...........................................6-1 B. Controlling the Fixing Heater Temperature ..................................6-3 C.
CHAPTER 6 FIXING SYSTEM I. BASIC OPERATIONS A. Outline The drive roller of the fixing assembly is driven by the main motor (M1). When the drive roller rotates, the fixing film rotates and, in conjunction, the pressure roller rotates. Part of the inside of the fixing film is heated by the fixing heater.
CHAPTER 6 FIXING SYSTEM +5V Composite power supply PCB Relay (RL101) PWSW* Thermal fuse FU1 Fixing heater end temperature detection TH2 Fixing heater end overheating detection circuit HTNG TH2 Microprocessor TH1 Fixing heater H1 TH1 Fixing heater temperature etection Fixing heater overheating detection circuit HTRD HTON* Heater ON detection PCB Fixing heater driver PCB DC controller PCB Figure 6-102 6-2 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM B. Controlling the Fixing Heater Temperature The fixing heater remains off while the copier is in standby state. To prevent fixing faults caused by low temperature, its temperature is controlled in any of the following three modes depending on the temperature at the time copying is started (as measured by the main thermistor TH1) and the number of copies to be made in continuous mode: a.
CHAPTER 6 FIXING SYSTEM Reference: Normally, control 2 is used. Use control 1 to increase the control temperature if a fixing fault occurs; or use control 3 to lower the control temperature if offset occurs. (See the p. 10-32.) Figure 6-103 6-4 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM C. Controlling the Supply Power for the Fixing Heater The temperature of the fixing heater is controlled by controlling the power supplied to the fixing heater. The resistance of the plane-shaped heater used as the fixing heater may show some variation depending on which production lot it comes from. For this reason, whenever you have replaced the copier’s heater, you must store the resistance value in service mode (No. 304; see p.
CHAPTER 6 FIXING SYSTEM D. Detecting Overheating at the End of the Fixing Heater A sub thermistor (TH2) is provided at the end (rear) of the copier’s fixing heater to monitor overheating. This consideration to prevent damage to the fixing film caused by overheating of the area where paper (smaller than B4) does not come into contact. When TH2 registers 250°C or more, the distance between copies is increased to facilitate discharge of heat by the fixing heater, thereby preventing overheating.
CHAPTER 6 FIXING SYSTEM F. Correcting Displacement of the Fixing Film 1. Outline The fixing film at times becomes displaced toward the front or rear as it keeps turning. To correct such displacement, the copier is equipped with a correction mechanism. The control is executed by the fixing film sensor (PS9), which detects the position of the film, and the fixing film motor (M4), which physically corrects displacement.
CHAPTER 6 FIXING SYSTEM The fixing film sensor (PS9) is used to detect the position of the fixing film and found at the end of the film. The rear (sensor side) of the fixing film is provided with a cut as shown in Figure 6106 so that the fixing film sensor continuously goes on and off. Normally, the on and off periods of the sensor are identical as long as the fixing film remains centered.
CHAPTER 6 FIXING SYSTEM Displacement of the fixing film is physically corrected by the fixing film motor (M4). When it identifies displacement of the fixing film, the DC controller rotates the fixing film motor to move the rear of the tension roller up and down, thereby moving the fixing film to the center to correct the displacement. When the fixing film becomes displaced toward the rear, the tension roller is moved down to move the fixing film toward the front.
CHAPTER 6 FIXING SYSTEM 2. Controlling the Fixing Film Motor The fixing film motor is a stepping motor, and is rotated by the drive signal FMD and pulse signals FFA, FFA*, FFB, and FFB*. When FMD is ‘1’, the drive voltage FFCA and FFBC are imposed; the motor starts to rotate when pulses are applied to each phase in specific sequence. The motor is rotated in reverse by applying these pulses in reverse order.
CHAPTER 6 FIXING SYSTEM II. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassemblig/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 6 FIXING SYSTEM 2. Detaching the Upper Fixing Unit 1) Open the copier’s front cover. 2) Open the copier’s top body. 3) Remove the two screws q, and detach the fixing assembly cover w. q w Figure 6-202 4) Disconnect the four connectors e, and remove the screw r. r e Figure 6-203 6-12 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 5) Open the fixing shutter t, and put the screw removed in step 4) into the hole y in the front side plate. y t Figure 6-204 6) Pull out the upper fixing unit toward the rear. Caution: Do not touch the fixing film. 3. Detaching the Fixing Film, Tension Roller, Drive Roller, Fixing Cleaning Brush, and Fixing Heater Unit Caution: Before going through the steps, make sure that the heater and the heater connector have cooled sufficiently. 1) Detach the upper fixing unit. (See “2.
CHAPTER 6 FIXING SYSTEM q w Figure 6-205 3) Remove the two E-rings e and the two washers r. 4) Remove the screw t. er t Figure 6-206 6-14 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 5) Release the pressure by positioning the screw t as shown in Figure 6-207. 6) Remove the screw y, and detach the bushing u. y u t Figure 6-207 7) Remove the screw i, and detach the bushing o; then, detach the upper fixing top side plate !0. i !0 o Figure 6-208 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 8) Release the pressure by positioning the screw y and the bushing (rear) as shown in Figure 6-209. y !1 Figure 6-209 9) Pull out the fixing film !2 toward the front. 10) Detach the tension roller !3. !2 !3 Figure 6-210 6-16 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 11) Remove the screw !4, and detach the fixing film sensor !5. !5 !4 Figure 6-211 12) Remove the E-ring !6. !6 Figure 6-212 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 13) Remove the washer !7 and the bushing !8, and detach the drive roller !9. !9 !7 !8 Figure 6-213 14) Life the delivery side, and detach the fixing cleaning brush @0. @0 Figure 6-214 15) Remove the two screws @1, and detach the cover @2. @2 @1 Figure 6-215 6-18 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 16) Remove the two screws @3, and detach the fixing film motor unit @4. @3 @4 Figure 6-216 17) Remove the screw @5, and detach the cover @6. 18) Remove the screw @7, and disconnect the heater connector @8. Caution: If you are removing the screw @7, you must first make sure that the heater connector has cooled. The screw @7 is a special screw; take care not to lose it. 19) Remove the C-ring @9, and detach the bushing #0, leaving the fixing heater behind.
CHAPTER 6 FIXING SYSTEM 4. Points to Note When Attaching the Fixing Film • Make sure that the cut off is toward the rear. • Make sure that the front side is aligned with the groove of the heater. Film edge Figure 6-218 5. Points to Note When Attaching the Heater Connector • When attaching the heater connector to the fixing heater, take care not to damage the heater.
CHAPTER 6 FIXING SYSTEM 6. Points to Note When Replacing the Fixing Upper Unit • If you have replaced the upper fixing unit, you must store the resistance of the heater in service mode (No. 304; see p. 10-31.) Caution: Do not touch the surface of the heater. 7. Adjusting the Fixing Film Drive Roller Pressure If a fixing fault occurs, be sure to go through the following to adjust the pressure of the drive roller. 1) Detach the fixing cover. 2) Detach the inside cover of the copier’s front side.
CHAPTER 6 FIXING SYSTEM 13) Press ‘4’ on the keypad; when the display indicates ‘404’, press the Start key. • The copier enters fixing tension roller mode (404). • The fixing tension roller becomes fixed, and the fixing film rotates idly. • The count indicator indicates how long the fixing film sensor has remained on. Caution: If the copy count indicator keeps indicating ‘0’ or ‘528’ during adjustment, immediately press the Stop key to de-activate service mode.
CHAPTER 6 FIXING SYSTEM 8. Detaching the Lower Fixing Unit 1) Detach the delivery roller. (See “1. Detaching the Delivery Roller.” on p. 6-28.) 2) Detach the delivery cover. 3) Remove the screw q, and detach the fixing shutter open/close block w. Figure 6-222 4) Remove the E-ring e, and detach the lower fixing unit r. Figure 6-223 Caution: Do not touch the surface of the fixing cleaning roller or the lower fixing roller. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 9. Detaching the Separation Claw/Lower Fixing Claw and Fixing Cleaning Roller 1) Detach the front door. 2) Remove the screw q, and detach the separation claw unit w. e Figure 6-224 3) Detach the separation claw e from the separation claw unit. Caution: Take care not to misplace the spring. 4) Detach the lower fixing roller r together with the bushing t. r e Figure 6-225 6-24 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 5) Detach the bushing y found at the front, and detach the HIGH-TEMPERATURE WARNING cover u. · ····· ········ · ···· ····· ········ · ···· ·· ·· · ········ ···· · ····· ········ ···· u y Figure 6-226 6) Lift the fixing cleaning roller to detach. 10. Adjusting the Lower Fixing Roller Nip If fixing faults occur, make the following adjustments. The nip is correct if as shown below; otherwise, turn the bolt to make adjustments.
CHAPTER 6 FIXING SYSTEM a. Measuring the Nip Measure the nip immediately after turning on the copier before the beginning of a work day. 1) Open the copyboard cover, and make a solid black copy in A4. 2) Place the copy in the multifeeder with the solid black face up. 3) Press the service mode switch (SW302) using a hex key. • The copier enters service mode, and the display indicates ‘1’. 4) Press ‘4’ on the keypad. • The display indicates ‘4’. 5) Press the AE key.
CHAPTER 6 FIXING SYSTEM B. Delivery Assembly 1. 1) 2) 3) Detaching the Delivery Roller Open the copier’s top body. Remove the E-ring q. Shift the bushing w (rear) and bushing e (front); then, detach the delivery roller r. Figure 6-228 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 6 FIXING SYSTEM 6-28 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS This chapter shows the copier’s external parts, and explains the principles used for the copier’s various control mechanisms in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted. I. II. POWER SUPPLY ...............................7-1 A. Outline ...........................................7-1 B. Power Supply Circuit Assembly.....7-2 C.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS I. POWER SUPPLY A. Outline Figure 7-101 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS B. Power Supply Circuit Assembly The copier’s power supply assembly is a composite power supply circuit which uses a single main transformer (T101) as the source of DC power, high-voltage power, and power for the fluorescent lamp. AC power is supplied to the DC power supply assembly when the power switch (SW829) and the door switch are turned on.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS Figure 7-102 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS C. Detecting Errors in the Power Supply PCB The microprocessor (Q512) on the composite power supply PCB either displays an error message on the display by communicating with the DC controller or flashes LED501 to indicate the presence of an error if any of the following is identified. 1.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS D. Protection Mechanisms for the Power Supply Circuit The composite power supply PCB is equipped with an overcurrent detection circuit; if a short circuit occurs in a load for some reason, the protection mechanism is activated to stop the output. When the output is cut out, you may reset the output by opening the front door to turn off the door switch, correcting the load, and turning on the door switch and power switch (SW829) once again.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS II. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassemblig/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS o Right cover !2 Lower right cover !0 Upper rear cover !3 Lower right back !1 Rear cover Figure 202 cover Note: Detach the covers when cleaning, inspecting, or repairing the inside of the copier as necessary. Covers that may be detached merely by removing their respective mounting screws are omitted from the discussion.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS When attaching the copyboard glass, make sure that it is firmly in contact with the vertical size plate without a gap to prevent intrusion of foreign matter. Figure 7-204 7-8 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS B. Control Panel 1. Detaching the Control Panel 1) 2) 3) 4) 5) 6) 7) 8) Detach the copyboard glass. Detach the upper left cover. Open the front door. Pull the copier’s open/close lever to open the copier. Detach the upper rear cover. Detach the right cover. Detach the left cover. Remove the five screws q, and detach the inside cover w. Figure 7-205 9) Disconnect the two connectors r (J309, J310) on the DC controller PCB; then, detach the control panel t.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS C. Fans 1. Detaching the Exhaust Fan 1) 2) 3) 4) Open the front door. Pull the copier’s open/close lever to open the copier. Detach the DC controller PCB. (See “1. Detaching the DC Controller PCB” on p. 7-17.) Remove the screw q at the copier’s rear, and remove the two screws w at the front. q w Figure 7-208 Figure 7-209 5) Pull out the exhaust fan assembly e toward the front while supporting it.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS D. Main Motor/Main Drive Assembly 1. Detaching the Main Motor Unit 1) Detach the rear cover. 2) Disconnect the two connectors q, and remove the three screws w; then, detach the main motor unit e. Figure 7-212 2. Detaching the Main Drive Assembly 1) 2) 3) 4) 5) 6) Open the front door. Pull out the drum cartridge. Detach the multifeeder unit. Detach the rear cover. Detach the main motor.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 7) Remove the screw r, and detach the composite power supply support plate t. Figure 7-214 8) Detach the belt from the belt tensioner y of the fixing drive assembly. Figure 7-215 9) Turn the pulley i clockwise, and detach the belt o. Figure 7-216 7-12 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 10) Remove the E-ring !0 and clip ring !1; then, detach the bushing !2. In this condition, detach the gear and pulley !3 from the main drive assembly. Figure 7-217 3. Routing the Drive Belt Route the drive belt attaching them to the pulley and the tensioner as shown in Figure 4-218. Figure 7-218 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS E. Cassette unit 1. Detaching the Pick-Up Drive Unit 1) Detach the rear cover and right cover. 2) Remove the screw q. q Figure 7-219 3) Remove the screw w, and detach the harness guide e. w e Figure 7-220 7-14 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 4) Remove the four screws r, and disconnect the two connectors t; then, detach the pick-up drive unit y. r t t r y r Figure 7-221 2. Detaching the Cassette Motor 1) Detach the rear cover. 2) Remove the two screws q, and disconnect the connector w (J114); then, detach the motor e. q e w q Figure 7-222 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 3. Detaching the Cassette Driver PCB 1) Detach the rear cover. 2) Disconnect all connectors from the cassette driver PCB q. 3) Remove the three screws w, and detach the driver PCB q. w q Figure 7-223 7-16 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS F. DC Controller PCB 1. Detaching the DC Controller PCB 1) Disconnect the connector of the DC controller. 2) Remove the four screws q, and detach the DC controller PCB together with its mount. Figure 7-224 2. Points to Note When Replacing the DC Controller PCB • When sending the DC controller PCB to the workshop or factory, put it in a conducting bag while keeping it intact with the mount.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS G. Composite Power Supply PCB 1. 1) 2) 3) Detaching the Composite Power Supply PCB Detach the lower rear cover and the delivery cover. Remove the screw q, and detach the switch support plate w. Remove the screw e, and detach the power cord cover 1 r. Figure 7-225 4) Remove the screw t, and shift the power cord cover 2 y. 5) Disconnect the AC connector u, and remove the screw i to detach the grounding wire o. Figure 7-226 7-18 COPYRIGHT © 1997 CANON INC.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 6) Remove the three screws !0, and detach the power cord mount !1. Figure 7-227 7) Disconnect all connectors from the composite power supply PCB. 8) Remove the screw !2, and detach the grounding wire !3; then, detach the harness guide !4 from the power supply side plate. Figure 7-228 9) Remove the screw !5, and detach the composite power supply PCB !6. Figure 7-229 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. Points to Note When Handling the Composite Power Supply PCB • Some capacitors used on the PCB may retain charges even when the copier remains off. For this reason, you must take care never to short the terminals of the capacitor whenever you have detached the PCB. • Enter the settings (Nos. 315 through 318) recorded on the label attached to the composite power supply (service part) in service mode. (See p. 10-103) 7-20 COPYRIGHT © 1997 CANON INC.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS H. AE Sensor PCB 1. Points to Note When Replacing the AE Sensor • After replacement, perform the following; see p. 10-11: q Adjust AE. I. Intensity Sensor PCB 1. Points to Note When Replacing the Intensity Sensor • After replacement, perform the following; see p. 10-11: q Adjust the intensity of the scanning lamp; and w Adjust AE. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 7-22 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAR.
CHAPTER 8 INSTALLATION This chapter introduces requirements for the site of installation, and shows how the copier may be installed using step-by-step instructions. I. II. III. IV. SELECTING THE SITE ......................8-1 UNPACKING AND INSTALLING THE COPIER......................................8-2 A. Unpacking and Removing Fixings ...........................................8-2 B. Turning On the Copier ...................8-5 C. Checking the Images and Operations .....................................
CHAPTER 8 INSTALLATION I. SELECTING THE SITE Keep the following in mind when selecting the site of installation; if possible, pay a visit to the user’s before the delivery of the machine. 1. The site must provide a power outlet that may be used exclusively for the machine and that meets the rating ±10%. 2. The site must be 7.5°C/45.5°F to 30°C/86.0°F in temperature and 10% RH to 80% RH in humidity. In particular, avoid areas near water faucets, boilers, humidifiers, or refrigerators. 3.
CHAPTER 8 INSTALLATION II. UNPACKING AND INSTALLING THE COPIER When a metal part is brought in from a cold to warm environment, droplets of water can develop on the surface of the part. This phenomenon is called condensation, and condensation in a copier can lead to faulty images. If the copier has been moved from a cold to warm place, leave it alone for about one hour or more before unpacking it. A. Unpacking and Removing Fixings Step Work Remarks 1 Unpack the copier.
CHAPTER 8 INSTALLATION Work Step Remarks 6 Open the copyboard cover, and remove the protective sheet. 7 Open the front cover, and push the lever found on the left side up in the direction of the arrow to open the copier’s top body. 8 Pull up the spacer (front and rear, 1 pc. each) of the fixing roller in the direction of the arrow until a click is heard. 9 Remove the two pieces of cardboard (cushion) from the feeding assembly. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION Step Work 10 Pull the developing locking lever toward the front, and turn it clockwise to release it. 11 Remove the knob, and remove the dummy drum from the copier. (Keep the knob for later.) 12 Remove the screw, and remove the developing assembly stopper. 13 Remove the developing assembly, and check that the developing cylinder is free of scratches or dirt. 14 Install the developing assembly, and attach the developing assembly stopper with a screw.
CHAPTER 8 INSTALLATION B. Turning On the Copier Step Work 1 Connect the power plug to the power outlet. Remarks 2 Turn on the power switch. 3 Turn off the power switch. 4 Supply toner according to the instructions given on the toner supply label attached behind the front door. 5 Release the developing assembly by the developing assembly locking lever. 6 Install the drum unit. 7 Lock the developing assembly, and close the copier’s top unit.
CHAPTER 8 INSTALLATION Step Work 9 Select service mode No. 313/314, and enter the settings recorded on the drum label. To select service mode, • Press the service mode switch (SW302) with a hex key. Select ‘3’ of the mode by pressing ‘3’ on the keypad and AE key; then, select ‘No. 3 xx’ by pressing ‘x’ and ‘x’ on the keypad and the start key. Remarks To enter settings, • Select ‘No. 313’ in service mode, and enter the setting recorded on the label (PRIMARY) using the keypad.
CHAPTER 8 INSTALLATION Work Step Remarks 13 Turn on the power. 14 Execute ‘No. 412’ in service mode. • Press the service mode swicth (SW302), ‘4’ on the keypad, AE key, ‘1’ and ‘2’ on the keypad, and Start key in sequence. 15 Set the settings for user mode and settings mode in service mode to suit the needs of the user. 16 Tailor the cassette to suit the desired size by operating the size guide plate and size detecting lever; then, attach the size label. See “E. Changing the Size.
CHAPTER 8 INSTALLATION C. Checking the Images and Operations Step Work Check/Remarks 1 Place the Test Sheet on the copyboard, and check the copies. • Make sure there is no abnormal sound. • Check the copy images for each standard reproduction ratio. • Make sure that as many copies as specified are made normally. • If the copy image is faulty, perform the “Image Adjustment Basic Procedure.” 2 Make copies in manual mode. Make sure that the copying operation is normal.
CHAPTER 8 INSTALLATION D. Attaching the Drum Unit Work Step Check/Remarks 1 Unpack the drum unit, and remove the light-blocking sheet. 2 Remove the primary charging roller releasing spacer. Releasing spacer Releasing spacer Take care not to damage the surface of the drum and not to touch the primary charging roller. 3 Set the drum unit to the copier, and fix it in position using the knob used to keep the dummy drum. Be sure to insert the drum unit straight along the copier’s rail.
CHAPTER 8 INSTALLATION E. Changing the Cassette Size Change the cassette size to suit the user’s needs. 1) Slide the cassette out of the copier. 2) Move the length plate inside the cassette to suit the length of the paper size. A5 STMT A4R LTR R B5R MTR LTR ST /A5R A4 Figure 8-201 3) Move the width plate inside the cassette to suit the width of the paper to be used. A5 STMT A4R LTR R B5R MTR LTR ST /A5R A4 Figure 8-202 8-10 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION 4) Move the paper size lever found toward the front of the cassette so that it is aligned with the size of the paper to be used. U STMTRLTRR STM LGL LTR 11x17 A5R B5R A4R A B B A A Figure 8-203 Caution: Failure to adjust the paper size lever will lead to jams or soiling. 5) Take out the paper size plates for the cassette, and pick out the four plates representing the most frequently used size; attach the labels. A3 A4 R A5 R A4 Figure 8-204 COPYRIGHT © 1997 CANON INC.
CHAPTER 8 INSTALLATION 6) Set the paper size plates selected in step 4). After setting the size plate, make sure it corresponds to the paper size you have selected. Figure 8-205 Caution: If you are setting the plate for the position representing the universal (u) cassette, you must perform the work described for “universal cassette paper size setting (505); see p. 10-44.
CHAPTER 8 INSTALLATION III. RELOCATING THE COPIER If you must relocate the copier by truck or using other means of transportation, perform the following work: Step Work 1 Move the lens to the Direct position. 2 Take out the drum unit. 3 Fix the scanner in place. 4 Tape the front door and delivery assembly in place. 5 Place A3 copy paper on the copyboard glass, and tape the copyboard cover in place. COPYRIGHT © 1997 CANON INC.
CHAPTER 8 INSTALLATION IV. REPLACING THE DRUM UNIT Go through the following when replacing the drum unit: Step Work 1 Turn off the copier, and open the front door and the copier’s top unit. 2 Release the developing assembly, and remove the knob to remove the drum unit. 3 Unpack the new drum unit, and remove the light-blocking sheet. 4 Remove the primary charging roller releasing spacer.
CHAPTER 8 INSTALLATION Work Step Remarks 6 Fill out the label, and attach it to the drum unit cover. 7 Lock the developing assembly, and close the copier’s top unit. 8 Turn on the door switch using the door switch actuator; then, shift the power switch to ‘ON’. 9 Select service mode No. 313/314, and enter the settings recorded on the drum label. To select service mode, • Press the service mode switch (SW302) with a hex key.
CHAPTER 8 INSTALLATION Step Work 13 Execute ‘No. 412’ in service mode. • Press the service mode swicth (SW302), ‘4’ on the keypad, AE key, ‘1’ and ‘2’ on the keypad, and Start key in sequence. 14 Remove the door switch actuator, and close the front door. 8-16 COPYRIGHT © 1997 CANON INC. Remarks The copier automatically sets the APVC value; it stops in about 23 sec. CANON NP6218 REV.
CHAPTER 8 INSTALLATION V. INSTALLING THE CONTROL CARD IV N Caution: Be sure to disconnect the copier’s power plug before starting the installation work. 1) 2) 3) 4) 5) 6) 7) 8) Open the front cover Open the copier’s top body by operating its open/close lever. Detach the front cover. Take out the cartridge. Detach the inside cover. Loosen the screw on the upper rear cover. Loosen the two screws on the copyboard glass. Detach the face plate q from the control card cable inlet.
CHAPTER 8 INSTALLATION 10) Disconnect the copier’s dummy connector r. r Figure 8-503 11) Connect the connector t of the Control Card IV N. t Figure 8-504 12) Connect the copier’s power plug, and turn on its power switch to check the operation of the Control Card IV N. 8-18 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION VI. CASSETTE HEATER KIT 5 INSTALLATION PROCEDURE A. Unpacking Open the shipping box, and check to make sure that none of the parts shown in Fig. 8-601 is missing. Figure 8-601 q w e r Cassette Heater ...............................1 Mounting plate 1 ..............................1 Mounting plate 2 ..............................1 Relay harness ..................................1 COPYRIGHT © 1997 CANON INC. t Cord clamp ......................................
CHAPTER 8 INSTALLATION B. Installation (to a Cassette Feeding Module-A2/B2) 1) Remove the cassettes and all rear covers from the cassette feeding unit/pedestal. 2) Remove the copier’s rear cover. 3) Install the mounting plate 2 to the cassette heater with two screws (black; M4×6). Mounting plate 2 Screw Cassette heater Figure 8-602 8-20 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION 4) Insert the bend found at the rear of the heater into the heater mounting slit in the rear side plate of the cassette feeding unit/pedestal (bottom holder). Figure 8-603 5) Open the cover on the front of the cassette feeding unit/module, and fix the mounting plate 2 in place to the front side plate with two screws (white; M3×6). Screws Figure 8-604 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION 6) Close the cover. 7) Connect the connector on the relay harness to the connector of the cassette heater (rear side plate of the cassette feeding unit). (Connect the side where the harness is bundled with a tie-wrap.) Tie-wrap Connector Cord clamp Figure 8-605 8) Install the cord clamp to the hole in the rear side plate of the cassette feeding unit/pedestal. • Cassette Feeding Module-A2 Cord clamp Figure 8-606 8-22 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION • Cassette Feeding Module-B2 Cord clamp Figure 8-607 9) Lead the other connector on the relay harness through the copier’s bottom plate as shown. Copier's connector Molded member Copier's base plate Figure 8-608 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION 10) Connect the connector on the relay harness with the copier’s connector. Relay harness Figure 8-609 11) Fix the relay harness in place to the rear side plate with the cord clamp. • Cassette Feeding Module-A2 Figure 8-610 Caution: Make sure that the relay harness is outside the area indicated by dashed lines to prevent it from interfering with the feet of the cassette. 8-24 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION • Cassette Feeding Module-B2 Figure 8-611 Caution: Make sure that the relay harness is outside the area indicated by dashed lines to prevent it from interfering with the feet of the cassette. 12) Install the rear cover of the cassette pedestal and all covers. 13) Install the copier’s rear cover. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION VII. INSTALLING THE REMOTE DIAGNOSTIC DEVICE II A. Unpacking q w e r t y *Not used u *Not used Figure 8-701 q w e r RDD ..........................................1 unit Power Supply Unit.....................1 unit Screw (M4×6) ...........................4 pcs. Harness band...........................2 pcs. 8-26 COPYRIGHT © 1997 CANON INC. t Switch setting label ..................1 pcs. y Grounding wire*.........................1 pc. u Ferrite core ..........................
CHAPTER 8 INSTALLATION B. Installation to the Copier Caution: This model may not be available for sale in some areas. Caution: Keep the following in mind when installing the RDD to the copier: 1. 2. 3. 4. 5. This Accessory is to be installed by a qualified personal. Make sure the copier has been properly installed before starting the work. Keep the copier’s power cord disconnected during the work. Be sure to use the appropriate screws (length, diameter).
CHAPTER 8 INSTALLATION 3) Remove the two screws y, and detach the face cover t from the copier’s rear cover. y t y Fig. 8-704 4) Connect the cable o on the copier side and the RDD’s cable i. Note: If a conversion connector is found on the cable !1 from the copier, remove it. o Fig. 8-705 8-28 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION o i Fig. 8-706 5) Fix the RDD in place on the copier’s rear cover with four screws y; use the screws removed from the copier. Modular Jack on the Right y y Fig. 8-707 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION 6) Remove the slack from the cable between the copier and the RDD; keep the excess cable to the RDD using the harness band !0. !0 Fig. 8-708 1 2 3 4 5 6 7 8 7) Shift bit 4 of the DIP switch 2 !1 to ON so that the communication mode between the RDD and the copier is IPC mode. !1 LED1 LED2 LED3 2 6 1 1 BAT1 SW3 SW2 LED5 LED6 LED4 1 SW4 2 IC6 CN4 SW1 CN3 CN2 Fig.
1 2 3 4 5 6 7 8 CHAPTER 8 INSTALLATION !3 LED1 LED2 LED3 2 6 1 1 BAT1 1 SW3 SW2 LED5 LED6 LED4 SW4 2 IC6 CN4 !2 SW1 CN3 CN2 Fig. 8-710 1 2 3 4 5 6 9) Set the bits of the DIP switch 3 !4 on the RDD’s PCB as indicated in the table. !4 LED1 LED2 LED3 2 6 1 1 BAT1 SW3 SW2 LED5 LED6 LED4 1 SW4 2 IC6 CN4 SW1 CN3 CN2 Fig. 8-711 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 8 INSTALLATION Switch Setting SW3-1 AII SW3-2 OFF SW3-3 ON Description ON selects push pulse for RDD circuit confihuration OFF selscts dial pulse for RDD circuit confihuration ON sets dial pulse speed to 20 PPS OFF sets dial pulse speed to 10 PPS SW3-4 SW3-5 SW3-6 – reserved Table 8-701 10) Fit the Power Supply Unit into the power plug, and check that LED 1 !5 (green) on the RDD’s PCB comes on.
CHAPTER 8 INSTALLATION 11) Reset the RDD’s RAM. Set the bits on the DIP switch 2 !6 on the RDD’s PCB as indicated in the table, and press the push switch 4 !7 to make sure that LED5 !8 (red) comes on. bits on SW2 Setting SW2-1 OFF SW2-2 OFF SW2-3 ON SW2-4 ON SW2-5 OFF SW2-6 OFF SW2-7 See step 9). SW2-8 OFF 1 2 3 4 5 6 7 8 Table 8-702 !6 !8 LED1 LED2 LED3 2 6 1 1 BAT1 SW3 SW2 LED5 LED6 LED4 SW4 !7 IC6 1 2 CN4 SW1 CN3 CN2 Fig. 8-713 COPYRIGHT © 1997 CANON INC.
CHAPTER 8 INSTALLATION 12) After making sure that LED5 !8 (red) has come on, set the bits on the DIP switch 2 !6 on the RDD’s PCB as indicated in the table, and press the push switch 4 !7 to make sure that LED5 !8 (red) goes out, indicating that the RAM has been reset. bits on SW2 Setting SW2-1 OFF SW2-2 OFF SW2-3 OFF SW2-4 ON SW2-5 OFF SW2-6 ON SW2-7 See step 9).
CHAPTER 8 INSTALLATION 1 2 3 4 5 6 7 8 13) Shift bit 6 of the DIP switch 2 !9 on the RDD’s PCB to OFF. !9 LED1 LED2 LED3 2 6 1 1 BAT1 1 SW3 SW2 LED5 LED6 LED4 SW4 2 IC6 CN4 SW1 CN3 CN2 Fig. 8-715 14) Connect the RDD to the telephone line. If you are connecting the RDD on its own, connect the modular jack cable to the RDD’s connector @0 (LINE).
CHAPTER 8 INSTALLATION 15) Call up the service station, and request the RDD’s initial settings. (LED 4 @2 (red) starts to flash upon receipt.) LED1 LED2 LED3 2 6 BAT1 @2 1 SW2 LED5 LED6 LED4 1 1 SW3 SW4 2 IC6 CN4 SW1 CN3 CN2 Fig. 8-717 16) Call up the service station to check if the initial settings have been successfully made; if the attempt has failed, reset the RAM once again starting with step 11) through 13).
CHAPTER 8 INSTALLATION 18) Check that the communications between the RDD and the copier are executed normally. Connect the copier’s power plug, and switch it on to make sure that LED 2 @5 (orange) flashes. @5 LED1 LED2 LED3 2 6 BAT1 1 SW2 LED5 LED6 LED4 1 1 SW3 SW4 2 IC6 CN4 SW1 CN3 CN2 Fig. 8-719 19) Press the copier’ COPY START key to make sure that LED3 @6 (pink) flashes each time a copy is delivered.
CHAPTER 8 INSTALLATION 20) Attach the Switch setting label @7, to the RDD’s top cover q; then, record the setting of each switch on the label. w @7 q w Fig. 8-721 21) Fix the RDD’s top cover q in place using two screws w. (Make sure that the Power Unit’s cable is fixed in place on the cable guide inside the RDD and is not trapped by the top cover q. 8-38 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 9 MAINTENANCE AND SERVICING This chapter provides tables of periodically replaced parts and consumables/durables and scheduled servicing charts. I. II. PERIODICALLY REPLACED PARTS ................................................9-1 A. Periodically Replaced Parts...........9-1 DURABLES ........................................9-2 A. Copier ............................................9-2 COPYRIGHT © 1997 CANON INC. III. IV. V. B. Cassette Feeding Module-B2/ Cassette Feeding Module-A2 ........
CHAPTER 9 MAINTENANCE AND SERVICING I. PERIODICALLY REPLACED PARTS Some parts of the copier must be replaced on a periodical basis to ensure a specific level of performance; replace them as indicated regardless of the presence of visible damage. Plan the replacement to coincide with a scheduled visit. A. Periodically Replaced Parts as of JAN. 1997 No. Parts name Parts No.
CHAPTER 9 MAINTENANCE AND SERVICING II. DURABLES The parts shown in the table may require replacement because of deterioration or damage over the period of warranty; replace them when they fail using the table as a guide. A. Copier as of JAN 1997 No. Parts name Parts No. Q’ty Life (copies) Remarks 1 Pick-up roller FB3-5153-00P 2 100,000 See Note 1. 2 Pick-up separation pad FG5-2922-020 1 100,000 See Note 1. 3 Multifeeder pick-up roller FB1-8581-000 1 100,000 See Note 1.
CHAPTER 9 MAINTENANCE AND SERVICING B. Cassette Feeding Module-B2/Cassette Feeding Module-A2 as of JAN 1997 No. Parts name Parts No. Q’ty Life (copies) Remarks 1 Pick-up roller FB2-2251-000 1 100,000 Actual usage 2 Pick-up separation pad FG5-3614-000 1 100,000 Actual usage Note: The above values are estimates only and subject to change based on future data. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 9 MAINTENANCE AND SERVICING III. PERIODICAL SERVICING The copier does not have items that require periodical servicing; however, it is recommended that the following work items be performed during any visit to the user’s. Step Work Checks 1 Meet the person in charge of the copier. Check the general conditions. 2 Make test copies in Direct, Reduce, Enlarge, and page separation. Check the following: a. image density b. white background for soiling c. characters (clarity) d.
CHAPTER 9 MAINTENANCE AND SERVICING IV. SERVICING CHART Caution: Do not use solvents or oils other than those specified. : replace ✩ : lubricate : clean Unit Parts External Copyboard glass Pick-up assembly Pick-up roller Scanner drive assembly Scanner rail Feeding assembly Transfer guide assembly every 20,000 : adjust every 60,000 : inspector clean Remarks Use alcohol. ✩ Use alcohol solution; then, apply lubricant. Use a moist cloth.
CHAPTER 9 MAINTENANCE AND SERVICING Unit Fixing assembly Parts every 20,000 every 60,000 Remarks Lower fixing roller Use cleaning oil. Separation claw (lower) Use solvent. Fixing inlet guide Delivery assembly Delivery guide/ tray Delivery spacer V. NOTES ON DRUM KIT ! Caution: Do NOT throw the drum kits into fire; it can burst or explode. Otherwise, dispose of it as nonflammable material. 9-6 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING This chapter provides tables of maintenance/inspection, standards/adjustments, and identification (image fault/malfunction). I. II. III. IV. V. MAINTENANCE AND INSPECTION..10-3 A. Image Adjustment Basic Procedure ....................................10-3 B. Periodical Servicing.....................10-4 STANDARDS AND ADJUSTMENTS ...............................10-5 A. Image Adjustment .......................10-5 B. Exposure System ........................10-15 C.
Guide to Troubleshooting Tables The troubleshooting procedures in this manual are prepared in the form of tables, rather than flow charts. Study the following for an idea of how to consult the tables. EX. AC power is absent. Checks Remedies YES/NO Cause/Fault Step Power plug 1 Is the power plug connected to the outlet? NO Connect the plug. Covers 2 Are the front door and delivery cover closed properly? NO Close the door and cover.
CHAPTER 10 TROUBLESHOOTING COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAR.
I MAINTENANCE AND INSPECTION A. Image Adjustment Basic Procedure COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
B. Periodical Servicing 10-4 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING II. STANDARDS AND ADJUSTMENTS A. Image Adjustment 1. Adjusting the Image Leading Edge Margin ([3], No. 305; registration ON timing) Activate [3] in service mode, and select ‘No. 305’ (leading edge margin adjustment), and make adjustments so that the image position is as indicated in Figure 10-201 when the Test Sheet is copied in Direct. 2.5±1.5mm Figure 10-201 Making Adjustments 1) Activate [3] in service mode, and select ‘No. 305’ using the keypad.
CHAPTER 10 TROUBLESHOOTING 2. Adjusting the Leading Edge Non-Image Width ([3], No. 306; blank shutter ON timing) Activate [3] in service mode, select ‘No. 306’ (leading edge non-image width adjustment), and make adjustments so that the image leading edge non-image width is as indicated in Figure 10-202 when the Test Sheet is copied in Direct. The copier varies the image leading edge non-image width by varying the timing at which the blank shutter is closed.
CHAPTER 10 TROUBLESHOOTING 3. Adjusting the Image Trailing Edge Non-Image Width ([3], No. 309; blank shutter timing) Trailing Edge Non-Image Width 2.5± 1.5mm Figure 10-203 Activate [3] in service mode, and select ‘No. 309’ (leading edge non-image width adjustment); make adjustments so that the image trailing edge non-image width is as indicated in Figure 10-203 when the Test Sheet is copied in Direct.
CHAPTER 10 TROUBLESHOOTING 4. Adjusting the Left/Right Registration Make adjustments so that the position of the image is as indicated in Figure 10-205 when the Test Sheet is copied in Direct. a. Pick-Up from the Cassette Turn the screw 1 shown in Figure 10-204 to adjust the position of the cassette hook plate. standard: 0.±1.5 mm clockwise turn: paper moves in the direction of – shown in Figure 10-205. counterclockwise turn: paper moves in the direction of + in Figure 10-205.
CHAPTER 10 TROUBLESHOOTING 5. Adjusting the Left/Right Margin (No. 311; left/right margin) Select ‘No. 311’ (left/right margin adjustment); make adjustments so that the left/right margin is 2.5 ±1.5 mm when the Test Sheet is copied in Direct. You must adjust the left/right registration before making this adjustment. Making Adjustments a. Margin (adjusting the width) 1) Activate [3] in service mode, and select ‘No. 311’ using the keypad. 2) Press the Start key. 3) Enter a value using the keypad.
CHAPTER 10 TROUBLESHOOTING The entire shutters are shifted. Shutter Figure 10-209 Caution: After the adjustments (both a and b), turn on and off the power switch or change the reproduction ratio so that the blank exposure assembly performs home positioning. 6. Adjusting the Scanning Lamp Intensity Turn VR301 on the DC controller as follows whenever you have replaced the scanning lamp, intensity sensor, or DC controller. 1) Set Test Sheet NA3 on the copyboard, and close the copyboard cover.
CHAPTER 10 TROUBLESHOOTING 7. AE Adjustment Adjust the AE mechanism using the following three service modes: q AE Basic Adjustment No. 410 .............scanner forward stop No. 408 ........scanning lamp on check No. 208 .....AE sensor voltage display No. 301lamp intensity automatic adjustment at time of AE scan w Copy Density in AE Mode (No.
CHAPTER 10 TROUBLESHOOTING 8) Enter ‘208’ using the keypad, and press the start button. • The display indicates ‘208’. 9) Press the Start key. • The display indicates ‘0–255’. 10) Turn VR391 on the DC controller so that the reading on the display is ‘100~105’. VR391 Figure 10-210 DC Controller PCB 11) Turn off and on the power switch. • This turns off and on the scanning lamp. 12) Press the service mode switch. • The copier enters service mode, and the display indicates ‘1’.
CHAPTER 10 TROUBLESHOOTING b. 1) 2) 3) 4) 5) 6) Copy Density (development bias) Reference Point Adjustment for AE Mode (No. 302) If the indication is not in the 300’s, activate adjustment mode (service mode) as in the case of ‘No. 301’. Press [2] on the keypad. • The copier indicates ‘302’. Press the Start key. • The copier indicates the current setting. Change the setting using the keypad, and press the AE key. • A higher setting causes the AE copies to be darker.
CHAPTER 10 TROUBLESHOOTING Item No. 301 Function Automatic lamp intensity adjustment for AE scans Remarks\ Description The lamp intensity is automatically adjusted so that the copies of the Test Chart will be made at density 5. Lighter 9 Copy density 5 Darker Test Chart No. 302 Density of original q A lower setting in service mode causes the AE copies to be darker. w A higher settings in service mode causes the AE copies to be lighter.
CHAPTER 10 TROUBLESHOOTING B. Exposure System 1. Routing the Scanner Drive Cable Route the cable as shown by q through !0; then, adjust the cable tension and mirror position as described. !0 Set screws Loosen the set screws to enable free rotation. w e Screw Loosen the screw,and shift it down. Put the steel ball into the hole in the pulley; wind the cable nine times toward the inside, and four times toward the outside; then, snap on the pulley clip. Attach the mirror positioning tool.
CHAPTER 10 TROUBLESHOOTING 2. Adjusting the Mirror Position (optical distance between No. 1 mirror and No. 2/No. 3 mirror) 1) Keep the mirror positioning tool handy. (See “4 Assembling the Mirror Positioning Tool on P. 10-17.”) 2) Move the No. 1 mirror mount forward, and match the long hole in the front side plate and the cable fixing screw q. q (front) (rear) Figure 10-213 3) Loosen the set screw on the pulley. 4) Set the mirror positioning tool w to the No. 1 mirror mount and the No.
CHAPTER 10 TROUBLESHOOTING 6) Tighten the screw on the pulley. 7) Detach the positioning tool (FY9-3009). 3. Adjusting the Scanner Cable Tension Move the tension plate and tighten the screw w so that the distance across the ends of the cable spring q is 34 ±1 mm as indicated in Figure 10-216. q w 34±1mm Figure 10-216 4. Assembling the Mirror Positioning Tool 1) Remove the screw found in position B.
CHAPTER 10 TROUBLESHOOTING 4) Tighten the screw. B B A A Position A Figure 10-218 5. Points to Note When Attaching the Fluorescent Lamp Heater/Scanning Lamp • Attach the heater to the lamp as follows: Lightemitting portion 60m m 1~ 5m m Fluorescent heater 60m m Figure 10-219 Caution: Do not touch the fluorescent lamp. (Use lint-free paper.) Do not block the light-emitting portion by the fluorescent lamp heater. 10-18 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING Attach the scanning lamp so that its light-emitting portion (open side) is to the left when viewed from the front of the copier as shown in Figure 10-220. Light-emitting portion Figure 10-220 (front view) Caution: Do not touch the fluorescent lamp. (Use rint-free paper) Be sure to adjust the gain and AE whenever you have replaced the fluorescent lamp. (See P. 10-11.
CHAPTER 10 TROUBLESHOOTING 6. Positioning the Change Solenoid Make adjustments by loosening the two screws t so that the gear r butts against the direction of b by the arm e when the steel core q of the solenoid is fully pushed in the direction of B, i.e., when the E-ring comes into contact with the solenoid. e a q t A B b r w Figure 10-222 10-20 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING C. Image Formation System 1. Positioning the Blank Shutter Solenoid Adjust the position of the blank shutter solenoid so that the bottom A is 9.5 ±0.5 mm on both sides when the solenoid is moved in the direction of ON; try not to force down the shutter. After adjustments, make sure that the solenoid moves smoothly. A Figure 10-223a Figure 10-223b COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING 2. Routing the Blank Shutter Cable Attach the spring to the outside of the sides shutter. Slide shutter (rear) Wind 3.5 times. Slide shutter (front) Figure 10-224 3. Positioning the Solenoid for the Primary Charging Roller Loosen the two screws used to fix the solenoid e in place, and move the solenoid in the direction of B so that theR in Figure 10-225 is 5.5 ±0.2 mm when the joint q is butted against a of the solenoid support plate w.
CHAPTER 10 TROUBLESHOOTING 4. After Replacing the Drum Unit Whenever you have replaced the drum unit, enter the date of replacement and the current counter reading on the label (Figure 10-226) that came with the drum unit; attach the label to the front cover of the new drum unit, and perform the image basic adjustment procedure. Figure 10-226 5. 1) 2) 3) Attaching the Drum Heater Detach the front cover. Open the copier’s top body by operating the copier open/close lever.
CHAPTER 10 TROUBLESHOOTING 7) Fix the harness in place using two SK binders (WT2-5145; front, rear) t; then, insert it into the transfer guide. Caution: When fixing the harness in place, make sure that the cap portions of the terminals alternate; keeping them in parallel will bring them in contact with the transfer roller. 8) Fix the harness with two SK binder t (front, rear) in place, and insert it into the transfer guide. Figure 10-229 9) Connect the connector y as shown in Figure 10-230.
CHAPTER 10 TROUBLESHOOTING D. Pick-Up/Feeding System 1. Orientation of the Pick-Up Roller Attach the pick-up roll q so that the side w shown in Figure 10-231 is toward the rear. w q Figure 10-231 2. Orientation of the Multifeeder Pick-Up Roller Attach the multifeeder pick-up roller q so that the side with the collar with a cross w is toward the rear. w q (front) Figure 10-232 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING 3. Positioning the Paper Guide Plate Cam (multifeeder) Temporarily fix the screw with a hex nut of the spring clutch assembly in place; turn the control ring. Make adjustments so that the hole in the cam and the hole in the multifeeder drive unit match as indicated in Figure 10-233 when the claw of the control ring is engaged with the solenoid; then, fix in place. Figure 10-233 10-26 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING E. Fixing System 1. Points to Note When Attaching the Fixing Film Orient it so that the cut-off is toward the rear. Make sure that the end toward the front is along the middle groove. Film end aligned. Figure 10-234 2. Points to Note When Attaching the Heater Connector • When attaching the heater connector to the fixing heater, take care not to damage the heater.
CHAPTER 10 TROUBLESHOOTING 3. Adjusting the Fixing Film Drive Roller Pressure If a fixing fault occurs, be sure to go through the following to adjust the pressure of the drive roller. 1) Detach the fixing cover. 2) Detach the inside cover of the copier’s front side. 3) Close the copier’s upper body, and insert the door switch actuator. 4) Press the service mode switch (SW302). • The copier enters service mode, and the display indicates ‘1’. 5) Press ‘4’ on the keypad. • The display indicates ‘4’.
CHAPTER 10 TROUBLESHOOTING If the copy countis ‘180’ or higher and ‘348’ or lower and has not changed, go to step 17). Or, if 10’s and 100’s do not change, go to step 17); 14) Loosen the fixing screw w slightly; i.e., move it to the left about 1 mm. 15) Turn the adjusting screw e so that the copy count is ‘180’ or higher’ and ‘348’ or lower. Caution: Adjust so that 10’s and 100’s will not change; ignore 1’s may change ±5.) • • A clockwise turn decreases the reading.
CHAPTER 10 TROUBLESHOOTING 5. Adjusting the Nip The nip should be as indicated in Figure 10-238. You must make the following adjustments if fixing faults occur. c A4 paper Feeding direction b Center of copy paper a b : 4 -1mm +2mm a-c : 1mm or less Figure 10-238 Note: a and c represent points 10 cm from both edges of the copy. a. 1) 2) 3) 4) 5) 6) 7) Measuring the Nip Measure the nip before starting the day’s work; for example, first thing in the morning.
CHAPTER 10 TROUBLESHOOTING 6. Routing the Drive Belt Route the drive belt around the pulley and tensioner as shown in Figure 10-239. Figure 10-239 7. Storing the Fixing Heater Resistance You must store the resistance of the fixing heater as follows whenever you are replacing the fixing upper unit; do not change the setting unless you have replaced the heater. 1) Take notes of the resistance (ohm) of the fixing heater recorded on the rear side plate of the fixing upper unit.
CHAPTER 10 TROUBLESHOOTING Reference: 1. If the measured resistance is 9.5 ohms, enter ‘095’; if 28 ohms, enter ‘280’. 2. The power supplied to the fixing heater is phase-controlled based on the voltage of the power supply and the resistance being stored. 8.
CHAPTER 10 TROUBLESHOOTING 2) Replace the fixing upper unit. 3) Press the service switch (SW302). • The copier enters service mode and indicates ‘1’. 4) Enter ‘5’ using the keypad. • The display indicates ‘5’. 5) Press the AE key, and enter ‘8’ on the keypad. • The display indicates ‘508’. 6) Press the Start key. • The display indicates ‘001’, ‘002’, or ‘003’. 7) Enter the control value you have recorded in step 1) using the keypad.
CHAPTER 10 TROUBLESHOOTING 10) Enter ‘4’ using the keypad, and set the copy count. 11) Press the service switch (SW302), thereby recalling the temperature of the No. 1 thermistor. • The display indicates ‘1’. 12) Press the AE key, and enter ‘9’ on the keypad. • The display indicates ‘109’. 13) Press the Start key. • Make 4 copies in A3. 14) When copying is finished, take note of the temperature reading in the display. Press the Start key once again when the reading is 116°–118°C. • Make four copies in A3.
CHAPTER 10 TROUBLESHOOTING F. Electrical 1. After Replacing the PCB You must make the adjustments that follow whenever you have replaced the following PCBs. a. DC Controller PCB 1) Enter the value recorded on the service mode label attached behind the front door in service mode (‘3’; see p. 10-102). 2) Adjust the multifeeder paper width sensor; see p. 10-43. 3) Adjust the intensity of the scanning lamp; see p. 10-10. 4) Adjust AE; see p. 10-11.
CHAPTER 10 TROUBLESHOOTING 7) Press the AE key. • The indication changes to ‘EE’. 8) Press the Start key. • The indication returns to ‘450’. 9) Turn off and on the power switch. • The copier clears the backup RAM, and returns the default settings. Reference: To cancel RAM clearing, press the Clear key and then the Reset key. To cancel it after having finished step 8), press the Start key once again; when ‘noP’ is indicated, press the Start key once again. 3.
CHAPTER 10 TROUBLESHOOTING a. Copier + probe Name Checks Service mode PS1 J311-2 Scanner home position sensor (SCHP) — PS2 J307-2 Lens home reposition sensor (LHP) No. 205 1-c PS3 J315-2 Blank shutter home position sensor (BSHP) No. 205 1-d PS4 J313-9 Cassette paper sensor (CPD*) No. 205 1-c PS5 J313-3 Multifeeder paper sensor (MFPD*) No. 204 1-d PS6 J314-2 Registration sensor (RPD) No. 205 1-a PS7 J314-6 Separation sensor (SPD*) No. 204 1-b COPYRIGHT © 1997 CANON INC.
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Service mode PS8 J312-2 Delivery sensor (DSPD*) No. 204 1-g PS9 J304-12 Fixing film sensor (FFD) No. 205 1-e PS10 J306-15 Right door open/closed sensor (RDOP*) No. 204 1-a Q651 J314-8 Cassette size sensor 1 (CSZ-1) No. 203 1-e Q652 J314-9 Cassette size sensor 2 (CSZ-2) No. 203 1-f Q653 J314-10 Cassette size sensor 3 (CSZ-3) No.
CHAPTER 10 TROUBLESHOOTING + probe Name Display indication Voltage reading on meter The lever is moved. 0 — The lever is not moved. 1 — Display indication Voltage reading on meter Checks Service mode Q654 J314-11 Cassette size sensor 4 (CSZ-4) No. 203 2-a b. Slide out the cassette while in standby, and move the detection lever with a finger. Cassette Feeding Unit + probe Name Checks Service mode PS1cu J319-A2 Cassette 2 vertical path sensor (C2VPD) No.
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Service mode Q652-2 J319-B2 Cassette 2 size sensor 2 (C2SZ2) No. 201 1-f Q653-2 J319-B3 Cassette 2 size sensor 3 (C2SZ3) No. 201 1-g Q654-2 J319-B4 Cassette 2 size sensor 4 (C2SZ4) No. 201 2-a PS3cu J319-A7 Cassette 3 vertical path sensor (C3VPD) No. 203 1-b 10-40 Display indication Voltage reading on meter Draw out the cassette while in standby, and move the detecting lever by a finger; be sure to set paper selection to cassette 2.
CHAPTER 10 TROUBLESHOOTING + probe Name Checks Service mode PS4cu J319-A9 Cassette 3 paper sensor (C3PD*) No. 203 1-f Q651-3 J319-B1 Cassette 3 size sensor 1 (C3SZ1) No. 202 1-e Q652-3 J319-B2 Cassette 3 size sensor 2 (C3SZ2) No. 202 1-f Q653-3 J319-B3 Cassette 3 size sensor 3 (C3SZ3) No. 202 1-g COPYRIGHT © 1997 CANON INC. Display indication Voltage reading on meter Draw out the cassette 3 while in standby. The cassette is drawn out. 0 — The cassette is inserted with paper in it.
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Service mode Q654-4 J319-B4 Cassette 3 size sensor 4 (C3SZ4) No. 202 2-a PS5cu J319-A6 Cassette right door open/closed sensor (CRDOP*) No. 204 2-a 10-42 Display indication Voltage reading on meter Draw out the cassette while in standby, and move the detecting lever by a finger; be sure to set paper selection to cassette 3. The lever is moved. 0 — When the lever is not moved. 1 — Open the right door while in standby. The lever is moved.
CHAPTER 10 TROUBLESHOOTING 4. Adjusting the Multifeeder Paper Width Sensor Store the characteristic of the multifeeder paper width sensor in service mode (501). Perform the adjustment when you have replaced the sensor if the sensor fails to identify the paper size correctly. 1) Open the front door, and insert the door switch actuator into the door switch. 2) Press the service mode switch (SW302) with a hex key. • The copier activates service mode, and indicates ‘1’. 3) Press [5] on the keypad.
CHAPTER 10 TROUBLESHOOTING 5. Setting the Paper Size for the Universal Cassette If the paper size lever for the cassette is at the universal cassette, set the appropriate paper size in service mode (505). 1) Open the front door, and insert the door switch actuator into the door switch. 2) Press the service mode switch (SW302) with a hex key. • The copier activates service mode, and indicates ‘1’. 3) Press [5] on the keypad. • The copier indicates ‘5’. 4) Press the AE key.
CHAPTER 10 TROUBLESHOOTING III. TROUBLESHOOTING IMAGE FAULTS A. Initial Checks 1. Site Environment a. Make sure that the power supply is as specified (±10%). b. Avoid high temperature/humidity conditions; near water faucets, water boilers, and humidifiers. Avoid areas subject to excessively low temperature, sources of fire, and dust. c. Avoid areas subject to ammonium gas. d. Avoid areas subject to direct rays of the sun; otherwise, instruct the user to provide curtains. e.
CHAPTER 10 TROUBLESHOOTING 5. Others Moving a machine which has been cooled in a storage room or the like in winter to a warm room can lead to condensation inside the machine, causing various problems; for instance, a. condensation on the scanning system (glass, mirror, lens) leads to light images. b. condensation in the charging system leads to electrical leakage. c. condensation on the pick-up/feeding guide leads to feeding problems.
CHAPTER 10 TROUBLESHOOTING COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING B. SAMPLES OF IMAGE FAULTS not available 10-48 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING C. Troubleshooting Faulty Images 1. The copy is too light (half-tone only). Cause Step Checks Action Results 1 Perform the Basic Image Adjustment Procedure. Is the problem corrected? YES End. AE mechanism 2 Make copies in AE mode. Is the density too low, i.e., is the copy too light? YES Perform AE adjustment. Developing assembly 3 Is the developing cylinder coated with a uniform layer of toner? NO Replace the developing assembly.
CHAPTER 10 TROUBLESHOOTING 2. The copy is too light (black solid also). 3. The copy is too light (overall, extremely). Cause Step Checks Results Action 1 Perform the Image Basic Adjustment Procedure. Is the problem corrected? YES End. 2 Turn off the power switch during copying operation, and open the front door. Is the toner image on the photosensitive drum before transfer more or less normal? NO Go to step 7.
CHAPTER 10 TROUBLESHOOTING Transfer Cause Toner level, toner level detection mechanism Composite power supply PCB Step Checks Results Action 9 Take out the developing assembly, and shake it. Is the problem corrected? YES The level of toner may be too low or the toner level detection mechanism may be faulty; advise the user to replace the toner cartridge. 10 Is the reading in service mode (105; primary current) 10 µA or less? YES Replace the composite power supply PCB.
CHAPTER 10 TROUBLESHOOTING 4. The copy has uneven density (front too dark). 5. The copy has uneven density (front too light). Cause Step Checks Action Results Scanner 1 Clean the scanning lamp, reflecting plate, side reflecting plate, mirror, lens, and dust-proofing glass. Is the problem corrected? YES End. Primary charging roller 2 Execute ‘No. 402’ in service mode (primary charging roller cleaning). Is the problem corrected? YES End. Transfer charging assembly 3 Execute ‘No.
CHAPTER 10 TROUBLESHOOTING 6. The copy is foggy (overall). Cause Step Checks Results Action 1 Perform the Basic Image Adjustment Procedure. Is the problem corrected? YES End. Scanner 2 Clean the scanning lamp, reflecting plate, side reflecting plate, mirror, lens, and dust-proofing glass. Is the problem corrected? YES End. Pre-exposure lamp, DC controller PCB 3 Does the pre-exposure lamp turn on during copying operation? NO See “The pre-exposure lamp fails to turn on.
CHAPTER 10 TROUBLESHOOTING 7. The copy is foggy (vertical). 8. The copy has black lines (vertical; thick fuzzy lines). Cause Step Checks Results Action 1 Perform the Image Adjustment Basic Procedure. Is the problem corrected? YES End. Primary charging roller 2 Execute ‘No. 402’ in service mode (primary charging roller cleaning). Is the problem corrected? YES End. Scanner 3 Clean the scanning lamp, reflecting plate, side reflecting plate, lens, mirror, and dust-proofing glass.
CHAPTER 10 TROUBLESHOOTING 10. The copy has white spot (vertical). 11. The copy has white lines (vertical). Step Checks Results Action Fixing assembly 1 Make a copy with the copyboard cover lifted, and turn off the power switch while the paper is moving through the feeding assembly. Are white spots or liens noted on the copy before it moves through the fixing assembly? NO 1. Clean the inlet guide (upper, lower) of the fixing assembly. 2. Check the upper fixing unit.
CHAPTER 10 TROUBLESHOOTING 12. The copy has white spots (horizontal). Step Checks Results Action Toner level 1 Take out the developing assembly, and shake it several times. Is the problem corrected? YES The toner level may not be adequate; advise the user. Photosensitive drum 2 Is the problem noted at intervals of about 9.4 cm (scratches in the photosensitive drum)? YES 1. Clean the drum. 2. If scratches are found on the drum, replace the drum cartridge.
CHAPTER 10 TROUBLESHOOTING 13. The back of the copy is soiled. Cause Transfer charging roller Durm cartridge Step Checks Action 1 Turn off the power switch while paper is moving through the feeding assembly. Is the back of the copy soiled? NO Go to step 7. 2 Execute ‘No. 403’ in service mode (transfer roller cleaning). Is the problem corrected? YES End. 3 Make several solid white copies. Is the problem corrected? YES End.
CHAPTER 10 TROUBLESHOOTING 14. The copy has a fixing fault. Cause Step Checks Results Action Fixing film 1 Is the problem noted vertically? YES Check the fixing film for scratches. Lower fixing roller pressure 2 Is the nip of the fixing assembly within specification? (Use ‘No. 402’ of service mode.) NO Replace the lower fixing roller pressure spring. YES Try recommended paper; if the results are good, advise the user to use recommended paper.
CHAPTER 10 TROUBLESHOOTING 18. The copy has a blurred image. Cause Step Checks Results Action Scanner drive cable 1 Does the cable overlap on the cable pulley while the scanner is moving? Is the cable too loose or too tight? YES 1. Re-route the cable. 2. If the cable is twisted or frayed, replace it. Scanner rail 2 Is the scanner rail soiled? Is foreign matter found on the scanner rail? YES Clean the surface of the scanner rail.
CHAPTER 10 TROUBLESHOOTING 19. The copy is foggy (horizontal). Cause Step Checks Results Action 1 Is the problem noted at the same position on all copies made in Direct? YES Go to step 5. Scanning lamp 2 Does the scanning lamp flicker when the scanner is moving forward? YES Check the scanning lamp. Developing assembly spacer 3 Check the developing assembly spacer for toner adhesion or deformation.
CHAPTER 10 TROUBLESHOOTING 20. The copy has poor sharpness. Cause Step Checks Results Action Original 1 Is the original off the glass surface? YES 1. Check the copyboard cover for warping. 2. Advise the user how to place an original. Copyboard glass 2 Is copyboard glass stained with oil? Is the copyboard glass attached correctly? YES • Clean the copyboard glass. • Re-attach the copyboard glass. Lens drive assembly 3 Turn off and on the power switch.
CHAPTER 10 TROUBLESHOOTING 21. The copy is blank. Cause Step Drum cartridge 1 Is the drum cartridge securely inserted? NO Insert the drum cartridge. Drum drive assembly 2 Is the drum cartridge rotating during copying operation? NO 1. Check if the photosensitive drum rotates smoothly. 2. Check the drum drive assembly. Transfer charging assembly 3 Is the transfer charging roller securely inserted? NO Re-insert the transfer roller.
CHAPTER 10 TROUBLESHOOTING IV. TROUBLESHOOTING MALFUNCTIONS A. Troubleshooting Malfunctions 1. E000 Action Step Checks Results J47 (relay connector to thermistor) 1 Disconnect the connector (J4) of the fixing heater, and press the power switch while holding down the service mode switch. (This clears E000; about 2 sec later, the power switch turns off automatically. Is the connection of J47 (4-pin connector near the rear side plate fixing assembly) connected properly? NO Re-connect it.
CHAPTER 10 TROUBLESHOOTING 2. E001 Step Checks Results Action Thermistor 1 Disconnect the connector (J4) of the fixing heater, and press the power switch while holding down the service mode switch. (This clears E001; about 2 sec later, the power switch turns off automatically.) Let the fixing assembly cool sufficiently; then, disconnect J4. Is the resistance between J47-1 and -2 about 0 and the resistance between J47-3 and-4 about 0 ? YES Replace the fixing upper unit.
CHAPTER 10 TROUBLESHOOTING 4. E004 Cause Fixing heater driver PCB Step 1 Checks Replace the fixing heater driver PCB. Is the problem corrected? DC controller PCB Results Action YES End. NO Replace the DC controller PCB. 5.
CHAPTER 10 TROUBLESHOOTING 6. E010 Cause Main motor unit (M1; refers to main motor and main motor driver PCB as single entity) Step Action Results Checks 1 Does the main motor rotate until E010 is turned on? NO Go to step 3. 2 Set the meter to the 12VDC range. Does the voltage between J303-3 (+; MMD) and J303-2 (-; 0 V) on the DC controller PCB change from about 0 V to about 2.6 V or from about 5 V to about 2.
CHAPTER 10 TROUBLESHOOTING 8. E064 Cause Step Checks Results Action Wire 1 Turn off and on the power switch, and set ‘1’ as the copy count. Is E064 indicated after copying operation? YES Check the harness between the DC controller PCB and the composite power supply PCB. Composite power supply PCB 2 Set ‘1’ as the copy count, and press the Copy Start key once again. Is E064 indicated after copying operation? YES Go through steps 3 through 6; then, replace the composite power supply PCB.
CHAPTER 10 TROUBLESHOOTING 10. E210 Cause Step Action Results Checks 1 Turn on the power switch. Does the lens move? NO See “The lens fails to move.” Lens home position sensor (PS2) 2 Is the lens home position sensor (PS2) normal? (See the instructions on how to check photointerrupters.) NO Check the wiring between the connector (J307) on the DC controller PCB and the lens home position sensor (PS2); if normal, replace PS2. DC controller PCB 3 Replace the DC controller PCB.
CHAPTER 10 TROUBLESHOOTING 13. E261 Step Checks Results Power supply frequency 1 Turn off and on the power supply. Is the problem corrected? YES End. • If the problem occurs frequently, advise the user to obtain a frequency stabilizer. Composite power supply PCB 2 Replace the composite power supply PCB. Is the problem corrected? YES End. NO Replace the DC controller PCB. Cause DC controller PCB Action 14. E710, E711, E712, E717 Cause Step 1 Checks Turn off and on the power switch.
CHAPTER 10 TROUBLESHOOTING 16. AC power supply is absent. Step Checks Results Action E code (E000, E001, E002, E003 E004) 1 Does an E code turn on when the power switch is turned on, and the power switch turn off within about 2 sec? YES Disconnect the connector (J4) of the fixing heater, and turn on the power switch while holing down the service mode switch to clear the E code; then, check the error in ‘No. 108’ of service mode for a reference to the appropriate description.
CHAPTER 10 TROUBLESHOOTING Step Checks Results Connector (J211, J302, J309) 10 Is electrical continuity present between J211-1 on the composite power supply PCB and J309-1 on the DC controller PCB? NO Check the connector (J302) on the DC controller PCB; if normal, replace the DC controller PCB. Control panel 11 Replace the control panel. YES End. NO Replace the DC controller PCB. Cause DC controller PCB Action 17. DC power supply is absent.
CHAPTER 10 TROUBLESHOOTING 18. The blank shutter fails to move. Cause Step Results Checks Action Lens motor 1 Does the lens move? NO See “The lens fails to move.” Blank shutter drive assembly 2 Is the drive of the lens motor transmitted to the gear of the blank drive assembly? NO Make corrections so that the drive is transmitted. Blank shutter cable 3 Is the blank shutter cable routed correctly? NO Re-route the cable. 19. The photosensitive drum fails to rotate.
CHAPTER 10 TROUBLESHOOTING 20. The pick-up operation fails (from cassette). Cause Step Checks Results Action Paper (inside cassette) 1 Is the paper inside the cassette under the claws? NO Advise the user on the correct method of setting paper. Cassette 2 Slide out and then in the cassette. Is the problem corrected? YES End. • Advise the user on the correct way to set the cassette.
CHAPTER 10 TROUBLESHOOTING 22. The scanner fails to move forward/in reverse. Action Step Checks Results Cable 1 Is the cable for the scanner routed correctly? NO Re-route the cable. Scanner path 2 Is the scanner rail free of dirt, and does the scanner move smoothly when pushed by hand? NO Check the scanner rail for dirt and foreign matter; in addition check for objects that may come into contact with the scanner. Composite power supply PCB 3 Set the meter to the 50V DC range.
CHAPTER 10 TROUBLESHOOTING 24. The scanning lamp fails to turn on. Results Cause Step Scanning lamp 1 Turn off the power switch, and disconnect the power plug. Is the lamp attached correctly? NO Re-attach the lamp. Scanning lamp 2 Are the ends of the scanning lamp black? YES Replace the scanning lamp. DC controller PCB 3 Replace the DC controller PCB. Is the problem corrected? YES Replace the DC controller PCB.
CHAPTER 10 TROUBLESHOOTING 26. The fixing heater fails to operate. Cause DC controller PCB Step Results Checks Action 1 Is E000 indicated? YES See the descriptions under “E000.” 2 Replace the DC control PCB. Is the problem corrected? YES End. NO Replace the fixing heater drive PCB. Action Fixing heater driver 27. The pre-exposure lamp fails to turn on. Step Checks Results DC controller PCB 1 Detach the drum cartridge, and execute ‘No. 407’ in service mode.
CHAPTER 10 TROUBLESHOOTING 29 The jam message fails to turn off. Cause Step Checks Results Action Paper 1 Identify which sensor has detected the jam in ‘No. 107’ of service mode (jam history). Is paper found near the sensor? YES Remove the paper. Sensor 2 Is the sensor identified in step 1 normal? (See p. 10-36.) NO Check the lever and the wiring; if normal, replace the sensor. YES Replace the DC controller PCB. DC controller PCB COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING V. TROUBLESHOOTING FEEDING PROBLEMS A. Jams (copy paper) Jams tend to occur in the following locations of the copier: q pick-up assembly w separation/feeding assembly e fixing/delivery assembly The descriptions that follow, therefore, are organized according to each of the above locations. When a jam occurs, try to find out the location and the type of the jam in service mode ([1]; No. 101). e q w Figure 10-501 10-78 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING 1. Pick-Up Assembly Step Checks Results 1 Did the jam occur when the paper was picked up from the cassette? NO Go to step 8. 2 Is the cassette set in the copier correctly? NO Set the cassette correctly. 3 Try a different cassette. Is the problem corrected? YES Check the inside of the cassette for foreign matter. 4 Is the copy paper curled or wavy? YES Replace the copy paper; advise the user for the correct method of storing paper.
CHAPTER 10 TROUBLESHOOTING 2. Separation/Feeding Assembly Cause Step Checks Transfer charging assembly 1 Is the transfer charging assembly set correctly? NO Check the transfer charging assembly. 2 Are there burrs on the paper guide of the transfer charging assembly? YES Remove the burrs. Copy paper 3 Try Canon-recommended paper. Is the problem corrected? YES Advise the user to use recommended paper. Feed belt 4 Are the two feeding belts rotating properly? NO Check the belt pulley.
CHAPTER 10 TROUBLESHOOTING B. Feeding Faults 1. Double feeding Cause Step Checks Results Separation pad 1 Is the separation pad deformed or worn? YES Replace the separation pad. NO Push up the separation pad, and try replacing the spring. Spring Action 2. Wrinkling Cause Step Checks Results Action 1 Turn off the power while copy paper is moving through the feeding assembly.
CHAPTER 10 TROUBLESHOOTING VI ARRANGEMENT/FUNCTIONS OF THE ELECTRICAL PARTS A. Sensors Figure 10-601 10-82 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING Name Ref.
CHAPTER 10 TROUBLESHOOTING B. Clutches, Solenoids, and Switches Figure 10-602 10-84 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING Symbol Name Clutch CL1 CL2 CL3 registration clutch pick-up clutch multifeeder pick-up clutch Solenoid SL1 SL2 SL3 SL4 SL5 change solenoid multifeeder holding plate solenoid blank shutter primary charging roller cleaning solenoid transfer changing roller releasing solenoid Push switch DS1 door switch Switch SW1 SW2 anti-condensation switch fluorescent lamp heater switch Varistor ZD1 ZD2 transfer guide varistor attraction plate varistor Counter CNT1 CNT2 total cop
CHAPTER 10 TROUBLESHOOTING C. Motors, Heaters, and Lamps Figure 10-603 10-86 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING Symbol M Name Ref. Description Motor M1 M2 M3 M4 main motor scanning motor lens motor fixing belt motor Fan motor FM1 heat exhaust fan Heater H1 H2 R1 fixing heater fluorescent lamp heater lens heater Fluorescent lamp FL1 scanning lamp Lamp LA1 pre-exposure lamp Table 10-603 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING D. PCBs Figure 10-604 10-88 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING Ref.
CHAPTER 10 TROUBLESHOOTING E. Cassette Feeding Module – A2 CL1cu PS1cu 1 PS3cu M1cu PS2cu CL2cu PS5cu PS4cu Q564-2 Q563-2 Q562-2 Q561-2 Q564-3 Q563-3 Q562-3 Q561-3 Hcu Figure 10-605 10-90 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING Ref.
CHAPTER 10 TROUBLESHOOTING F. Variable Resistors (VR) and Check Pins by PCB Of all the VRs and check pins found in the copier, those that are needed in the field are discussed. Caution: Do not touch the VRs and check pins that are not discussed herein; they are for factory adjustment only and require special tools and instruments and must be adjusted with high precision. 1.
CHAPTER 10 TROUBLESHOOTING 2. Composite power supply PCB J212 1 J213 3 1 J210 2 1 J206 6 1 J205 2 1 5 2 J209 1 15 J211 1 LED501 3 J908 1 2 J906 1 J202 1 J204 2 1 3 Figure 10-607 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING VII. SERVICE MODE A. Outline The copier’s service mode may be classified into the following six: Item [1] [2] [3] [4] [5] [6] Description control display mode I/O display mode adjustment mode operation/inspection mode specification mode counter mode Table 10-701 B. Using Service Mode 1. Activating Service Mode 1) Open the front door, and insert the door switch actuator. • If you want to make checks for I/O display mode or the like while making copies, set the copy mode.
CHAPTER 10 TROUBLESHOOTING 2. Selecting a Service Mode 1) While the copy count indicator is indicating [1], press a key from [1] through [6] to select the appropriate mode. 2) Press the AE key. • The copier activates the selected mode, and the copy count indicator indicates ‘301’ or the like; ‘301’ represents the first mode of those represented by [3]. 3. Selecting Items 1) While the 100th digit on the copy count indicator is flashing (‘301’ or the like), press the keypad to select the mode to execute.
CHAPTER 10 TROUBLESHOOTING 7. Recording on the Service Mode Label Figure 10-702 shows the label attached behind the front door. At the factory, each machine is adjusted, and the settings used at the time are recorded on the label. You must record new settings if you changed them in the field. If you replaced the DC controller, be sure to store the settings recorded on the label in service mode.
CHAPTER 10 TROUBLESHOOTING C. Control Display Mode [1] • • • To select an item, press the appropriate key on the keypad and then the Start key. To clear an item, press the Clear key. A press on the Start key while a service mode is indicated executes the respective operation. Remarks Description No. 101 Jam location The display indicates the location of the jam on the copy count indicator; see below.
CHAPTER 10 TROUBLESHOOTING No. 101 Jam Location Indicator In this mode, the copy count indicator turn on to indicate the type of jam. If both delay and stationary are indicated for the same sensor, i.e., at time of power-on or standby, the copier has detected copy paper when it was not making copies.
CHAPTER 10 TROUBLESHOOTING D. I/O Mode [2] • • • Press [2] on the keypad and the AE key to activate I/O display mode. To clear an item, press the Clear key. A press on the Start key while a service mode is indicated executes the respective operation. Remarks Description No. 201 Port C digit 4 When the mode is activated, the copy count indicator turns on to indicate the I/O of the input port; see below.
CHAPTER 10 TROUBLESHOOTING LED (copy count indicator; from 201 to 205) 2-a 1-a 2-f 1-f 2-b 2-g 1-b 1-g 2-e 1-e 2-c 1-c 1-d 2-d No. 201/202/203/204 Port C Digital Display No.
CHAPTER 10 TROUBLESHOOTING No.
CHAPTER 10 TROUBLESHOOTING E. Adjustment Mode [3] • • • • • • No. To activate adjustment mode, press [3] on the keypad and then the AE key. To select an item, press the appropriate key on the keypad and then the Start key. To change the setting, press the appropriate keys on the keypad and then the AE key. To cancel an item, press the Clear key. A press on the Start key executes the respective operation.
CHAPTER 10 TROUBLESHOOTING No. Description 311 Left/right margin adjustment (Direct; home position for slide shutter for blank exposure) 312 Settings Remarks 0 ~ 15 A higher setting increases the margin on both left and right. default: 8 unit: 0.27 mm Left/right margin adjustment (Reduce; travel distance of slide shutter for blank exposure) -10 ~ +10 A higher setting increases the margin on both left and right. default: 0 unit: 0.
CHAPTER 10 TROUBLESHOOTING No. Description Settings Remarks 320 Arch adjustment when cassette 2 is used (pick-up roller OFF timing) 0 ~ 63 A higher setting increases the arch. default: 25 unit: 0.27 mm 321 Arch adjustment when cassette 2 is used (pick-up roller OFF timing) 0 ~ 63 A higher setting increases the arch. default: 25 unit: 0.27 mm 322 Arch adjustment when cassette 2 is used (pick-up roller OFF timing) 0 ~ 63 A higher setting increases the arch. default: 25 unit: 0.
CHAPTER 10 TROUBLESHOOTING F. Operation/Inspection Mode [4] • • • • • To activate operation/inspection mode, press [4] on the keypad and then the AE key. To select an item, press the appropriate key on the keypad and then the Start key. To execute the mode, press the Start key. To stop the operation, press the Stop key; the copier returns to selecting an item. If the mode is of a type that stops automatically, the copier automatically returns to selecting an item. Description No.
CHAPTER 10 TROUBLESHOOTING No. Remarks Description 410 Scanner forward stop 411 Pre-exposure lamp on 412 Drum unit installation mode Execute it when installing or replacing the drum unit; a press on the Start key will automatically activate APVC measurement mode; the mode ends in about 23 sec. 450 Back-up RAM clear See p. 10-35 Table 10-16 10-106 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING G. Specification Settings Mode [5] • • • • • To activate specification settings mode, press [5] on the keypad and then the AE key. To select an item, press the appropriate key on the keypad and then the Start key. To change the setting, press the appropriate keys on the keypad and then the AE key. To clear an item, press the Clear key. A press on the Start key executes the respective operation. No.
CHAPTER 10 TROUBLESHOOTING H. Counter Mode [6] • • • • • No. To activate the mode, press [6] on the keypad and then the AE key. To select an item, press the appropriate key on the keypad and then the Start key. To cancel an item, press the Clear key. A press on the Start key executes the respective service operation. To obtain the actual count, multiply the indication by 100.
CHAPTER 10 TROUBLESHOOTING VIII. SELF DIAGNOSIS A. Copier The microprocessor on the copier’s DC controller is provided with a self diagnosis mechanism that checks the condition of the machine (sensors, in particular). The copier runs self diagnosis and, when it identifies an error, indicates a code that represents each specific error. If the copier finds an error associated with E000, E001, E002, E003, and E004, it automatically shuts itself off (error auto power-off).
CHAPTER 10 TROUBLESHOOTING Code E003 E004 E007 E010 Cause Description • Thermistor (TH1, TH2; displacement, poor contact, open circuit) • Fixing heater (H1; open circuit, crack) • Thermal fuse (FU1; malfunction) • Triac (faulty) • DC controller (faulty) • Triac (faulty) • Heater ON detection PCB (faulty) • Fixing film (displacement, tear) • Tension roller (displacement, malfunction) • Fixing film motor (M4; faulty) • Fixing film sensor (PS9; faulty) • Main motor (M1; faulty) • DC controller (faulty) •
CHAPTER 10 TROUBLESHOOTING Code E210 E220 E240 E261 E710 E711 E712 E717 Cause Description • Lens cable (displacement, tear) • Lens home position sensor (PS2; faulty) • Slide shutter (operation) • Blank shutter home position sensor (PS3; faulty) • Change solenoid (SL1; faulty) • Lens motor (M3; faulty) • DC controller (faulty) • The lens home position sensor signal (LHP) is not generated within a specific period of time after the power switch has been turned on.
CHAPTER 10 TROUBLESHOOTING Clearing an Error Code (back-up data) When the self diagnosis mechanism has been activated, the copier may be reset by turning its power off and on. However, this does not work for E000, E001, E002, E003, or E004; this arrangement is to prevent the user from causally resetting any of the errors, which could damage the film or the heater in side the fixing assembly.
CHAPTER 10 TROUBLESHOOTING B.
CHAPTER 10 TROUBLESHOOTING C. Self Diagnosis (sorter) Code E500 E510 E530 Cause Description The CPU or the communications IC on the sorter controller is not operating normally. The feeder motor fails to rotate. An error is detected in the communication between the sorter and the copier. The stapler guide bar swing motor fails to rotate. The home position sensor does not turn off after generation of 2560 pulses of the motor drive signal. • The stapler unit swing sensor does not turn off within 0.
CHAPTER 10 TROUBLESHOOTING Note: Even in down state, the sorter will run a self check and rest if the result is good if you have switched it off and then on without detaching it from the copier. * Simply turn off the joint sensor (MS3) to detach the sorter from the copier; you need not disconnect the communication connector. ** When an E code is indicated. COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
CHAPTER 10 TROUBLESHOOTING 10-116 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAR.
APPENDIX A. B. C. GENERAL TIMING CHART ...............A-1 SIGNALS AND ABBREVIATIONS......A-2 GENERAL CIRCUIT DIAGRAM .........A-3 COPYRIGHT © 1997 CANON INC. D. E. SPECIAL TOOLS ...............................A-5 SOLVENTS/OILS................................A-6 CANON NP6218 REV.
A.
B. SIGNALS AND ABBREVIATIONS 1.
C. GENERAL CIRCUIT DIAGRAM not available COPYRIGHT © 1997 CANON INC. CANON NP6218 REV.
A-4 COPYRIGHT © 1997 CANON INC. CANON NP6218 REV. 0 MAR.
APPENDIX D. SPECIAL TOOLS See the table for the special tools used to service the machine in addition to the standard tools set. No. 1 Tool name Door switch actuator Tool No. TKN-0093-000 Shape Rank Point of use Remarks A Front door 3 Pulley clip FY9-3010-000 COPYRIGHT © 1997 CANON INC. B For adjusting the distance between No. 1 and No. 2 mirrors. B For fixing the scanning cable in place. B A FY9-3009-040 B Mirror positioning tool (comes in pairs; front, rear) A 2 CANON NP6218 REV.
APPENDIX E. SOLVENTS/OILS No. 1 Name Ethl alcohol (Ethanol) Use Composition C2 H5 OH Cleaning: copyboard glass, mirror, etc. (CHZ3)2 CHOH CH3 • CO • C2H5 Methylethyl ketone Isopropyl alcohol (Isopropanol) Description • Flammable. • Use in a well ventilated area. • Avoid breathing concentrated vapor. 2 MEK Removing toner or oil stains 3 Heat-resistant grease Lubricating the drive mechanisms; e.g., copyboard driving gear, fixing drive gear, fixing ass’y, etc.
Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPT. 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIV. CANON INC.
This publication is printed on 70% reprocessed paper. PRINTED IN JAPAN (IMPRIMÉ AU JAPON) 0797S0.
