MULTIFUNCTIONAL DIGITAL COLOR SYSTEMS e-STUDIO3511/4511 File No.
© 2003 TOSHIBA TEC CORPORATION All rights reserved
GENERAL PRECAUTIONS REGARDING THE INSTALLATION AND SERVICE FOR e-STUDIO3511/4511 The installation and service should be done by a qualified service technician. 1. Transportation/Installation • When transporting/installing the equipment, employ four persons and be sure to use the positions as indicated below. The equipment is quite heavy and weighs approximately 112kg (246 lb.), therefore pay full attention when handling it. • Be sure not to hold the movable parts or units (e.g.
3. Main Service Parts for Safety • The breaker, door switch, fuse, thermostat, thermofuse, thermistor, etc. are particularly important for safety. Be sure to handle/install them properly. If these parts are shorted circuit and/or made their functions out, they may burn down, for instance, and may result in fatal accidents. Do not allow a short circuit to occur. Do not use the parts not recommended by Toshiba TEC Corporation. 4.
CONTENTS 1. SPECIFICATIONS/ACCESSORIES/OPTIONS/SUPPLIES .......................................... 1-1 1.1 Specifications ..................................................................................................................... 1-1 1.2 Accessories ........................................................................................................................ 1-5 1.3 Options ...................................................................................................................
5. CONTROL PANEL ........................................................................................................ 5-1 5.1 Control Panel and Display Panel ....................................................................................... 5-1 5.2 Items Shown on the Display Panel .................................................................................... 5-2 5.2.1 Display ....................................................................................................................
8. LASER OPTICAL UNIT ................................................................................................ 8-1 8.1 General Description ........................................................................................................... 8-1 8.2 Structure ............................................................................................................................ 8-3 8.3 Laser Diode ..............................................................................................
12. DEVELOPER UNIT ..................................................................................................... 12-1 12.1 General Description ......................................................................................................... 12-1 12.2 Construction ..................................................................................................................... 12-1 12.3 Sectional View .........................................................................................
15. IMAGE QUALITY CONTROL ..................................................................................... 15-1 15.1 General Description ......................................................................................................... 15-1 15.2 Principle of the Sensor ..................................................................................................... 15-1 15.3 Flow Chart of Control Procedure ......................................................................................
e-STUDIO3511/4511 CONTENTS vi November 2003 © TOSHIBA TEC
1. SPECIFICATIONS/ACCESSORIES/OPTIONS/SUPPLIES 1.1 Specifications Values in [ ] are for e-STUDIO4511 in case that the specification is different between e-STUDIO3511 and e-STUDIO4511. • Copy process • Type Indirect electrophotographic process (dry) Desktop type (Console type: when optional Paper Feed Pedestal (PFP) or optional Large Capacity Feeder (LCF) is installed.
1 * System copy speed Sec. Copy mode e-STUDIO3511 e-STUDIO4511 Single-sided originals 1 set 22.9 ↓ Single-sided copies 3 sets 5 sets 60.9 (181.8) 94.8 (292.2) 49.9 (181.8) 76.3 (292.2) Single-sided originals ↓ 1 set 3 sets 31.3 (95.1) 70.7 (201.8) 30.3 (95.1) 71.9 (201.8) Double-sided copies Double-sided originals 5 sets 1 set 110.1 (311.2) 59.6 (149.6) 101.5 (311.2) 59.5 (149.6) ↓ Double-sided copies 3 sets 5 sets 138.7 (366.6) 217.3 (584.6) 130.4 (366.6) 201.5 (584.
• Reproduction ratio ............. Actual ratio: 100±0.5% Zooming: 1 25 - 400% in increments of 1% (25 - 200% when using RADF) • Resolution/Gradation ........ Read: 600 dpi Write: Equivalent to 2400 dpi x 600 dpi (black copy) Equivalent to 600 dpi x 600 dpi (color copy) • Eliminated portion ............. Leading edge : 3.0±2.0 mm, Side/trailing edges: 2.0±2.0 mm (black copy) Leading edge : 5.0±2.0 mm, Side/trailing edges: 2.0±2.0 mm (color copy) Leading/trailing edges: 5.0±2.0 mm, Side edges: 5.0±2.
• Dimensions of the equipment .......... See the figure below (W660 x D718 x H739 mm) * When the tilt angle of the control panel is 45 degrees. 718 45° 739 1 66 0 Fig.
1.2 Accessories 1 Unpacking/Setup instruction 1 set Operator’s manual 4 pcs. (except for MJD) Operator's manual pocket 1 pc. Power cable 1 pc. Warranty sheet 1 pc. (for NAD) Setup report 1 set (for NAD and MJD) Customer satisfaction card 1 pc. (for MJD) PM sticker 1 pc. (for MJD) Drum (installed inside of the equipment) 1 pc. Control panel stopper 1 pc. Lever 1 pc. Color developer holder 6 pcs. Rubber plug 4 pcs. Blind seal (small / large) 3 pcs. / 1pc. CD-ROM 4 pcs.
1 1.
November 2003 © TOSHIBA TEC 1-7 Staple cartridge STAPLE-600 MJ-1024 Finisher MJ-1023 Finisher Staple cartridge STAPLE-2000 Staple cartridge STAPLE-1600 MJ-1022 Finisher Hole punch unit MJ-6004N/E/F/S MY-1021 Drawer module Scrambler board GP-1030 PCI slot GO-1030 Wireless LAN adapter GN-1010 Expansion memory GC-1180 FAX board 2nd line GD-1160 FAX board GD-1150 Bridge kit KN-3511 Reversing Automatic Document Feeder (RADF) MR-3015 Paper Feed Pedestal (PFP) KD-1011 Damp heater MF-3511 MU
1 e-STUDIO3511/4511 SPECIFICATIONS 1-8 November 2003 © TOSHIBA TEC
2. OUTLINE OF THE MACHINE 2.1 Sectional View 2 [A] Front side view 6 7 5 9 2 3 4 8 11 10 1 12 58 57 64 60 59 55 62 61 82 33 35 44 41 34 36 42 32 31 49 52 47 51 48 40 37 18 17 19 20 15 23 21 22 43 14 39 29 38 80 63 53 28 27 13 56 16 30 45 50 77 78 81 79 72 73 71 46 24 26 25 65 66 67 76 75 74 71 68 69 70 Fig.
2 1 Original glass 42 Color toner cartridge sensor 2 RADF original glass 43 Black toner cartridge 3 Exposure lamp 44 Color toner cartridge C 4 Inverter board 45 Color toner cartridge M 5 Mirror-1 46 Color toner cartridge Y 6 Mirror-2 47 Transfer belt 7 Mirror-3 48 Transfer belt drive roller-1 8 Carriage-1 49 Transfer belt drive roller-2 9 Carriage-2 50 Transfer belt tension roller 10 Lens 51 1st transfer roller 11 CCD board 52 Transfer belt cleaning blade 12 SLG
[B] Rear side view (Drive system) 3 2 2 1 4 5 19 17 20 21 18 6 8 7 12 11 13 10 14 16 15 9 Fig.
2 1 Scan motor 2 Main motor 3 Drum cleaner brush motor 4 Transport motor 5 Registration clutch 6 Toner motor 7 Upper transport clutch (Low speed) 8 Upper transport clutch (High speed) 9 Black developer drive clutch 10 Lower transport clutch (High speed) 11 Lower transport clutch (Low speed) 12 Upper drawer feed clutch 13 Lower drawer feed clutch 14 Tray-up motor 15 Developer motor 16 Black developer lifting clutch 17 Color developer toner supply clutch 18 Color developer
2.2 Electric Parts Layout [A] Unit construction 2 Drive unit PC board unit Scanner unit Control panel unit Fuser unit Automatic duplexing unit Bypass unit Transport unit Process unit Laser unit Front side Paper feeder unit Fig.
[B] Scanner unit (B-1) Motor, sensor, lamp 2 A4 series M15 M1 M14 S7 S6 S5 S4 EXP S3 S2 S1 Front side Fig. 2-202-1 LT series M15 M1 S6 M14 S7 S5 S4 EXP S3 S2 Front side Fig.
(B-2) Switch, PC board, heater, thermostat, other part 2 DH2* SLG SDV CCD THMO2* S41 DH1* INV Front side * ASD/AUD/CND/SAD/TWD models: Standard, NAD/MJD models: Option Fig. 2-203 [C] Control panel unit KEY LCD Front side DSP Fig.
[D] Process unit (D-1) Motor, sensor, switch, clutch, solenoid S16 2 CLT1 S15 M2 S45 S19 S9 S21 S8 S12 S11 S10 SOL1 M20 Front side M16 Fig. 2-205 (D-2) Motor, sensor, switch, solenoid, lamp, heater, thermistor, thermostat M3 S14 S20 SOL2 S17 ERS THMO3* THM4 DH3* S13 Front side * ASD/AUD/CND/SAD/TWD models: Standard, NAD/MJD models: Option Fig.
(D-3) Motor, switch 2 S25 S26 M13 Front side Fig. 2-207 [E] Laser unit SNS LDR M4 Front side Fig.
[F] Paper feeder unit CLT2 S31 2 CLT3 S33 S27 S32 S29 S34 S28 S30 Front side Fig. 2-209 [G] Transport unit S18 CLT5 S22 S42 S43 S44 S24 S23 Front side Fig.
[H] Bypass unit 2 SFB CLT6 SOL3 S35 S36 Front side Fig. 2-211 [I] Automatic duplexing unit S38 S37 ADU M5 S39 CLT7 Front side Fig.
[J] Fuser unit 2 S40 IH-COIL THMO1 THM2 THM3 THM1 Front side Fig. 2-213 [K] Drive unit M17 IH M6 M7 M8 DRV M18 M12 CLT12 M9 CCL CLT14 CLT13 CLT8 CLT15 CLT9 CLT10 M10 M11 CLT16 CLT11 HVT Front side Fig.
[L] PC board unit SYS 2 M19 HDD NIC LGC NF BRK FIL or FUS* PS Front side * NAD/SAD/TWD models: FIL (Standard), ASD/AUD/CND models: FUS (Standard), MJD model: FUS (Option) Fig.
2.3 Symbols and Functions of Various Components The column "P-I" shows the page and item number in the parts list.
(2) Sensors and switches Symbol Name S1-5 APS 1-3, APS-C, APS-R Automatic original detection sensor HOME-SNR S6 Carriage home position sensor PLTN-SNR S7 Platen sensor REVLV-HP-SNR S8 Revolver home position sensor COLR-TNR-SNR S9 Color toner cartridge sensor COLR-ATTNR-SNR S10 Color auto-toner sensor S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 Function Original size detection Carriage home position detection Opening/closing detection of platen cover or RADF Home position detection of
2 Symbol Name S25 CCL-F-POS-SW Charger cleaner front position detection switch CCL-R-POS-SW S26 Charger cleaner rear position detection switch CST-U-TRY-SNR S27 Upper drawer tray-up sensor CST-L-TRY-SNR S28 Lower drawer tray-up sensor EMP-U-SNR S29 Upper drawer empty sensor EMP-L-SNR S30 Lower drawer empty sensor NEMP-U-SNR S31 Upper drawer paper stock sensor NEMP-L-SNR S32 Lower drawer paper stock sensor CST-U-SW S33 Upper drawer detection switch CST-L-SW S34 Lower drawer detection switch SFB-SNR S35 Bypa
(3) Electromagnetic clutches Symbol Name CLT1 TRBLT-CLN-CLT Transfer belt cleaner clutch CLT2 CST-U-FEED-CLT Upper drawer feed clutch CLT3 CST-L-FEED-CLT Lower drawer feed clutch CLT5 2TR-CONT-CLT 2nd transfer roller contact clutch CLT6 SFB-FEED-CLT Bypass feed clutch CLT7 ADU-CLT ADU clutch CLT8 COLR-DEV-TNR-CLT Color developer toner supply clutch CLT9 COLR-DEV-CLT Color developer drive clutch CLT10 K-DEV-CLT Black developer drive clutch CLT11 K-DEV-LIFT-CLT Black developer lifting clutch CLT12 RGST-CLT
(5) 2 PC boards Symbol Name CCD PWA-F-CCD CCD driving PC board (CCD board) PWA-F-SLG SLG Scanning section control PC board (SLG board) PWA-F-SDV SDV Scan motor driving PC board (SDV board) PWA-F-DSP DSP Display PC board (DSP board) PWA-F-KEY KEY Key control PC board (KEY board) PWA-F-LDR LDR Laser driving PC board (LDR board) PWA-F-SNS SNS H-sync signal detection PC board (SNS board) PWA-F-SFB SFB Bypass tray slide guide width detection PC board (SFB board) PWA-F-ADU ADU ADU driving PC board (ADU board)
(6) Lamps and heaters Symbol Name EXP LP-EXPO Exposure lamp LP-ERS ERS Discharge LED IH-COIL IH-COIL IH coil SCN-L-DH DH1 Scanner damp heater (Left) DH2 SCN-R-DH Scanner damp heater (Right) DH3 DRM-DH Drum damp heater (7) Function Exposing the original to the light Remarks P-I B-1 P26 - I6 Removing the residual charge from the drum surface Heating the fuser roller D-2 P28 - I12 J P41 - I7 Preventing condensation of the mirrors of the carriages * ASD/AUD/CND/SAD/TWD models: Standard * NAD/MJD
(8) 2 Transformer Symbol Name HVT PS-HVT High-voltage transformer (9) Function Remarks P-I Generating high-voltage and supplying K P7 - I10 it to the following sections • Main charger wire • Main charger grid • Developer bias (color and black) • Transfer bias (1st and 2nd transfer) Others Symbol Name INV INV-EXP Inverter board LCD LCD LCD panel HDD HDD Hard disk PS-ACC PS Switching power supply NS-FILTER NF Noise filter BREAKER BRK Breaker e-STUDIO3511/4511 OUTLINE OF THE MACHINE Function Controlli
November 2003 © TOSHIBA TEC 2 - 21 NCU (LINE-2) PSTN Modem NCU (LINE-1) FAX PSTN External TEL FAX NIC Parallel port (IEEE-1284) USB connector (host) USB connector (device) LAN connector (10BASE-T/100BASE-TX) HDD Scrambler board Scrambler board Control panel RADF Flash ROM 512KB 16 Data-bus Amp A/D Amp A/D SRAM 128KB 8 (B/K-even) (G/K-odd) Download jig 8 CCD Amp A/D CCD PCI external slot (R) 32 Scanner CPU 22MHz 16 8 ASIC SLG ASIC 32 LVDS driver ASIC 32 Download
2 2.4.2 Construction of boards (a) Construction diagram of boards This system consists of the following including the SYS board as a main board.
DSP board: This is the board to mainly control the control panel. The Panel processing CPU detecting the input from each button and touch panel, and the lighting control circuit for the backlight of the LCD are mounted. And it relays the control signal of the control panel from the SYS board to the LCD and KEY board. KEY board: This is the board on which each button switch and each LED on the control panel are mounted. LDR board: This is the board on which the laser diode and the ASIC are mounted.
2 LGC board: This is the board to mainly control the print function (printer engine). It consists of the Engine-CPU, ASIC, memory (Flash ROM, SRAM, NVRAM), etc. The Engine-CPU controls each ASIC to drive I/O (electrical parts) of each section in the system. It leads to the operation of the laser unit, revolver, developer unit, drum, transfer belt, drawers, bypass unit, ADU, etc. And then the print is made.
2.5 Disassembly and Replacement of Covers and PC boards 2.5.1 Covers 2 [A] Front cover / Toner bag (1) Open the front cover. Fig. 2-501 (2) Remove the toner bag. Fig. 2-502 (3) Pull up 2 hinge pins (on the left and the right) and then extract them inside. (4) Take off the front cover. Hinge pin Hinge pin Fig. 2-503 [B] Receiving tray (1) Open the front cover ( Chapter 2.5.1 [A]). (2) Remove 2 screws and pull out the receiving Receiving tray tray. Fig.
[C] Tray back cover (1) Remove the receiving tray ( 2 Chapter 2.5.1 [B]). (2) Remove 1 screw and take off the tray back cover. Tray back cover Fig. 2-505 Black developer unit cover [D] Front lower cover (1) Take off the front cover ( Chapter 2.5.1 [A]). (2) Take off the black developer unit cover ( Chapter 12.8 (A-1)). (3) Release 4 latches and take off the front lower cover. Latch Latch Front lower cover Fig.
[G] Left rear cover (1) Remove 2 screws and take off the left rear 2 cover. Left rear cover Fig. 2-509 [H] Left upper cover (1) Remove 2 screws and take off the left upper cover. Left upper cover Fig. 2-510 [I] Front upper cover (1) Take off the left upper cover ( Chapter 2.5.1 [H]). (2) Remove 2 screws. Take off the front upper cover. Fig. 2-511 [J] Right upper cover (1) Remove 3 screws and take off the right upper cover. Fig.
[K] IH terminal cover 2 Fuser unit cover Caution: Be sure to unplug before the work, not to get an electricshock. Jam access cover (1) Open the ADU. (2) Open the jam access cover. ADU (3) Open the fuser unit cover. Fig. 2-513 (4) Remove 2 screws and take off the IH terminal IH terminal cover cover. Fig. 2-514 [L] Right rear cover (1) Open the ADU. Fig. 2-515 (2) Take off the IH terminal cover ( Chapter IH terminal cover 2.5.1 [K]). (3) Remove 1 screw and take off the ozone filter cover.
[M] Right lower cover (1) Take off the right rear hinge cover ( Chapter 2 2.5.1 [N]). (2) Remove 2 screws and take off the right lower Right rear hinge cover cover. Right lower cover Fig. 2-517 [N] Right rear hinge cover (1) Remove 2 screws and take off the right rear hinge cover. Right rear hinge cover Fig. 2-518 [O] Right front hinge cover (1) Pull out the upper and lower drawers slightly. (2) Remove 2 screws and take off the right front hinge cover. Right front hinge cover Fig.
[Q] Upper rear cover (1) Take off the ADF or the platen cover. 2 (2) Take off the left upper cover ( Chapter 2.5.1 [H]). (3) Take off the right upper cover ( Chapter 2.5.1 [J]). (4) Remove 2 screws and take off the upper rear cover. Upper rear cover Fig.
2.5.2 PC boards Note: When the PC board/HDD is replaced, refer to each CAUTIONS of TROUBLESHOOTHING in the SERVICE HANDBOOK. [A] Logic PC board (LGC board) 2 (A-1) LGC board case (1) Take off the rear cover ( Chapter 2.5.1 [P]). LGC board cover (2) Loosen 13 screws and take off the LGC board cover (plate cover). Fig. 2-522 (3) Disconnect 20 connectors, release 12 harnesses from harness clamps, remove 5 screws and take off the whole LGC board with the case. LGC board case Fig.
(3) Loosen 9 screws and take off the SYS board upper cover. 2 SYS board upper cover Fig. 2-526 (4) Loosen 3 screws, disconnect 2 connectors and Connector take off the SYS board lower cover. SYS board lower Fig. 2-527 (5) Remove 4 screws and take off the hard disk from the SYS board lower cover. Hard disk Fig. 2-528 [C] System control PC board case (SYS board case) (1) Take off the SYS board lower cover ( Chapter 2.5.2 [B]). (2) Disconnect 5 connectors. Fig.
(3) Remove 4 screws and take off the SYS board Harness clamp case. Connector Harness clamp SYS board case Fig. 2-530 [D] NIC board / System control PC board (SYS board) (1) Take off the SYS board lower cover ( Chapter 2.5.2 [B]). (2) Disconnect 6 connectors. Fig. 2-531 (3) Remove 2 screws, release 1 lock support. Then take off the NIC board. NIC board Fig. 2-532 (4) Remove 9 screws, release 1 lock support. Then take off the SYS board. SYS board Fig.
[E] Power supply unit (1) Take off the rear cover ( (2) Disconnect 8 connectors. (3) Remove 3 screws and take off the whole switching power supply unit with the bracket. Note: Be careful not for the power supply unit to be caught by harnesses. Power supply unit Fig. 2-534 (4) Disconnect 1 connector, remove 4 screws and Connector take off the power supply cooling fan. FLOW 2 Chapter 2.5.1 [P]). Power supply cooling fan Fig. 2-535 (5) Remove 11 screws and take off the cover of the power supply unit.
[G] Noise filter (1) Take off the right rear hinge cover and the right lower cover ( 2 Chapter 2.5.1 [N] [M]). (2) Disconnect 4 connectors, remove 1 screw and take off the noise filter. White Black Fig. 2-538 [H] Fuse board (FUS board) (1) Take off the right rear hinge cover and the right lower cover ( Chapter 2.5.1 [N] [M]). (2) Remove 5 screws to take off the unit and turn it over. Fig. 2-539 (3) Disconnect 3 connectors and release 4 lock supports (white arrow) to take off the fuse board.
[I] Driving PC board (DRV board) (1) Take off the LGC board case 2 ( Chapter 2.5.2 [A]). (2) Disconnect 5 connectors, remove 1 screw and DRV board with the bracket. DRV board Fig. 2-541 2.5.3 Options [A] MR-3015 (Reversing Automatic Document Feeder (RADF)) (1) Turn OFF the power and unplug the power cable. (2) Take off the connector cover. Fig. 2-542 (3) Disconnect the connector. Fig. 2-543 (4) Remove 2 screws on the rear side. Fig.
(5) Open the RADF. 2 Fig. 2-545 (6) Remove 2 screws on the front side. Fig. 2-546 (7) Slide the RADF backward and take off by lifting it up. Fig. 2-547 Note: When disinstalling the RADF and installing A the platen cover, or disinstalling the platen cover and installing the RADF, tighten the screw which installs the damper holding bracket of the scanner at the following B positions. Installing the RADF: A Installing the platen cover: B Fig.
[B] KD-1011 (Paper Feed Pedestal (PFP)) (1) Turn OFF the power and unplug the power 2 cable. (2) Remove 7 screws and take off the rear cover of the equipment. Note: Disconnect the connector of the RADF first when the RADF is installed. Fig. 2-549 (3) Remove 1 screw and the ground wire, and then disconnect 2 connectors (3 if the optional damp heater is installed). Connector of optional damp heater Fig. 2-550 (4) Remove 2 screws and take off 2 fixing brackets on the rear side. Fig.
(6) Remove 4 screws and take off 2 fixing brackets on the front side. 2 Fig. 2-553 (7) Lift up the equipment and take off the PFP. Fig. 2-554 [C] KD-1012 (Large Capacity Feeder (LCF)) (1) Turn OFF the power and unplug the power cable. (2) Remove 7 screws and take off the rear cover of the equipment. Note: Disconnect the connectors of the RADF first when the RADF is installed. Fig.
(4) Remove 2 screws and take off 2 fixing brackets on the rear side. 2 Fig. 2-557 (5) Take off the lower drawer of the equipment. Fig. 2-558 (6) Pull out the LCF drawer. Fig. 2-559 (7) Remove 4 screws and take off 2 fixing brackets on the front side. Fig.
(8) Lift up the equipment and take off the LCF. 2 Fig. 2-561 [D] MJ-1022 (Hanging finisher) (1) Turn OFF the power and unplug the power cable. (2) Take off the connector cover and disconnect the connector. Fig. 2-562 (3) Remove 2 screws and take off the safety bracket on the rear side and the cover. Fig. 2-563 (4) Remove 2 screws and take off the safety bracket on the front side and the cover. Fig.
(5) Remove 2 screws. 2 Fig. 2-565 (6) Lift up the finisher and take it off. Fig. 2-566 (1) Turn OFF the power and unplug the power cable. (2) Take off the connector cover and disconnect the connector. Fig. 2-567 (3) Remove 2 screws and take off the cover on the rear side. Fig.
(4) Remove 2 screws and take off the cover on the front side. 2 Fig. 2-569 (5) Remove 2 screws. Fig. 2-570 (6) Lift up the finisher and take it off. Fig.
[E] MJ-1023 (Console finisher) (1) Turn OFF the power and unplug the power 2 cable. (2) Take off the connector cover and disconnect the connector. Fig. 2-572 (3) Remove 1 screw and take off the finisher lower cover. Fig. 2-573 (4) Remove 3 screws and take off the finisher front cover. Fig. 2-574 (5) Remove 1 screw. Fig.
(6) Remove 1 screw and take off the cover of the finisher rear side. 2 Fig. 2-576 (7) Remove 1 screw. Fig. 2-577 (8) Take off the finisher. Note: Be careful not to fell the finisher when moving the finisher unit only. Fig. 2-578 [F] MJ-1024 (Console finisher) (1) Turn OFF the power and unplug the power cable. (2) Take off the connector cover and disconnect the connector. Fig.
(3) Open the finisher front cover and remove 1 screw. 2 Fig. 2-580 (4) Remove 1 screw and take off the cover of the finisher rear side. Fig. 2-581 (5) Remove 1 screw. Fig. 2-582 (6) Take off the finisher. Note: Be careful not to fell the finisher when moving the finisher unit only. Fig.
[G] MJ-6004 (Hole punch unit) (1) Turn OFF the power and unplug the power 2 cable. (2) Take off the connector cover and disconnect connector. Fig. 2-584 (3) Open the front cover of the hole punch unit and remove 1 screw. Fig. 2-585 (4) Take off the cover of the punch unit lower side. Fig. 2-586 (5) Remove 1 screw. Fig.
(6) Remove 3 screws and take off the punch unit rear cover. 2 Fig. 2-588 (7) Remove 1 screw. Fig. 2-589 (8) Take off the finisher with the hole punch unit. Note: Be careful not to fell the finisher when moving the finisher unit only. Fig. 2-590 (9) Disconnect 2 connectors. Fig.
(10) Remove 2 screws. 2 Fig. 2-592 (11) Lift up the punch unit and take it off. Fig. 2-593 [H] KN-3511 (Bridge unit) (1) Turn OFF the power and unplug the power cable. (2) Remove 2 screws and take off the cover. Fig. 2-594 (3) Disconnect 1 connector. Fig.
(4) Open the bridge unit. Remove 1 screw and take off the cover. 2 Fig. 2-596 (5) Close the bridge unit and remove 1 screw. Fig. 2-597 (6) Remove 4 screws and take off the bracket. Fig. 2-598 (7) Lift up the bridge unit and release the hook. Take off the bridge unit toward the front. Fig.
3. COPY PROCESS 3.1 Expression of Colors and 4-Step Copy Process A variety of colors can be expressed by mixing the 3 three primary colors : Yellow, magenta and cyan. Red can be created by mixing yellow and magenta; Yellow blue can be created by mixing magenta and cyan; green is created by mixing cyan and yellow; and Red mixing all the three primary colors allows you to Green Black obtain black.
3.2 General Description of Copying Process 9 2 6 Original exposure 3 Xenon lamp -1000 V 1800V (400 to 4000V) 16 W Paper exit Cleaning 1st transfer 10 Discharging (LED array) 8 Wavelength 660nm x 14pcs. Fusing IH coil 5-2 700 to 1300 W Color development Magnetic roller bias -400V (-100 to -900V) DC 1.
3.3 Details of Copying Process (1) Photoconductive drum The photoconductive drum consists of two layers. The outer layer is a photoconductive layer made of Photoconductive layer an organic photoconductive carrier (OPC), and the Base inner layer is an aluminum conductive base in a Structure of the photoconductive drum (Example of OPC) cylindrical form. Fig. 3-301 The photoconductive carrier has a special property: when it is exposed to light, the electrical resistance strength of the light.
(3) Data reading (scanning) Data reading is a process of illuminating the original with light and converting the reflected light into 3 CCD board electrical signals. The light reflected from the original is directed to Scanning section control PC board the Charge Coupled Device (CCD) and this optical image information is converted to electrical signals (image signals), which are then transmitted to the Image processing section image processing section via the scanner control PC board. Fig.
(5) Development Development is a process of making the electrostatic latent images visible to the eye Drum Magnetic roller (visible image). 3 Developer material is supplied to the photoconductive drum surface by means of a magnetic roller, allowing the toner in the Fig. 3-306 developer material to adhere to the areas on the drum surface where the potential is lower than the developer bias which is applied to the magnetic roller (reverse development).
Coloring agent (5-10%) • About developer material The developer material is comprised of a mixture of toner and carrier. The toner is charged to a negative polarity and the carrier to a positive 5-13µm polarity, due to the friction with each other Resin (90-95%) caused by mixing. [Toner] Toner : Mainly consists of resin and coloring. Ferrite Carrier: Consists of ferrite, and over its surface resin coating to provide consistent frictional electrification. 30-100µm [Carrier] Fig.
(6) 1st transfer Transfer belt • 1st transfer is a process of transcribing the toner image (visible image) formed on the photoconductive drum to the transfer belt. A 3 positive bias is applied to the transfer roller, causing the transfer belt to be positively charged. This in turn helps to form an electric field E between the transfer belt (positive) and Photoconductive drum the photoconductive layer of the Fig.
(8) Fusing process Fusing is a process of melting the toner on the paper and fixing it firmly onto the paper. 3 Method : The softening point of the toner (main component : resin) is 105 - 1200C. Fuser belt → Separation roller (Heat) Toner is melted by the fuser belt. + Press roller Fuser roller (Pressure) The fuser belt is pressed against the Fig. 3-315 pressure roller by the springs to increase adherence of the melted toner to the paper.
• Cleaning Recovery blade The edge of the conductive blade is pressed against the photoconductive drum surface to scrape off residual toner. The toner removed is then caught 3 by the recovery blade. Drum rotation Conductive blade (10) Discharging process Discharging is a process of eliminating the (–) charge Fig. 3-317 remaining on the photoconductive drum before the next charging process.
3.4 List of Copying Process Conditions Process 3 FC-210/310 e-STUDIO3511/4511 1. Photoconductive drum (1) Sensitivity OD-FC31 (OPC drum) (1) Sensitized drum (ø30) OD-3511 (OPC drum) (1) Highly sensitized drum (ø90) 2. Charging Scorotron type -250 to -1000 V (grid voltage) Scorotron type -300 to -1200 V (grid voltage) (adjusting by image quality control) (adjusting by image quality control) (1) Semiconductor laser (adjustment not required) (1) Same as FC-210/310 (2) 6.
Process 8. Photoconductive drum cleaning (1) Method FC-210/310 e-STUDIO3511/4511 (1) Blade cleaning (1) Same as FC-210/310 (2) Recovered toner (3) Transfer charge removal (2) Non-reusable (3) Simultaneous cleaning and (2) Same as FC-210/310 (3) Same as FC-210/310 discharging by the conductive blade 9. Transfer belt cleaning - Blade cleaning (contact/release mechanism) 10.Discharge 11.
3 e-STUDIO3511/4511 COPY PROCESS 3 - 12 November 2003 © TOSHIBA TEC
4. GENERAL OPERATION 4.1 Overview of Operation Operation of equipment Operation during initializing, pre-running and ready Drawer feed copying by the [START] button Copying operation Bypass feed copying Interrupt copying 4.2 Description of Operation 4.2.1 Warming-up (1) Initialization • Power ON • IH coil ON • Set number “1”, reproduction ratio “100%” and “Wait Warming Up” are displayed. • Fan motors ON • Initialization of laser optical system - The polygonal motor rotates in low speed.
4.2.2 Ready (ready for copying) • Buttons on the control panel enabled • When no button is pressed for a certain period of time, - Set number “1” and reproduction ratio “100%” are displayed. Equipment returns to the normal ready state. 4 4.2.
• Black developer lifting clutch, black developer bias (-) turned ON - Contact the black developer roller to the drum surface • Laser emission (black image) • Black developer drive clutch and black developer bias (AC) turned ON • 1st transfer (black image) - Black image is transferred to the transfer belt • Black developer bias (AC) turned OFF • Black developer lifting clutch turned ON and black developer drive clutch turned OFF - Release the black developer roller from the drum surface • Black developer bi
• Transfer belt cleaner clutch and transfer belt cleaner auger motor turned OFF • Main charger and 1st transfer bias turned OFF 4 2) Black printing operation • Black developer lifting clutch, black developer bias (+150), transfer belt cleaner clutch, toner recovery auger, drum cleaner brush, discharge LED and cleaning blade bias turned ON • Transfer belt cleaner auger motor turned ON - Transfer belt used toner auger is driven • Main charger and 1st transfer bias turned ON • Black developer lifting clutch
Timing chart for copying (A4/LT size, 1 sheet from upper drawer) (ms) 0 fwd. rev.
4.2.4 Bypass feed copying (1) Insert a paper into the bypass tray. • Bypass paper sensor is turned ON. - “Ready for bypass feeding” is displayed. • Carriages move to the home position. 4 (2) Press the [START] button ON • “Ready for bypass feeding” changes to “COPYING”. • Exposure lamp ON • Scan motor ON → Carriages-1 and -2 move forward. • Main motor, transport motor, developer motor and exit motor turned ON - The drum, fuser unit, developer unit and exit roller are driven.
4.3 Detection of Abnormality When something abnormal has occurred in the equipment, symbols corresponding to the type of abnormality are displayed. 4.3.
4 • When the power is turned ON or LCF drawer is inserted (When the power is turned ON or equipment/PFP drawers are inserted). LCF performs initialization. ↓ Detects the presence of paper Tray-up motor ON - The tray goes up At this time, the tray-up sensor and LCF empty sensor are OFF.
A-2) Bypass misfeeding ( ) • During bypass feeding Bypass feed clutch is turned ON ↓ Registration sensor is turned ON * Registration sensor is not turned ON in a fixed period of time (E120) ↓ Bypass misfeeding ↓ Bypass misfeed symbol is displayed ( ) ↓ The copying operation is disabled. ↓ Solution: The bypass sensor is turned OFF by removing the paper from the bypass tray.
4 • Exit sensor detects jamming of the trailing edge of paper Registration clutch turned OFF ↓ Approx 1.3 sec* Exit sensor turned OFF If the exit sensor is not turned OFF after approx 1.3 seconds, ↓ Paper jam (E020) → The copying operation is stopped. Registration clutch OFF Exit sensor ON Timer Approx 1.3 sec. Paper jam (E020) Fig.
B-2) Add toner ( ) Toner density becomes low ↓ Auto-toner sensor detects the absence of the toner ↓ Control circuit → “Add toner” is displayed: the copying operation disabled Solution: Open the front cover and replace the toner cartridge with new one. Toner is supplied → copying operation enabled B-3) Developer unit not installed properly Disconnection of the connectors of the developer unit ↓ “Developer unit not installed” is displayed.
4.4 Flow Chart 4.4.1 Power ON to ready Main switch ON DC power ON 4 Restart YES Cover open? NO IH coil ON Fans ON YES Registration sensor ON? Scan motor ON Main motor ON Revolver motor ON Polygonal motor ON NO YES Exit sensor ON? Home position detected? YES NO YES ADU entrance/exit sensor ON? NO YES NO Upper drawer feed sensor ON? 2.5 sec.
A Fuser belt ready for prerunning? 4 NO YES Transport motor ON Tray-up motor ON NO Fuser belt reached ready temp.
4.4.
C D E Black developer lifting clutch ON Black developer bias (+150) ON Transfer belt cleaner clutch ON Toner recovery auger ON Drum cleaner brush ON Discharge LED ON Cleaning blade bias ON Transfer belt cleaner auger motor ON Color developer bias (AC) ON Color developer bias (-) ON Color developer drive clutch ON 1st transfer (yellow image) Transfer belt cleaner clutch OFF Transfer belt cleaner auger motor OFF Color developer drive clutch OFF Color developer bias (AC) OFF Color developer bias (-) OFF
F 4 Black developer lifting clutch ON Black developer bias (+150) ON Transfer belt cleaner clutch ON Toner recovery auger ON Drum cleaner brush ON Discharge LED ON Cleaning blade bias ON Transfer belt cleaner auger motor ON Main charger ON 1st transfer bias ON Black developer lifting clutch ON Black developer bias (-) ON Black developer position corrected? YES NO Call for service "CEB0" Laser emission (black image) Black developer drive clutch ON Black developer bias (AC) ON 1st transfer (black image)
5. CONTROL PANEL 5.1 Control Panel and Display Panel The control panel consists of button switches and touch-panel switches to operate equipment and select various modes, and LEDs and an LCD to display the state of the equipment or the messages. When the operator’s attention is required, graphic symbols appear with messages explaining the condition of the equipment in the LCD panel. This equipment has a movable control panel which enables to adjust its angle to the operator.
5.2 Items Shown on the Display Panel 5 Fig. 5-201 Fig.
5.2.1 Display No.
5 No. Message 20 READY (SADDLE STITCH TRAY FULL) 21 READY (CHANGE DRAWER TO CORRECT PAPER SIZE) 22 Ready for bypass feeding 23 COPYING State of equipment Saddle stitcher tray is full of paper - Scanning is enabled Note Incorrect paper size setting Paper is set on the bypass tray At the copying state 24 Auto Start Auto Start is set during printing 25 Close Large Capacity Feeder Close Large Capacity Feeder Door Place Doc.
No.
5 No.
No. Message 73 The number of originals exceeds the limits. Will you save stored originals? 74 Install new Black toner cartridge 75 76 77 78 79 80 81 82 83 84 85 86 87 88 State of equipment Displayed when confirming the user to save the scanning data as much as stored at memory-full state Note Displayed only in Scanning Function No black toner in the cartridge Displayed when black toner is running out even if other toner still remain.
Display not changed Display not changed Press [STOP] button e-STUDIO3511/4511 CONTROL PANEL 5-8 Press [START] button with the original set on RADF Press [EXTENSION] button Press [TEMPLATE] button Press [USER FUNCTIONS] button Press [HELP] button Press [e-FILING] Displays “COPYING” Displays TEMPLATE screen Displays USER FUNCTIONS screen Displays HELP screen Display not changed Display not changed Display not changed Displays HELP screen Display not changed Display not changed Display not changed
5.4 Description of Operation 5.4.1 Dot matrix LCD circuit (1) Structure 5 (640 x 240) Fig. 5-401 The DSP-LCD-350 is an STN blue mode transmissive type LCD with 640x240-dot display capacity. It consists of a driver LSI, frame, printed circuit board, and lateral type CCFL backlight.
(3) System diagram Signals flowing between the control panel and the system board are indicated in the chart below. When the panel processing CPU detects that the control panel is operated, the operational contents are transmitted to the System board through the serial data. The state of the equipment and the messages from the System board are received by the LCD controller and then displayed on the LCD. The LED and buzzers are switched to ON/OFF with the signals from the System control PC board.
5.4.2 LED display circuit (1) Method of LED display ex) Displaying “COPY” . 5VL Current LDON0 "L" "L" 17 D7 G Q3 (COPY) LED 5 R3 IC Fig. 5-405 Transistor is turned ON when the LDON 0 signal becomes “L” level. Also, when IC pin changes to “L”, the current flows from 5VL via the transistor to the LED (“COPY”) to turn ON the LED (“COPY”). Conditions to turn ON the LED (a) The transistor (Q3) connected to the LED anode is ON. (b) The output from the cathode side of the LED is “L” level.
5.5 Disassembly and Replacement Note: When taking off the control panel, check the position of the stopper; if the stopper is at a b the position “b”, remove the stopper or move it to the position “a”. 5 Fig. 5-501 [A] Stopper (1) Slide the stopper and pull it out. Stopper Fig. 5-502 [B] Control panel unit (1) Take off the right upper cover and the front upper cover ( Chapter 2.5.1 [J] [I]). (2) Disconnect 1 connector. (3) Remove 2 screws and take off 2 harness clamps. Fig.
(6) Remove 3 screws and take off the cover. 5 Fig. 5-505 (7) Remove 5 screws and take off the hinge bracket. Fig. 5-506 (8) Disconnect 5 connectors and 1 harness clamp, take off the DSP board. Fig. 5-507 (9) Remove 4 screws and take off the LCD. Fig.
(10) Remove 16 screws and take off the KEY board. 5 Fig.
6. SCANNER 6.1 Function In the scanning section of this equipment, the surface of an original is irradiated with a direct light and the reflected light is led through mirrors, a lens and a slit to CCD where optical-to-electrical conversion is performed, converting the optical image data into an electrical (analog) signal. This analog signal is changed to a digital signal, which then undertakes various corrective processes necessary for image formation.
6.2 Construction The following shows the construction and purpose of the scanning system: (1) Original glass This is a glass on which an original is placed. The light from the exposure lamp is irradiated to the original through this glass. (2) Carriage-1 Carriage-1 consists of the exposure lamp, lamp inverters, reflector, mirror-1, etc. It is driven by the scan motor and scans an original on the glass. 6 Reflector Lamp inverter Exposure lamp Mirror-1 Fig. 6-201 a.
(3) Carriage-2 Carriage-2 mainly consists of the mirror-2, mirror-3, etc. and directs the reflected light from the mirror1 through the mirrors-2 and -3 to the lens. This carriage is driven by the same scan motor as that for the carriage-1 at half the scanning speed of the carriage-1 (The scanning distance is also half that of the carriage-1). Mirror-2 6 Mirror-3 Fig.
6.3 Description of Operation 6.3.1 Scan motor Carriage-1 Scan motor Wire pulley 6 Motor speed-reduction pulley Carriage-2 Motor pulley Idler pulley Fig. 6-301 (a) Scanning of an original placed on the original glass This motor drives the carriages-1 and -2 through the timing belt and carriage wire. First, the scan motor drives the carriages-1 and -2 to their respective home positions. The home positions are detected when the carriage-1 passes the home position sensor.
6.3.2 Scanning drive circuit The scan motor is a 2-phase stepping motor and driven by the driver IC-STK-672-071. PS-ACC-350 +24V +24V DIG GND +24V B Voltage to set value for motor current SCNVREF B A SCNREF M Scan motor +24V Scanner CPU A SCCLK-0 Clock input SMDT2-1 Excitation mode setting (3) SMDT1-1 Excitation mode setting (2) SMDT0-1 Excitation mode setting (1) CWCCW-0 Rotation direction setting H.
Input/output signals Clock input SCNCLK Motor is rotated by setting number of pulse. Input * Internal circuit of the motor driver works when the first pulse becomes ON and the last pulse becomes OFF. The direction of the motor rotation is determined by setting level of Set the direction of motor rotation 6 Cut off the drive output Voltage to set value for the SCNDIR Input “H” .. Counterclockwise direction (as seen from the output shaft) Excitation drive is forcibly turned ON/OFF. SCNEN Input “H” .
6.3.3 Initialization at power-ON The carriage moves to its home position and performs the peak detection. Then it moves to the carriage waiting position and waits.
6.4 Control of Exposure Lamp 6.4.1 General description Control circuit for the exposure lamp consists of the following two blocks: (1) Lighting device for the xenon lamp (Inverter) Turns ON/OFF the exposure lamp. (2) CCD circuit This circuit converts the reflected light amount from the original surface and the shading correction plate to electrical signals.
6.4.2 Exposure lamp External electrode type xenon fluorescent lamp is used as an exposure lamp in this equipment. (1) Structure Fluorescer is applied on the inside surface of the lamp pipe (except a part to be an opening) which is filled with the xenon gas. A pair of the external electrodes covered by the film with the adhesive agent is attached over the pipe. PET film 6 Aluminum tape electrode Glass valve Fluorescer Adhesive agent, PET, film Xenon gas Fig.
6.4.3 Control circuit for the exposure lamp SLG board +5VSW +24V LMPEN LMPON IC16 LAMP LAMP B Xenon lamp 5VSWON RN2401 RN1401 WDTOUT 6 LP-EXPO-350 INV-EXPO-350 Scanner CPU Fig. 6-404 Working conditions LAMP ON L - - - Exposure lamp ON signal Lamp turns ON at “L” 5VSW ON L H - - 5V SW ON signal Controls 5VSW by CPU.
6.5 General Description of CCD Control 6.5.1 Opto-electronic conversion A CCD (Charge-Coupled Device) is used to produce electrical signal corresponding to the reflected light amount from the original. CCD is a one-chip opto-electronic conversion device, comprised of several thousand light-receiving elements arranged in a line, each one of them is a few micron square. This equipment includes a CCD which has 7,450 light-receiving elements.
6.6 Automatic Original Size Detection Circuit This circuit detects the size of original (standard sizes only) using the reflection type photosensors arranged on the base frame of the scanner unit. 6.6.1 Principle of original size detection Reflection type photosensors are placed on the base frame of the scanner unit as shown in the Fig. 6601. Each sensor consists of an infrared Light Emitting Diode (LED) on the light emitting side, and a phototransistor on the light receiving side.
[A4 Series] A5 B5 A4 APS-R APS-C 6 A5–R B5–R A4–R APS-3 B4 APS-1 APS-2 A3 [LT Series] ST LT APS-R APS-C ST–R APS-3 LT–R LG APS-2 LD Fig.
(4) Original size is determined by the combination of the signals output from each detection point. Combination charts for size determination of A4 series and LT series are as follows.
About reflection type photosensor The reflection type photosensor is comprised of an infrared light emitting diode and a phototransistor. It uses pulse modulation to detect an original. Original 8 µsec. 130 µsec. Phototransistor LED 6 Fig. 6-604 The light emitting diode is driven by a pulse having a 130 µsec. cycle and an 8 µsec. ON time. When the phototransistor receives the same signal as this pulse, it is determined that there is an original.
6.7 Disassembly and Replacement [A] Original glass (1) Take off the right upper cover ( Chapter 2.5.1 [J]). (2) Remove 2 screws and take off the fixing bracket. Fixing bracket 6 Fig. 6-701 (3) Remove the original glass. Original glass Fig. 6-702 Connector [B] Lens cover (1) Remove the original glass ( Chapter 6.7 [A]). (2) Disconnect 1 connector, remove 5 screws and take off the lens cover. Lens cover Fig. 6-703 [C] SLG board cooling fan (1) Take off the lens cover ( Chapter 6.7 [B]).
[D] Automatic original detection sensor (APS sensor) APS sensor (D-1) A4 series (1) Remove the original glass ( Chapter 6.7 [A]). (2) Disconnect 1 connector and remove 1 screw for each APS sensor. Take off 5 APS sensors. 6 Fig. 6-705-1 APS sensor (D-2) LT series (1) Remove the original glass ( Chapter 6.7 [A]). (2) Disconnect 1 connector and remove 1 screw for each APS sensor. Take off 4 APS sensors. Fig.
[F] Lens unit (1) Remove the lens cover ( Chapter 6.7 [B]). (2) Disconnect 1 connector and remove 5 screws. Then remove 2 screws and 2 ground wires and Ground wire take off the lens unit. Notes: 1. When installing the lens unit, fix it while pushing it to the direction of the white arrow. 6 Lens unit 2. For adjustment, refer to “3.9.2 Lens Unit” Fig. 6-708 in the Service Handbook. 3. Do not touch 4 screws shown with the arrows when replacing the lens unit. Fig. 6-709 4. Handle the unit with care.
(4) Remove 3 screws and take off the scan motor with the whole bracket. Note: When installing the scan motor, fix it with a belt tension jig (spring). Scan motor 6 Fig. 6-712 Notes: When installing the scan motor, use the belt Belt tension jig tension jig (spring). The procedure is as follows. 1. Fix the screw A. 2. Temporarily fix the screw B and C. C 3. Hook the belt tension jig to the motor bracket and the flame. 4. The scan motor is pulled by the belt A tension jig.
(4) Remove the square seal fixing the lamp cable to the base. Release the harness from the harness clamp. Disconnect the connector of the lamp cable from the SLG board. 6 Fig. 6-715 (5) Take off the carriage-1 while inclining it. Note: When replacing the mirror-1, replace the carriage-1 together with mirror-1. Mirror-1 should not be removed. Carriage-1 Fig. 6-716 Notes: 1. When installing carriage-1, fix the bracket (A) temporarily at the position (A).
(7) Attach the wire holder jigs to the pulleys to prevent the wires from loosening. Note: Refer to “3.9 Adjustment of the Scanner Section” in the Service Handbook for the direction of the wire holder jigs. 6 Fig. 6-719 (8) Detach the tension springs of the front and rear Carriage wire Tension spring sides. (9) Remove the carriage wires. Fig. 6-720 (10) Take off the carriage-2 while its corner is pushed into the window of the rail and inclining the carriage.
[I] Platen sensor Carriage home position sensor (1) Take off the upper rear cover ( Chapter 2.5.1 [Q]). (2) Disconnect 1 connector. Release the latches and take off the platen sensor. [J] Carriage home position sensor (1) Take off the upper rear cover ( Chapter 2.5.1 Platen sensor [Q]). 6 Fig. 6-723 (2) Disconnect 1 connector. Release the latches and take off the carriage home position sensor. [K] Scanning section control PC board (SLG board) (1) Take off the lens cover ( Chapter 6.7 [B]).
7. IMAGE PROCESSING 7.1 General Description The following diagram shows the process of this equipment from scanning of original to writing data on the photoconductive drum surface. Scanning section Image processing section Original Writing section Image processing / System board [SYS] 7 Original glass Scanning section [CCD] Lens Scanning control section [SLG] Image processing/ writing control section [LGC] Laser control section [LDR] Semiconductive laser element Photoconductive drum Fig.
Image of an original placed on the original glass is scanned by the optical system. The CCD (Charge Coupled Device) reads the optical image signals and converts them into the electrical signals. The electrical signals are amplified and undergo analog-to-digital conversion, then are changed into digital signals. Shading correction (correction of variance in CCD elements and the light source) is performed and the digital signal is output as an image signal from the scanning section.
7.2 Configuration The Fig. 7-201 shows the image processing section of this equipment.
7.3 SYS Board (PWA-F-SYS-350) 7.3.1 Features (1) The image processing section on the SYS board is controlled by the CPU on the SYS board.
7.3.2 Functions of image processing circuit The image processing section on the SYS board realizes the followings: (1) ACS (Auto Color Selection) This function determines whether the original to be scanned is colored or monochrome, based on the analysis of the R, G and B signals output from the CCD. (2) Color conversion (CMY image data processing) When functioning the copier, the RGB image data is converted to CMY image data. (When functioning the scanner, it is converted to RGB image data.
(c) Filtering This function is enabled by low-pass filter processing and high-pass filter processing. • Low-pass filter processing This processing removes image/electrical noise and decreases moire by performing averaging operation between the image signals of the targeted pixel and those of the neighboring pixels to enhance the reproducibility of original. Density of the targeted pixel position is X. Density of pixel positions at front and back of the targeted pixel are “a” and “b” respectively.
(5) Image memory editing This function performs editing such as enlargement/reduction, mirror imaging, etc., by using a line memory. Pixel data for one line in the primary scanning direction is stored in the line memory and the memory is renewed at each line. (a) Enlargement/Reduction Enlargment/Reduction is accomplished by using the line memory control function in the process of the image processing operation.
(8) Gamma correction This function corrects the input/output characteristics of the scanner/printer and adjusts the image signals so that the input/output characteristics would match with the copy mode.
(14) Pure black/Pure gray (Post Script) This function is to printout the text and graphics formed as black data with black toner only on the printer data, not using 4 color toner. The gray text/graphics are also printed out with black toner only. (15) Chroma adjustment (PCL5C) This function adjusts chromaticness of the printer data. (16) Brightness adjustment (PCL5C) This function adjusts brightness of the printer data.
7.4 LGC Board (PWA-F-LGC-350) 7.4.1 Features (1) The image processing ASIC on the LGC board is controlled by CPU mounted on the LGC board. (2) The image processing functions of the LGC board realizes the followings: • Smoothing processing • Image area control • Laser related control 7.4.
8. LASER OPTICAL UNIT 8.1 General Description The laser optical unit radiates the laser beam onto the photoconductive drum responding to the digital image signals transmitted from the scanner, printer controller, etc. to create the latent image. Image signal is converted into the light emission signal of the laser diode on the laser driving PC board, then radiated on the drum through the optical elements such as cylinder lenses, polygonal mirror and fθθ lens.
Slit glass (for outgoing laser beam) Mirror Cylinder lens SNS board LDR board fθ lens 2 Aperture 8 fθ lens 1 Polygonal motor Finite focus lens [Writing Section Overview] Fig.
8.2 Structure (1) Laser emission Unit This unit consists of the laser diode, finite focus lens, aperture and cylinder lens. a. Laser diode This laser diode features low droop, small laser variation and low threshold current. Aperture determines the shape of the laser beam at laser emission position of the primary scanning and secondary scanning. Laser diode radiates the laser beams responding to the laser emission control (ON/OFF) signals from the laser driving PC board.
(2) Polygonal motor unit This unit consists of the polygonal motor, (A) Drum polygonal mirror and polygonal mirror cover. a. Polygonal motor This motor rotates the polygonal mirror in high speed. The DC motor controls the rotation speed of the mirror motor as follows: During ready Laser light : 10,000.00 rpm During printing : 36,734.37 rpm (600dpi) : 37,322.12 rpm (B ) (FAX 15.4x16.0dot/mm) : 35,922.54 rpm 8 (FAX 16.0x15.4dot/mm) Drum b.
(3) fθθ lenses 1 and 2 These two lenses perform the following adjustment on the laser beams reflected by the polygonal mirror. Wider a. Uniform-velocity scanning Since the polygonal mirror is rotating at a uniform velocity, the laser beam reflected Narrower from the mirror scans over the drum surface at a uniform angular velocity; namely, the pitch between the dots on the drum is wider Drum at both ends than at the center of the scanning range.
(5) Laser driving PC board (LDR board) This control board has the following functions: a. APC control function (adjusts disparity of the laser intensity caused by temperature) b. Laser ON/OFF function (6) Slit glass Slit glass is located where the laser beams are output from the laser optical unit, and it protects the unit from dust.
8.3 Laser Diode The laser used in this equipment is a A1GaAs type semiconductive laser. It is generated in the singlehorizontal mode, and its wavelength is approx. 785 nm. This semiconductive laser outputs 10mW with standard DC power supply. Laser intensity is controlled by using the output from the PIN diode for monitoring light output in the semiconductive laser. The relation between the current and optical output of the semiconductive laser is as shown at right.
8.4 Laser Unit Cooling Fan The laser unit cooling fan is a propeller fan (80 x 80 mm). It cools down the polygonal motor and the Laser driving PC board. 8.5 Polygonal Motor (1) Drive circuit of the polygonal motor PD4 Buffer (IC7407) POMON DCCLK4 Gate array 8 POMCK LCA301-1 PI1 POMPL M/DC-POL PWA-F-LGC Fig. 8-501 (2) Control signal The polygonal motor is a DC motor which is PLL-controlled by clock signal. The signals from LGC board controls the polygonal motor.
8.6 Disassembly and Replacement [A] Laser optical unit (1) Take off the rear cover ( Chapter 2.5.1 [P]). (2) Take off the LGC board cover ( Chapter 2.5.2 [A]). (3) Disconnect 2 connectors and release the harness from the harness clamp. Connector Harness clamp Fig. 8-601 (4) Take off the left cover ( Chapter 2.5.1 [F]). (5) Remove 2 screw and take off the toner cover. 8 Toner cover Fig. 8-602 (6) Release the harness, loosen 2 screws and take Anti-vibration bracket off the anti-vibration bracket.
Notes: 1. Do not leave fingerprints or stain on the slit glass. 2. Laser optical unit is a precise apparatus. Handle the unit with extra care not to shock or vibrate it. 3. Do not disassemble the unit in the field since it is very sensitive to the dust and stain. 4. When installing the laser optical unit (installing the harnesses), take off the left rear cover first so that the harnesses will be easily seen and installed (View from (A)) ( (A) Fig. 8-605 Chapter 2.5.1 [G]).
9. DRIVE SYSTEM 9.1 General Description This chapter explains about each drive system of the main motor, transport motor and developer motor.
9.2 Main Motor 9.2.1 Construction The main motor drive unit consists of two parts: One part transmits the drive from the main motor to photoconductive drum and the transfer belt, and another part transmits the drive from the drum cleaner brush motor to the drum cleaner brush. The drive to the photoconductive drum is transmitted by the gear, timing belt and the coupling and the drive to the transfer belt is transmitted by the gear and timing belt. The main motor is a brushless DC motor.
9.2.2 Drive circuit of main motor 62385 PK0 MAMON PK1 MAMBK 7407 PK2 MAMCW PK3 MAMGA DCCLK1 MAMCK Gate array 9 MAMPL PWA-F-LGC Main Motor Fig. 9-202 9.2.
9.3 Transport Motor 9.3.1 Construction The transport motor drive unit transmits the drive from the transport motor to the fuser unit, 2nd transfer roller, registration roller, transport roller, feed roller, bypass feed roller and bridge unit (option) through the gears and clutches.
9.3.2 Drive circuit of transport motor The transport motor is a DC brushless motor. At color printing modes with thick paper or OHP film, the transport speed is lowered to 1/2, 1/3 or 1/4 depending on its mode for most effective fusing. The following is the block diagram of the transport motor. Gate array PJ5 7407 FDMCW PJ6 62385 FDMON PJ7 FDMGA 7407 DCCLK2 FDMCK 9 PI2 FDMPL PWA-F-LGC Feed Motor Fig.
9.4 Developer Motor 9.4.1 Construction The developer motor is a motor drives the following movements: (A) Lifting movement by rotating the lifting cam in the black developer unit (B) Rotational movement of magnet roller in the black developer unit (C) Rotational movement of toner supply auger in the color developer unit (D) Rotational movement of magnet roller in the color developer unit Each movement is performed by drive transmission from the developer motor through the gears and clutches.
9.4.2 Drive circuit of developer motor 62385 DVMON DVMCW 7407 DVMCK Gate array DVMPL PWA-F-LGC Developer Motor Fig. 9-402 (1) LGC board provides a signal to control the rotation of the developer motor. (DVMON: Developer motor ON signal) When signal from LGC board is the level "L", the developer motor stops. (2) DVMCW signal controls the rotational direction of the motor. The motor rotates forward (CCW) but does not rotate backward (CW) in actual movement.
9.5 Disassembly and Replacement Main motor [A] Developer motor drive unit (1) Take off the rear cover ( Chapter 2.5.1 [P]). (2) Take off the LGC board, SYS board and switching power supply with the whole case ( Chapter 2.5.2 [A] [C] [E]). (3) Remove 3 screws and take off the flywheel. Note: The main motor can be taken off by itself without removing the drive unit. (2 screws Flywheel and 1 connector) Fig. 9-501 (4) Remove 2 screws and take off the bracket. 9 Bracket Fig.
(A-1) Developer motor (1) Remove 2 screws and take off the developer motor. Developer motor Fig. 9-505 (A-2) Black developer lifting clutch (1) Remove 4 screws and take off the bracket. 9 Bracket Fig. 9-506 (2) Take off the black developer lifting clutch. Note: Place the stopper when installing the clutch. Clutch Fig.
(2) Remove the gear, E-ring and the clip of each Gear and clip clutch. Gear Gear and E-ring Fig. 9-509 (3) Disconnect 1 connector and take off the color Color developer toner supply clutch developer toner supply clutch. Clip A (4) Remove clip A and gear C. Remove 1 bushing and clip B. Disconnect 1 connector and take 9 off the color developer drive clutch. (5) Disconnect 1 connector and take off the black Gear C Color developer drive clutch Clip B Bushing developer drive clutch.
(8) Remove 2 screws and take off the bracket. Bracket Fig. 9-512 (9) Take off the fuser unit ( Chapter 16.7 [A]). (10) Remove 1 screw and take off the bracket. Bracket 9 Fig. 9-513 Setscrew (11) Loosen 1 setscrew, disconnect 1 connector and take off the registration clutch. (12) Remove 2 screws and take off the clutch fixing cover. Notes: 1. Make sure not to take off the fixing Registration clutch cover completely. Stand the fixing cover against the equipment being connected with the harness.
Setscrew (13) Loosen 1 setscrew, disconnect 1 connector and take off the upper transport clutch (high speed) with the gear. Note: Do not mix up the registration clutch and upper transport clutch (high speed) when installing. Upper transport clutch (High speed) Fig. 9-516 (14) Disconnect 2 connectors and remove 5 screws. Take off the transport motor drive unit. Connector 9 Transport motor drive unit Connector Fig. 9-517 (15) Remove 2 screws and take off the transport Bracket motor.
[C] Main motor drive unit (1) Take off the cleaner unit ( Chapter 11.7 [A]). (2) Take off the rear cover ( Chapter 2.5.1 [P]). (3) Take off the LGC board and the SYS board with the whole case ( Chapter 2.5.2 [A] [C]). (4) Remove 3 screws and take off the flywheel ( Chapter 9.5 [A]). (5) Take off IH control PC board with the whole cover ( Chapter 16.7 [M]). (6) Take off the ozone exhaust fan with the whole cover ( Chapter 11.7 [J]).
(11) Loosen 1 screw, shift the tension plate to the direction of the white arrow, and then fix it at the position where the belt tension is loosened. Tension plate Fig. 9-523 (12) Remove clip A (back side of the unit), gear A with the shaft and 2 bushings. Remove clip B (back side of the unit), gear B with the shaft, 2 Clip B bushings, and gear C between the metal plates 9 of the drive unit. Clip A Fig. 9-524 Gear B Gear C Gear A Clip B Fig.
(14) Remove 2 screws and take off the drum cleaner brush motor. Notes: 1. When reassembling the unit, make sure to follow the inverse procedure of disassembling. 2. Make sure to assemble the unit while all the belt tensions are loosened. Tense the Drum cleaner brush motor belts after reassembling. 3. Rotate the rotor section of the motor for several times by hand to shake down the Fig. 9-527 belt while the belt is tense. Then screw the belt tensioner.
9 e-STUDIO3511/4511 DRIVE SYSTEM 9 - 16 November 2003 © TOSHIBA TEC
10. PAPER FEEDING SYSTEM 10.1 General Descriptions This chapter explains how the system works to pick up paper from the drawer or bypass tray and transport it to the transfer unit. The paper feeding system mainly consists of the pickup roller, feed roller, separation roller, transport roller, registration roller, bypass paper sensor, empty sensor, paper stock sensor, feed sensor, registration sensor and drive system for these components. The transport motor drives the above rollers and sensors.
The followings are about sensors which detect paper size, availability of paper and position of the paper being transported to control ON/OFF of the rollers. (6) Bypass paper sensor This sensor detects if paper is set in the bypass tray. If it is, bypass feeding always comes before drawer feeding. (7) Empty sensor (Upper/Lower drawer) This is a transmissive-type sensor and detects the availability of paper in the drawer by using an actuator.
12 13 14 1 11 7 3 7 7 17 4 6 5 10 10 7 16 8 15 2 9 Paper Feeding Section Sectional View (Front side) Fig. 10-101 No. Name No.
(G31/G38) 20 (G33) (G20/G27) (G40/G34) (G24/G30) (G35) (G25/G21) (G34) (G28/G33) 18 21 (G33) (G33) (G35) 10 (G33) (G36/G33) 19 Paper Feeding Section Drive System (Rear side) Fig. 10-102 No.
10.2 Description of Operation 10.2.1 Operation of bypass pickup roller When the bypass pickup solenoid is turned ON, the plunger is pulled, and then the lever is rotated. The pickup arm is then brought down with its own weight. When the bypass pickup solenoid is turned OFF, the pickup arm is brought up by the spring force. The driving force transmitted through the bypass feed clutch is transmitted to the bypass feed roller through the shaft and then to the bypass pickup roller through the timing belt.
10.2.2 Operation of drawer pickup roller When the drawer is inserted, the protrusion at the rear side of the drawer moves up the lever (a) to the direction of A. The pickup roller and roller holder are then lowered by it's own weight. Insertion direction Lever (a) 10 A Pickup roller A Fig.
10.2.3 Separation of paper The separation roller in this equipment works to separate the sheets being fed. The separation roller unit consists of the feed roller, separation roller, spring joint, etc., as shown below. The feed roller is rotated by the feed clutch in the direction of the arrow ( ) at the same timing as the pickup roller rotation.
10.2.4 General operation [A] From power-ON to ready status (1) When the equipment is turned ON, the tray-up motor is activated and the upper drawer tray starts to rise. When the tray-up sensor is turned ON (L → H), the tray-up motor is turned OFF, and the tray is stopped. At this time, if the empty sensor is OFF (L), it is judged that there is no paper in the drawer. If the empty sensor is ON (H), there is paper in the drawer. The tray stops at raised position regardless of availability of paper.
[D] Drawer feeding (D-1) Lower drawer • The feed clutch and the transport clutch (high speed) are turned ON, and the pickup roller, feed roller and transport roller are rotated to start feeding paper. • Passing of the leading edge of the paper turns ON the lower drawer feed sensor, then the transport clutch (high speed) is turned OFF then back ON. • Passing of the leading edge of the paper turns ON the registration sensor and the paper is aligned by the registration roller.
10.3 Drive Circuit of Tray-up Motor Tray-up motor (TRY-MTR) : Driven by IC6 (upper/lower drawer) (LGC: TA8428) Block diagram of TA8428 Thermal shut-down overcurrent protection circuit Control logic 10 1 2 3 4 5 6 7 IN1 IN2 M(+) GND M(–) N.C. VCC TUP1A TUP2A Fig. 10-301 IN1 and IN2 are input terminals to receive the signals from the microcomputer. The control logic, based on the signals from the microcomputer, controls ON/OFF of the motor rotation direction.
10.4 Disassembly and Replacement [A] Bypass unit (A-1) Bypass unit (1) Take off the right front/rear hinge covers ( Chapter 2.5.1 [N] [O]). (2) Disconnect 1 connector, remove 1 screw of ground wire and release the harnesses from Connector the harness clamps (2 pcs.). Fig. 10-401 (3) Open the bypass feed tray. Remove 1 screw and take off the bypass feed front cover. 10 Fig. 10-402 (4) Remove 1 screw and take off the bypass feed rear cover. Fig. 10-403 (5) Remove 3 screws.
(A-2) Bypass tray slide guide width detection PC board (1) Release the harness from 1 harness clamp and disconnect 1 connector. (2) Remove 2 screws and take off the hinge unit. Fig. 10-405 (3) Detach the bypass tray from the protrusion at Fulcrum the fulcrum of the frame. 10 Bypass tray Fig. 10-406 (4) Remove 3 screws and release 4 latches. Latch Take off the upper cover of the bypass tray. Bypass tray upper cover Latch Fig. 10-407 (5) Remove 1 screw and the plate spring.
(7) Disconnect 1 connector and remove 1 screw. Take off the bypass tray slide guide width detection PC board. Bypass tray slide guide width detection PC board Connector Fig. 10-409 Pointer Note: When installing the bracket, make sure that the pointer of the bracket is positioned as shown in the right figure (the same point as it pointed before disassembling). 10 Fig. 10-410 (A-3) Bypass transport roller (1) Remove 1 E-ring. Slide the shaft and take off the bypass transport roller.
(2) Remove 1 clip and pull out the shaft in the direction of the white arrow. Then take off the bypass pickup roller. Bypass pickup roller Clip Fig. 10-413 (A-5) Bypass pickup solenoid (1) Remove 4 screws and take off the plate cover by lifting and sliding it to the direction of the Plate spring Plate cover white arrow. 10 Fig. 10-414 (2) Disconnect 1 connector and remove 1 spring. Then take off the bypass pickup solenoid. Bypass pickup solenoid Spring Connector Fig.
(A-7) Bypass feed roller (1) Remove 4 screws and take off the bypass feed unit. Bypass feed unit Fig. 10-417 (2) Remove 1 clip and take off the bypass feed Bypass feed roller Clip roller by sliding it. 10 Fig. 10-418 (A-8) Bypass separation roller (1) Remove 3 screws and take off the lower plate Lower plate cover cover. Fig. 10-419 (2) Take off the bypass separation roller. Note: Lubricate the bypass separation roller on Bypass separation roller every replacement.
(3) Remove the arbor, shaft and spring. Arbor Shaft Spring Bypass separation roller Fig. 10-421 (A-9) Bypass feed sensor (1) Remove 3 screws and take the lower plate Lower plate cover cover. 10 Fig. 10-422 (2) Disconnect 1 connector. Then release the latches and take off the bypass feed sensor. Bypass feed sensor Fig. 10-423 Stay [B] Lower drawer feed sensor/Side cover opening/closing switch (1) Take off the bypass unit ( (2) Take off the ADU ( Chapter 10.4 [A]). Chapter 17.5 [A]).
Guide (5) Remove 3 screws and take off the guide by sliding it to the rear side. Fig. 10-425 (6) Disconnect 1 connector and take off the lower drawer feed sensor. Side guide opening/ closing switch Lower drawer feed sensor (7) Disconnect 1 connector and take off the side cover opening/closing switch. 10 Fig. 10-426 [C] Upper drawer feed sensor/Registration sensor Knob Clip (1) Remove 1 clip and take off the knob. Fig. 10-427 (2) Remove 3 screws.
(3) Disconnect 1 connector and remove 1 screw. Upper drawer feed sensor Then take off the upper drawer feed sensor with the whole bracket. (4) Disconnect 1 connector and remove 1 screw. Then take off the registration sensor with the whole bracket. Registration sensor Fig. 10-429 [D] Registration roller (1) Take off the front right cover ( Chapter 2.5.1 [E]). (2) Take off the transport motor drive unit ( Chapter 9.5 [B]). 10 (3) Remove 1 clip and take off the knob.
[E] Drawer feeding unit (E-1) Drawer feeding unit (1) Remove the drawer. (2) Remove 1 screw and take off the drawer feeding unit while sliding it to the front side. Fig. 10-433 (E-2) Feed clutch Feed clutch (1) Disconnect 1 connector. (2) Remove 2 screws and take off the clutch bracket. (3) Loosen 1 setscrew. (4) Remove the feed clutch. 10 Fig. 10-434 Note: Attach the clutch to the shaft referring to the figure at right. 0.2-0.5mm Fig.
(2) Remove the lever from the holder and take off Lever the separation roller along with its shaft. (3) Take off the cover, arbor, clutch spring, and then the separation roller from the shaft. Note: When reassembling the pickup roller, feed roller and separation roller, pay attention to Holder Arbor Cover Clutch spring Separation roller Spring Shaft the followings: Arbor 1. Set the timing belt securely on the pulleys. Spring 2. Pay attention to the "lock" direction of the Fig.
(2) Remove the pulley, one-way clutch and 3 E-ring E-rings. Pulley One-way clutch E-ring Pickup roller Fig. 10-441 (E-5) Feed roller Clip Feed roller One-way clutch (1) Remove the clip and take off the feed roller in the direction of the arrow. 10 Fig. 10-442 (E-6)Drawer tray-up sensor and Drawer empty Drawer tray-up sensor Latch sensor (1) Disconnect the connector and release the latches, and then take off the drawer tray-up sensor.
[F] Tray drive unit (1) Take off the fuse PC board bracket Chapter 2.5.2 [H]). (2) Remove 2 screws and take off the bracket. Bracket Fig. 10-445 (3) Disconnect 1 connector, remove 4 screws and take off the tray drive unit. 10 Tray drive unit Fig. 10-446 Latch (4) Turn the tray drive unit. Release 6 latches and take off the cover. Note: When taking off the cover, be careful of the spring inside the tray drive unit which Latch pushes the cover. Latch Cover Latch Fig.
[G] Lower transport clutch (Low/High speed) (1) Take off the tray drive unit ( Chapter 10.4 [F]). (2) Remove 4 screws and take off the bracket. Bracket Fig. 10-449 (3) Remove 3 screws and 1 E-ring. Then take off Lower transport clutch (Low speed) the clutch fixing bracket. (4) Take off the lower transport clutch (low speed) (c) and the lower transport clutch (high speed). Notes: 1.
[I] Middle guide (1) Remove 2 screws and take off the 2nd transfer front guide. 2nd transfer front guide Fig. 10-453 Note: When installing the 2nd transfer front guide, push the 2nd transfer front guide upward and screw it at the position the guide is pushed to the transfer belt unit. 10 2nd transfer front guide Fig. 10-454 (2) Remove 2 screws and take off the middle guide.
11. DRUM RELATED SECTION 11.1 Construction This chapter explains about the drum, unit around the drum, image processing unit, their parts and control circuits.
11.2 Functions (1) Drum Drum is made of a cylindrical aluminum base coated with thin film of organic photoconductive substance. Photoconductive object becomes insulative (high electrical resistance) when it is not exposed to lights and becomes conductive (low electrical resistance) when it is exposed to lights. This object is called photoconductor.
(5) Discharge LED Discharge is a process to decrease or eliminate the static electricity on the drum surface. The electrical resistance of the photosensitive layer is decreased by the light, and the residual charge on the drum surface is neutralized and eliminated (cleaned). Electrical potential of the drum surface is fixed to a certain amount before the drum is charged.
11.3 Output Control Circuits of High-Voltage Transformer • Outputs adjustment value of the main charger, transfer charger, and developer biases in the NVRAM to the main processor. ↓ • Outputs control voltage data from the main processor to the D/A converter. ↓ • Analog conversion by the D/A converter. ↓ • Outputs control voltage Vc to the main charger grid bias, 1st transfer roller bias, 2nd transfer roller bias, color developer bias and black developer bias transformer.
11.4 Drum Temperature Detection Circuit (1) Purpose of the drum temperature detection circuit Since the photoconductive characteristic of the drum surface varies drastically depending on the surface temperature of the drum, this circuit detects the temperature of the drum surface to gain the charging potential according to the environment. (2) Configuration of the drum temperature detection circuit R9 CPU RTH AN7 VTEMP Temperature/ humidity sensor R8 R7 11 Fig.
11.5 Temperature/Humidity Sensor 11.5.1 General description This sensor measures the temperature and humidity inside the equipment. 11.5.2 Construction Temperature/humidity control circuit is configured as follows: V HUMI TEMP/HUMI + - MM74HC4053 AN1 CPU V TEMP + - ANSW R TH PB1 11 LGC board TEMP/HUMI-SNR Fig.
11.6 Charger Wire Cleaner 11.6.1 Operation This equipment includes an automatic cleaning function with a motor drive to automatically clean off the toner adhered on the main charger wire. The drive from charger wire cleaner motor is transmitted to the wire cleaner through the timing belt and the wire cleaner contacted by the main charger wire shuttles between the both ends of main charger wire. The waiting position (home position) of the wire cleaner is at the front side.
11.6.3 Drive circuit The circuit configuration is as shown below. ENVMT1-0 M Driver ENVMT2-0 CPU ENVSNR1-0 ASIC GA ENVSNR2-0 LGC board PWA-CCL Fig.
11.7 Disassembly and Replacement [A] Cleaner unit (1) Open the front cover. Take off the toner bag and black developer unit cover ( Chapter 2.5.1 [A], 12.8 (A-1)). (2) Remove 1 screw and take off the sensor cover. Sensor cover Fig. 11-701 (3) Remove 3 screws. 11 Fig. 11-702 (4) Loosen 2 screws. Fig. 11-703 (5) Rotate the lever counterclockwise to screw it again. Lever Fig.
Washer (6) Disconnect 2 connectors. Remove 3 screws and washer and pull out the cleaner unit. Cleaner unit Fig. 11-705 Notes: 1. When pulling out the drum cleaner unit, pull out straightly without leaning. 2. When pulling out the drum cleaner, check whether color developer is taking the regular position (the position where color toner cartridge can be pulled out from the front) or not. If it is not taking the regular 11 position, rotate the revolver unit to the regular position. 3.
[B] Main charger unit (B-1) Main charger unit (1) Take off the cleaner unit ( 2 Chapter 11.7 [A]). (2) Rotate the gear counterclockwise for more than Gear 1 turn. (3) Release the latches and take off the main charger unit. 1 2 Notes: 1. At this time, be careful not to touch the Main charger unit drum surface or damage the drum. Fig. 11-708 2.
(B-3) Charger wire * Length: 373 mm, tungsten wire diameter 0.06 mm (1) Take off the terminal covers of the front and rear sides. Fig. 11-711 (2) Remove the terminal, detach the spring and Spring take off the wire. Wire Terminal Notes: Be careful of the followings when attaching the wire. 1. Securely insert the wire into the Vgrooves of the front and rear sides. 2. Do not twist the wire. 11 3. Do not touch the wire directly with bare hands. Fig.
(4) Remove the base. Note: Reinstall the base at the same position on the belt as before removing. It is recommend- Base able to leave the mark on the belt in advance. Fig. 11-715 [C] Drum (1) Take off the cleaner unit ( Chapter 11.7 [A]). Bracket (2) Remove 3 screws and take off the bracket. 11 Fig. 11-716 (3) Take off the drum upward by sliding it toward the front side. Notes: 1. Do not touch, scratch or spit on the drum surface. 2. Try to avoid direct sunlight to the drum.
[D] Cleaner (D-1) Drum cleaning blade (1) Take off the main charger unit and drum. ( Chapter 11.7 (B-1) [C]) (2) Remove 3 screws and the cleaning blade. Notes: 1. Do not touch or damage the edge of the Cleaning blade cleaning blade. 2. Check the color deviation after replacing the drum cleaning blade. Fig. 11-718 (D-2) Recovery blade Recovery blade (1) Remove the recovery blade. Notes: 1. To attach the recovery blade, clean the surface of the frame beforehand to make sure not to deform the blade. 2.
[E] Drum thermistor (1) Take off the drum ( Chapter 11.7 [C]). (2) Remove 1 screw and disconnect 1 connector, and then take off the drum thermistor with the whole bracket. Connector Fig. 11-722 (3) Remove 1 screw and take off the drum thermistor. 11 Fig. 11-723 [F] Discharge LED unit Discharge LED unit (F-1) Discharge LED (1) Take off the black developer unit and cleaner unit ( Chapters 12.8 [A] and 11.7 [A]). (2) Remove 2 screws and lift up the discharge LED unit.
(F-2) Charger cleaner motor (1) Take off the discharge LED unit ( Chapter 11.7 (F-1)). (2) Disconnect the joint connector of the charger cleaner motor. (3) Remove 1 screw and take off the charger cleaner motor unit. Fig. 11-726 (4) Remove 2 screws and take off the gear bracket Motor guide and motor guide. Gear bracket 11 Fig. 11-727 (5) Remove 2 screws and take out the charger cleaner motor from the motor bracket by rotating it upward. Fig.
(3) Release 2 latches and take off the front position switch arm. Front position switch arm (4) Remove 1 screw and take off the rear position switch arm. Rear position switch arm Fig. 11-730 (5) Disconnect 2 connectors and take off the charger cleaner front position detection switch and charger cleaner rear position detection switch. 11 Fig.
[H] Temperature/Humidity sensor (1) Take off the front cover, receiving tray and left cover ( Chapter 2.5.1 [A] [B] [F]). (2) Remove 2 screws and take off the inner cover. Inner cover Fig. 11-734 Temperature/ Humidity sensor (3) Disconnect 1 connector. Then release 2 latches and take off the temperature/humidity sensor. Latch 11 Fig. 11-735 [I] Ozone filter (1) Remove 1 screw and take off the cover. (2) Pull out the ozone filter. Ozone filter Fig.
(4) Release 3 latches and take off the cover. Latch Take off the ozone exhaust fan. FLOW Fig.
11 e-STUDIO3511/4511 DRUM RELATED SECTION 11 - 20 November 2003 © TOSHIBA TEC
12. DEVELOPER UNIT 12.1 General Description In this equipment, the three color developers (Y, M and C) are installed in the revolver unit and the black developer is installed independently separated from the revolver unit. This special structure ensures the improved printing productivity at the Black Mode. When developing color images (Y, M or C), the black developer unit escapes contacting with the drum.
12.3 Sectional View Mixer Color auto-toner sensor Drum Developer sleeve Color developer unit Developer sleeve Black developer unit Mixer Black auto-toner sensor 12 Fig.
12.4 Black Toner Cartridge Drive Unit 12.4.1 General descriptions The black toner cartridge is filled with black toner, and supplies the toner to the black developer unit by rotating the toner cartridge with the drive of the toner motor. The black toner cartridge detection switch ensures that the black toner cartridge is in rotation by detecting the protrusion of the toner cartridge.
12.5 Black Developer Unit 12.5.1 Functions a. Black developer material The developer material consists of the carrier and toner. The carrier is made of electrically conductive ferrites which is 30-100 µm and the toner is made of the resin particle which is 5-20 µm. Since the developer material deteriorates after a long time use, periodic replacements are needed. b. Mixer unit The carrier and toner are frictionized each other when the developer material is stirred.
12.5.2 Black developer unit drive section The black developer motor drives the black developer unit. Connection and disconnection of the developer motor drive is made by ON/OFF of the black developer drive clutch. The drive is connected when it is ON and disconnected when it is OFF. Developer sleeve Doctor blade Mixer-1 Mixer-2 Fig. 12-501 12 Gear (G21) Gear (G20) Gear (G19) Gear (G19) Gear (G20) Fig.
12.5.3 Black auto-toner sensor circuit (1) Functions of auto-toner circuit • Detection of the toner density in the developer material - density lowered → toner supplied • Detection of the toner being empty in the toner cartridge Black auto-toner sensor CPU LCA301-1 D/A converter 7407 DICH1 LDCH1 CLKCH1 ATS + - AN2 + - ATSVR 12 PA1 ATSDET Fig.
(2) Functions of the black auto-toner sensor a. Initializing function: When unpacking and replacing the developer material The automatic adjustment is made so that the output of the auto-toner sensor (input value of the main CPU) will be 2.45V to 2.55V for the toner density of new developer material. b. Toner density stabilizing function: During the printing operation Through the following phases, the toner density is kept constant. Toner is consumed. → Toner density decreases.
When the toner density is low: Toner ratio to the carrier in the developer material decreases. → Magnetic resistance decreases. → Detection output increases. → Auto-toner output VATS increases. When the toner density is high: Toner ratio to the carrier in the developer material increases. → Magnetic resistance increases. → Detection output decreases. → Auto-toner output VATS decreases.
12.5.4 Black developer unit lifting mechanism (1) General descriptions In the black developer unit, the drive from the developer motor is transmitted to cam with the black developer lifting clutch and this promotes the lifting movement of the black developer unit to contact or release against the photoconductive drum. When developing color images, (Y, M or C), the black developer unit escapes contact with the drum.
12.6 Color Developer Unit 12.6.1 Functions a. Color developer material The developer material consists of the carrier and toner. The carrier is made of electrically conductive ferrites which is 30-100 µm and the toner is made of the resin particle which is 5-20 µm. Since the developer material deteriorates after a long time use, periodic replacements are needed. b. Mixer unit The carrier and toner are frictionized each other when the developer material is stirred.
12.6.2 Color developer unit drive section The color developer motor drives the color developer unit. Connection and disconnection of the developer motor drive is made by ON/OFF of the color developer drive clutch. The drive is connected when it is ON and disconnected when it is OFF. The transmitted drive operates the mixers. Developer sleeve Doctor blade Mixer-R Mixer-F Fig. 12-601 Gear (G21) Coupling (G20) Gear (G19) Gear (G18) Gear (G19/G27) Gear (G27) Fig.
12.6.3 Color auto-toner sensor circuit (1) General descriptions The color auto-toner sensor detects the toner amount on the color developer sleeve with the reflection-type photosensor, differing from the black auto-toner sensor. Light-receiving elements of diffuse reflection in this sensor detect the toner amount on the sleeves with the light amount reflected from the sleeve surface. It detects the toner amount at the first forward position from the developing position.
(2) Functions of the color auto-toner sensor a. Initializing function: When unpacking or replacing developer material This sensor automatically adjusts the light amount of sensor to make the detected value of toner density of new developer material by auto-toner sensor equal to the fixed value. Also, the detected value by the reference plate is stored in memory after this adjustment. b.
When the toner density is low: Toner ratio to the carrier in the developer material decreases. → The light reflection amount decreases. → Detection output (voltage) decreases. When the toner density is high: Toner ratio to the carrier in the developer material increases. → The light reflection amount increases. → Detection output (voltage) increases. 12.6.4 Color toner supply 1. The color developer unit whose toner needs to be supplied moves to the developing position. 2.
12.7 High-Voltage Transformer Output Control Circuit Developer bias is supplied from high-voltage power supply to the developer sleeve and the toner image on the developer sleeve is transferred onto the photoconductive drum. A color developer bias and a black developer bias are output separately. Each developer bias consists of DC and AC which has an independent ON/OFF control.
12.8 Disassembly and Replacement Black developer unit cover [A] Black developer unit (A-1) Black developer unit (1) Open the front cover and take out the toner bag ( Chapter 2.5.1 [A]). (2) Turn the black developer unit lifting lever to the position where a clock hand could be at 9 Black developer unit lifting lever o’clock. Remove 2 screws and take off the black developer unit cover. Fig. 12-801 (3) Disconnect 2 connectors and remove 1 screw.
(4) Pour the developer material. Fig. 12-805 Note: When installing the upper cover, make sure Urethan seal the urethan seal is covered by the upper cover. Upper cover Fig. 12-806 (A-3) Auto-toner sensor (1) Discharge the developer material ( Chapter Auto-toner sensor 12.8 (A-2)). (2) Disconnect 1 connector, remove 1 screw and take off the auto-toner sensor. Fig. 12-807 (A-4) Doctor blade (1) Discharge the developer material ( Chapter 12.8 (A-2)).
(3) Remove 2 screws and take off the doctor blade. Doctor blade Fig. 12-809 (A-5) Developer sleeve (1) Discharge the developer material ( Chapter Front cover 12.8 (A-2)). (2) Take off the right cover ( Chapter 12.8 (A-4)). (3) Remove 3 screws. Disconnect 1 connector and take off the front cover. 12 Fig. 12-810 (4) Remove 1 screw and take off the polarity Bracket adjustment plate. Note: Before disassembling, record (mark if any) the scale pointed by the polarity adjustment lever.
(7) Front side: Remove the following parts installed on the shaft of the developer sleeve in order: Bushing, collar, roller, bearing-1, E-ring, bearing-2 and oil seal. * Procedure for replacing an oil seal: Page 12-23 Fig. 12-813 (8) Rear side: Remove the following parts installed Developer sleeve on the shaft of the developer sleeve in order: E-ring, bushing, collar, roller, bearing-1, E-ring, gear, pin, bearing-2 and oil seal. (9) Take off the developer sleeve.
(5) Take off the mixer from the hole of front side. Mixer Fig. 12-817 [B] Color developer unit (B-1) Developer material (1) Remove 2 screws, release 5 hooks and take off the toner holder by rotating it. Notes: 1. Do not try to release the hooks forcibly. 12 Fig. 12-818 2. When installing the toner holder, rotate the holder with hooking the magnet roller side of it. Fig. 12-819 3. When installing the toner holder, be careful not to peel the seal. Fig.
(2) Discharge the developer material. Fig. 12-821 (3) Pour the developer material. 12 Fig. 12-822 (B-2) Doctor blade Urethan seal (1) Discharge the developer material ( Chapter 12.8 (B-1)). (2) Remove the urethan seal. (3) Remove 2 screws and take off the doctor blade. Doctor blade Fig. 12-823 (B-3) Developer sleeve (1) Discharge the developer material ( Chapter 12.8 (B-1)). (2) Remove the urethan seal ( Chapter 12.8 (B-2)).
(4) Remove the following parts installed on the shaft of the developer sleeve in order: C-ring, bearing-1, C-ring, E-ring, bearing-2 and oil seal. * Procedure for replacing an oil seal: Page 12-23 Fig. 12-825 (5) Rear side: Remove 1 screw and take off the gear assembly. Gear assembly 12 Fig. 12-826 (6) Remove the following parts installed on the Developer sleeve shaft of the developer sleeve in order: E-ring, bearing, gear, bearing and oil seal. (7) Take off the developer sleeve.
(4) Rear side: Remove the following parts in order: Gear E-ring, gear, bearing or bushing, and oil seal. * Procedure for replacing an oil seal: Page 12-23 E-ring Fig. 12-829 (5) Take off the mixer from the hole of front side. Mixer 12 Fig. 12-830 <> 1. Take off the oil seal by hooking out its inside Inside Outside with a fine screwdriver and such. 2.
[C] Black developer lifting unit (1) Take off the black developer toner supply unit ( Spring Chapter 11.7 [K]). (2) Remove the harnesses from 5 harness clamps. Disconnect 3 connectors and remove 2 screws and 2 springs. Take off the black developer lifting unit. Note: The springs on both front and rear sides differ in the active coils (length of spring). When installing, pay attention to its active coils Spring Fig. 12-832 (length of spring).
[D] Black toner supply unit (1) Take off the laser optical unit ( Chapter 8.6 [A]). (2) Take off the transfer belt unit ( Chapter 14.7 [A]). (3) Take off the front cover ( Chapter 2.5.1 [A]). (4) Take off the toner bag ( Chapter 2.5.1 [A]). (5) Take off the black developer unit ( Switch bracket Chapter 12.8 [A]). (6) Take off the cleaner unit ( Fig. 18-835 Chapter 11.7 [A]). (7) Take off the discharge LED unit ( Chapter 11.7 [F]). (8) Take off the front lower cover ( Chapter 2.5.1 [D]).
(13) Take off the black toner cartridge. Toner case Hook (14) Remove 2 screws, release the harness from the hook and pull out the toner case by rotating it a little. Harness Fig. 12-838 (15) Remove 2 screws. Toner supply unit 12 Fig. 12-839 (16) Disconnect 2 connectors and take off the toner supply unit by lifting up and pulling out toward you to release it from the catch. Connector Fig. 12-840 (17) Remove 1 screw and disconnect 1 connector Black toner cartridge switch from the bracket.
(18) Remove 2 screws and take off the toner motor. Toner motor Fig. 12-842 Cleaner rail stay [E] Black toner supply auger unit (1) Take off the black toner supply unit ( Chapter 11.7 [K]). (2) Take off the black developer lifting unit ( Chapter 12.8 [C]). (3) Remove 1 screw and take off the cleaner rail stay. 12 Fig. 12-843 (4) Remove 2 screws and take off the black toner Black toner supply auger unit supply auger unit. Fig.
12 e-STUDIO3511/4511 DEVELOPER UNIT 12 - 28 November 2003 © TOSHIBA TEC
13. REVOLVER UNIT 13.1 General Description The revolver unit has three colors (yellow, magenta and cyan) of developer units and three colors of toner cartridges inside. The revolver rotates 120 degrees in a clockwise direction to move each color developer unit to the developing position, and thus color development is performed. At black development, the revolver rotates to move them to the escape position not to contact with the photoconductive drum. 13.
13.3 Functions (1) Revolver motor The revolver unit rotates with the drive of the revolver motor (two-phase stepping motor). The revolver home position sensor detects its home position. (2) Developer motor drive unit The developer motor drives the color developer unit and the toner supply auger in the revolver unit. This drive is connected and disconnected by the color developer unit drive clutch and the color toner supply clutch.
13.4 Drive of Revolver Unit The drive from the revolver motor is transmitted to the gear at the external layer of the revolver unit rear side. Then the revolver unit rotates clockwise. Revolver motor (G15) Revolver unit (G135) Revolver home position sensor Fig.
13.5 Revolver Motor Drive Circuit 13.5.1 Revolver motor The revolver motor (two-phase stepping motor) drives over the DRV board circuit. 24V FET RVMA-0 PG00 RVMA SDK03M RVMB-0 RVMC PG01 CPU RVMC-0 FET PG02 RVMD-0 FET PG03 RVMB SDK03M RVMD PD1 LCA301 FET 2SK2466 x 4 PD2 Revolver Motor PD3 PWA-F-LGC 13 PWA-DRV Fig.
13.6 Operation 13.6.1 Home position detection The revolver unit detects its home position at every warming-up after the power is turned ON or the front cover is opened/closed since this unit is driven by the stepping motor. The home position is the point where the revolver home position sensor detects the shielded part in the revolver unit. 13.6.
13.6.5 Color toner supply 1. The color developer unit whose toner needs to be supplied moves to the developing position. 2. The developer unit is driven and the toner is supplied for a regulated period of time. 3. The drive is stopped and the unit moves to the color toner density detection position to detect the density. 4. When the toner density detected is higher than the regulated value, it moves to the escape position.
13.7 Disassembly and Replacement [A] Color toner cartridge (1) Rotate the revolver to the toner cartridge replacement position. Note: Perform the Test Mode (03) on the control panel. Yellow toner cartridge moves to the replacement position: 03-452 Magenta toner cartridge moves to the replacement position: 03-453 Fig. 13-701 Cyan toner cartridge moves to the replacement position: 03-454 (2) Open the front cover. Take off the color toner cartridge while pressing the knob.
(4) Loosen 2 screws on each holder and take off 2 holders. (5) Pull out and take off the color developer unit. If the other color developer units still need to be replaced, repeat the procedure (3) to (5). When rotate the revolver unit manually, push down the revolver lock lever and rotate it a little in the direction of white arrow, and then follow the procedure “a”. Note: When installing the color developer unit, pay attention to the direction of the holder. [REAR] [FRONT] [REAR] [FRONT] Fig.
(3) Remove 1 screw and take off the color toner cartridge sensor. Fig. 13-706 Color auto-toner sensor unit [E] Color auto-toner sensor / Color auto-toner sensor shutter solenoid (1) Take off the receiving tray ( Chapter 2.5.1 [B]). (2) Disconnect 1 connector and remove 3 screws. Then take off the color auto-toner sensor unit. Connector Fig. 13-707 (3) Remove 2 screws, disconnect 1 connector and take off the color auto-toner sensor shutter solenoid.
(5) Remove 1 E-ring and shaft and take off the color auto-toner sensor case. Shaft Color auto-toner sensor case E-ring Fig. 13-710 (6) Remove 2 screws and take off the color autotoner sensor. Color auto-toner sensor Fig. 13-711 13 [F] Revolver home position sensor (1) Disconnect 1 connector and remove 1 screw. Revolver home position sensor Then take off the revolver home position sensor with the whole bracket. Fig.
Notes: 1. When installing, insert the shaft of the holder into the revolver unit securely. 2. Apply the grease to the shaft after the Grease replacement of the gears. Grease Fig. 13-714 [H] Revolver unit (1) Take off all of the color developer units ( Chapter 13.7 [B]). (2) Take off the cleaner unit ( Chapter 11.7 [A]). Note: When taking off the cleaner, make sure that all the color developer units are taken off in advance.
(12) Remove 2 screws and take off the laser cooling duct cover (front side). Fig. 13-716 (13) Take off the developer motor drive unit ( Chapter 9.5 [A]). (14) Remove 1 screw and take off the lock lever. 13 Lock lever Fig. 13-717 (15) Remove 5 screws and the stay. (Remove 1 of Stay 5 screws from the rear side of the equipment.) Fig.
(16) Remove 5 screws and take off the bracket. Bracket Fig. 13-719 (17) Remove the stopper attached on the front side of the revolver rotary shaft. (18) Push in the bearing to the inside of the frame and take it off from the frame. Fig. 13-720 (19) Slide the revolver to the front and take off the 13 bearing attached on the rear side of revolver rotary shaft from the rear frame. Take off the revolver unit with the bearing. Fig. 13-721 Note: Do not unscrew the red painted screws (6 pcs.
[I] Internal cooling fan (1) Take off the receiving tray ( Chapter 2.5.1 [B]). (2) Disconnect 1 connector and remove 2 screws. Then take off the internal cooling fan together with the duct. Fig. 13-723 (3) Disconnect 1 connector and remove 2 screws. Then take off the internal cooling fan. Fig.
14. TRANSFER UNIT 14.1 General Descriptions The transfer unit transfers the toner image formed on the photoconductive drum to the transfer belt, and then transfers it to the paper. The transfer of the toner image from the photoconductive drum to the transfer belt is called 1st transfer and the transfer from the transfer belt to the paper is called 2nd transfer. To reproduce a color image, maximum four color images are overlaid on the transfer belt and the overlaid image is then transferred to the paper.
14.3 Functions (1) Transfer belt The transfer belt is made by forming resin which has an electrical resistance with high precision. The main motor drive rotates the transfer belt drive roller and that makes to rotate the transfer belt as well. (2) 1st transfer roller When the 1st transfer bias from high-voltage power supply is applied, the toner is transferred from photoconductive drum to the transfer belt. The spring presses to contact the transfer belt with the photoconductive drum.
(12) 2nd transfer roller contact clutch This clutch is an electromagnetic clutch which contacts or releases the 2nd transfer roller to the transfer belt. The 2nd transfer roller contacts when this clutch turns ON and releases when it turns OFF. Since the transport motor is its drive source, the clutch needs to be ON as long as they are contacting. It also controls the clutch not to turn more than 180 degrees by the spring and stopper.
14.4 Outline of 1st transfer (1) The transfer belt contacts with the photoconductive drum. Power voltage is applied through the 1st transfer roller and it transfers the toner onto the transfer belt. (2) The transfer belt home position sensor-2 detects its home position and overlays four color images. (3) When the transfer of the toner image from the transfer belt to the paper is completed in 2nd transfer, residual toner on the transfer belt is scraped off by the transfer belt cleaning blade. 14.
14.6 High-Voltage Power Supply High-voltage power supply outputs the voltage of positive/negative polarity. When the voltage of positive polarity is supplied to the 2nd transfer roller, the toner will be supplied from the intermediary belt to the paper. When the voltage of negative polarity is supplied to the 2nd transfer roller, the toner on the 2nd transfer roller is transferred to the transfer belt reversely.
14.7 Disassembly and Replacement [A] Transfer belt unit 1 Note: Wearing gloves is recommended to avoid 2 direct touch by bare hands to the transfer belt surface. (1) Take off the drum cleaner unit ( Chapter 11.7 [A]). (2) Take off the receiving tray ( Chapter 2.5.1 [B]). (3) Take off the tray back cover ( Fig. 14-701 Chapter 2.5.1 [C]). (4) Unlock the fixing lever on the rear side by rotating it. (5) Unlock the fixing lever on the front side by sliding it.
(8) Loosen 3 screws and take off the bracket. Bracket Fig. 14-704 (9) Lift up the transfer belt cleaning unit and move it out to the front side temporarily. Then place the unit on the rear frame and front frame. Transfer belt cleaning unit Fig. 14-705 (10) Pull out the transfer belt unit. Notes: 1. When installing or taking off the transfer belt unit, be careful not to scratch the 14 transfer belt. 2. Do not touch the transfer belt surface with bare hands. Transfer belt unit Fig. 14-706 3.
4. If the transfer belt drive gear is not properly engaged, the hole positions of the fixing screw (as shown in the figure at right) may not match. In this case, operate the main motor for approx. 1 second in the Test Mode (03-101) to engage the drive gear securely and then install the unit. Fig. 14-708 [B] Transfer belt Note: Wearing gloves is recommended to avoid direct touch by bare hands to the transfer belt surface. (1) Take off the transfer belt unit ( Chapter 14.7 [A]).
(4) Remove 2 screws and take off the bracket. Fig. 14-711 (5) Install the stand plate (short) on the rear side of the transfer belt unit using the screw which is removed in step (3). Stand plate (short) Fig. 14-712 (6) Stand the transfer belt unit with its rear side on the bottom. (7) Remove 3 screws and the stay. 14 Stay Fig. 14-713 (8) Install the stand plate (long) on the front side of Stand plate (long) the transfer belt unit using the screw which is removed in step (7). Fig.
(9) Stand the transfer belt unit with its front side on the bottom. (10) Remove 3 screws. (11) Incline the transfer belt unit so that the shaft is pulled in the unit. Then remove the stay Shaft while the shaft is hidden in the unit. Stay Fig. 14-715 (12) Narrow the distance of rollers and pull out the transfer belt unit. Notes: 1. When installing the transfer belt, make 1 sure it is set at the center not to be moved aside. 2.
[D] Transfer belt home position sensor-1 (1) Take off the transfer belt ( Chapter 14.7 [B]). (2) Remove 1 screw and take off the cover. Cover Fig. 14-718 (3) Remove 1 screw and disconnect 1 connector. Then take off the transfer belt home position sensor-1. Connector Transfer belt home position sensor-1 Fig. 14-719 [E] Transfer belt home position sensor-2 (1) Take off the transfer belt ( Cover Chapter 14.7 [B]). (2) Remove 1 screw and take off the cover. 14 Fig.
[F] Transfer belt cleaning unit (1) Take off the drum cleaner unit ( Chapter 11.6 [A]). Note: When installing the transfer belt cleaning unit, make sure to take off the drum cleaner unit in advance since it may scratch the drum. (2) Take off the transfer belt unit ( Chapter 14.7 Transfer belt cleaning unit [A]). Fig. 14-722 (3) Disconnect 2 connectors and take off the transfer belt cleaning unit. Note: Do not incline the transfer belt cleaning unit steeply since the toner may fall off.
(4) Remove 1 screw and take off the bracket on Bracket the front side. Fig. 14-725 (5) Remove 1 screw and take off the bracket on the rear side. Bracket Fig. 14-726 (6) Remove 2 springs. Note: When installing the transfer belt cleaning unit, after it’s completion, make sure the 14 springs do not come off. Fig. 14-727 (7) Separate the transfer belt cleaning unit into 2 parts. Fig.
(8) Remove 3 conductive tapes. Conductive tape Fig. 14-729 Note: When assembling, use the new conductive tape. Also, attach the conductive tape to the transfer belt cleaning blade referring to the 47 mm 160 mm figure on the right. 41 mm Fig. 14-730 (9) Remove 2 screws and take off the transfer belt cleaning blade. 14 Notes: 1. Make sure not to touch or damage the edge of the blade. 2. Check the color deviation after replacing the transfer belt cleaning blade. Cleaning blade Fig.
(4) Remove the harness clamp. Remove 1 screw Harness clamp and take off the transfer belt cleaner auger motor with the whole bracket. Fig. 14-733 (5) Remove 2 screws and take off the transfer belt cleaner auger motor from the bracket. Transfer belt cleaner auger motor Fig. 14-734 (6) Remove 1 clip and take off 1 bushing. Then take off the assembly of the shaft and clutch. 14 Shaft Clutch Fig. 14-735 (7) Remove 1 clip.
Cover [I] 2nd transfer roller (1) Open the 2nd transfer unit. (2) Release 4 latches and take off the cover. Fig. 14-737 (3) Remove 1 clip. Take off the 2nd transfer roller Clip while pushing the shaft. 2nd transfer roller Fig. 14-738 (4) Remove each part from the 2nd transfer Clip roller in order. 14 Bearing Notes: 1. When assembling, pay attention to the Bushing-2 Collar-1 direction of the collar-2. Bushing-1 Bearing 2.
(5) Open the 2nd transfer unit. Disconnect 2 Ground wire Harness clamp connectors, then remove 1 screw and the ground wire. Remove 1 harness clamp. Connector Fig. 14-741 (6) Take off the 2nd transfer unit. 2nd transfer unit Fig. 14-742 [K] 2nd transfer roller contact clutch Transfer guide (1) Take off the 2nd transfer unit ( Chapter 14.7 [J]). 14 (2) Take off the 2nd transfer roller ( Ground wire Chapter 14.7 [I]). (3) Remove 4 screws.
(7) Remove 1 screw and the pin. (Front side) Pin (8) Remove 1 screw and the pin. (Rear side) Case (9) Disconnect 1 connector and take off the case. Pin Fig. 14-745 (10) Remove 1 clip and take off the 2nd transfer roller contact clutch. Clip 2nd transfer roller contact clutch Fig. 14-746 2nd transfer roller position detection sensor [L] 2nd transfer roller position detection sensor (1) Take off the 2nd transfer unit 14 ( Chapter 14.7 [J]). (2) Take off the case ( Chapter 14.7 [K]).
(4) Remove 1 screw. Then take off the paper clinging detection sensor from the bracket. Paper clinging detection sensor Bracket Fig.
14 e-STUDIO3511/4511 TRANSFER/TRANSPORT UNIT 14 - 20 November 2003 © TOSHIBA TEC
15. IMAGE QUALITY CONTROL 15.1 General Description In this equipment, image quality is controlled by the image quality sensor. At this control, image forming conditions are automatically adjusted so as to minimize the change in the image density or tone reproduction caused by the fluctuation of working environment or life of supply items. At first, the image quality sensor operates to output reflected light amount voltage when no toner image is formed on the transfer belt.
15.3 Flow Chart of Control Procedure Start of control procedure (when meeting the image quality control starting conditions such as power-ON) [1] The surface potential of photoconductive drum is estimated with the drum thermistor and temperature/humidity sensor. → [2] Reference image forming conditions are set. → [3] The sensor light source is adjusted. → [4] The test pattern is formed on the transfer belt. → Return to [4]. [5] Toner adhesion amount of test pattern (high density) is calculated.
15.4 Construction · Image quality sensor: Projects the amount of light on the transfer belt and outputs the voltage corresponding to the reflected light amount from the transfer belt or the toner image on the transfer belt. · D/A converter: Converts light source amount signal into the voltage to the sensor. · Laser optical system: Performs test pattern exposure (for toner image formation). · A/D converter: Converts the output voltage from the sensor into digital values and outputs them to the CPU.
15.5 Disassembly and Replacement Connector [A] Image quality sensor / Image quality sensor Image quality sensor assembly shutter solenoid (1) Take off the fuser unit ( Chapter 16.7 [A]). Take off the transfer belt unit ( Chapter 14.7 [A]). (2) Open the 2nd transfer cover. Remove 2 screws and disconnect 2 connectors. Take off the image quality sensor assembly. Note: Insert latches of sensor case to the hole of Fig. 15-501 the plate securely when installing.
16. FUSER UNIT / PAPER EXIT SECTION 16.1 General Description Toner is fused by applying heat and pressure on the transferred image on the paper which is transported to the fuser unit. The paper is then transported to the receiving tray, paper exiting options or ADU. The fuser unit consists of the IH coil, fuser roller, pressure roller, fuser belt, separation roller, separation fingers, separation plate, cleaning roller, oil roller, thermistors, thermostat, exit roller, exit sensor, etc.
16.3 Functions (1) IH coil (IH: Induction Heating) The IH coil is inside the fuser roller and applies the induction heating to the fuser roller. This IH coil is divided into two parts; the main IH coil heating the center of the fuser roller and the sub IH coil heating both ends of the fuser roller. Each part turns ON/OFF individually controlling the balance of electric supply so that the fuser roller can be kept at a certain temperature without wasting electric power on any paper size.
(8) Cleaning roller / Oil roller Silicone oil is contained inside of the oil roller to supply a proper amount of oil to the fuser belt, and this enables to remove the residual toner and paper dust (preventing offsetting phenomenon). Also, the cleaning roller is a fluorinated aluminum roller which removes the residual toner and paper dust adhered on the oil roller.
16 e-STUDIO3511/4511 FUSER UNIT/PAPER EXIT SECTION 16 - 4 250˚C upper limit circuit Temperature control circuit 5V SW CPU Electric power setting Error signal IH1 ON signal IH2 ON signal Power supply for Photocoupler AC line DC line Coil AC input N Control circuit including CPU L IH Noise filter Fuse Fuser roller IH power source/ drive circuit Coil output Thermostat Main thermistor Photocoupler Sub thermistor [Block diagram of fuser unit and IH control circuit] LGC 5V SW Front edge
16.4.2 Heating principle of IH Heater The magnetic field is generated by applying a high frequency current to the IH coil inside the fuser roller, which then generates the eddy current in it. When the eddy current flows, the Joule heat is generated by the resistance element of the fuser roller, which is then heated. In the IH coil method, the thermal efficiency is higher than the lamp method because the fuser roller is directly heated.
16.4.3 IH control circuit interface The IH control circuit uses a photocoupler as an insulation against the secondary circuit. The interface signals are as follows. CN No.
16.4.4 Relation between system configuration and IH output for NAD, SAD, TWD: System configuration Warming up (*2) Ready Equipment only Energy saving mode Automatically OFF 800W OFF Energy saving mode Automatically OFF 700W OFF Warming up time 1080W 1160-1300W Equipment and RADF Printing 1020W (*1) Equipment, RADF (*1) and FIN Equipment, RADF (*1), 1160-1260W 800W FIN, and HPU Equipment, RADF (*1) 960W Approx 40 sec.
16.4.5 Temperature detection section To maintain the stable temperature of the fuser belt, the thermistor detects the temperature and controls ON/OFF of the IH coil. Output from the thermistors is used to detect the abnormality. (1) Relation between the thermistor output voltage and surface temperature of the fuser belt: Output voltages of thermistors [V] Surface temperatures of fuser belt [oC] Approx. 0.30 40 Approx. 1.77 100 Approx. 3.28 150 Approx. 3.66 170 Approx. 3.81 180 Approx. 4.
(4) Temperature control at energy saving mode This equipment has the following two types of temperature control for saving energy and returns to ready status to perform printing in each mode upon printing request. The period of time from the printing request to this mode can be set in the Setting Mode (08) or by an from administrator.
(5) Thermistor/heater status counter control • To enhance the safety of the fusing section unit, CPU provides the following protection: When the third [C410] error has occurred after two consecutive [C410] errors, the IH coil is not turned ON and error [C410] is displayed immediately even if an operator turns OFF the power and back ON. However, if the equipment goes into a ready state normally with the thermistor/heater status counter “1” or below, the counter is cleared to “0”.
(6) Temperature detection configuration Thermistor is a device whose resistance decreases as it detects a higher temperature. Thus its input voltage to CPU changes and then CPU judges whether this change is normal or abnormal. If one of the fuser belt thermistors is broken, the control circuit judges that the fuser belt temperature is extremely low and keeps turning the IH coil ON. As a result, the fuser belt temperature rises, and possibly activates the thermostat which is a safety protection device.
(7) Abnormality detection by the thermistors The following table shows the conditions judging the fuser belt temperature abnormality and detecting timing.
16.4.6 Abnormality in the IH control circuit When an abnormality is detected in the IH control circuit, it stops the power supply to the IH coil and displays a message “Call for service”. (1) IH control circuit CPU output level of the IH control circuit changes depending on the condition of IH coil. This output level goes through the photocoupler into the gate array. IH LGC VDD 5V SW Gate array PA3 PA4 H1ERR1 CPU H1ERR2 Fig.
(2) IH error Error content Checking timing Port input value H1ERR1 H1ERR2 Error code Power ON Initial abnormality L L C470 In warming up IH power voltage abnormality L L C470 Detecting 40°C IGBT high temperature abnormality / L H C480 IH circuit/coil abnormality H H C490 In warming up IH power voltage abnormality L L C470 Detecting 40°C IGBT high temperature abnormality / During ready status Continuous energization (15 sec.
16.5 Control Circuit of Exit Motor The following is the control circuit of the exit motor. The exit motor is a stepping motor. The motor is turned ON/OFF and the direction of its rotation is switched by controlling the output timing of pulse signal (A0·A1·B0·B1). LGC DRV +5V EXTMA-0 PG10 EXTMC-0 PG11 CPU EXTMB-0 PG12 EXTMD-0 PG13 A A1 EXTMA B A0 EXTMC AB B1 EXTMB BB B0 EXTMD 5V SW Exit Motor PG0 VREF STK672 LCA301 PG1 PG2 Fig. 16-501 16.
16.7 Disassembly and Replacement [A] Fuser unit RED (S ) BLUE (C ) (1) Take off the IH terminal cover ( Chapter 2.5.1 [K]) (2) Disconnect 2 connectors and 4 faston terminals. Notes: 1. Make sure to hold the plastic part of the faston terminals when disconnecting them. 2. Make sure not to connect each terminal to the wrong position. WHITE WHITE Fig. 16-701 (3) Remove 2 screws and take off the fuser unit. Fig. 16-702 [B] Oil roller (1) Take off the fuser unit ( Chapter 16.7 [A]).
(4) Remove spring (B) on each end of the oil roller. - Front side - (5) Take off the oil roller. Spring (B) Oil roller - Rear side Fig. 16-705 (6) Remove 1 bushing from each side of the oil Bushing roller. Fig. 16-706 Note: Install the oil roller according to the marking on the frame (the shaft end with a groove should point at the rear side). 16 Groove Fig. 16-707 [C] Cleaning roller (1) Take off the oil roller from the cleaning unit ( Chapter 16.7 [B]).
(4) Remove 1 E-ring, the gear (C) and 1 bushing from the cleaning roller rear side. Bushing E-ring Gear (C) Fig. 16-709 [D] IH coil (1) Take off the fuser unit ( E-ring Chapter 16.7 [A]). (2) Release the harnesses from 5 harness clamps. Then remove 1 E-ring, 1 bushing and 2 screws. Bushing Fig. 16-710 (3) Pull out the bracket and IH coil. (4) Take out the IH coil from the bracket. IH coil Notes: 1. When installing, be sure to set the harnesses “C” and “S” of 4 harnesses on upper. 16 C 2.
(1) Remove the cleaning unit ( (2) Remove the IH coil ( Chapter 16.7 [B]). Chapter 16.7 [D]). (3) Push down the pressure releasing levers on both sides. (4) Remove 1 C-ring and 2 gears. Pressure releasing C-ring lever Gear Fig. 16-713 (5) Remove 1 bearing. Bearing Fig. 16-714 (6) Insert a flat-head screwdriver into the slit of the fuser belt guide on the rear side. Then slide the plate while opening the slit by the flat-head screwdriver. Take off the fuser belt guide from the fuser roller.
(8) Take off the fuser roller. (9) Remove 1 C-ring, 1 bearing and 1 fuser belt guide from the fuser roller front side. Note: When installing, make sure that the fuser belt Ring guide securely fits in the fuser roller groove. Also, make sure that the ring on the fuser Fuser roller belt guide securely fits in the groove on the Fuser belt guide belt restricting plate. C-ring Bearing Fig. 16-717 [F] Fuser belt (1) Take off the fuser roller ( Fuser belt unit Chapter 16.7 [E]).
(5) Remove 1 E-ring. Then remove 1 bearing. E-ring Bearing Fig. 16-721 (6) Lift up the separation roller by sliding it. Fuser belt (7) Take off the fuser belt. Separation plate Separation roller Fig. 16-722 Note: When installing the fuser belt, place a sheet of paper between the separation plate and fuser belt in order to prevent the fuser belt Fuser belt Paper from being scratched by the separation plate. Keep the paper between then until the fuser roller is installed. Separation plate Fig.
(3) Confirm that the pressure releasing levers on both sides are up. Then loosen each 1 screw on both front and rear sides. - Front side - - Rear side - Fig. 16-725 (4) Remove 2 springs. Spring Fig. 16-726 (5) Remove 2 screws and take off the separation finger unit. 16 Separation finger unit Fig. 16-727 (6) Remove the spring of each separation finger. Separation finger Spring Fig.
[H] Pressure roller (1) Take off the fuser belt unit ( Chapter 16.7 [F]). (2) Take off the separation finger unit ( Chapter 16.7 [G]). (3) Take off the pressure roller. Pressure roller Fig. 16-729 (4) Remove each 1 ring, 1 bearing and 1 bushing Pressure roller on both front and rear sides of the pressure roller. Bushing Bearing Ring Fig. 16-730 [I] Thermostat (1) Take off the fuser unit ( Cleaning unit Chapter 16.7 [A]). (2) Remove 2 screws. Lift up the cleaning unit and take it off.
(5) Remove 2 screws and take off the thermostat from the bracket. Thermostat Bracket Fig. 16-733 Notes: When installing, pay attention to the 0.7-2.0mm followings: 1. Make sure to fix the thermostat, and then harness terminal in order on the bracket. 2. Make sure to keep the gap between the fuser roller and thermostat is 0.7 mm to 2.0 mm while the fuser roller is pressed to the pressure roller. Fig. 16-734 [J] Thermistor (1) Take off the fuser unit ( Chapter 16.7 [A]).
(4) Remove each 1 screw and take off the thermistor from each bracket. Note: When installing, be careful not to deform the thermistor or the frame (plate). Also, make sure that the thermistor is in touch with the fuser belt. Fig. 16-737 [K] Exit sensor / Exit finger / Transport guide (1) Take off the fuser unit ( Cover (A) Chapter 16.7 [A]). (2) Open the jam access cover and transport guide. (3) Remove 3 screws and take off the cover (A). Fig. 16-738 (4) Remove 1 screw and plate spring.
(8) Remove 1 screw. 3 (9) Enlarge the frame and take off the transport guide. 2 1 Fig. 16-741 [L] Exit roller (1) Take off the fuser unit ( Exit roller cover Chapter 16.7 [A]). (Shoulder screw) (2) Open the jam access cover of the fuser unit. (3) Remove 2 screws (one of the front side is a shoulder screw) and take off the exit roller cover. Fig. 16-742 (4) Remove 1 E-ring and 1 bushing from the exit Bushing roller front side. Exit roller 16 E-ring Fig.
[M] IH control PC board (IH board) (1) Take off the SYS board case ( Chapter 2.5.2 [C]). (2) Take off the flywheel ( Chapter 9.5 [A]). (3) Take off the right rear cover ( Chapter 2.5.1 [L]). (4) Disconnect 2 connectors and 4 faston terminal ( Chapter 16.7 [A]). (5) Remove 3 screws and take off the IH board IH board cover Fig. 16-745 cover. (6) Disconnect 2 connectors, remove 2 screws and Connector take off the IH board case. Connector IH board case Fig.
(3) Disconnect 1 connector and take off the IH control board cooling fan. IH control board cooling fan FLOW Connector Fig. 16-749 [O] Scraper (1) Take off the fuser unit ( Chapter 16.7 [A]). (2) Remove 2 screws and take off the jam access cover. Fig. 16-750 (3) Remove 4 screws and take off the cover. 16 Fig. 16-751 (4) Remove 2 screws and take off the scraper. Notes: 1. Before installing or taking off the scraper, confirm that the pressure releasing levers are up. 2.
17. AUTOMATIC DUPLEXING UNIT (ADU) 17.1 General Description The Automatic Duplexing Unit (ADU) is a unit to automatically print on both sides of paper. A switchback method using the exit roller is adopted for the ADU of this equipment. A sheet of paper is switchbacked by the exit roller right after the printing operation (fusing operation) on one side is completed, and the reversed sheet is transported to the registration section for the other side of the sheet to be printed.
17.2 Description of Operations The back side printing (recording data of the back side of paper) is performed first by selecting duplex printing mode and pressing the [START] button. When the trailing edge of the paper passes the exit gate, the paper is switchbacked by the exit roller and transported into the ADU (the exit gate is closed with its own weight), and then the switchbacked paper is transported with acceleration. The transportation decelerates in front of the upper transport roller of the ADU.
(a) Single-paper circulation With the paper larger than A4/LT size, duplex printing (back-side printing → front-side printing) is performed for one sheet at a time as shown below. 2 1 2 2 (1) (2) 1 2 (3) 2 1 2 4 1 4 (4) (5) (6) 17 4 2 2 1 2 1 3 1 3 4 4 (7) (8) (9) Fig.
(b) Double-paper alternateness circulation With A4/LT size paper or smaller, duplex printing is performed for two sheets at a time as shown below. Back side of the 1st sheet → Back side of the 2nd sheet → Front side of the 1st sheet → Front side of the 2nd sheet 2 2 (1) (2) (3) 4 2 4 1 4 2 2 (4) 17 (5) (6) 4 2 2 1 3 1 3 4 (7) e-STUDIO3511/4511 AUTOMATIC DUPLEXING UNIT Fig.
(c) Multiple-paper circulation With more than one sheet of A4/LT size paper or smaller, duplex printing is performed as shown below in a following order: (In case of 5 sheets) Back side of the 1st sheet ( 2 ) → Back side of the 2nd sheet ( 4 ) → Front side of the 1st sheet ( 1 )→ Back side of the 3rd sheet ( 6 ) → Front side of the 2nd sheet ( 3 ) → Back side of the 4th sheet ( 8 )→ Front side of the 3rd sheet ( 5 ) → Back side of the 5th sheet ( 10 ) → Front side of the 4th sheet ( 7 )→
e-STUDIO3511/4511 AUTOMATIC DUPLEXING UNIT 17 - 6 ADU motor ADU clutch ADU exit sensor ADU entrance sensor ADU Registration clutch Registration sensor Exit sensor Equipment 0 4835 5950 5895 5810 5955 7430 8200 8340 9060 10575 9670 11055 11655 11985 14000 13235 13730 15390 14870 14870 14145 16070 16240 17270 15115 16175 14795 15030 13575 14470 13935 13850 13150 12875 11655 10170 11055 11985 9580 10900 10370 10635 11695 10005 9315 9060 8660 8135 11615 11905 1
November 2003 © TOSHIBA TEC 17 - 7 ADU motor ADU clutch ADU exit sensor ADU entrance sensor ADU Registration clutch Registration sensor Exit sensor Equipment 0 4915 6040 6990 6900 9405 10125 11510 10690 10690 12135 12135 12765 12660 11955 11240 10690 10050 8990 10185 8830 8510 8070 13840 (unit: msec) Timing chart for duplex copying from upper drawer (A3, 1 sheet) 17 e-STUDIO3511/4511 AUTOMATIC DUPLEXING UNIT
17.3 Drive of ADU When the ADU motor rotates to the direction A, the upper transport roller is rotated driven by the gears and belt. The ADU clutch is then turned ON and the middle transport roller and lower transport roller are rotated. Upper transport roller ADU motor A Middle transport roller ADU clutch 17 Lower transport roller Fig.
17.4 Flow Chart Exit motor reverse rotation ON Specified time has passed ADU motor ON No ADU entrance sensor ON? Yes ADU transport jam (E510) Specified time has passed (Paper is transported to the first stopping position in ADU) Trailing edge of first paper turned ON the ADU exit sensor? No Yes ADU motor ON ADU motor stopped ADU clutch ON 17 ADU exit sensor check the arrival No Yes ADU transport jam (E520) Specified time has passed A Fig.
A ADU paper feeding command signal received No Yes ADU motor stopped ADU clutch OFF ADU motor/clutch ON ADU feeding operation started Registration sensor ON? No Yes ADU misfeeding (E110) Registration in process Registration process completed ADU motor stopped ADU clutch OFF 17 Next paper is ready for the registration Fig.
18. POWER SUPPLY UNIT 18.1 Construction The power supply unit consists of an AC filter and insulation type DC output circuits. (1) AC filter Eliminates noise from the outside and prevents the noise generated by the equipment from leaking to the outside. (2) DC output circuits Converts AC voltage input from outside to DC voltage and supplies it to each electric part. The DC voltage is divided into the following two lines. a. Main line : Power supply used in the entire equipment during image forming process.
18.3 Output Channel The followings are four output channels which are not linked with the door switch. (1) +3.3V +3.3VA : CN464 Pins 13, 14, 15 and 16 Output to the SYS board +3.3VB : CN464 Pins 19 and 20 Output to the SYS board +3.3VB : CN466 Pin 3 Output to the LGC board +3.3VB : CN467 Pins 17 and 18 Output to the SLG board (2) +5.1V +5.1VA : CN464 Pins 24 and 26 Output to the SYS board +5.1VB : CN464 Pin 25 Output to the SYS board +5.
The followings are two output channels which are linked with the door switch. (1) +5.1V +5.
18.4 Fuse When the power supply secondary fuse is blown out, confirm that there is no abnormally with each part using the following table.
November 2003 © TOSHIBA TEC Neutral Live Breaker Noise filter 18 - 5 FUS board FIL board Main switch *ASD/AUD/CND models: Standard *MJD model: Option AC IN *NAD/SAD/TWD models: Standard AC MAIN AC DOOR Door switch CN460 CN460 F2 Switching power supply F1 IH Noise filter Noise filter Reg. Reg. F7 F6 F5 F4 F3 Power supply cooling fan +24VD1 CN470 CN464 CN464 CN468 CN469 +5.1VA +5.1VB +5.1VB +5.1VB SLG board, RADF SYS board +5.
18.6 Sequence of Power Supply OFF ON 700ms or lower AC input 0ms to 200ms 3.2V or higher +3.3VA (Linked with main switch) +5.1VA (Linked with main switch) 3.2V or higher 0ms to 10ms or 200ms lower 4.95V or higher 20ms or 10ms or higher higher 4.95V or higher 10ms to 120ms 20ms or 50ms or higher higher 0ms to 200ms 5ms or higher 5ms or higher PWR-DN Max. 20ms +12VA, -12VA (Linked with main switch) 11.4V or higher 11.
INLET (AC IN) J650 N A GND B L C 18 - 7 4 J495 SG 3 2 +5.1VB 1 AC(L) J493 AC(N) 4 3 2 AC(L) 1 J494 1 2 AC(N) 3 J655 F AC(L:MAIN) AC(N:MAIN) RY NF J656 4 3 AC(N) AC(L) NS-FILTER (NOISE FILTER) 2 1 2 2 3 3 1 1 PWA-F-FIL 4 5 6 J432 1 2 3 3 2 1 J433 SAD,TWD NAD,MODELS: STANDARD BREAKER G LOAD J653 J662 2 1 2 4 1 3 ) +5.1VB SG SG +5.
18 e-STUDIO3511/4511 POWER SUPPLY UNIT 18 - 8 November 2003 © TOSHIBA TEC
19.
(2) PWA-F-LGC 19 e-STUDIO3511/4511 PC BOARDS 19 - 2 November 2003 © TOSHIBA TEC
(3) PWA-F-SLG (4) PWA-F-CCD (5) PWA-F-SDV 19 November 2003 © TOSHIBA TEC 19 - 3 e-STUDIO3511/4511 PC BOARDS
(6) PWA-F-DRV (7) PWA-F-CCL 19 e-STUDIO3511/4511 PC BOARDS 19 - 4 November 2003 © TOSHIBA TEC
(8) PWA-F-LDR (9) PWA-F-SNS (10) PWA-F-ADU 19 November 2003 © TOSHIBA TEC 19 - 5 e-STUDIO3511/4511 PC BOARDS
(11) PWA-F-DSP (12) PWA-F-KEY 19 e-STUDIO3511/4511 PC BOARDS 19 - 6 November 2003 © TOSHIBA TEC
(13) PWA-F-FIL (* NAD/SAD/TWD models: Standard) (14) PWA-F-FUS (* ASD/AUD/CND models: Standard, MJD model: Option) 19 November 2003 © TOSHIBA TEC 19 - 7 e-STUDIO3511/4511 PC BOARDS
19 e-STUDIO3511/4511 PC BOARDS 19 - 8 November 2003 © TOSHIBA TEC
1-1, KANDA NISHIKI-CHO, CHIYODA-KU, TOKYO, 101-8442 JAPAN
