EPSON TERMINAL PRINTER LG1-570/lo7cJ L 4000566 REV.-B .
NOTICE “ All rights reserved. Reproduction of any part of this manual in any from whatsoever without SEIKO EPSON’s express written permission is forbidden. “ The contents of this manual are subject to change without notice. ‘ All efforts have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
REV.-A PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) personal injury, and 2) damage to equipment: DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by a DANGER heading. WARNING Signals a precaution which, if ignored, could result in damage to equipment.
REV.-B PREFACE This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of the LQ-570/l 070. The instructions and procedures included herein are intended for the experienced repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows: Chapter 1 - Provides a general product overview, lists specifications, and illustrates the main components of the printer.
REVISION SHEET REVISON DATE ISSUED A June 20, 1991 B Sept.
REV.-A TABLE OF CONTENTS CHAPTER 1. CHAPTER 2. CHAPTER 3. CHAPTER 4. CHAPTER 5. CHAPTER 6.
REV.-B CHAPTER 1 GENERAL DESCRIPTION 1.1 ..... FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1 1.2 .... S P E C I F I C A T I O N S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-3 .. 1 . 2 . 1 H a r d w a r e S p e c i f i c a t i o n s . . . . .
REV.-B LIST OF FIGURES Figure 1-1. Exterior View of theLQ-570/1070 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Figure 1-2. Pin Figure 1-3. Printable Area for Cut Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6 ... Figure 1-4. Printable Area for Continuous Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6 Figure 1-5. Character Figure 1-6. Data Transmission Timing . . . . . . . . . . . . . . . . . . . . . . . . . .
REV.-B 1.1 FEATURES The LQ-570/l 070 are small, light-weight, low-cost, printers with advanced paper handling that is compatible with the LQ-5 10/550/1010.
REV.-B Table 1-2.
REV.-B 1.2 SPECIFICATIONS This section provides specifications for the LQ-570/l 070 printer. 1.2.1 Hardware Specifications Printing method Serial, impact, dot matrix Pin configuration 24 wires (12 X 2 staggered, diameter 0.2 mm) Wires 1 Wires f~ II 1, I 2 ii - - - - - - - ’ $ ~ 1/90” - 1 _- j+-------- j - - - - - $ +L____ - - !!’’0’” ~ ~ 1/90” \ ~ +;------- / ‘- I // 1: /+ w 1/60” i i i 1 /60” Figure 1-2.
REV.-B ● Use the paper tension unit. ● Do not use multi-part cut-sheet forms, except with front insertion. ● Do not perform reverse feeds greater than 1/6 inch when using envelopes. 2. Push tractor feed (release lever in REAR PUSH POSITION). Paper must be loaded from the rear entrance. Release the friction-feed mechanism. Multi-part forms must be spot pasted beyond the perforation between the tractor holes. Paper for multiple copies must be carbonless multi-part paper. Use the paper tension unit.
REV.-B Table 1-4. Specifications for Cut Sheets (Carbonless Duplicating Paper) Width Length Thickness Weight Quality Copies 182 mm to 216 (’364) mm (7.2 in. to 8.5 (* 14.3) in.) 257 mm to 297 mm (10.1 in. to 11.7 in.) 0.065 mm to 0.14 mm (0.0025 in. to 0.0055 in.) - single sheet 0.12 mm to 0.32 mm (0.0047 in. to 0.012 in.) - total 17 lb. to 24 lb. (52.3 g/m2 to 90 g/m2) - single sheet 12 lb. to 15 lb.
REV.-B Printable area See figures 1-3, 1-4, and 1-5 - 257 mm (5.8 - 10. 1“) 148 - 257 (x 420) mm (5.8 - 10. 1“ {x 16.5)) f r o n t i n s e r t i o n 1 8 2 - 257 mm (7.2 - 10 1“) 182 - 257 (* 364) mm (7.2 - 10. 1“ (x 14.3’”)) ., top insertion 148 * 7 .,, Printable area max. 203.2 mm (8 in.) -1 ) -1 4 ~8.5 mm ‘ ‘: F ~’~~~’ 7 “ t 364mm ; (14.3”) max. :j /, * .J-I J&L ,,,mm .A (0.53”) or more v Y (* 136-column) (80-column): +1) 3.0 mm (O. 12 in.
REV.-B (80-column): ● 1) 13 mm (0.51 in.) or more when a paper width of 101 mm (4 in.) to 241 mm (9.5 in.) is used. 24 mm (0.9 in.)(rear insertion)\ 26 mm (1.0 in.)(front/bottom insertion) or more when a paper width of 254 mm (10 in.) is used. (1 36-column): 13 mm (0.51 in.) or more when a paper width of 101 mm to 401.3 mm (4 in. to 15.8 in.) is used. 15 mm or more when a paper width of 381 mm to 406 mm (15 in. to 16 in.) is used. 13 mm (rear insertion) (0.5 1 in.) /1 7 mm (front/bottom insertion) (0.
REV.-B 220 to 240 V version Rated voltage Input voltage range 220 to 240 VAC 198 to 264 VAC Rated frequency 50 to 60 Hz Input frequency 49.5 to 60.5 Hz Rated current 1.0 A Power consumption Approx. 33 W (during a self-test in draft mode, 10 cpi) Insulation resistance 10 megohms, minimum (at 500 VDC between AC line and chassis).
REV.-A 1.2.
REV.-B NOTES: High-speed draft is valid if the printer status is as follows: ● High-speed draft is selected by DIP switch. ● Emphasized character mode is not selected. ● Condensed character mode is not selected. ● Draft is selected. ● No D/L (download) characters are sent to the printer, ● The horizontal dot space of characters is not set. ● No bit image is sent to the printer. ● Super/subscript is not selected.
REV.-B Table 1-9. Printing (Bit Image Mode) Pins I I D e n s i t y (dpi) Bit Image Printing Mode } Printable Dots ( I Printing Speed (ips) 8 Single-density 60 480 (*8 16) 21.0 8 Dual-density 120 960 (“ 1632) 10.5 8 I Double-speed, dual-density 8 Quadruple-density 8 CRT graphics 8 I CRT graphics II I I 120 I 960 (“1632) I 21.0 240 1920 (*3264) 10.5 80 640 (“ 1088) 10.5 90 I 720 (“1224) I 14.0 24 Single-density 60 480 (*8 16) 21.
REV.-A Table 1-10. Character Matrix and Character Size Printing Mode I Face Matrix I HDD I C h a r a c t e r S i z e I Unit ESC sp High-speed draft, 10 pitch 7 x 22 90 2.0 x 3.1 — Draft, 10 pitch 9 x 22 120 1.9 x 3.1 120 Draft, 12 pitch 120 9 x 22 I 1.9 x 3.1 I Draft, 15 pitch I I 120 7 X 16 120 1.0 X 2.3 120 Draft, 10 pitch, condensed — 240 — 120 Draft, 12 pitch, condensed — 240 — 120 LQ, 10 pitch 31 x 22 360 2.2 x 3.1 180 LQ, 12 pitch 27 X 22 360 1.9 x 3.
REV.-A (Typical LQ character) (Typical draft character) 1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Ascender area 2 3 4 R I G H T L E F T : 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 s P A c E s P A c E !Descender area Ascender area R I G H T L E F T s P A c E s P A c E I Descender area .
REV.-A 1.3 INTERFACE OVERVIEW The printer has a parallel interface with the specifications described below. 1.3.1 Parallel Interface Specifications for the 8-bit parallel interface are as follows: Data format 8-bit parallel Synchronization STROBE signal Handshaking BUSY and ACKNLG signal Signal level TTL-compatible Adaptable connector 57-30360 (Amphenol) Data transmission timing See Figure 1-6. or equivalent BUSY { ~; ACKNLG DATA STROBE o.5/is o.5Lls 0.5/S 5/S 5/.fs min. min. min.
Table 1-11. Connector Pin Assignments and Signal Functions (Cont.) Pin No. Signal Name 14 AUTO FEED-XT Return Pin No. Dir. Functional Description — IN If LOW when the printer is initialized, the printer automatically performs a line feed upon input of the CR code (Auto LF). 15 Not used. 16 GND 17 Chassis GND — — Ground for twisted-pair grounding. — Chassis ground level of printer. Not used. 18 19 to 30 GND 31 I NIT 32 ERROR 33 GND Ground for twisted-pair grounding.
REV.-A 1.4 CONTROL PANEL On the control panel are: a power button (labeled OPERATE), 7 non-lock type buttons, and 19 indicators. Figure 1-7. Control Panel BUTTONS (1) OPERATE Button This button turns on the power supply to the printer. (2) PAUSE Button This button controls printer action. Pressing the button toggles the printer between PAUSE condition (no printing, no paper feeding, and not accepting data) and RUNNING.
REV.-A (7) FONT Button Pressing this button selects a font, and pressing it continuously selects the next one, sequentially. The FONT LED indicates the currently selected font. (8) CONDENSED Button Pressing this button toggles the printing mode between normal and condensed, alternatively. NOTE: Selections of the FONT and CONDENSED buttons are stored as defaults, so that the last FONT and the CONDENSED selection become effective when the printer is initialized.
REV.-A 1.5 DIP SWITCHES AND JUMPER SETTING This section describes the DIP switch selections and jumper setting for the LQ-570 printer. 1.5.1 DIP Switch Settings The two DIP switch banks for the printer, located on control panel, function as shown in tables 1-12 through 1-15. (Note that the status of the DIP switches is read only at power on or upon receipt of the INIT signal.) Table 1-12. Settings for DIP Switch 1 (SW1) Description No.
REV.-A Table 1-14. International Character Set Selection 1-1 1-2 1-3 ON ON ON ON OFF OFF OFF OFF ON ON OFF OFF ON ON OFF OFF ON OFF ON OFF ON OFF ON OFF Pc Country 437 850 860 863 865 (437) (437) (437) Us. France Germany U.K. Denmark 1 Sweden Italy Spain 1 L — When SW 1-4 is OFF, If graphic table was selected by ESC t 1, PC becomes 437. When SW 1-4 is ON, if italic table was selected by ESC t O, country setting becomes U.S. Table 1-15.
REV.-A 1.6 OPERATING INSTRUCTIONS This section describes the self-test and hexadecimal dump functions and also includes the error states, printer initialization, and buzzer operation. 1.6.1 Self-Test To run the self-test using draft mode, turn the printer on while pressing the LOAD/EJECT button. To run the self-test using the letter quality (LQ) mode, turn the printer on while pressing the LINE FEED\FORM FEED button. You can stop or start self-test printing by pressing the PAUSE button.
REV.-A 1.6.3 Paper-out Detection and Forms Override Function When the paper-out detector, attached to the printer mechanism, detects a paper-end, the printer first performs a forms override. If paper loading fails, the BUSY signal goes HIGH, the PAPER OUT indicator is lit, the interface PE signal becomes HIGH, the ERROR signal becomes LOW, and the printer enters the PAUSE condition automatically. By ignoring the paper out, the printer can print additional lines after the paper out is detected.
REV.-A (a) Initializes printer mechanism. (b) Clears input data buffer. (c) Clears downloaded character set. (d) Clears print buffer. (e) Returns printer settings to their default values. (2) Software initialization Input of the ESC @ command also initializes the printer. Printer initialization by ESC @ code does not perform functions (a), (b), and (c) above. The settings changed by the last SelecType operation are maintained.
REV.-A Automatic cut-sheet loading and ejection with cut-sheet feeder Move the release lever to the friction-feed position, and place the sheets into the hopper of the cut-sheet feeder. Pressing the LOAD/EJECT button loads one sheet to the top-of-form position. If a paper-out is detected before printing starts, a sheet will again be loaded automatically to the top-of-form position.
REV.-B Short-tear-off To access the short-tear-off function, press the TEAR-OFF button. The release lever must be in the tractor position. The paper advances to the tear-off position whether the printer is in PAUSE or RUNNING condition. At this time, the TEAR-OFF LED lights to indicate that you can use the LOAD/EJECT and LINE FEED/FORM FEED buttons, in conjunction with the ALT button, for backward and forward micro feed adjustment. Using micro feed, adjust the paper to meet the tear-off edge.
REV.-A 1.6.11 Printer Protection for H e a v y -Duty Pr inting This printer has a printhead protection function to prevent it from overheating and to protect the printer when the head driver voltage drops. If head temperature exceeds its maximum value, printing stops automatically until the head temperature drops to a certain value before printing resumes. Printing resumes at a lower print speed at first. However, as the head temperature decreases, print speed increases to normal speed automatically.
REV.-B 1.7 MAIN COMPONENTS I The main components of the LQ-570/l 070 printers are designed for easy removal and replacement to maintain and repair the printer. The main components are: 1) C062 MAIN board: the main control board; the CPU on this board controls all main functions. 2) C062 PNL board: the control panel board. 3) C062 PSB\PSE board: the power supply board. 4) M-5 E10/5E60: the printer mechanism. C062 PSB/PSE Board C062 MAIN Board & ,Y 7 ,U “.
REV.-B 1.7.2 C062 PNL Board (Control Panel Circuit Board) The C062 PNL board is the LQ-570\1070 control panel, which includes the indicator LEDs, switches, I and DIP switches. Figure 1-13. C062 PNL Board 1.7.3 C062 PSB/PSE Board (Power Supply Circuit Board) The power supply unit consists of a switching regulator circuit, which converts the AC line voltage to the DC voltages (for example, +35V and + 5V) used by the printer.
REV.-B 1 . 7 . 4 P r i n t e r M e c h a n i s m ( M - 5 E10/M-5E60) The M-5E 10/M-5E60 printer mechanism was developed specifically for use with LQ-570/l 070 printer. The components include a carriage motor, carriage mechanism, paper-feed motor, paper-feed mechanism, ribbon-feed mechanism, printhead, and sensors. This printer mechanism allows three ways of paper insertion. This picture shows an 80-column Printer. T h e M-5E1O a n d M-5E60 d i f f e r i n width only. I Figure 1-15.
REV.-B CHAPTER 2 OPERATION PRINCIPLES 2.1 OVERVIEW OF PRINTER MECHANISM OPERATION . . . . . . . . . . . . . . . 2-1 2.1.1 Printhead M e c h a n i s m . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 2.1.2 carriage Movement Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .2-2 .. 2.1.3 Paper Feed Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REV.-B Figure 2-12. Paper Path for Bottom Entrance Pull Tractor Feed... 2-8 Figure 2-13. Paper Path for Front Entrance Friction Feed. . . . . . . . . . . . . . . 2-9 Figure 2-14. Paper Path for Front Entrance Pull Tractor Feed. . . . . . . 2-9 . Figure 2-15. Ribbon Advance Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1o Figure 2-16. Power Supply Circuit Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12 Figure 2-17.
REV.-B 2.1 OVERVIEW OF PRINTER MECHANISM OPERATION This section describes the PRINTER MECHANISM of the Model-5E 10\5E60 printer unit and explains how the printer works. The Model-5E 10/5E60 has a PRINTER MECHANISM that features a 24-pin impact dot printhead for serial printing. There are four main parts to the printer mechanism: 1) the printhead mechanism, 2) the carriage movement mechanism, 3) the paper advance mechanism, and 4) the ribbon advance mechanism. Each of these is described below. 2.1.
REV.-B 2.1.2 Carriage Movement Mechanism A timing belt is connected to the carriage on the lower side. With the printhead installed, this carriage moves in either direction along the SHAFT, CR, GUIDE. The carriage is driven by the MOTOR, CR a stepping motor that drives the TIMING BELT via the BELT PULLEY. The DETECTOR ASSY., HP DETECTS when the carriage is in the home position. Left \ $!! !% Carriage ( DETECTO I SHAFT, CR, GUIDE MOTOR, CR h BELT PU”LLEY Figure 2-2.
REV.-B 2.1.3 Paper Feed Mechanism Cut sheet paper is advanced by friction feed. Continuous form paper is advanced using a tractor feed mechanism. There are three ways to advance the paper with tractor feed: using the push tractor, using the pull tractor, and using the push and pull tractors together. Any one of these three tractor configurations can feed paper through the printer.
REV.-B Push Tractor Method I When the push tractor is selected, the SPUR GEAR, 16 engages the SPUR GEAR, 17 (Tractor gear) on the TRACTOR ASSY. COMBINATION GEAR, 8.5, 30 is driven by the paper-feed gear, which in turn is driven by the paper-feed motor pinion gear. The paper-feed pinion gear, when turning in the direction of the black arrow, results in pushing the paper through the mechanism. I During tractor feeding, the LEVER, G, ADJUST is set to the tractor position to disengage the friction drive.
REV.-B Pull Tractor Method Using pull tractor feed to advance the paper is basically the same as using push tractor feed. In push tractor feed, the TRACTOR ASSY. (paper advance mechanism) is before the paper entrance. It pushes the paper through the PRINTER MECHANISM. Puil tractor feed, however, has the opPosite arran9ementl with the tractor situated after the paper entrance. Since it pulls the paper through the PRINTER MECHANISM, it requires no paper tension unit.
REV.-B The LEVER, RELEASE switches between friction feed and tractor feed. Setting the LEVER, RELEASE to the friction feed position presses the paper advance roller against the PLATEN. Setting the release lever to the tractor feed position releases this pressure, so that the paper advance roller separates from the PLATEN. The DETECTOR ASSY., RELEASE senses the current position of the LEVER, RELEASE. E R GUIDE ., RELEASE Paper Feed Roller Figure 2-8. LEVER, RELEASE Movement 2.1.3.
REV.-B Rear entrance paper insertion When you feed paper into the printer through the rear entrance, the method to advance the paper can be: the push tractor, or the push-pull tractor. The rear paper-out detector senses when the paper has run out. Paper (Continuous) ROLLER ASSY., PAPER EJECT \ Printhead PAPER GUIDE TRACTOR ASSY. DETECTOR ASSY., Paper Feed Roller Figure 2-10. Paper Path for Rear Entrance Push Tractor Feed Paper (Continuous) \/~– TRACTOR ASSY. TRACTOR ASSY. Printhead DETECTOR ASSY.
REV.-B Bottom entrance paper insertion When you feed paper into the printer through the bottom entrance, the pull tractor advances the paper. The front paper-out detector senses when the paper runs out. Paper (Continuous) h M“?.’?.TRACT”RA’S’” PF Drive Roller ,. ““’C’”R’’’YPEFR”NTWP “aper’eea”o”er / From Bottom Insertion Figure 2-12.
REV.-B Front entrance paper insertion When you feed paper into the printer through the front entrance, the paper can be advanced either with friction feed or the pull tractor. The front paper-out detector senses when the paper runs out. Printhead Paper (Cut sheet) \ ROLLER ASSY., PAPER EJECT PF Drive Roller DETECTOR ASSY., PE, FRONT Paper Feed Roller From Front Insertion Figure 2-13. Paper Path for Front Entrance Friction Feed Paper (Continuous) Printhead TRACTOR ASSY. DETECTOR ASSY.
REV.-B 2.1.4 Ribbon Advance Mechanism The ribbon drive gear advances the ribbon through a gear linkage. This arrangement of gears makes the ribbon drive gear always rotate in a counterclockwise direction, regardless of the direction the carriage is moving. Table 2-2.
REV.-B 2.2 POWER SUPPLY OPERATION The printer can be powered by either of two power supply boards: the 120 V C062 PSB board or the 220/240 V C062 PSE board. The only difference in the way these two boards operate is in the primary circuitry. How they work to supply power to the printer is identical. These power boards output the DC current necessary to drive the printer control circuits and printer drive mechanism. Table 2-3 shows the input voltages and fuse ratings for these boards. Table 2-3.
REV.-A Second, there are four circuits to protect the supply circuitry and avoid danger. The +5 VDC line contains a current overload protection circuit and a voltage overload protection circuit. The current overload protection circuit is part of the + 5 VDC supply circuit. It cuts the + 5 VDC line if the current is too great. The + 5 V voltage overload protection circuit cuts the supply if the voltage reaches or exceeds + 7 VDC.
REV.-B 2.3 CONTROL CIRCUIT OPERATION The control circuit consists of two boards: the C062 MAIN board, which acts as the main board, and the C062 PNL board, which acts as the control panel board. This section describes how these boards work. 2.3.1 Control Circuit Operation Overview The printer CPU is an 8-bit CPU TMP90C041 running at 10 MHz. It oversees control of all the components of the printer.
REV.-B Table 2-5 lists the functions of the main components and circuits of the printer. The CPU converts the print data sent from the host computer to image data (the print image). The image data is then loaded to RAM. Each line of data is processed sequentially. The CPU transfers the print data to the printhead drive circuit. The CPU sends the printhead drive pulse to the printhead drive circuit. The length of this pulse corresponds to the printhead drive voltage.
REV.-B Table 2-5. Functions of the Main IC and Circuits (Cont.) IC or Circuit Functions Location STK-6022B 2A This is a single chip that houses drive circuits for the printhead, MOTOR,CR and MOTOR, PF of the PRINTER MECHANISM. The chip also includes the various sensor input circuits for the PRINTER MECHANISM. PROM 5E PROM contains the program that runs the CPU. RAM 6E IE Holds the CPU working area and the various buffers. (1 E is not used for an 80-column device and is not installed.
REV.-A Power On CPU Self Reset I i +5 V Line - Vmml Figure 2-20. RESET Signal Timing 2.3.3 Sensor Circuits Figure 2-21 shows the sensor circuits in block diagram form. Detection of any excessive printhead temperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, such as the CRHOME signal, pass through the STK-6022B unit before reaching the CPU. Terminals P50 to P55 on the CPU are used for the A/D convertor. The Vref circuit generates the A\D convertor reference voltage Vref.
REV.-B 2.3.4 MOTOR, CR Drive Circuit I Figure 2-22 shows the MOTOR, CR drive circuit. An open-loop, constant-current drive arrangement is used for running the MOTOR, CR. The motor is driven by 2-2 phase excitation and 1-2 phase excitation. I 2-2 phase excitation corresponds to two 1-2 phase excitation steps. Thus, for each single step phase change of a 2-2 phase excitation motor, the carriage moves 1/1 20 inch.
REV.-B I 2.3.5 MOTOR, PF Drive Circuit The printer uses a stepping motor to advance the paper. The minimum amount of paper that can be advanced is 1/360 inch. The motor is a 2-2 phase or 1-2 phase, constant-voltage drive type. P70 to I P73 on the CPU are the control ports for the stepping motor. MOTOR, PF phase data is output through these ports. PFA to PFD are turned on and off within the STK-6022B according to this phase data sent from the CPU.
REV.-A 2.3.6 Printhead Drive Circuit Figure 2-24 shows the printhead drive circuit in block diagram form. The print data already has been expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the STK-6022B. The CPU samples the voltage of the +35 V line via the A/D convertor (see Section 2.3.3). The CPU outputs a pulse via the CPU time output port P83. The length of this pulse corresponds to the voltage of the +35 V line.
REV.-A 2 . 3 . 6 Printhead D r i v e C i r c u i t Figure 2-24 shows the printhead drive circuit in block diagram form. The print data already has been expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the STK-6022B. The CPU samples the voltage of the +35 V line via the A/D convertor (see Section 2.3.3). The CPU outputs a pulse via the CPU time output port P83.
REV.-B CHAPTER 3 DISASSEMBLY AND ASSEMBLY .... 3.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 3.1.1 Precautions for Disassembling the Printer . . . . . . . . . . . . . . . . . . . . . . 3-1 3 . 1 . 2 Took . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
REV.-B LIST OF FIGURES Figure 3-1. Flowchart for Disassembling the Printer . . . . . . . . . . . . . . . . . . . . . . 3-4 Figure 3-2. Removing the Printer Cover and .. the Paper Eject Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Figure 3-3. .. Removing the Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5 Figure 3-4. . -6 Removing the HOUSING, FRONT . . .
REV.-A 3.1 OVERVIEW This section describes the various points to note when disassembling and assembling the printer. 3.1.1 Precautions for Disassembling the Printer Follow the precautions below when disassembling the printer. WARNING Before disassembling, assembling, or adjusting the printer, disconnect the power supply cable from the external AC power socket. Failure to do so risks personal injury. The power supply switch for the printer is wired into the secondary circuitry.
REV.-A 3.1.3 Service Checks After Repair When printer components are to be sent back to the customer after servicing, first use the checklist shown in Table 3-3 to note the current state of the components. This checklist provides a record to make servicing and shipping more efficient. Table 3-3.
REV.-A 3.1.4 Specifications for Screws In the following sections, abbreviations are used for small parts, such as screws and washers. Tables 3-4 and 3-5 list these abbreviations. Table 3-4. Abbreviations Used for Screws Part Neme Abbreviation CBS(C) CBB(C) CB CBS(0) Cross-recessed Bind head Cone point S tight screw Cross-recessed Bind head Cone point B tight screw Cross-recessed Bind head screw Cross-recessed Bind head S tight with screw with Outside toothed lock washer Table 3-5.
REV.-A 3.2 DISASSEMBLY AND ASSEMBLY This section describes the procedures for disassembling and assembling the main components of the printer. When the procedure for installing a component into the printer is simply the reverse of the procedure for removing the component, no description of how to install the component is given. Any points of special concern when assembling or adjusting a component part are given after the description of the procedure. It is important to take note of these points.
REV.-B 3.2.1 Changing the Printhead 1. Remove the FRAME ASSY., SHEET GUIDE. 2. Remove the COVER ASSY., EJECT. HEET GUIDE ASSY., EJECT “(This illustration shows the LQ-570, an 80-column printer. The difference b e t w e e n t h e LQ-570 and the LQ1070 is only in carriage width.) Figure 3-2. Removing the FRAME ASSY., SHEET GUIDE and the COVER ASSY., EJECT 3. Release the two levers that hold the printhead to the carriage. Lift out the printhead. 4.
REV.-B 3.2.2 Removing the Printer Case This section describes how to remove the front case and HOUSING ASSY., UPPER. 3.2.2.1 Removing the HOUING, FRONT 1. Remove the COVER ASSY., PRINTER, FRONT. 2. Remove the HOUSING, FRONT. 3. Use a screwdriver to release the clips that hold the front case to the HOUSING ASSY., UPPER. Open the HOUSING, FRONT. Remove connector CN 1 on the BOARD ASSY., PANEL (C062 PNL). Remove the HOUSING, FRONT. picture shows an 80- printer) I Figure 3-4.
REV.-B 3.2.3 Removing the Circuit Boards This section describes how to remove the BOARD ASSY., MAIN (C062 MAIN board), the BOARD ASSY., POWER SUPPLY (C062 PSB/PSE board) and the BOARD ASSY., PANEL (C062 PNL board). 3.2.3.1 Removing the BOARD ASSY., MAIN (C062 MAIN Board) 1. Remove the HOUSING ASSY.,UPPER (see Section 3.2.2.2). 2. Remove the CB (M3 X 6) screws that hold the HOLDING PLATE, FFC to the SHIELD PLATE, MAIN BOARD . Remove the HOLDING PLATE, FFC. 3.
REV.-B I Point to Note for Assembly and Adjustment After replacing the BOARD ASSY., MAIN, you must adjust the bidirectional print position again to ensure bidirectional printing is correctly aligned (see Section 4.2). 3.2.3.2 Removing the BOARD ASSY., POWER SUPPLY (C062 PSB/PSE 1. Remove the HOUSING ASSY., UPPER (see Section 3.2.2.2). Board) 2. Remove the cable for connector CN 13 from the BOARD ASSY., MAIN, 3. Remove the cable for connector CN 1 from the BOARD ASSY., POWER SUPPLY. 4.
REV.-B 3.2.4 Removing the PRINTER MECHANISM 1. Remove the HOUSING ASSY., UPPER (see Section 3.2.2.2). 2. Remove the CB (M3X 6) screws that attach the HOLDING PLATE., FFC to the SHIELD PLATE, MAIN BOARD. Remove the HOLDING PLATE,FFC. 3. Disconnect the 2 FFCS(CABLE, HEAD, FRONT(,REAR))from the CN6 and CN7 connectors on the BORAD ASSY., MAIN. Remove the cables for the following BOARD ASSY.
REV.-B 3.2.5 Disassembling the PRINTER MECHANISM This section describes how to disassemble the main components of the PRINTER MECHANISM. 3.2.5.1 Removing the MOTOR, CR 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the printer spring (778 gm) from the base frame and the MOTOR, CR frame. 3. Remove the TIMING BELT from the BELT PULLEY. 4. Remove the MOTOR, CR frame from the HOUSING ASSY., LOWER. 5.
REV.-B 3.2.5.2 Removing the MOTOR, PF 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER(see Section 3.2.4). 2. Remove the COMPRESSION SPRING, 200 that holds the platen shaft. 3. Release the two clips holding the MOTOR, PF to the FRAME, MAIN, RIGHT. 4. Remove the MOTOR, PF from the FRAME, MAIN, RIGHT. FRAME, MAIN, RIGHT . MOTO’R, PF Figure 3-12. Removing the MOTOR, PF Point to Note for Assembly See Section 3.2.5.13 for details on arranging and positioning the motor cable. 3.2.5.
REV.-B 3.2.5.4 Removing the Carriage 1. Remove the FFC (CABLE, HEAD, FRONT(,REAR)) (see Section 3.2.5.3). 2. Remove the TIMING BELT from the carriage. 3. Use the box driver to rotate and free the adjusting bushing. This bushing holds the SHAFT, CR, GUIDE to the FRAME, MAIN, RIGHT. Remove the bushing. 4. Remove the carriage unit together with the SHAFT, CR, GUIDE by pulling the SHAFT, CR, GUIDE a little to the right. BUSH, PARALLEL, ADJUST \ d UIDE Figure 3-14.
REV.-B 3.2.5.5 Removing the PLATEN 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the two CBP(C) (M3 X 10) screws that hold the COVER, PLATEN, LOWER to the left and FRAME, MAIN, RIGHT. Remove the COVER, PLATEN, LOWER. 3. Remove the COMPRESSION SPRING, 200 that holds the platen shaft (see Section 3.2.5.2, step 2). 4. Set the head LEVER, G, ADJUST to the most forward position. 5. Remove the two clips that hold the LEVER, RELEASE to the platen shaft.
REV.-B 3.2.5.6 Removing and Disassembling the FRAME, MAIN, RIGHT 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the PLATEN from the PRINTER MECHANISM (see Section 3.2.5.5). 3. Remove the MOTOR, CR from the FRAME, MAIN, BASE (see Section 3.2.5. 1). 4. Remove the two CBS(C)(P) (M3 X 10) screws that hold the FRAME, MAIN, RIGHT to the FRAME, MAIN, BASE. Remove the FRAME, MAIN, RIGHT from the FRAME, MAIN, BASE. 5.
REV.-B 3.2.5.7 Removing and Disassembling the PAPER GUIDE (Including the DETECTOR ASSY., HP) 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the PLATEN from the PRINTER MECHANISM (see Section 3.2.5.5). 3. Remove the FRAME, MAIN, RIGHT from the FRAME, MAIN, BASE (see Section 3.2.5.6). 4. Remove the three springs (32 gm) from the lower side of the PRINTER MECHANISM . (These springs join the PAPER GUIDE support to the FRAME, MAIN, BASE.) 5.
REV.-B 9. While holding down the three LEVER ASSY., PF, pull out and remove the SHAFT, RELEASE Remove the LEVER ASSY., PF and the COMPRESSION SPRING, 1300 from the PAPER GUIDE. 10. While holding open the clips that secure the DETECTOR ASSY., RELEASE to the PAPER GUIDE, remove the DETECTOR ASSY., RELEASE. LEVER ASSY., PF (* This picture is 80-column. 136-column printer has four Paper advance Rollers and four sDrinas. ,- ‘~ ~—~ C O M P R E S S I O N S P R I N G , 1 3 0 0 { ‘ / 5Ab A % (il.
REV.-B 3.2.5.8 Removing the DETECTOR ASSY., HP 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3,2.4). 2, Remove the clips from the rear side of the FRAME, MAIN, BASE that hold the DETECTOR ASSY., HP. Remove the DETECTOR ASSY., HP from the rear of the FRAME, MAIN, BASE. DETECTOR ASSY., HP / Figure 3-23. Removing the DETECTOR ASSY., HP 3.2.5.9 Removing the DETECTOR ASSY., PE, REAR 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2.
REV.-B 3.2.5.10 Removing the DETECTOR ASSY., PE, FRONT 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Open the clips that hold the DETECTOR ASSY., PE, FRONT to the FRAME, MAIN, BASE. Remove the DETECTOR ASSY., PE, FRONT. DETECTOR ASSY , I I Figure 3-25. Removing the DETECTOR ASSY., PE, FRONT 3.2.5.11 Removing the DETECTOR ASSY., PLATEN 1, Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the clips that hold DETECTOR ASSY.
REV.-B 3.2.5.12 Disassembling the TRACTOR ASSY. 1. Remove the TRACTOR ASSY. from the printer. 2. Remove the SPUR GEAR, 17 from the SHAFT, TRACTOR. 3. Remove the FRAME, TRACTOR, RIGHT from the SHAFT, TRACTOR and the SHAFT, TRACTOR, GUIDE. 4. Remove RETAINING RING from the SHAFT, TRACTOR. 5. Remove the TRACTOR ASSEMBLY (RIGHT), the PAPER SUPPORT unit, and the TRACTOR ASSEMBLY [LEFT) from the SHAFT, TRACTOR and SHAFT, TRACTOR, GUIDE. ‘.
REV.-B 3.2.5.13 Arranging the Cables I Figure 3-28 shows how the cables are arranged for the PRINTER MECHANISM. When assembling the printer, make sure that the cables are laid out as shown in this figure. PRINTER MECHANISM (Bottom) n A 1 Mlw t’ 11: B — lnluiaJl — — n n II (*This is an 80-column printer.) Figure 3-28.
REV.-B CHAPTER 4 ADJUSTMENTS 4.1 ADJUSTING THE PRINTER MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4.1.1 MOTOR, CR Backlash Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 .. 4.1.2 Platen Gap Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2 4.2 BIDIRECTIONAL PRINT POSITION ADJUSTMENT . . . . . . . . . . . . . . . . . . . . .
REV.-B 4.1 ADJUSTING THE PRINTER MECHANISM This section describes the various adjustments you may need to make to the PRINTER MECHANISM. I 4.1.1 MOTOR, CR Backlash Adjustment In the MOTOR, CR backlash adjustment, the pinion gear of the MOTOR, CR is meshed smoothly with the BELT PULLEY cog. If the pinion gear is poorly aligned, printer operation becomes noisy, and the accuracy of character alignment during printing suffers. 1. Remove the MOTOR, CR, along with the FRAME ASSY.
REV.-B 4.1.2 Platen Gap Adjustment If you have rotated or reassembled the SHAFT, CR, GUIDE or the adjusting bushing, or if printing is abnormal, you must adjust the gap between the PLATEN and the printhead. I 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the printhead from the carriage (see Section 3.2. 1). 3. Use tweezers to remove the RIBBON MASK from the carriage. I / I RIBBON MASK \ + ‘ “riage I I Figure 4-2. Removing the RIBBON MASK 4. 5. 6. 7. 8.
REV.-H 9. Rotate the adjusting bushing until the platen gap is large enough for a thickness gauge of 0.44 mm thickness but too narrow for one of 0.47 mm thickness. 0.45 mm %1 L (y PLATEN Printhead / + Figure 4-4. Platen Gap 10. 11. Move the carriage until the edge of the printhead is at the 75th column print position. Use the box driver (7 mm) to rotate the adjusting bushing on the FRAME, MAIN, RIGHT of the PRINTER MECHANISM. I 12.
REV.-B 4.2 BIDIRECTIONAL PRINT POSITION ADJUSTMENT This section describes how to adjust the bidirectional print position to ensure correct printing alignment. 4.2.1 Overview of Bidirectional Print Position Adjustment This printer prints characters when the carriage is moving in either direction (i.e., from left to right or from right to left). Adjustment is necessary to ensure that the printing of characters in one direction is properly aligned with the printing of characters in the opposite direction.
REV.-A Are the characters aligned vertically? NO ~ GO TO STEp 30 YES ~ GO TO STEP 4 . 3. Referring the odd-numbered lines (Ist and 3rd), adjust the even-numbered lines (2nd and 4th). “ If the even-numbered lines are shifted to the right: ~ Press the LOAD/EJECT button once while pressing the ALT button. (The reference value increases + 1 and even lines shift to the left.) ● If the even-numbered lines are shifted to the left: ~ Press the LF/FF button once while pressing the ALT button.
REV.-B 4.3 CIRCUIT ADJUSTMENT I The BOARD ASSY., MAIN (C062 MAIN BOARD) contains variable resistor VR1, which is used for balancing the circuitry. When any of the following parts are replaced, the circuitry must be balanced again by adjusting this variable resistance: R14, RI 5, R13, C8, and VR 1 If the circuitry is not correctly balanced in this way, the CPU A\D converter fails to function normally and printer operation is affected. 4.3.
REV.-B CHAPTER 5 TROUBLESHOOTING 5.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1 . 5.2 REPAIR BY UNIT REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2 5.3 REPAIR OF THE BOARD ASSY., MAIN (C062 MAIN BOARD) ..................................................................".."."...
REV.-B 5.1 OVERVIEW Problems in the printer may exhibit a variety of symptoms, which can complicate the task of troubleshooting, unless you follow the procedure shown in the flowchart below. START 5.2 5-2 Repair by unit replacement I [ 1 5.3 5-14 Repair of the BOARD ASSY., MAIN 5.4 5-15 Repair of the printer mechanism . The fault is corrected Figure 5-1. Troubleshooting Procedure The following tables provide troubleshooting information. Table 5-1.
REV.-B 5.2 REPAIR BY UNIT REPLACEMENT For most problems, it is sufficient for you to determine the difficulty to the unit level. Refer to Table 5-3, identify what the problem is, then perform the checks according to the corresponding flowchart. and Reference Pages Table 5-3. Svm~toms —. . See Page Problem Symptom Printer fails to operate when power is on. Carriage operation is abnorreal. Printing is faulty during selftest, but carriage operation is normal. ● Carriage does not move.
REV.-B (1) Printer Fails to Operate when Power is On START I Use correct AC input voltage. Replace the fuSe and disconnect :~;:don the main No is turned ON again, Measure the output voltage from the Power Supply board. . < 1 Replace the BOARD ASSY., PoWER SUPPLY. * No 1 1 Replace the PRINTER I 1 MECHANISM.
REV.-B (2) Carriage Operation is Abnormal CN 12,CN8,CN9,CN 10, CN4,CN5,CN6, and CN7 connecting the BOARD ASSY., MAIN and the PRINTER MECHANISM inserted Secure I connectors. I Yes No 4 END * No Refer to section 5.5, Repair of the PRINTER MECHANISM. Yes No the fault corrected? Yes Replace the BOARD ASSY., MAIN.
REV.-B Printing is Faulty During Self-Test, but Carriage Operation is Normal ( START Set the head LEVER,G, ADJUST to the 2nd position, and perform and CN7 connecting the BOARD ASSY., MAIN and the PRINTER MECHANISM. > a n y ao~ mlsslngf Perform bidirectional printing adjustment. o A No the fault corrected? Replace the printhead Q END Yes the fault corrected? Replace the BOARD AS SY., MAIN. .
Check printhead resistance. Yes Replace pluggable chips. Yes Replace printhead. Replace printhead and logic PCB. Yes No Replace logic PCB.
Q D I Check printhead resistance again. I I T Replace printhead. + Replace printhead cable. /\ k 1 Perform final test.
REV.-A # 2 0 # 4 0 # 6 0 # 8 0 o 0:: o o #7 o o #11 Oqls o o o o o #5 #9 #15 #17 #19 #21 423 # 240 < Wire Assignment ) Coil Resistance: 45.5 ~3.2 Q at 25°C (Between each dot wire and common.) TEMP2 # 2 0 tl12 # 2 4 @ @ @ Q/’@\g g & @ @ @ TEMP1 *4 # 8 < @ #16 { @ @ --—. @ @ ~ cOM. H 21 tIi3 #5 Terminal Assignment ) Figure 5-2.
(4) Paper Feeding is Abnormal (but Printing is Normal) START < No Load the paper correctly. i 6 A platen knob rotate manually with power ‘T’ Refer to seCtiOn 5.5, Repair of the PRINTER MECHANISM. I Yes Replace the BOARD ASSY., MAIN. 4 No Replace the BOARD ASSY., MAIN. No Refer to seCt;On 5.5, Replace the BOARD ASSY., Repair of the PRINTER MAIN and the MOTOR, PF. MECHANISM.
REV.-A No Yes 1 Replace defective m oto r. Replace logic PCB. NOTE < NOTE B n Check motor resistance. Perform final test. No Replace motor and 1/0 cable. END NOTE Yes Replace motor. I NOTE No No 3 v 1 Yes I Perform final test. I NOTE: Perform bidirectional print alignment adjustment.
1 Inspect gears for damage or debris. 3 Check left and right tractor assembly for proper phasing. Clean or replace. Yes No < . w No Inspect paper path. Reform final test. END 5-11 Adjust phasing or replace sprocket assembly.
REV.-B (5) Control Panel Operation is Abnormal ASSY MAIN connected Reinsert connector CN3 correctly. k“ No Is the fault corrected? Yes I T7 END v No Replace the BOARD ASSY., MAIN. Replace the BOARD ASSY., PANEL. No Replace the BOARD ASSY., MAIN. T7 Replace the BOARD ASSY., PANEL.
(6) Printing of Data Sent by the Host Computer is Faulty NOTE: It is assumed here that the host computer is operating normally. Perform self-test printing. No Refer to other troubleshooting items. I Replace the BOARD ASSY., MAIN.
REV.-B 5.3 REPAIR OF THE MAIN BOARD This section provides instructions for repairing the BOARD ASSY., MAIN when it is defective and describes various symptoms, likely causes, and checkpoints. Checkpoints refer to proper waveforms, resistance values, and other values to be checked to evaluate the operation of any component that might be bad. Check these values and take the appropriate action. Table 5-4. Repair of a Problem in the BOARD ASSY., MAIN I Problem The printer does not operate at all.
REV.-B Problem rhe printer ioes not op?rate at all. The carriage operates abnormally. Table 5-4. Repair of a Problem in the BOARD ASSY., MAIN (Cont.) Checkpoint Cause Symptom The CPU does not operate. The carriage does not operate at all. I Solution Replace IC5E or IC6E. Either ROM or RAM is defective. The CPU is defective. :heck the oscillator signal at either pin 33 or pin 34 of the CPU. If a signal is detected, replace ICI C. Otherwise, replace CR1. ICI C is defective.
Table 5-4. Repair of a Problem in the BOARD ASSY., MAIN (Cont.) I Problem Symptom Cause Checkpoint Self-test print- Self-test is not executed. The CPU can’t measure the voltage on the +35V line. Measure the voltage at Vref (pin 1) of IC4D is At IC4D, check the input signal at pin 101 and the output signal at pin 46. ing is abnormal. defective. Solution Adjust VR 1. IC 1 C. The normal voltage is 4.741 V. Replace IC4D. A particular dot is not being printed. IC2A is defective. Replace IC2A.
REV.-B 5.4 REPAIR OF THE PRINTER MECHANISM For detailed procedures for replacing or adjusting parts, refer to Chapter 3, Dkassemb/yandAssemb/y, and Chapter 4, Adjustment. If a problem or symptom recurs following an attempted repair, refer to Table 5-5 to try to find other potential causes. Table 5-5. Repair of the PRINTER MECHANISM Problem The MOTOR, CR fails to operate. The carriage does not operate norreally at power on [after the carriage has been manually sentered prior to power on).
REV.-B I Table 5-5. ReDair of the PRINTER MECHANISM (Cont.) Problem Self-test printing is abnormal. Symptom A particular dot fails to print. Cause The printhead is defective. Checkpoint Measure the coil resistance of the printhead. The normal value is approximately 45.5 Solution Replace the printhead. ohms. Check whether the dot wire is worn. The printing is too light, or the print density is not uniform. Paper feeding is ~bnormal.
REV.-B Table 5-5. ReDair of the PRINTER MECHANISM (Cont.] —r Problem The ribbon feed is abnormal. ‘aper becomes ;tained. kinting continues fter the paper mds or when no Iaper is loaded. I Checkpoint Solution The ribbon cartridge is defective. Dismount the ribbon cartridge, rotate its knob manually, and check whether the ribbon feeds normally. Replace the ribbon cartridge. Foreign substances are caught in the gears. Check whether the ribbon driving gear rotates when the carriage is moved manually.
REV.-B CHAPTER 6 MAINTENANCE 6.1 PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.2 LUBRICATION AND ADHESIVE APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 LIST OF FIGURES Figure 6-1. Correct Adhesive Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..6-2 .. Figure 6-2. LQ-570 Lubrication Points . . . . . . . . . . . . . . . .
REV.-B 6.1 PREVENTIVE MAINTENANCE Preventive maintenance includes regular cleaning of the case exterior (using denatured alcohol), as well as occasional vacuuming of the mechanism’s interior to remove dust and paper debris. After cleaning the unit, check that it is adequately lubricated (as described in Section 6.2, below). Before returning the printer to the customer, inspect the springs, paper-feed rollers, and basic operation.
REV.-A Table 6-2. Lubrication Points (Refer to Figure 6-2) Ref. No. Lubricant Lubrication Points 1 1/4 of the perimeter of the top edge of the gear (8.5 mm, 30 mm) G-26 2 1/3 of the perimeter of the top edge of the gear (40 mm) G-26 3 1/3 of the perimeter of the top edge of the platen gear G-26 4 Portion of carriage that contacts base frame G-26 5 Oil pad 6 Portion of platen shaft that contacts ground spring G-20 7 Gear (40 mm) shaft G-26 8 Gear (8.
REV.-A Figure 6-2.
REV.
REV.-B APPENDIX .. A.1 CONNECTOR SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 A.2 CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5 A.3 CIRCUIT BOARD COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1 2 .. 6 A.4 EXPLODED Diagram........ . . . . . . . . . .
REV.-B LIST OF TABLES Table A-1. . Board Connector Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2 Table A-2. CN2 BOARD ASSY., MAIN (C062 MAIN) . . . . . . . . . . . . . . . . . . . . . . . . . A-3 Table A-3. CN3 BOARD ASSY., MAIN (C062 MAIN). . . . . . . . . . . . . . . . . . . . . . . . . A-3 Table A-4. CN4 BOARD ASSY., MAIN (C062 MAIN). . . . . . . . . . . . . . . . . . . . . . . . . A-3 Table A-5. CN5 BOARD ASSY.
REV.-B A.1 CONNECTOR SUMMARY Figure A-1 illustrates the interconnection of the primary components. Table A-1 summarizes the functions and sizes of the connectors. 0 ‘1 BOARD ASSY., PANEL ~:06;D;NL Model 5E10/5E60 PRINTER MECHANISM GAP LEVER CRHOME PE-2 PE-I CR MOTOR PF MOTOR HEAD HEAD I I I ! I \ IY!?_.b I B O A R D ASSY,. MAIN (C062 MAIN BOARD) k+ CN 1 m CN2 f’ f’ BOARD ASSY., POWER SUPPLY (C062 PSB/ i PSE BOARD) I t 4 Optional I nterf ace Card I 1 t I AC IN I Figure A-1.
REV.-B Table A-1. Board Connector Summarv Board BOARD ASW., MAIN (C062 MAIN BOARD) Function Connector Pins CN 1 CN2 CN3 Parallel interface Optional interface card Control panel 36 36 CN4 MOTOR, CR 5 12 CN5 MOTOR, PF 5 CN6 Printhead 17 CN7 CN8 Printhead 15 2 DETECTOR ASSY., HP (HP sensor) DETECTOR ASSY., PE, REAR DETECTOR ASSY., PE, PRONT 2 CN9 CN 10 CN 11 DETECTOR ASSY., PLATEN CN 12 CN 13 DETECTOR ASSY., RELEASE DC power input BOARD ASSY.
REV.-B I Table A-2. CN2 BOARD ASSY., MAIN (C062 MAIN) Table A4. CN4 BOARD ASSY., MAIN (C062 MAIN) No. 1/0 1 2 - +5 +5 +5 VDC +5 VDC 3 4 - + 5 + 5 + 5 VDC 5 - + 5 6 - + 5 7 8 0 0 9 10 I - TXD /READY RXD 11 12 13 0 0 I 14 I /CMREQ /WRRDY 15 16 17 18 I 0 /RDREQ /WR 19 0 0 - 20 21 - /RD /cs GND GND 22 - 23 24 - 25 0 A3 26 27 0 0 A2 Al 28 29 0 1/0 AO D7 30 1/0 31 32 1/0 1/0 D6 D5 33 34 1/0 1/0 35 36 NC /RST INH GND GND GND GND No.
REV.-B I No. 1/0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 I 0 0 0 0 0 0 0 0 0 0 0 0 Signal Name HD3 HD 11 HD2 HD 19 HD7 COM COM COM HD22 HD 15 HD 18 HD23 HD 10 HD14 HD6 I 1 2- I I 1 2 1/0 1 2 3 4 5 6 7 8 9 10 11 0 - Signal Name Psc +5 +5 GND GND GND GND GND +35 +35 +35 Function Power switch signal +5 VDC + 5 VDC Signal ground Signal ground Signal ground Signal ground Signal ground +35 VDC +35 VDC +35 VDC CRHOME GND Function I I DETECTOR ASSY.
. ., .,,...,,, z v I II!, : o I t - b I JL ~ 1 I “w iW [ II . r -1 :-- j Rectlf Ler I Figure A-4. BOARD ASSY.
REV.-B “’T----- ,. :,, f. $3-L II I ‘c. II t 7 T T I I N w . 1 ‘f. I (C062 PSB Board) Circuit Diagram Figure A-5. BOARD ASSY., POWER A-8 >: ,.
; J m i Rectifier 1 Filter Figure A-6. BOARD ASSY.
REV.-B ,. ,,~,$,,, f.,,,,, I I ! -.. x. 1 t + 1 , t L < — ,4----- z . Figure A-7. BOARD ASSY., POWER SUPPLY (C062 PSE Board) Circuit Diagram A-1 O ..
REV.-B —-— 1— i ij i = -1 ‘1 * #p l-k ‘m I Uo I i-– \ z u Figure A-8. BOARD ASSY.
REV.-B ..; , f: A-3. CIRCUIT BOARD COMPONENT LAYOUT .--, t I I 1 1 1 9 1 I I I 1 1 1 1 1 .--1 1 1 1 t t 1 I I I 1 1 I 1 1 1 1 I I 1 1 i 1 1 I 1 I I a J --- 5 ;,p: ,. .., .g ,.. . ) OZJ 45+ ‘, I EIN3 ,,:,,Jy; ,,----1; Figure A-9. BOARD ASSY.
REV.-B C3 -11- —. C9 I - 1. ( “ Figure A-10. BOARD ASSY.
,c=.. ;,:, REV.-B .,--{, .,:’ L 1 I ASSY 2 0 0 2 8 5 0 0 0 Figure A-1 1. BOARD ASSY., POWER SUPPLY (C062 PSE Board) Component Layout A-1 4 ,.
REV.-B Zluo Zr Vlr alr — — — Figure A-1 2. BOARD ASSY.
Figure A-1 3. LQ-570 Exploded Diagram .
REV.
REV.-A Tahici . ““. Ref. No. A.1 A ., . . . . Part Nn. Rafermwxi Table . . . . . ---- Description 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 HOUSING ASSY., LOWER SHIELD PLATE, BOTTOM HOLDING PLATE, FFC GROUNDING PLATE, l/F COVER ASSY., PRINTER FRONT FRAME ASSY., SHEET GUIDE HOUSING ASSY.
REV.-A Table A-14. Part No. Reference Table (Cont.) Ref. No, 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 589 590 591 592 Ref. No, Description SPUR GEAR, 17 PAPER TENSION SPRING RETAINING RING TYPE-E(5) SHAFT, CR, GUIDE LEVER, G, ADJUST PULLEY, DRIVEN BELT PULLEY FLANGE SHAFT, DRIVEN, PULLEY PLAIN WASHER 3.2 XO.
REV.-A A.5 CASE OUTLINE DRAWING c . u“ I J b 1- . 368 m m -1I 151 m Figure A-1 7. LQ-570 Case Outline Drawing A-22 -q?., @ :: -. ,.,.
. I C-71 4 —------l I t- Ila u “’mm~ 151 m Figure A-1 8.
EPSON SEIKO EPSON CORPORATION PRINTER DIVISION EPSON OVERSEAS MARKETING LOCATIONS EPSON AMERICA, INC. 20770 Madrona Avenue Torrance CA 90503, U.S.A. Phone: (2 13) 782-0770 Fax: (213) 782-5248 EPSON DEUTSCHLAND GmbH Zulpicher Straf3e 6, 4000 Dusseldorf 11 F.R. Germany Phone: (02 1 1) 56030 Fax: (21 1) 504-7787 EPSON UK LTD. Campus 100, Maylands Ave, Hemel Hempstead, Hertfordshire, HP2 7EZ, U.K. Phone: 0422-61144 Fax: 0422-227227 EPSON FRANCE S. A.
,<” , \ EPSON Printed in Japan 91 .09-.
Addendum The AP5000 is mechanically and electronically the same as the LQ-570. The AP5500 is mechanically and electronically the same as the LQ-1070. All the information contained herein is equally applicable to both printers. With the exception of a few parts, all parts for the ActionPrinter 5000/5500 are identical to those for the LQ-570/1070. Refer to the parts price list (PL-LQ57AP5) for a list of the unique parts for the Epson ActionPrinter 5000/5500.
LQ-570/1070 ™ ActionPrinter 5000/5500 24-PIN DOT MATRIX PRINTERS TM-LQ57AP5
LQ-570/1070 SERVICE MANUAL EPSON @ Printed on Recycled Paper
NOTICE * All rights reserved. Reproduction of any part of this manual in any form whatsoever without SEIKO EPSON’s express written permission is forbidden. * The contents of this manual are subject to change without notice. * All efforts have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
REV.-A PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) personal injury, and 2) damage to equipment: DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by a DANGER heading. WARNING Signals a precaution which, if ignored, could result in damage to equipment.
REV.-B PREFACE This manual describes functions, theory of electrical and mechanical operations, maintenance, and repair of the LQ-570/1070. The instructions and procedures included herein are intended for the experienced repair technician, and attention should be given to the precautions on the preceding page. The chapters are organized as follows: Chapter 1 - Provides a general product overview, lists specifications, and illustrates the main components of the printer.
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REV.-A TABLE OF CONTENTS CHAPTER 1. CHAPTER 2. CHAPTER 3. CHAPTER 4. CHAPTER 5. CHAPTER 6.
REV.-B CHAPTER 1 GENERAL DESCRIPTION 1.1 FEATURES ................................................................................................. 1-1 1.2 SPECIFICATIONS ................................................................................... 1-3 1.2.1 Hardware Specifications ........................................................ 1-3 1.2.2 Firmware Specifications ......................................................... 1-9 1.3 INTERFACE OVERVIEW ..........................................
REV.-B LIST OF FIGURES Figure 1-1. Exterior V i e w of the L Q - 5 7 0 / 1 0 7 0 ................................. 1-2 Figure 1-2. Pin Configuration ................................................................... 1-3 Figure 1-3. Printable Area for Cut Sheets.. ......................................... 1-6 Figure 1-4. Printable Area for Continuous Sheets.. .......................... 1-6 Figure 1-5. Character Matrix ....................................................................
REV.-B 1.1 FEATURES The LQ-570/1070 are small, light-weight, low-cost, printers with advanced paper handling that is compatible with the LQ-510/550/1010.
REV.-B Table 1-2.
REV.-B 1.2 SPECIFICATIONS This section provides specifications for the LQ-570/1070 printer. 1.2.1 Hardware Specifications Printing method Serial, impact, dot matrix Pin configuration 24 wires (12 X 2 staggered, diameter 0.2 mm) Figure 1-2.
REV.-B l Use the paper tension unit. 0 Do not use multi-part cut-sheet forms, except with front insertion. 0 Do not perform reverse feeds greater than l/6 inch when using envelopes. 2. Push tractor feed (release lever in REAR PUSH POSITION). 0 Paper must be loaded from the rear entrance. 0 Release the friction-feed mechanism. 0 Multi-part forms must be spot pasted beyond the perforation between the tractor holes. 0 Paper for multiple copies must be carbonless multi-part paper.
REV.-B Table 1-4. Specifications for Cut Sheets (Carbonless Duplicating Paper) Width Length Thickness 182 mm to 2 16 (‘364) mm (7.2 in. to 8.5 (‘I 4.3) in.) 257 mm to 297 mm (10.1 in. to 11.7 in.) 0.065 mm to 0.14 mm (0.0025 in. to 0.0055 in.)-single sheet 0.12 mm to 0.32 mm (0.0047 in. to 0.012 in.)- total 17 lb to 24 lb (52.
REV.-B Printable area See figures 1-3, l-4, and l-5 148.257 mm (5 a-10 1”) top Insertlo” 146-257(*420)mm(56-101”1~16511 front ,nserf,on 162.257 mm 17 Z-10 1 ‘I 82 -257 (*364) mm (7 z-‘10 r,*14 3”)) Pramable area Max 203 2 mm (8 I” ) ; 1, 1, F AK 85mm (0 33”) 0‘ more I1 364mmil ( 14 3”) max II j*sc 135mm .-t-----b9 “m”or’, (*: 136 column) (80 column): l 1)3.0 mm (0.12 in.) or more when paper width is less than 229 mm (9 in.). 24 mm (0.9 in.)(top insertion)/26 mm (1 .O in.
REV.-B (80 column): * 1) 13 mm (0.5 1 in.) or more when a paper width of 101 mm (4 in.) to 24 1 mm (9.5 in.) is used. 24 mm (0.9 in.)(rear insertion)/ 26 mm (1.0 in.) (front/bottom insertion) or more when a paper width of 254 mm (10 in.) is used. (136 column): 13 mm (0.51 in.) or more using a paper width of 101 to 401.3 mm (4 to 15.8 in.). 15 mm (0.6 in.) or more using a paper width of 381 to 406 mm (15 to 16 in.). 13 mm (0.51 in.) (rear insertion) / 17 mm (0.67 in.
REV.-B 220 to 240 V version Input voltage range 220 to 240 VAC 198 to 264 VAC Rated frequency 50 to 60 Hz Input frequency 49.5 to 60.5 Hz Rated voltage Rated current 1.0 A Power consumption Approx. 33 W (during a self-test in draft mode, 10 cpi) Insulation resistance 10 megohms, minimum (at 500 VDC between AC line and chassis).
REV.-A 1.2.
REV.-B NOTES: High-speed draft is valid if the printer status is as follows: 0 High-speed draft is selected by DIP switch. l Emphasized character mode is not selected. 0 Condensed character mode is not selected. 0 Draft is selected. 0 No D/L (download) characters are sent to the printer. 0 The horizontal dot space of characters is not set. 0 No bit image is sent to the printer. 0 Super/subscript is not selected.
REV.-B Table 1-9. Printing (Bit Image Mode) Pins Bit Image Printing Mode Density (dpi) Printable Dots Printing Speed tips) 8 Single-density 60 480(*8 16) 2 1 .o 8 Dual-density 120 960(” 1632) 10.5 8 1 Double-speed, dual-density 8 Quadruple-density 8 8 24 I 120 I 960(‘1632) 2 1 .o I 240 1920(‘3264) 10.5 CRT graphics 80 640(‘ 1088) 10.5 CRT graphics II 90 720(‘1224) 14.0 Single-density 60 480(‘8 16) 21.0 24 / Dual-density I 120 I 960(* 1632) I 10.
REV.-A Table l-10. Character Matrix and Character Size LQ, proportional, condensed NOTES: 0 HDD is horizontal dot density in dots per inch. 0 Face matrix and character size indicate the size of the maximum character. This value is dependent on paper, ribbon, etc. 0 Unit ESC sp (which also can be sent as unit, followed by the character string CHR(&h20)), indicates the minimum length to be added to the right of the character specified with the ESC sp control code.
REV.
REV.-A 1.3 INTERFACE OVERVIEW The printer has a parallel interface with the specifications described below. 1.3.1 Parallel Interface Specifications for the 8-bit parallel interface are as follows: Data format 8-bit parallel Synchronization STROBE signal Handshaking BUSY and ACKNLG signal Signal level TTL-compatible Adaptable connector 57-30360 (Amphenol) or equivalent Data transmission timing See Figure l-6. BUSY ACKNLG DATA STROBE < 0.5/ls 0.5ps 0.59s min. min. min.
REV.-A Table l-l 1. Connector Pin Assignments and Signal Functions (Cont.) s a line feed upon input of the GND - - Ground for twisted-pair grounding. Not used. Always HIGH. (Pulled up to +5V through 3.3K ohm resistor.) OUT 36 SLCT-IN - DCl/DC3 control is disabled. IN NOTES: 1. “Dir.” indicates the direction of the signal flow as viewed from the printer. 2. “Return Pin No.” denotes a twisted-pair return line. 3. The cable used must be shielded to prevent noise. 4.
REV.-A 1.4 CONTROL PANEL On the control panel are: a power button (labeled OPERATE), 7 non-lock type buttons, and 19 indicators. Figure 1-7. Control Panel BUTTONS (1) OPERATE Button This button turns on the power supply to the printer. (2) PAUSE Button This button controls printer action. Pressing the button toggles the printer between PAUSE condition (no printing, no paper feeding, and not accepting data) and RUNNING.
REV.-A (7) FONT Button Pressing this button selects a font, and pressing it continuously selects the next one, sequentially. The FONT LED indicates the currently selected font. (8) CONDENSED Button Pressing this button toggles the printing mode between normal and condensed, alternatively. NOTE: Selections of the FONT and CONDENSED buttons are stored as defaults, so that the last FONT and the CONDENSED selection become effective when the printer is initialized.
REV.-A 1.5 DIP SWITCHES AND JUMPER SETTING This section describes the DIP switch selections and jumper setting for the LQ-570 printer. 1.5.1 DIP Switch Settings The two DIP switch banks for the printer, located on control panel, function as shown in tables l-l 2 through l-l 5. (Note that the status of the DIP switches is read only at power on or upon receipt of the INIT signal.) Table l-12. Settings for DIP Switch 1 (SWl) No.
REV.-A Table 1-14. International Character Set Selection 1-2 ON ON OFF OFF ON ON OFF OFF 1-3 PC Country ON U.S. OFF ON OFF ON OFF ON OFF France Germany U.K. Denmark 1 Sweden Italy Spain 1 437 850 860 863 865 ‘437 437 437 ---I- When SW l-4 is OFF, If graphic table was selected by ESC t 1, PC becomes 437. When SW 1-4 is ON, if italic table was selected by ESC t 0, country setting becomes U.S. Table l-l 5. Page Length 2-l 2-2 OFF ON OFF ON OFF OFF ON ON Page Length 11 inches 12 inches 8.
REV.-A 1.6 OPERATING INSTRUCTIONS This section describes the self-test and hexadecimal dump functions and also includes the error states, printer initialization, and buzzer operation. 1.6.1 Self-Test To run the self-test using draft mode, turn the printer on while pressing the LOAD/EJECT button. To run the self-test using the letter quality (LQ) mode, turn the printer on while pressing the LINE FEED/FORM FEED button. You can stop or start self-test printing by pressing the PAUSE button.
REV.-A 1.6.3 Paper-out Detection and Forms Override Function When the paper-out detector, attached to the printer mechanism, detects a paper-end, the printer first performs a forms override. If paper loading fails, the BUSY signal goes HIGH, the PAPER OUT indicator is lit, the interface PE signal becomes HIGH, the ERROR signal becomes LOW, and the printer enters the PAUSE condition automatically. By ignoring the paper out, the printer can print additional lines after the paper out is detected.
REV.-A (a) Initializes printer mechanism. (b) Clears input data buffer. (c) Clears downloaded character set. (d) Clears print buffer. (e) Returns printer settings to their default values. (2) Software initialization Input of the ESC @ command also initializes the printer. Printer initialization by ESC @ code does not perform functions (a), (b), and (c) above. The settings changed by the last SelecType operation are maintained.
REV.-A Automatic cut-sheet loading and ejection with cut-sheet feeder Move the release lever to the friction-feed position, and place the sheets into the hopper of the cut-sheet feeder. Pressing the LOAD/EJECT button loads one sheet to the top-of-form position. If a paper-out is detected before printing starts, a sheet will again be loaded automatically to the top-of-form position.
REV.-B Short-tear-off To access the short-tear-off function, press the TEAR-OFF button. The release lever must be in the tractor position. The paper advances to the tear-off position whether the printer is in PAUSE or RUNNING condition. At this time, the TEAR-OFF LED lights to indicate that you can use the LOAD/EJECT and LINE FEED/FORM FEED buttons, in conjunction with the ALT button, for backward and forward micro feed adjustment. Using micro feed, adjust the paper to meet the tear-off edge.
REV.-A 1.6.11 Printer Protection for Heavy-Duty Printing This printer has a printhead protection function to prevent it from overheating and to protect the printer when the head driver voltage drops. If head temperature exceeds its maximum value, printing stops automatically until the head temperature drops to a certain value before printing resumes. Printing resumes at a lower print speed at first. However, as the head temperature decreases, print speed increases to normal speed automatically.
REV.-B 1.7 MAIN COMPONENTS The main components of the LQ-570/1070 printers are designed for easy removal and replacement to maintain and repair the printer. The main components are: 1) CO62 MAIN board: the main control board; the CPU on this board controls all main functions. 2) CO62 PNL board: the control panel board. 3) CO62 PSB/PSE board: the power supply board. 4) M-5El0/5E60: the printer mechanism.
REV.-B 1.7.2 C062 PNL Board (Control Panel Circuit Board) The CO62 PNL board is the LQ-570/1 070 control panel, which includes the indicator LEDs, switches, and DIP switches. Figure 1-13. CO62 PNL Board 1.7.3 C062 PSB/PSE Board (Power Supply Circuit Board) The power supply unit consists of a switching regulator circuit, which converts the AC line voltage to the DC voltages (for example, + 35V and + 5V) used by the printer.
REV.-B 1.7.4 Printer Mechanism (M-5E10/M-5E60) The M-5ElO/M-5E60 printer mechanism was developed specifically for use with LQ-570/1070 printer. The components include a carriage motor, carriage mechanism, paper-feed motor, paper-feed mechanism, ribbon-feed mechanism, printhead, and sensors. This printer mechanism allows three ways of paper insertion. This picture shows an 80-column Printer. T h e M-5ElO a n d M-5E60 differ in width only. I Figure l-15. Model-5El0/5E60 Printer Mechanism 1.7.
REV.-B CHAPTER 2 OPERATION PRINCIPLES 2.1 OVERVIEW OF PRINTER M E C H A N I S M OPERATION.. ............. 2-1 2.1.1 Printhead Mechanism .............................................................. 2-1 2.1.2 Carriage Movement Mechanism.. ........................................ 2-2 2.1.3 Paper Feed Mechanism.. ......................................................... 2-3 2.1.3.1 Paper Advance Mechanisms.. .................................... 2-3 2.1.3.2 Paper Insertion Entrances ......................
REV.-B Figure 2-12. Paper Path for Bottom Entrance Pull Tractor Feed ... 2-8 Figure 2-13. Paper Path for Front Entrance Friction Feed.. ............. 2-9 Figure 2-14. Paper Path for Front Entrance Pull Tractor Feed ....... 2-9 Figure 2-15. Ribbon Advance Mechanism.. ............................................ 2-10 Figure 2-16. Power Supply Circuit Block Diagram ............................. 2-12 Figure 2-17. Control Circuit Block Diagram.. ........................................ 2-13 Figure 2-18.
REV.-B 2.1 OVERVIEW OF PRINTER MECHANISM OPERATION This section describes the PRINTER MECHANISM of the Model-5ElOI5E60 printer unit how the printer works. The Model-5El0/5E60 has a PRINTER MECHANISM that features a dot printhead for serial printing. There are four main parts to the printer mechanism: 1) mechanism, 2) the carriage movement mechanism, 3) the paper advance mechanism, and advance mechanism. Each of these is described below. and explains 24-pin impact the printhead 4) the ribbon 2.1.
REV.-B 2.1.2 Carriage Movement Mechanism A timing belt is connected to the carriage on the lower side. With the printhead installed, this carriage moves in either direction along the SHAFT, CR, GUIDE. The carriage is driven by the MOTOR, CR a stepping motor that drives the TIMING BELT via the BELT PULLEY. The DETECTOR ASSY., HP DETECTS when the carriage is in the home position. Left SHAFT, CR, GUIDE BELT PULLEY Figure 2-2.
REV.-B 2.1.3 Paper Feed Mechanism Cut sheet paper is advanced by friction feed. Continuous form paper is advanced using a tractor feed mechanism. There are three ways to advance the paper with tractor feed: using the push tractor, using the pull tractor, and using the push and pull tractors together. Any one of these three tractor configurations can feed paper through the printer.
REV.-B Push Tractor Method When the push tractor is selected, the SPUR GEAR, 16 engages the SPUR GEAR, 17 (Tractor gear) on the TRACTOR ASSY. COMBINATION GEAR, 8.5, 30 is driven by the paper-feed gear, which in turn is driven by the paper-feed motor pinion gear. The paper-feed pinion gear, when turning in the direction of the black arrow, results in pushing the paper through the mechanism. I During tractor feeding, the LEVER, G, ADJUST is set to the tractor position to disengage the friction drive.
REV.-B Pull Tractor Method Using pull tractor feed to advance the paper is basically the same as using push tractor feed. In push tractor feed, the TRACTOR ASSY. (paper advance mechanism) is before the paper entrance. It pushes the paper through the PRINTER MECHANISM. Pull tractor feed, however, has the opposite arrangement, with the tractor situated after the paper entrance. Since it pulls the paper through the PRINTER MECHANISM, it requires no paper tension unit.
REV.-B The LEVER, RELEASE switches between friction feed and tractor feed. Setting the LEVER, RELEASE to the friction feed position presses the paper advance roller against the PLATEN. Setting the release lever to the tractor feed position releases this pressure, so that the paper advance roller separates from the PLATEN. The DETECTOR ASSY., RELEASE senses the current position of the LEVER, RELEASE. n 2 &LEVER, RELEASE GUIDE RELEASE Paper-Feed Roller Figure 2-8. LEVER, RELEASE Movement 2.1.3.
REV.-B Rear entrance paper insertion When you feed paper into the printer through the rear entrance, the method to advance the paper can be: the push tractor, or the push-pull tractor. The rear paper-out detector senses when the paper- has run out. Paper (Continuous) ROLLER ASSY., PAPER EJECT \ / \ Printhead PAPER GUIDE TRACTOR ASSY. DETECTOR ASSY., Paper Feed Roller Figure 2-10. Paper Path for Rear Entrance Push Tractor Feed Paper Feed Roller Figure 2-l 1.
REV.-B Bottom entrance paper insertion When you feed paper into the printer through the bottom entrance, the pull tractor advances the paper. The front paper-out detector senses when the paper runs out. Paper (Continuous TRACTOR ASSY. Paper Feed Roller DETECTOR ASSY., PE, FRONT From Bottom Insertion Figure 2-12.
REV.-B Front entrance paper insertion When you feed paper into the printer through the front entrance, the paper can be advanced either with friction feed or the pull tractor. The front paper-out detector senses when the paper runs out. ROLLER ASSY., PAPER EJECT PF Drive Roller DETECTOR ASSY., PE, FRONT From Front Insertion Figure 2-13. Paper Path for Front Entrance Friction Feed Paper (Continuous) TRACTOR ASSY. DETECTOR ASSY., PE, FRONT \ \ From Front Insertion Figure 2-14.
REV.-B 2.1.4 Ribbon Advance Mechanism The ribbon drive gear advances the ribbon through a gear linkage. This arrangement of gears makes the ribbon drive gear always rotate in a counterclockwise direction, regardless of the direction the carriage is moving. Table 2-2.
REV.-B 2.2 POWER SUPPLY OPERATION The printer can be powered by either of two power supply boards: the 120 V CO62 PSB board or the 2201240 V CO62 PSE board. The only difference in the way these two boards operate is in the primary circuitry. How they work to supply power to the printer is identical. These power boards output the DC current necessary to drive the printer control circuits and printer drive mechanism. Table 2-3 shows the input voltages and fuse ratings for these boards. Table 2-3.
REV.-A Second, there are four circuits to protect the supply circuitry and avoid danger. The +5 VDC line contains a current overload protection circuit and a voltage overload protection circuit. The current overload protection circuit is part of the +5 VDC supply circuit. It cuts the +5 VDC line if the current is too great. The +5 V voltage overload protection circuit cuts the supply if the voltage reaches or exceeds +7 VDC.
REV.-B 2.3 CONTROL CIRCUIT OPERATION The control circuit consists of two boards: the C062 MAIN board, which acts as the main board, and the C062 PNL board, which acts as the control panel board. This section describes how these boards work. 2.3.1 Control Circuit Operation Overview The printer CPU is an 8-bit CPU TMP90C04 1 running at 10 MHz. It oversees control of all the components of the printer.
REV.-B Table 2-5 lists the functions of the main components and circuits of the printer. The CPU converts the print data sent from the host computer to image data (the print image). The image data is then loaded to RAM. Each line of data is processed sequentially. The CPU transfers the print data to the printhead drive circuit. The CPU sends the printhead drive pulse to the printhead drive circuit. The length of this pulse corresponds to the printhead drive voltage.
REV.-B Table 2-5. Functions of the Main IC and Circuits (Cont.) IC or Circuit STK-6022B Location Functions This is a single chip that houses drive circuits for the printhead, MOTORCR and MOTOR, PF of the PRINTER MECHANISM. The chip also includes the 2A various sensor input circuits for the PRINTER MECHANISM. PROM 5E PROM contains the program that runs the CPU. RAM 6E 1E Holds the CPU working area and the various buffers. (1 E is not used for an 80-column device and is not installed.
REV.-A Power On CPU Self Reset $ 4 +5 V Line VCCON -I DISC u THLD RESET Figure 2-20. RESET Signal Timing 2.3.3 Sensor Circuits Figure 2-21 shows the sensor circuits in block diagram form. Detection of any excessive printhead temperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, such as the CRHOME signal, pass through the STK-6022B unit before reaching the CPU. Terminals P50 to P55 on the CPU are used for the A/D convertor.
REV.-B I 2.3.4 MOTOR, CR Drive Circuit Figure 2-22 shows the MOTOR, CR drive circuit. An open-loop, constant-current drive arrangement is used for running the MOTOR, CR. The motor is driven by 2.2 phase excitation and l-2 phase excitation. I 2-2 phase excitation corresponds to two l-2 phase excitation steps. Thus, for each single step phase change of a 2-2 phase excitation motor, the carriage moves l/l 20 inch.
REV.-B I 2.3.5 MOTOR, PF Drive Circuit The printer uses a stepping motor to advance the paper. The minimum amount of paper that can be advanced is l/360 inch. The motor is a 2-2 phase or l-2 phase, constant-voltage drive type. P70 to l P73 on the CPU are the control ports for the stepping motor. MOTOR, PF phase data is output through these ports. PFA to PFD are turned on and off within the STK-6022B according to this phase data sent from the CPU.
REV.-A 2.3.6 Printhead Drive Circuit Figure 2-24 shows the printhead drive circuit in block diagram form. The print data already has been expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the STK-6022B’. The CPU samples the voltage of the +35 V line via the A/D convertor (see Section 2.3.3). The CPU outputs a pulse via the CPU time output port P83. The length of this pulse corresponds to the voltage of the + 35 V line.
REV.-A 2.3.7 Parallel Interface Circuit Figure 2-26 shows the parallel interface circuit in block diagram form. The data sent from the host computer is latched within E05A50 by the STROBE signal. E05A50 outputs the BUSY signal automatically to stop the host computer from sending the next data and then outputs the IBF signal for the CPU.
REV.-B CHAPTER 3 DISASSEMBLY AND ASSEMBLY 3.1 OVERVIEW ................................................................................................ 3-1 Precautions for Disassembling the Printer.. .................... 3-1 3.1.1 3.1.2 Tools .............................................................................................. 3-1 3.1.3 Service Checks After Repair ................................................. 3-2 3.1.4 Specifications for Screws ...............................................
REV.-B LIST OF FIGURES Figure 3-1. Flowchart for Disassembling the Printer . . . . . . . . . . . . . . . . . . . . . . 3-4 Figure 3.2. Removing the Printer Cover and the Paper Eject Cover .......................................................... 3-5 Figure 3.3. Removing the Printhead.. .................................................... 3-5 Figure 3.4. Removing the HOUSING, FRONT.. ................................... 3-6 Figure 3.5. Removing the Cover for the Optional Interface Card ............
REV.-A 3.1 OVERVIEW This section describes the various points to note when disassembling and assembling the printer. 3.1.1 Precautions for Disassembling the Printer Follow the precautions below when disassembling the printer. WARNING Before disassembling, assembling, or adjusting the printer, disconnect the power supply cable from the external AC power socket. Failure to do so risks personal injury. The power supply switch for the printer is wired into the secondary circuitry.
REV.-A 3.1.3 Service Checks After Repair When printer components are to be sent back to the customer after servicing, use the checklist shown in Table 33 to note the current state of the components. This checklist provides a record to make servicing and shipping more efficient. Table 3-3.
REV.-A 3.1.4 Specifications for Screws In the following sections, abbreviations are used for small parts, such as screws and washers. Tables 3-4 and 3-5 list these abbreviations. Table 3-4. Abbreviations Used for Screws Part Name Abbreviation CBS(C) Cross-recessed Cross-recessed Cross-recessed Cross-recessed CBB(C) CB CBS(O) Bind head Cone point S tight screw Bind head Cone point B tight screw Bind head screw Bind head S tight with screw with Outside toothed lock washer Table 3-5.
REV.-A 3.2 DISASSEMBLY AND ASSEMBLY This section describes the procedures for disassembling and assembling the main components of the printer. When the procedure for installing a component into the printer is simply the reverse of the procedure for removing the component, no description of how to install the component is given. Any points of special concern when assembling or adjusting a component part are given after the description of the procedure. It is important to take note of these points.
REV.-B 3.2.1 Changing the Printhead 1. Remove the FRAME ASSY., SHEET GUIDE. 2. Remove the COVER ASSY., EJECT. FRAME ASSY., SHEET GUIDE COVER ASSY., EJECT (This illustration shows the LQ-570, an 80column printer. The difference between the LQ-570 and LQ-1070 is in carriage width only.) Figure 3-2. Removing the FRAME ASSY., SHEET GUIDE and the COVER ASSY., EJECT 3. Release the two levers that hold the printhead to the carriage. Lift out the printhead. 4.
REV.-B 3.2.2 Removing the Printer Case This section describes how to remove the front case and HOUSING ASSY., UPPER. 3.2.2.1 Removing the HOUSING, FRONT 1. Remove the COVER ASSY., PRINTER, FRONT. 2. Remove the HOUSING, FRONT. 3. Use a screwdriver to release the clips that hold the front case to the HOUSING ASSY., UPPER. Open the HOUSING, FRONT. Remove connector CN 1 on the BOARD ASSY., PANEL (CO62 PNL). Remove the HOUSING, FRONT. (This illustration shows the LQ-570, an 80column printer.) Figure 3-4.
REV.-B 3.2.3 Removing the Circuit Boards This section describes how to remove the BOARD ASSY., MAIN (CO62 MAIN board), the BOARD ASSY., POWER SUPPLY (CO62 PSB/PSE board) and the BOARD ASSY., PANEL (CO62 PNL board). 3.2.3.1 Removing the BOARD ASSY., MAIN (C062 MAIN Board) 1. Remove the HOUSING ASSY.,UPPER (see Section 3.2.2.2). 2. Remove the CB (M3X6) screws that hold the HOLDING PLATE, FFC to the SHIELD PLATE, MAIN BOARD . Remove the HOLDING PLATE, FFC. 3.
REV.-B Point to Note for Assembly and Adjustment After replacing the BOARD ASSY., MAIN, you must adjust the bidirectional print position again to ensure bidirectional printing is correctly aligned (see Section 4.2). 3.2.3.2 Removing the BOARD ASSY., POWER SUPPLY (C062 PSB/PSE Board) 1. Remove the HOUSING ASSY., UPPER (see Section 3.2.2.2). 2. Remove the cable for connector CN 13 from the BOARD ASSY., MAIN. 3. Remove the cable for connector CNI from the BOARD ASSY., POWER SUPPLY. 4.
REV.-B 3.2.4 Removing the PRINTER MECHANISM 1. Remove the HOUSING ASSY., UPPER (see Section 3.2.2.2). 2. Remove the CB (M3X6) screws that attach the HOLDING PLATE., FFC to the SHIELD PLATE, MAIN BOARD. Remove the HOLDING PLATE,FFC. 3. Disconnect the 2 FFCs(CABLE, HEAD, FRONT(,REAR)) from the CN6 and CN7 connectors on the BORAD ASSY., MAIN. Remove the cables for the following BOARD ASSY.
REV.-B 3.2.5 Disassembling the PRINTER MECHANISM This section describes how to disassemble the main components of the PRINTER MECHANISM. 3.2.5.1 Removing the MOTOR, CR 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the printer spring (778 gm) from the base frame and the MOTOR, CR frame. 3. Remove the TIMING BELT from the BELT PULLEY. 4. Remove the MOTOR, CR frame from the HOUSING ASSY., LOWER. 5.
REV.-B 3.2.5.2 Removing the MOTOR, PF 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the COMPRESSION SPRING, 200 that holds the platen shaft. 3. Release the two clips holding the MOTOR, PF to the FRAME, MAIN, RIGHT. 4. Remove the MOTOR, PF from the FRAME, MAIN, RIGHT. FRAME, MAIN, RIGHT MOTOR, PF Figure 3-12. Removing the MOTOR, PF Point to Note for Assembly See Section 3.2.5.13 for details on arranging and positioning the motor cable. 3.2.5.
REV.-B 3.2.5.4 Removing the Carriage 1. Remove the FFC (CABLE, HEAD, FRONT (,REAR)) (see Section 3.2.5.3). 2. Remove the TIMING BELT from the carriage. 3. Use the box driver to rotate and free the adjusting bushing. This bushing holds the SHAFT, CR, GUIDE to the FRAME, MAIN, RIGHT. Remove the bushing. 4. Remove the carriage unit together with the SHAFT, CR, GUIDE by pulling the SHAFT, CR, GUIDE a little to the right. Adjusting Bushing Figure 3-14.
REV.-B 3.2.5.5 Removing the PLATEN 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the two CBP(C) (M3X 10) screws that hold the COVER, PLATEN, LOWER to the left and FRAME, MAIN, RIGHT. Remove the COVER, PLATEN, LOWER. 3. Remove the COMPRESSION SPRING, 200 that holds the platen shaft (see Section 3.2.5.2, step 2). 4. Set the head LEVER, G, ADJUST to the most forward position. 5. Remove the two clips that hold the LEVER, RELEASE to the platen shaft.
REV.-B 3.2.5.6 Removing and Disassembling the FRAME, MAIN, RIGHT 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the PLATEN from the PRINTER MECHANISM (see Section 3.2.5.5). 3. Remove the MOTOR, CR from the FRAME, MAIN, BASE (see Section 3.2.5.1). 4. Remove the two CBS(C)(P) (M3 X 10) screws that hold the FRAME, MAIN, RIGHT to the FRAME, MAIN, BASE. Remove the FRAME, MAIN, RIGHT from the FRAME, MAIN, BASE. 5.
REV.-B 3.2.5.7 Removing and Disassembling the PAPER GUIDE (Including the DETECTOR ASSY., HP) 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the PLATEN from the PRINTER MECHANISM (see Section 3.2.5.5). 3. Remove the FRAME, MAIN, RIGHT from the FRAME, MAIN, BASE (see Section 3.2.5.6). 4. Remove the three springs (32 gm) from the lower side of the PRINTER MECHANISM (These springs join the PAPER GUIDE support to the FRAME, MAIN, BASE.) 5.
REV.-B I 3. While holding down the three PF lever assemblies, pull out and remove the release shaft. Remove the PF lever assemblies and the compression spring (1300 gm) from the paper guide. 10. While holding open the clips that secure the DETECTOR ASSY., RELEASE to the PAPER GUIDE, remove the DETECTOR ASSY., RELEASE. LEVER ASSY., PF (This illustration shows the LQ-570, an 80column printer. The 136-column printer has four paper advance rollers and four springs.
REV.-B 3.2.5.8 Removing the DETECTOR ASSY., HP 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the clips from the rear side of the FRAME, MAIN, BASE that hold the DETECTOR ASSY., HP. Remove the DETECTOR ASSY., HP from the rear of the FRAME, MAIN, BASE. Figure 3-23. Removing the DETECTOR ASSY., HP 3.2.5.9 Removing the DETECTOR ASSY., PE, REAR 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2.
REV.-B 3.2.5.10 Removing the DETECTOR ASSY., PE, FRONT 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Open the clips that hold the DETECTOR ASSY., PE, FRONT to the FRAME, MAIN, BASE. Remove the DETECTOR ASSY., PE, FRONT. DETECTOR ASSY., PE, FRONT FRAME, MAIN, ‘BASE I Figure 3-25. Removing the DETECTOR ASSY., PE, FRONT 3.2.5.11 Removing the DETECTOR ASSY., PLATEN 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2.
REV.-B 3.2.5.12 Disassembling the TRACTOR ASSY. 1. Remove the TRACTOR ASSY. from the printer. 2. Remove the SPUR GEAR, 17 from the SHAFT, TRACTOR. 3. Remove the FRAME, TRACTOR, RIGHT from the SHAFT, TRACTOR and the SHAFT, TRACTOR, GUIDE. 4. Remove RETAINING RING from the SHAFT, TRACTOR. 5. Remove the TRACTOR ASSEMBLY (RIGHT), the PAPER SUPPORT unit, and the TRACTOR ASSEMBLY (LEFT) froin the SHAFT, TRACTOR and SHAFT, TRACTOR, GUIDE.
REV.-B 3.2.5.13 Arranging the Cables Figure 3-28 shows how the cables are arranged for the PRINTER MECHANISM. When assembling the printer, make sure that the cables are laid out as shown in this figure. PRINTER MECHANISM (Bottom) (This illustration shows the LQ-570, an 80-column printer.) Figure 3-28.
REV.-B CHAPTER 4 ADJUSTMENTS 4.1 ADJUSTING THE PRINTER M E C H A N I S M ...................................... 4-1 4.1.1 MOTOR, CR Backlash Adjustment.. ....................................... 4-1 4.1.2 Platen Gap Adjustment .............................................................. 4-2 4.2 BIDIRECTIONAL PRINT POSITION ADJUSTMENT.. ................... 4-4 4.2.1 Overview of Bidirectional Print Position Adjustment ...... 4-4 4.2.2 Bidirectional Print Position Adjustment Procedure .......... 4-4 4.
REV.-B 4.1 ADJUSTING THE PRINTER MECHANISM This section describes the various adjustments you may need to make to the PRINTER MECHANISM. 4.1.1 MOTOR, CR Backlash Adjustment In the MOTOR, CR backlash adjustment, the pinion gear of the MOTOR, CR is meshed smoothly with the BELT PULLEY cog. If the pinion gear is poorly aligned, printer operation becomes noisy, and the accuracy of character alignment during printing suffers. 1. Remove the MOTOR, CR, along with the FRAME ASSY.
REV.-B 4.1.2 Platen Gap Adjustment If you have rotated or reassembled the SHAFT, CR, GUIDE or the adjusting bushing, or if printing is I abnormal, you must adjust the gap between the PLATEN and the printhead. 1 1. Remove the PRINTER MECHANISM from the HOUSING ASSY., LOWER (see Section 3.2.4). 2. Remove the printhead from the carriage (see Section 3.2.1). 1 3. Use tweezers to remove the RIBBON MASK from the carriage. RIBBON MASK Carriage Figure 4-2. Removing the RIBBON MASK 4.
REV.-B 9. Rotate the adjusting bushing until the platen gap is large enough for a thickness gauge of 0.44 mm thickness but too narrow for one of 0.47 mm thickness. 0.45 mm .I /- PLATEN Printhead f/ Figure 4-4. Platen Gap 10. Move the carriage until the edge of the printhead is at the 75th column print position. 1 1. Use the box driver (7 mm) to rotate the adjusting bushing on the FRAME, MAIN, RIGHT of the PRINTER MECHANISM. 12.
REV.-B 4.2 BIDIRECTIONAL PRINT POSITION ADJUSTMENT This section describes how to adjust the bidirectional print position to ensure correct printing alignment. 4.2.1 Overview of Bidirectional Print Position Adjustment This printer prints characters when the carriage is moving in either direction (i.e., from left to right or from right to left). Adjustment is necessary to ensure that the printing of characters in one direction is properly aligned with the printing of characters in the opposite direction.
REV.-A Are the characters aligned vertically? NO -+ GO TO STEP 3. YES - GO TO STEP 4. 3. Referring the odd-numbered lines (1st and 3rd), adjust the even-numbered lines (2nd and 4th). * If the even-numbered lines are shifted to the right: + Press the LOAD/EJECT button once while pressing the ALT button. (The reference value increases + 1 and even lines shift to the left.) l If the even-numbered lines are shifted to the left: --f Press the LF/FF button once while pressing the ALT button.
REV.-B 4.3 CIRCUIT ADJUSTMENT 1 The BOARD ASSY., MAIN (C062 MAIN BOARD) contains variable resistor VR1, which is used for balancing the circuitry. When any of the following parts are replaced, the circuitry must be balanced again by adjusting this variable resistance: R14, R15, R13, C8, and VRl If the circuitry is not correctly balanced in this way, the CPU A/D converter fails to function normally and printer operation is affected. 4.3.
REV.-B CHAPTER 5 TROUBLESHOOTING 5.1 OVERVIEW ................................................................................................ 5-1 5.2 REPAIR BY UNIT REPLACEMENT.. .................................................. 5-2 5.3 REPAIR OF THE BOARD ASSY., MAIN (C062 MAIN BOARD) ........................................................................... 5-14 5.4 REPAIR OF THE PRINTER MECHANISM.. ..................................... 5-17 LIST OF FIGURES Figure 5-1. Troubleshooting Procedure ..
REV.-B 5.1 OVERVIEW Problems in the printer may exhibit a variety of symptoms, which can complicate the task of troubleshooting, unless you follow the procedure shown in the flowchart below. r Repair of the printer mechanism Repair of the BOARD ASSY., MAIN I I Figure 5-1. Troubleshooting Procedure The following tables provide troubleshooting information. Table 5-1. Motor and Printhead Coil Resistance I Part Specifications I I MOTOR, CR I Co11 resistance 19.
REV.-B 5.2 REPAIR BY UNIT REPLACEMENT For most problems, it is sufficient for you to determine the difficulty to the unit level. Refer to Table 5-3, identify what the problem is, then perform the checks according to the corresponding flowchart. Table 5-3. Symptoms and Reference Pages See Page Problem Symptom 5-3 Printer fails to operate when power is on. . Carriage does not move. Carriage operation is abnormal. . Carriage moves away from home position at power .
REV.-B (1) Printer Fails to Operate when Power is On fuse Fl on the Power Supply board Yes from the Power Supply board. I No / output voltage I 1 Yes fault corrected? Replace the PRINTER MECHANISM. END * 5-3 Replace the BOARD ASSY., POWER SUPPLY.
REV.-B (2) Carriage Operation is Abnormal CN4,CN5,CN6, a n d C N 7 connecting the BOARD ASSY., MAIN and the PRINTER Secure connectors. Yes fault corrected? END * I < Refer to section 5.5. Repair of the PRINTER MECHANISM. the fault corrected? Replace the BOARD ASSY., MAIN.
REV.-B (3) Printing is Faulty During Self-Test, but Carriage Operation is Normal Set the head LEVER,G, ADJUST to the 2nd position, and perform self-test. and the PRINTER MECHANISM. inserted securely? Perform bidirectional printing adjustment. Reinsert them correctly. t h e f a u l t corrected? Replace the printhead ASSY.,MAIN.
REV.-A Check printhead resistance. Yes Replace pluggable chips. Yes Replace printhead. Replace printhead and logic PCB.
REV.-A No Replace printhead and PH cable. Yes -5 < Perform final test.
REV.-A X20 #40 X60 X80 0 #l 0 113 0 #5 0 #7 0 II9 0 #I1 0 113 0 it15 0 #17 0 #19 #240 0 #21 0 #23 < Wire Assignment ) #6 TEhPi t4 #lo #8 ( Terminal #18 822 116 Xc #7 - - - C O M . #I9 #it Coil Resistance: 45.5 k3.2 L1 at 25°C (Between each dot wire and commdn.) #21 113 r5 Assignment > Figure 5-2.
REV.-B (4) Paper Feeding is Abnormal (but Printing is Normal) paper loaded correctly? Refer to section 5.5, Repair of the PRINTER MECHANISM. Replace the BOARD ASSY., MAIN. ‘APER P F .eiYstIIce ,Replace the % Bo~R1_“;y; fault corrected? Refer to section 5.5, Repair of the PRINTER MECHANISM. 5-9 Replace the BOARD ASSY., MAIN and the MOTOR, PF.
REV.-A Check motor resistance. No Check drivers. Yes Replace defective Replace logic PCB. NOTE < Replace motor and main logic board. NOTE No Chec!< motor resistance. Perform final test. No _ Replace motor and I/O cable. NOTE Yes Perform final test. NOTE : Perform bidirectional print alignment adjustment.
REV.-B Clean or replace. Check lefl and right tractor assemblies for proper phasing. No Adjust phasin rw..#...l.rr+ “Ime Inspect paper path. ‘ 4 Perform final test.
REV.-B (5) Control Panel Operation is Abnormal No fault corrected? Yes No self-test executed 1 Replace the BOARD ASSY., MAIN. fault corrected? Replace the BOARD ASSY., PANEL.
REV.-B (6) Printing of Data Sent by the Host Computer is Faulty NOTE: It is assumed here that the host computer is operating normally. START Perform self-test printing. Is self-test printing normal? Refer to other troubleshooting items. Replace the connection cable from the host computer.
REV.-B 5.3 REPAIR OF THE MAIN BOARD This section provides instructions for repairing the BOARD ASSY., MAIN when it is defective and describes various symptoms, likely causes, and checkpoints. Checkpoints refer to proper waveforms, resistance values, and other values to be checked to evaluate the operation of any component that might be bad. Check these values and take the appropriate action. Table 5-4. Repair of a Problem’in the BOARD ASSY., MAIN Problem The printer does not operate at all.
REV.-B I Table 5-4. Repair of a Problem in the BOARD ASSY., MAIN (Cont.) Problem The printer does not operate at all. The carriage operates abnormally. Symptom Cause The CPU does not operate. Either ROM or RAM is defective. The carriage does not operate at all. Replace IC5E Dr IC6E. The CPU is defective. Check the oscillator signal at either pin 33 or pin 34 of the CPU. If a signal is detected, replace IC 1 C. Otherwise, replace CR 1. IClC is defective.
REV.-B Table 5-4. Repair of a Problem in the BOARD ASSY., MAIN (Cont.) Checkpoint Solution Problem Symptom Cause Self-test printing is abnormal. Self-test is not executed. The CPU can’t measure the voltage on the +35V line. Measure the voltage at Vref (pin 1) of Adjust VRl. ICIC. The normal voltage is 4.741 V. IC4D is defective. At IC4D, check the input signal at pin 101 and the output signal at pin 46. I 2v I I II Replace IC4D. I 14 L+L* 2v 0.2ms A particular dot is not being printed.
REV.-B 5.4 REPAIR OF THE PRINTER MECHANISM For detailed procedures for replacing or adjusting parts, refer to Chapter 3, Disassembly and Assembly, and Chapter 4, Adjustment. If a problem or symptom recurs following an attempted repair, refer to Table 5-5 to try to find other potential causes. I Table 5-5. Repair of the PRINTER MECHANISM Problem The MOTOR, CR fails to operate. Symptom The MOTOR, CR completely fails to activate at power on.
REV.-B Table 5-5. Repair of the PRINTER MECHANISM (Cont.) Problem Self-test printing is abnormal. Symptom A particular dot fails to print. The printing is too light, or the print density is not uniform. Paper feeding is abnormal. Printing is performed, but the paper is not fed, or is not fed uniformly. Cause Checkpoint Solution Measure the coil resistance of the printhead. The normal value is approximately 45.5 ohms. Replace the printhead. Check whether the dot wire is worn.
REV.-B I Table 5-5. Repair of the PRINTER MECHANISM (Cont.) Problem The ribbon feed is abnormal. Paper becomes stained. Cause Checkpoint Solution The ribbon cartridge is defective. Dismount the ribbon cartridge, rotate its knob manually, and check whether the ribbon feeds normally. Replace the ribbon cartridge. Foreign substances are caught in the gears. Check whether the ribbon driving gear rotates when the carriage is moved manually. - Remove any foreign substance.
REV.-B CHAPTER 6 MAINTENANCE 6.1 PREVENTIVE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.2 LUBRICATION A N D ADHESIVE APPLICATION . . . . . . . . . . . . . . . . . . 6-1 LIST OF FIGURES Figure 6-1. Correct Adhesive Application .................................................. 6-2 Figure 6-2. LQ-570 Lubrication Points.. ...................................................... 6-3 Figure 6-3. LQ-1070 Lubrication Points ............................................
REV.-B 6.1 PREVENTIVE MAINTENANCE Preventive maintenance includes regular cleaning of the case exterior (using denatured alcohol), as well as occasional vacuuming of the mechanism’s interior to remove dust and paper debris. After cleaning the unit, check that it is adequately lubricated (as described in Section 6.2, below.) Before returning the printer to the customer, inspect the springs, paper-feed rollers, and basic operation.
REV.-A Table 6-2. Lubrication Points (Refer to Figure 6-2) Ref. No. Lubrication Points Lubricant 1 l/4 of the perimeter of the top edge of the gear (8.5 mm, 30 mm) G-26 2 l/3 of the perimeter of the top edge of the gear (40 mm) G-26 3 l/3 of the perimeter of the top edge of the platen gear G-26 4 Portion of carriage that contacts base frame G-26 5 Oil pad 6 Portion of platen shaft that contacts ground spring G-20 7 Gear (40 mm) shaft G-26 8 Gear (8.
REV.-A (, \ Figure 6-2.
REV.-B / / . Figure 6-3.
REV.-B APPENDIX A.1 CONNECTOR S U M M A R Y ................................................................. A-1 A.2 CIRCUIT DIAGRAMS ........................................................................... A-5 A.3 CIRCUIT BOARD COMPONENT LAYOUT .................................... A-12 A.4 EXPLODED DIAGRAM.. ....................................................................... A-16 A.5 CASE OUTLINE DRAWING.. ..............................................................
REV.-B LIST OF TABLES Table A-1. Board Connector Summary.. .................................................. A-2 Table A-2. CN2 BOARD ASSY., M A I N (C062 MAIN). ........................ A-3 Table A-3. C N 3 BOARD ASSY., M A I N (C062 MAIN). ........................ A-3 Table A-4. CN4 BOARD ASSY., M A I N (C062 MAIN). ........................ A-3 Table A-5. CN5 BOARD ASSY., M A I N (C062 MAIN). ........................ A-3 Table A-6. CN6 BOARD ASSY., MAIN (C062 M A I N )........... . ..........
REV.-B A.1 CONNECTOR SUMMARY Figure A-l illustrates the interconnection of the primary components. Table A-l summarizes the functions and sizes of the connectors. BOARD ASSY., PANEL (BCOOAG;D;NL Model 5E10/5E60 PRINTER MECHANISM GAP LEVER CRHOME PE-2 PE- 1 CR MOTOR PF MOTOR A A A A A A A * CNII 1 CN12 1 CN8 1 CN9 1 CNIO 1 CN4 1 CN5 HEAD HEAD A A t CN3 BOARD ASSY, MAIN (CO62 MAIN BOARD) m BOARD ASSY.
REV.-B Table A-l. Board Connector Summary Board Connector Function Pins BOARD ASSY., MAIN (CO62 MAIN BOARD) CNl CN2 CN3 CN4 CN5 CN6 CN7 CN8 CN9 CNlO CNll CN12 CN13 Parallel interface Optional interface card Control panel MOTOR, CR MOTOR, PF Printhead Printhead DETECTOR ASSY., HP (HP sensor) DETECTOR ASSY., PE, REAR DETECTOR ASSY.,. PE, PRONT DETECTOR ASSY., PLATEN DETECTOR ASSY., RELEASE DC power input BOARD ASSY.,(POWER SUPPLy):(CO62 PSB/PSE board) 36 36 12 5 5 17 15 2 2 2 2 2 11 BOARDASSY.
REV.-B Table A4 CN4 BOARD ASSY., MAIN (CO62 MAIN) Table A-2. CN2 BOARD ASSY., MAIN (CO62 MAIN) N o . I/O 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 Signal Name +5 +5 +5 +5 +5 +5 TXD 0 /READY 0 I RXD NC 0 /RST INH 0 I /CMREQ I NVRRDY I /RDREQ /WR 0 /RD 0 0 KS - .GND GND GND GND GND GND A3 0 A2 0 Al 0 A0 0 I/O D7 I/O D6 I/O 05 I/O D4 I/O 03 I/O D2 I/O Dl I/O DO Function No.
REV.-B I Table A-13. CN13 BOARD ASSY., MAIN (CO62 MAIN) Table A-7. CN7 BOARD ASSY., MAIN (CO62 MAIN) No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 I 0 0 0 0 0 0 0 0 0 0 0 0 Nams HD3 HDll HD2 HD19 HD7 COM COM COM HD22 HD15 HD18 HD23 HDlO HD14 HD6 Function I/O 3 11 2 19 7 0 Head data Head data Head data Head data Head data Common Common Common Head data Head data Head data Head data Head data Head data Head data - 22 15 18 23 10 14 6 Table A-6. CN6 BOARD ASSY., MAIN (CO62 MAIN) No.
. .
REV-B C062 MAIN Board Figure A.3. BOARD ASSY..
CN2 T, c2 22ooP D5, FMP-‘IZS PT-07 c3 22OOP ‘T_ FG 2 2. ; : 1 ELF1.90290b-I Cl 0 22” 1-4E---ll b RI 300% .
CN2 ‘ 4 c”si C5 Z2WP .
Lr L - I TT I 1 ’ 1 N ’ I’ CNl - C062 PSE Board 2002850
Pb? CNl C062 PSE Board 2002850
CN1 I RXSO’ PIUSE d CO62 PNL Board ‘1 Excluding Japan
CO62 III MAIN m _-----I !G 00-I+ I26 ASSY. 2002847 RI* c”lh m, ’ c&x L.z” CI, ‘12 r 21 CNll21~ rb n6,KlA 1 CNB CN9 CNIOnLU 1 - MROM BM-256K 1' , a z 6 3 1112131 ..... ...... I 8 -rk C’6 IWB I . 1 . I . I .
REV.-B c61 ----I+ ; L------J -- C O 6 2 PSB TM, u$ ’ -;cnrCMK-54X1 -- --a-m ASSY.2002849 00 Figure A-10. BOARD ASSY.
REV.-B +I-c2 -II-C3 L2 a- D8I - - - - - - - “I - 5 t%K-54XT. v ASSY 2002850 00 Figure A-11. BOARD ASSY.
; C O 6 2 P N L QW CM-YXT 2 DIP 5.~1 ? s ASSY 2002852 00 DI - J3 ...........,.
? 2
REV.-B Figure A-14.
REV.-B / x Figure A-15.
REV.-B \ Figure A-16.
Table A-14. Part Number Reference Table Ref. No.
Table A-14. Part Number Reference Table (Cont.) Ref. NO. 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 Descrlptlon Ref. No. Spur gear (17 mm) Paper tension spring Type Eretaining ring (5) CR guide shaft G adjustment lever Driven pulley Belt pulley flange Driven pulley shaft Plain washer (3.2 x 0.
REV.-A A.5 CASE OUTLINE DRAWING 368 mm Figure A-17.
REV.-B ----I 151 Figure A-18.
Appendix B The LQ-570+/1070+ Differences between the LQ-570+/1070+ and the LQ-570/1070 . . Important Component Differences . . . . . . . . . . . . . . . . . Faster Print Speeds. . . . . . . . . . . . . . . . . . . . . . . . . . Faster Bit Image Print Speeds . . . . . . . . . . . . . . . . . . . . Faster Paper Feed Speeds. . . . . . . . . . . . . . . . . . . . . . Lower Noise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Additional Scalable Fonts . . . . . . . . . . . . . . . . . . . . . . .
Appendix B Tables Table B-1 Component Compatibility . . . . . . . . . . . . . . . . . Table B-2. Print Speed Comparison . . . . . . . . . . . . . . . . . . Table B-3. Bit Image Print Speed Comparison. . . . . . . . . . . . Table B-4. DIP Switch SW1 Differences . . . . . . . . . . . . . . . . Table B-5. Character Set Selection (Same for Both Printers) . . . Table B-6. Character Table Selection Differences . . . . . . . . . . Table B-7. Differences in the Cl07 MAIN for the LQ-570+ and LQ-1070+ . . . . . . .
Appendix B. The LQ-570+/1070+ This appendix describes the LQ-570+/1070+ printer, a small, low-cost printer with advanced paper-handling features that is compatible with the LQ-570 and LQ-1070. Differences between the LQ-570+/1070+ and LQ-570/1070 Important Component Differences Table B-l. Component Compatibility Comments LQ-570/1 070 LQ-570+/1 070+ Cl 07 MAIN boards CO62 MAIN boards Not interchangeable. (Different boards for LQ-570+ and LQ-1 070+. See Table B-7.
Appendix B Faster Bit Image Print Speeds Table B-3. Bit Image Print Speed Comparison Bit Image Printing Mode Pins 8 8 8 Density (W) Printable Dots LQ-570+/l 070+ Speed (W) LQ-57011 070 SPA tips) Single-density Dual-density Double-speed, dual-density 60 120 480 960 22.5 11.2 21 .o 10.5 120 960 22.5 21 .o density CRT graphics CRT graphics II Single-density Dual-density CRT graphics II Triple-density Hex-density 240 80 90 60 120 90 180 360 1920 640 720 480 960 720 1440 2880 11.2 11.2 15.
Appendix B Character Table Differences BRASCII and Abicomp added to LQ-570+/1070+ Table B-4. DIP Dwitch SW1 Differences SW Description I I ON LQ-570+/1 070+ Factory Setting OFF 1 2 lnternational character set and PC table selection (See character set selection table below.
Appendix B Jumper Differences LQ-570+/1070+ When jumper 512 is connected to SLIN, the printer recognizes the SELECT IN signal Corn the host. LQ-570/1070 When jumper 53 is connected to GND, the SLCT-IN signal is fixed to LOW. Printer Weight Difference LQ-570+/1070+ 15 lb. (6.8 kg)/20 lb. (9.5 kg) LQ-570/1070 13.5 lb. (6.1 kgY18.6 lb. (8.4 kg) Printer Height Difference LQ-570/1070 LQ-570+11070+ 6 inches 6.
Appendix B C107 MAIN Board Component Layout S T K 6 7 1 2 (IClO) E05A50 (ICll) I CPU TMPQOCO41 (IC21) \( I MASK ROM (IC PROM (IC14) EO5A66 (IC2) Figure B-l. Cl07 MAIN Board Component Layout Note: The LQ-570+ and the LQ-1070+ use different versions of the Cl07 MAIN board. The differences between the boards are shown in the table below. Table B-7.
Appendix B LQ-570+/1070+ Control Circuit Operation The control circuitry consists of two boards: the Cl07 MAIN board and the CO62 PNL board (the control panel). The printer’s CPU is an 8-bit CPU TMP9OCO41 running at 10 MHz. It oversees control of all the components of the printer.
Appendix B Table B-8 lists the functions of the main components and circuits of the printer. The CPU converts the print data sent from the host computer to image data (the print image). The image data is then loaded into RAM. Each line of data is processed sequentially. The CPU transfers the print data to the printhead drive circuit. The CPU sends the printhead drive pulse to the printhead drive circuit. The length of this pulse corresponds to the printhead drive voltage.
Appendrx B 1 we U-O. 1’ U.eb.C”.ea “, ,Icc: I.IUC#C 1v U.W UC, ~-UC,0 IC or Circuit Location Functions TMP90C41 IC21 Receives data from the host computer and loads the data to the input buffer in RAM (under interrupt processing control). Expands the input data held in the buffer to create image data. Loads this image data to the image buffer in RAM. Transfers the image data to the printhead drive circuit. Also controls various parts of the printer mechanism, such as the motors.
Appendix B Reset Circuit Figure B-4 shows a block diagram for the reset circuit, which issues the /BESET signal to initialize each part of the control circuit as it receives this signal. The conditions when the /RESET signal is output are described below. When Turning on the Power Supply Immediately after power is turned on, PST 529 (IC19) outputs the /PON pulse. The E05A50 (ICll) receives this pulse and outputs the /DISC pulse. The electrical charge in capacitor C29 is then discharged.
Appendix B Power On CPU Self Reset t t +5 V Line 1 THLD Figure &5.
Appendix B Sensor Circuits Figure B-6 shows a block diagram for the sensor circuits. Detection of any excessive printhead temperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, such as the CRHOhJE signal, pass through each low pass filter before reaching the CPU. Terminals P50 to P55 on the CPU are used for the A/D converter. The Vref circuit generates the A/D converter reference voltage Vref. Printhead CRHome TMP2 Seneor Circuit - - - - - - ------_______ +5 v 0.
Appendix B CR Motor Drive Circuit Figure B-7 shows the CR motor drive circuit, which uses an open-loop, constantcurrent drive control to drive the CR motor. The motor is driven with 2-2 phase excitation and 1-2 phase excitation. The 2-2 phase excitation corresponds to two 1-2 phase excitation steps, so for each single step phase change of a 2-2 phase excitation motor, the carriage moves 1/120 inch. For each single step phase change of a 1-2 phase excitation motor, the carriage moves l/240 inch.
Appendix B PF Motor Drive Circuit The stepping motor that the printer uses to advance the paper can advance it by a minimum of 1/360 inch. The motor is a 2-2 phase or l-2 phase, constant-voltage drive type. P70 to P73 on the CPU are the phase control ports for the stepping motor. PF motor phase data is output through these ports. Cl to C4 are turned on and off within the PU1501 (IC3) based on the phase data sent from the CPU.
Appendix i3 Printhead Drive Circuit Figure B-9 shows the printhead drive circuit block diagram. The print data already is expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the head gate array (IC2). The CPU samples the voltage from the +35 V line via the ND converter. The CPU outputs a pulse via P83, the CPU time output port. The length of this pulse corresponds to the voltage of the +35 V line.
Appendix B Disassembly Procedures Unique to the LQ-570+/1070+ For the most part, disassembly of the LQ-570+/1070+ is the same as for the LQ570/1070. For the power supply and control panel, however, there a different number of screws to remove for the LQ-570+/1070+ than the LQ-570/1070. For your convenience, this section describes disassembly of the Cl07 MAIN board, power supply board, and control panel. Refer to Chapter 3 of the LQ-570/1070 Service Manual for other disassembly procedures.
Appendix B CBB(C) (M3 X 10) Screws CB (M3 X B)‘Screw Main B&d Asembh/ Figum B-11. Main Boa&Assembly ADJUSTMEWI’ REQUIRED After you have replaced the main board assembly, you must adjust the bidirectional print alignment. See Section 4.2 in the LQ-570/1070 Service Manual.
Appendix B Removing the C062 PSB Power Supply Board Assembly 1. 2. 3. 4. Remove the upper housing assembly. (See Section 3.2.2.2.) Remove the cable from connector CN13 on the main board assembly. Remove the cable from connector CNl on the power supply board assembly. Remove 5 CBB(C) (M3 x 10) screws and 1 CB (M3 x 8) screw that hold the power supply board assembly to the lower housing assembly. Then remove the power SUPPlY.
Appendix B Removing the C062 PNL Board 1. 2. Remove the front housing. (See Section 3.2.2.1.) Remove the 5 CBB(C) (M3 x 10) screws that hold the panel board assembly to the front housing. Remove the panel board assembly. Figure B-13.
Appends: B Adjustments The adjustments for the LQ-570+/1070+ are the same as those for the LQ-570/1070, with the exception of the circuit adjustment described in Section 4.3. This adjustment is not applicable to U.S. dealers, because the variable resistor is set correctly for the main board in the factory and does not need to be changed. The LQ570+/1070+ circuit adjustment is described below only for Epson dealers outside the U.S., who may require this information.
Appendix B Troubleshooting The tables below provide the test points you ca.u use to check the and drivers for the LQ-570+/107&. motors, printhead, Table Bc 1 (0. Printhead Test Points I- Connector CN6 CN7 CN6 (Thermistor) Test Method (Power off. Set Meter to Ohms) Resistance Place one lead on one of the commons and the other lead on each of the test pins. 45.5 ohms +/- 3.
Appendix B 1 W1t! D-l&. Driver Printhead IC4 - IC9 (STA475A) Terst Point 1 GND Test Point 2 CN6 pins 1,2,3, 495, 6, 10, 11,12, 13, 14,15 ut-sver 1 ea. 1 “ClCCI Test Method (Power off. Set Meter to Diodes) Disconnect the printhead connector. Place the + lead on GND and the - lead on each of the test pins. Reading Consistent readings within +I- 20%. CN7 pins 1,2,3,4, 5, 9,10,11,12, 13,14,15 PF Motor IC3 (PU1501) GND CN5 pins 1 , 293, 4 Disconnect the paper feed motor.
Appendix B The figure below shows how printhead connector pins are assigned to the dot wires in the printhead. II240 0 #l 0 u3 0 a!5 0 iI7 0 19 0 (11 0 (13 0 a15 0 Y17 0 a19 0 a21 0 1123 ( Wire Assignment ) Coil Resistance: 45.5 k3.2 SI at 25’~ (Between each dot wire and common.) @@@@<@@I@@0 TEWl (4 18 116 < Terminal -&ik: II21 (13 Assignment 15 ) Figure B-14.
Appendix B Reference Materials This section contains tables, diagrams, and schematics specific to the LQ570+/1070+. The figure below is a connection diagram for the Cl07 MAIN board and the M&J10 printer mechanism (for the LQ-570+) or M&J60 printer mechanism (for the LQ-1070+). MODEL 5J10/5J60 PRINTER MECHANISM ASSEMBLY GAP LEVER CRHOME PE-2 PE-1 QI YOTORPF MOTOil HEAD HEAD 1 I 4 4 4 4 4 4 4 4 f v + 9 v v * 1 CNlll (CN121 1 CNB 1 1 CN9 1 (CNlOj 1 CN4 1 1 CN5 Black and While Gray Wires Wh3.
Appendix B Table B-13.
Appendrx S Table B-14. Cl 07 MAIN Board - CNZ Pin No.
Appendix B 1 -be xl-Ail. Pin No. UO 1 2 3 4 5 6 7 8 9 I - 10 - 0 0 0 0 I - - 11 I 12 - b1”* I.-L. Ucma.U - u4.0 Function Signal Name /PAUSE /READY TXS ILDLED ICKS /LDSW RXS +5 v GND SHLD POWER 1 POWER 2 PAUSE button Fixed to GND Transmit signal (LED) LED data latch Shift clock Load button data Receive data (button) +5 VDC Signal ground Signal ground Power button Fixed to GND Table B-16. Cl07 MAIN Board - CN4 Pin No.
Appendix B Table B-18. Cl07 M.MN B ard - CN6 Pin No. It0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 0 0 0 0 0 0 0 0 0 0 0 0 I - Function Signal Name Head data 5 Head data 1 Head data 13 Head data 9 Head data 21 Head data 17 Common Common Common Head data 24 Head data 16 Head data 12 Head data 8 Head data 20 Head data 4 Head temperature +vu HD5 HDl HD13 HD9 HD21 HD17 COM COM COM HD24 HD16 HD12 HD8 HD20 HD4 TEMP2 TEMPl Table B-19. Cl07 BitdIN B ard - CN7 Pin No.
Appendix B Table R21. Cl07 MAIN Board - CN9 Pin No. I - 1 2 Function Signal Name l/O Rear PE sensor Signal ground PE2 GND Table R22. Cl07 MAIN Board - CNlO Pin No. II0 I - 1 2 Function Signal Name PEl GND Table B-23. Cl07 MAIN Board - CNll Pin No. vo 1 2 I - Function Signal Name GAP GND Platen gap sensor Signal ground Table B-24. Cl07 MAIN Boa& - CN12 Pin No. 1 2 l/O I - Function Signal Name Release lever sensor Signal ground LEVER GND Table R25.
Appendix B Figure B-16. Cl07 iMX.
Appendix B rlrwo,r I-----------7 mp ,h. re1.101 OP” lW Lawo. L------ ------- _: Figure B-l 7.
