SERVICE MANUAL
Serial Impact Dot Matrix Printer
EPSON LQ-590/2090
SEDM03001
Notice
All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, mechanical, photocopying, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.
All effort 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.
The contents of this manual are subject to change without notice.
The above not withstanding SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences thereof.
EPSON is a registered trademark of SEIKO EPSON CORPORATION. General General Notice: Notice:
Other Other product product names names used used herein herein are are for ident identifica ification tion purpo purpose se only only and may may be tradema trademarks rks or regis registered tered trademark trademarks s of their their respective owners. EPSON disclaims any and all rights in those marks.
Copyright © 2004 SEIKO EPSON CORPORATION. Imaging & Information Product Division I & I CS Quality Promotion Dept.
PRECAUTIONS Precautionary 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 DANGER Headings.
WARNING
Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.
DANGER 1.
ALWAYS DISCONNE DISCONNECT CT THE PRODUCT PRODUCT FROM THE POWER POWER SOURCE SOURCE AND PERIPHERAL PERIPHERAL DEVICES DEVICES PERFORMING PERFORMING ANY ANY MAINTENANCE MAINTENANCE OR REPAIR REPAIR PROCEDURES.
2.
NO WORK SHOULD SHOULD BE PERFORMED PERFORMED ON THE THE UNIT BY PERSONS PERSONS UNFAMILIAR UNFAMILIAR WITH WITH BASIC SAFETY SAFETY MEASURES MEASURES AS DICTATED DICTATED FOR FOR ALL ELECTRONIC ELECTRONICS S TECHNICIANS IN THEIR LINE OF WORK.
3.
WHEN PERFORMIN PERFORMING G TESTING AS DICTATED DICTATED WITHIN WITHIN THIS THIS MANUAL, DO NOT NOT CONNECT THE THE UNIT TO A POWER SOURCE SOURCE UNTIL UNTIL INSTRUCTED INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
4. When disassembling disassembling or assembling assembling a product, product, be sure to wear gloves to avoid injuries injuries from metal parts parts with sharp edges. edges.
WARNING 1.
REPAIRS REPAIRS ON EPSON PRODUC PRODUCT T SHOULD BE BE PERFORMED PERFORMED ONLY BY BY AN EPSON EPSON CERTIFIED CERTIFIED REPAIR REPAIR TECHNICIAN. TECHNICIAN.
2.
MAKE CERTAIN CERTAIN THAT THE SOURCE SOURCE VOLTAGES VOLTAGES IS THE SAME SAME AS THE RATED VOLTAGE, VOLTAGE, LISTED LISTED ON THE SERIAL SERIAL NUMBER/RAT NUMBER/RATING ING PLATE. PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
3.
ALWAYS VERIFY VERIFY THAT THE THE EPSON PRODUCT PRODUCT HAS BEEN DISCONN DISCONNECTED ECTED FROM FROM THE POWER SOURCE SOURCE BEFORE BEFORE REMOVING REMOVING OR REPLACING REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
4.
IN ORDER TO PROTECT PROTECT SENSITIVE SENSITIVE MICROPROCESS MICROPROCESSORS ORS AND CIRCUITRY, CIRCUITRY, USE STATIC STATIC DISCHARGE DISCHARGE EQUIPMENT, EQUIPMENT, SUCH AS ANTI-STATIC ANTI-STATIC WRIST WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.
5.
DO NOT REPLACE REPLACE IMPERFECTLY IMPERFECTLY FUNCTION FUNCTIONING ING COMPONENTS COMPONENTS WITH WITH COMPONENTS COMPONENTS WHICH WHICH ARE NOT MANUFACTUR MANUFACTURED ED BY EPSON. IF SECOND SECOND SOURCE IF’S OR OTHER COMPONENTS WHICH HAVE NOT BEEN APPROVED ARE USED, THEY COULD CAUSE DAMAGE TO THE EPSON PRODUCT, OR COULD VOID THE WARRANTY OFFERED BY EPSON.
About This Manual This manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the printer. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.
Manual Configuration This manual consists of six chapters and Appendix. CHAPTER 1. PRODUCT DESCRIPTIONS Provides a general overview and specifications of the product. CHAPTER 2. OPERATING PRINCIPLES Describes the theory of electrical and mechanical operations of the product. CHAPTER 3. TROUBLESHOOTING TROUBLESHOOTING Describes the step-by-step procedures for the troubleshooting. CHAPTER 4. DISASSEMBLY / ASSEMBLY Describes the step-by-step procedures for disassembling and assembling the product. CHAPTER CHAPTER 5. ADJUSTM ADJUSTMENT ENT Provides Epson-approved methods for adjustment. CHAPTER CHAPTER 6. MAINTENAN MAINTENANCE CE Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product. APPENDIX Provides the following additional information for reference: • Connector pin assignments • Electric circuit boards components layout • Electrical circuit boards schematics • Exploded diagram & Parts List
Symbols Used in this Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages. ADJUSTMENT REQUIRED
CAUTION
CHECK POINT
WARNING
Indicates an operating or maintenance maintenance procedure, practice or condition that is necessary to keep the product’s quality. Indicates an operating or maintenance procedure, procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment. May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also provide additional additional information that is related to a specific subject, or comment on the results achieved through a previous action. Indicates an operating or maintenance procedure, procedure, practice or condition that, if not strictly observed, could result in injury or loss of life. Indicates that a particular task must be carried out according to a certain standard after disassembly and before re-assembly, otherwise the quality of the components in question may be adversely affected.
Revision Status Revision
Date of Issue
A
March 5, 2004
Description
First release
CHAPTER
1 PRODUCT DESCRIPTIONS
EPSON LQ-590/2090
Revision A
1.1 Features
PRINTING SPEED
EPSON LQ-590/2090 is a small-foot 24-pin serial impact dot matrix printer.
Table 1-2. Printing Speed (cps) (cps) and Printable Columns Columns
HARDWARE SPECIFICATIONS
Print method
: Impact Dot Matrix
Number of pins
: 24pins
Print pin arrangement
: 12 x 2
Printing Mode
High Speed Draft Draft Condensed
Print pin diameter
: 0.20 mm (0.0079 inch)
Color
: Black ink ribbon
Print Direction
: Bi-direction with logic seeking
LQ
LQ Condensed
RESOLUTION Table 1-1. Resolution ( dpi ) Horizontal Density
Vertical Density
Adjacent Dot Print
High Speed Draft
90 dpi
180 dpi
No
Draft
120 dpi
180 dpi
No
Draft Condensed
240 dpi
180 dpi
No
LQ
360 dpi
180 dpi
No
60, 80, 90 or 120 dpi
60 dpi
Yes
Printing Mode
8-pin Bit Image 24-pin Bit Image Raster Graphics *1
120 or 240 dpi
60 dpi
No
60, 90, 120 or 180 dpi
180 dpi
Yes
360 dpi
180 dpi
No
180 or 360 dpi
180 or 360 dpi
Yes
Note “*1 ”: This mode is not not mention mentioned ed in in user’s user’s manual. manual.
Character Pitch
Printable Columns LQ-590 LQ-2090
Printing Speed Normal Copy
10 cpi
80
136
440
346
12 cpi
96
163
529
415
17 cpi
137
233
559
441
20 cpi
160
272
658
519
10 cpi
80
136
110
86
12 cpi
96
163
132
103
15 cpi
120
204
165
129
17 cpi
137
233
187
147
20 cpi
160
272
220
173
Note1: When the power supply supply voltage drops to the lower limit, the printer stops printing and then starts printing remaining on that line again more slowly than before. 2: When the head temperature temperature rises to the upper upper limit, the printer stops printing. When the head temperature falls to the normal level, the printer starts printing again more slowly than before.
EPSON LQ-590/2090
Revision A
FEEDING METHOD
PAPER SPECIFICATIONS
Friction feed
: Front, Rear
Push tractor feed
: Front, Rear
Push Push & Pull Pull tra tract ctor or fee feedd
: Fron Front, t, Rea Rear r
Pull tractor feed
: Front, Rear, Bottom
Table 1-3. Cut Sheet (Single sheet, sheet, Not multi part) part) LQ-590 Front Entry LQ-590
FEED SPEED
Norma rmal mode
Copy mode
4.23 mm (1/ (1/6 inch feed) Continuous feed 4.23 mm (1/6 inch feed) Continuous feed
FEEDER
Front push tractor
Rear push tractor
CSF Bin 1 / Bin 2 (Option)
Pull tractor ( Option )
Roll paper holder (Option)
45 msec 0.127 MPS (m/sec) [5.0 IPS (inches/sec)] 66 msec 0.092 MPS (m/sec) [3.6 IPS (inches/sec)]
Manual
Manual
Width
(inch) (mm)
Min. (3.9) 100
Max. (10.1) 257
Min. (3.9) 100
Max. (10.1) 257
Length
(inch) (mm)
(3.9) 100
(14.3) 364
(3.9) 100
(14.3) 364
Thickness
(inch) (mm)
Weight
(g/m2)
(lb)
CSF Capacity
Rear Entry High-Capacity CSF Min. Max. (3.9) (8.5) 100 216
(3.9) 100
Single-Bin CSF
(14.3) 364
Min. (7.2) 182
Max. (8.5) 216
(8.3) 210
(14.3) 364
(0.0025) (0.0055) (0.0025) (0.0055) (0.0028) (0.0055) (0.0028) (0.0055) 0.065 0.14 0.065 0.14 0.07 0.14 0.07 0.14 52 (14)
90 (24) -- -
52 (14)
90 (24) - --
64 (18)
90 (24)
64 (18)
90 (24)
185 sheets with the 60 sheets with the form form 64 g/m2 (17lb) *1 64 g/m2 (17lb) *2 150 sheets with the 50 sheets with the form form 82 g/m2 (22lb) *1 82 g/m2 (22lb) *2
Quality
Plain paper, Reclaimed paper Not curled, not folded, not crumpled
Note : Printing on reclaimed paper paper is available only under normal normal temperature and humidity conditions. Note “*1 ”: When using using High-Ca High-Capaci pacity ty CSF, paper paper total total thickne thickness ss is below below 15 mm. mm. “*2” : When using Single-Bin CSF, paper total thickness is below 5 mm.
EPSON LQ-590/2090
Revision A
Table 1-4. Cut Sheet (Single sheet, sheet, Not multi part) part) LQ-2090 Front Entry LQ-2090
Manual
Manual
Width
(inch) (mm)
Min. (3.9) 100
Max. (16.5) 420
Min. (3.9) 100
Max. (16.5) 420
Length
(inch) (mm)
(3.9) 100
(16.5) 420
(3.9) 100
(16.5) 420
Thickness
(inch) (0.0025) (0.0055) (mm) 0.065 0.14
Weight
(g/m2)
(lb)
CSF Capacity
52 (14)
90 (24) -- -
Rear Entry High-Capacity CSF Min. Max. (3.9) (16.5) 100 420
(3.9) 100
Table 1-5. Cut Sheet (Multi (Multi part) LQ-590 LQ-590 Front Entry
Single-Bin CSF
(16.5) 420
90 (24) - --
64 (18)
90 (24)
Max. (16.5) 420
Minimum
Maximum
Width
(inch) (mm)
(3.9) 100
(10.1) 257
- -- --
-- - - -
(8.3) 210
(14.3) 364
Length
(inch) (mm)
(3.9) 100
(14.3) 364
- -- --
-- - - -
Total thickness
(inch) (mm)
(0.0047) 0.12
(0.015) 0.39
- -- --
-- - - -
Weight
(g/m2)
40 (12)
58 (15)
- -- --
-- - - -
64 (18)
90 (24)
185 sheets with the 60 sheets with the form form 64 g/m 2 (17lb) *1 64 g/m2 (17lb) *2 150 sheets with the 50 sheets with the form form 82 g/m 2 (22lb) *1 82 g/m2 (22lb) *2
Quality
Plain paper, Reclaimed paper Not curled, not folded, not crumpled
Note : Printing on reclaimed paper paper is available only under normal temperature temperature and humidity conditions Note “*1 ”: When using using High-C High-Capac apacity ity CSF, CSF, paper total total thickne thickness ss is below below 15 mm. mm. “*2” : When using using Single-Bin Single-Bin CSF, paper paper total thicknes thicknesss is below 5 mm.
Manual
Min. (7.2) 182
(0.0025) (0.0055) (0.0028) (0.0055) (0.0028) (0.0055) 0.065 0.14 0.07 0.14 0.07 0.14 52 (14)
LQ-590
Rear Entry Manual / High-Capacity CSF / Single-Bin CSF Minimum Maximum
Copies
(one sheet of multi part)
1 original + 4 copies
(lb)
Quality
Plain paper, Reclaimed paper Not curled, not folded, not crumpled
Jointing
Line glue at the top side of form
-- - --
-----
- -- --
-- - - -
Note1: Type of paper paper of multi-part forms forms should be Carbonless. Don’t Don’t use Carbon-backed Carbon-backed and Carbon-interleaved. 2: Type of paper of line glue at the top should be set with the jointing side of paper horizontal.
EPSON LQ-590/2090
Revision A
Table 1-6. Cut Sheet (Multi (Multi part) LQ-2090 LQ-2090 Front Entry LQ-2090
Manual
Table 1-7. Card
Rear Entry Manual / High-Capacity CSF / Single-Bin CSF Minimum Maximum
LQ-590 & LQ-2090
Front Entry Manual
Minimum
Maximum
Width
(inch) (mm)
(3.9) 100
(16.5) 420
- -- - -
--- --
Width
Min. (inch) (3.9) (mm) 100
Length
(inch) (mm)
(3.9) 100
(14.3) 364
- -- - -
--- --
Length
(inch)
Total thickness
(inch) (mm)
(0.0047) 0.12
(0.015) 0.39
- -- - -
Weight
(g/m2)
40 (12)
58 (15)
- -- - -
Copies
(one sheet of multi part)
Quality
Jointing
1 original + 4 copies
(lb)
- ----
Line glue at the top side of form
- -- - -
Note1: Type of paper paper of multi-part forms should be Crbonless. Don’t use use Carbon-backed and Carbon-interleaved. 2: Type of paper of line glue at at the top should be set with the jointing side of of paper horizontal.
(3.9) 100
(5.8) 148
Thickness
(inch) (mm)
(0.0087) 0.22
(0.0087) 0.22
Weight
(g/m2)
192 (51)
192 (51)
(lb)
--- --
--- --
Max. (5.8) 148
(5.8) 148
Quality
Plain paper, Reclaimed paper Not curled, not folded, not crumpled
Min. (3.9) 100
(mm) --- --
-----
Max. (5.8) 148
Manual
Rear Entry High-Capacity CSF Min. Max. (3.9) (5.8) 100 148
(3.9) 100
(5.8) 148
Single-Bin CSF Min. Max. -- - --
-- -
- --
(0.0087) 0.22
-- -
- --
192 (51)
-- -
- --
Plain paper, Reclaimed paper Not curled, not folded, not crumpled
Note1: Printing on card is available only under under normal temperature temperature and humidity humidity conditions 2: When setting cards, be sure to align their left edge with with the matchmark of the sheet guide. 3: When Paper size is A6 and the sheet is to be set set horizontal, it should be inserted inserted from rear entrance only. 4: When using using card, card, set up card card mode. mode.
EPSON LQ-590/2090
Revision A
Table 1-8. Envelope Front Entry
LQ-590 & LQ-2090
Manual
Min. Max. - - -- Envelope Width (inch) (mm) (No.6)
Length (inch)
Rear Entry High-Capacity Manual CSF Min. Max. Min. Max. (6.5) 165
(3.6) 92
-----
- - -- -
(9.5) 241
-----
(4.1) 105
-----
- - -- -
(mm)
Total Thickness
Weight
(inch) (mm)
(g/m2)
- - -- -
(0.0063) (0.0205) (0.0063) 0.16 0.52 0.16
(0.0205) 0.52
-----
---------
The The dif diffe fere renc ncee of of thi thick ckne ness ss at the the pri print ntab able le area is within 0.25 mm (0.0098 inch)
-----
- - -- -
(lb)
CSF capacity
Single-Bin CSF Min. Max. -----
- - -- -
(mm)
Envelope Width (inch) (mm) (No.10) Length (inch)
Table 1-9. Handling possible possible cut sheets of fixed forms (single sheet/multi-part) with LQ-590
- - -- -
Quality -----
45
90
45
90
(12)
(24)
(12)
(24)
Size Direction
Rear Entry (manual) Front Entry (manual) High-Capacity CSF Single-Bin CSF
- - - --
30 sheets (12 lb)
-- - -
BOND paper, PLAIN paper or AIR MAIL No glue at a flap Not curled, not folded, not crumpled
-----
Rear Entry (manual) Front Entry (manual)
Note1: Printing on envelope is available only under normal temperature temperature and humidity conditions 2: Set the longer side of envelope horizontally. 3: When setting envelopes of No. 6 paper size, be sure to align their left edge with the matchmark of the sheet guide. 4: Envelope should be inserted from rear rear entrance only. 5: Except for AIRMAIL, AIRMAIL, the sheets stacked stacked must not exceed 4 sheets. sheets. 6: Printing is allowed allowed only on the front front side; printing on the back side is impossible. impossible.
A4
B5
A5
A6
Envelope
-- -
Vertical
---/---
/---
/---
/---
/---
/---
Horizontal
---/---
- - -/ - - -
---/---
/---
/---
/---
Vertical
---/---
/
/
/
/
/
---
Horizontal
---/---
- - -/ - - -
---/---
/
/
/
---
Vertical
---/---
/---
/---
/---
/---
/---
-- -
Horizontal
---/---
- - -/ - - -
---/---
/---
/---
/---
Vertical
---/---
/---
/---
/---
/---
/---
-- -
Horizontal
---/---
- - -/ - - -
---/---
/---
- --
- --
-- -
Size Direction
- - -- -
B4
Table 1-10. Handling possible possible cut sheets of fixed forms forms (single sheet/multi-part) with LQ-2090
-- - -
25 sheets (24 lb)
A3
High-Capacity CSF Single-Bin CSF
A3
B4
A4
B5
A5
A6
Vertical
/---
/---
/---
/---
/---
/---
-- -
Horizontal
/---
/---
/---
/---
/---
/---
Vertical
/
/
/
/
/
/
---
Horizontal
/
/
/
/
/
/
---
Envelope
Vertical
/---
/---
/---
/---
/---
/---
-- -
Horizontal
/---
/---
/---
/---
/---
/---
/---
Vertical
---/---
/---
/---
/---
/---
/---
-- -
Horizontal
/---
/---
/---
/---
---/--- ---/---
---
EPSON LQ-590/2090
Revision A
Table 1-11. Continuous paper (Single sheet and Multi Part) LQ-590
Table 1-12. Continuous paper (Single sheet and Multi Part) LQ-2090 LQ-2090
Bottom/Front/Rear Entry Minimum Maximum
LQ-590
Bottom/Front/Rear Entry Minimum Maximum
LQ-2090
Width
(inch) (mm)
(4) 101.6
(10) 254
Width
(inch) (mm)
(4) 101.6
(16) 406.4
Length (one pa page)
(inch) (mm)
(4) 101.6
(22) 558.8
Length (one page)
(inch) (mm)
(4) 101.6
(22) 558.8
1 original + 4 copies
Copies
1 original + 4 copies
Copies
Total thickness
(inch) (mm)
(0.0025) 0.065
(0.015) 0.39
Total thickness
(inch) (mm)
(0.0025) 0.065
(0.018) 0.39
Weight (not multi part)
(g/m2)
52 (14)
82 (22)
Weight (not multi part)
(g/m2)
52 (14)
82 (22)
Weight (one sheet of multi part)
(g/m2)
40 (12)
58 (15)
Weight (one sheet of multi part)
(g/m2)
40 (12)
58 (15)
(lb) (lb)
(lb) (lb)
Quality
Plain paper, Reclaimed paper Carbonless multi part paper Not break, without wrinkle, without tear, without turn over
Quality
Plain paper, Reclaimed paper Carbonless multi part paper Not break, without wrinkle, without tear, without turn over
Jointing
Point glue or paper staple(both side)
Jointing
Point glue or paper staple(both side)
EPSON LQ-590/2090
Revision A
Table 1-13. 1-13. Labels (LQ-590) Bottom/Front Entry Minimum Maximum
LQ-590
Label size
Table 1-14. 1-14. Labels (LQ-2090) Rear Entry Minimum Maximum
See Figure 1-1 below.
Label size
-----
Base sheet width
(inch) (mm)
(4) 101.6
(10) 254
-- - - -
- -- --
Base sheet length (one page)
(inch) (mm)
(4) 101.6
(22) 558.8
-- - - -
Base sheet Thickness
(inch) (mm)
(0.0028) 0.07
(0.0035) 0.09
Total thickness
(inch) (mm)
(0.0063) 0.16
(0.0075) 0.19
Label weight
(g/m2)
(lb)
Quality Note1: 2: 3: 4: 5: 6: 7:
64 (17)
Plain paper or the same quality labels
Bottom/Front Entry Minimum Maximum
LQ-2090
Rear Entry Minimum Maximum
See Figure 1-1 below. 1-1 below.
-----
Base sheet width
(inch) (mm)
(4) 101.6
(16) 406.4
---- -
-- -- -
- -- --
Base sheet length (one page)
(inch) (mm)
(4) 101.6
(22) 558.8
---- -
-- -- -
-- - - -
- -- --
Base sheet Thickness
(inch) (mm)
(0.0028) 0.07
(0.0035) 0.09
---- -
-- -- -
-- - - -
- -- --
Total thickness
(inch) (mm)
(0.0063) 0.16
(0.0075) 0.19
---- -
-- -- -
Label weight
(g/m2)
-----
(lb) -----
Printing on labels is available only under normal temperature temperature and humidity humidity conditions. The base sheet sheet of labels must be continuous paper. paper. Labels should be inserted from bottom or front entrance. entrance. Do not pull out out paper from from backward. backward. No label paper paper should be left on the printer when the printer is not used. Do not print print on the base sheet sheet of labels. labels. Do not use use cut sheet sheet labels. labels.
Quality Note1: 2: 3: 4: 5: 6: 7:
64 (17)
Plain paper or the same quality labels
---------
Printing on labels is available only under under normal temperature temperature and humidity humidity conditions. The base sheet of labels must be continuous continuous paper. Labels should be inserted from bottom or front entrance. entrance. Do not pull out out paper from from backward backward.. No label paper paper should be left left on the printer when when the printer is not used. Do not print print on the base sheet sheet of labels. labels. Do not use use cut sheet sheet labels. labels.
Figure 1-1. Label Size
EPSON LQ-590/2090
Revision A
Table 1-15. Roll Paper LQ-590& LQ-2090
Bottom/Front Entry Minimum Maximum
Rear Entry Minimum Maximum
Width
(inch) (mm)
- - -- -
(8.5) 216
Length
(inch) (mm)
- - -- -
- - -- -
Diameter
(inch) (mm)
- - -- -
Thickness
(inch) (mm)
- - -- -
(0.0028) 0.07
(0.0035) 0.09
Weight
(g/m2)
- - -- -
52 (14)
82 (22)
(lb)
Quality
-----
Plain paper, not curled, not folded, not crumpled
Note1: Roll paper must be set on the roll paper holder (option). 2: Roll paper should be inserted from rear entrance entrance only. 3: Release lever position should be friction.
TYPEFACE
(5)
φ127 mm
Scalable font:
EPSO EPSON N Rom Romaan:
10.5 10.5 pt., pt., 8 pt. pt. - 32 32 pt. pt.(e (eve very ry 2 pt. pt.))
EPSON EPSON Sans Sans Serif: Serif:
10.5 10.5 pt., pt., 8 pt. - 32 pt.(ev pt.(every ery 2 pt.) pt.)
EPSO EPSON N Roma Romann T:
10.5 10.5 pt., pt., 8 pt. pt. - 32 pt. pt.(e (eve very ry 2 pt.) pt.)
EPSON Sans Serif H: 10.5 pt., 8 pt. - 32 pt.(every 2 pt.)
Bar code fonts: EAN-13, EAN-8, Interleaved 2 of 5, UPC-A, UPC-E, Code 39, Code 128, POSTNET, Coda bar (NW-7)*, Industrial 2 of 5*, Matrix 2 of 5*
NOTE: “*”: These fonts are not described in user’s manual.
CHARACTER TABLES
Standard version NLSP version Inte Intern rnat atio iona nall cha chara ract cter er sets sets INPUT BUFFER
Bit map font
EPSON Draft:
10 cpi, 12 cpi, 15 cpi
EPSO EPSON N Rom Roman an::
10 cpi, pi, 12 12 cp cpi, 15 cpi cpi,, Pro Propo port rtio iona nall
EPSON EPSON Sans Sans Seri Serif: f:
10 cpi, cpi, 12 cpi, cpi, 15 cpi, cpi, Propor Proportio tional nal
EPS EPSON Co Courier:
10 cp cpi, 12 cp cpi, 15 cp cpi
EPSON Pr Prestige:
10 cp cpi, 12 12 cp cpi
EPSON Script:
10 cpi
EPSON OCR-B:
10 cpi
EPSON Orator:
10 cpi
EPSON Or Orator-S:
10 cp cpi
EPS EPSON Script C:
Propo roport rtiional
128 Kbyte
: 13 tables : 43 tables : 14 14 cou count ntrie riess and and lega legall
EPSON LQ-590/2090
Revision A
ELECTRICAL SPECIFICATION Table 1-16. 120V Version Rated voltage
AC 120 V
Input voltage range
AC 103.5 to 132 V
Rated frequency range
50 to 60 Hz
Input fr frequency range
49.5 to 60.5 Hz Hz
Rated current
1.1 A (Max. 2.5 A)
Power consumption
Approx.42 W (ISO/IEC 10561 Letter pattern) Approx. 4.5 W in sleep mode * 0 W in power off mode Energy Star compliant
Insulation resistance
10 MΩ min. (between AC line and chassis, DC 500 V)
Dielectric strength
AC 1000 V rms. 1 min. or AC 1200 V rms. 1 sec. (between AC line and chassis)
Table 1-17. 230V Version Rated voltage range
AC 220 to 240 V
Input voltage range
AC 198 to 264 V
Rated frequency range
50 to 60 Hz
Input frequency range
49.5 to 60.5 Hz
Rated current
0.6 A (Max. 1.3A)
Power consumption
Approx. 42 W (ISO/IEC 10561 Letter pattern) Approx. 4.5 W in sleep mode * 0 W in power off mode Energy Star compliant
Insulation resistance
10 MΩ min. (between AC line and chassis, DC 500 V)
Diel ielectric st strength
AC 15 1500 V rms. 1 min. (between AC AC liline an and ch chassis)
Table 1-18. UPS Version Rated voltage range
AC 100 to AC 240V
Input voltage range
AC 90 to 264V
Rated frequency range
50 to 60 Hz
Input fr frequency ra range
49.5 to to 60 60.5 Hz Hz
Rated current
1.1 A (Max. 3.0 A)
Power consumption
Approx.44 W (ISO/IEC 10561 Letter pattern) Approx. 5 W in sleep mode * 0 W in power off mode Energy Star compliant
Insulation resistance
10 MΩ min. (between AC line and chassis, DC 500 V)
Diele ielect ctrric stre trength ngth
AC 150 15000 V rms rms. 1 min. in. ( betw betweeen AC lin linee and and chass hassis is))
Note “* ” : Upon a lapse lapse of 5 minutes minutes under the follow following ing conditi conditions, ons, the the printer printer enters enters sleep sleep mode: • Not in Pause, not in error status • There is no data in input buffer.
EPSON LQ-590/2090
Revision A
ACOUSTIC NOISE
RELIABILITY
Level:
See below (ISO 7779 pattern) Table 1-19. Level LQ-590
LQ-2090
Standard Version
52 dB(A) 52 dB(A) 50 dB(A) in Low-noise mode * 50 dB(A) in Low-noise mode *
NLSP version
51 dB(A) 52 dB(A) 49dB(A) in Low-noise mode * 50 dB(A) in Low-noise mode *
Not Notee “*” : Low-n ow-noi oisse mode mode:: This mode realizes noise reduction in exchange of half print speed. Refer to 6.2.3. Default setting.
ENVIRONMENTAL CONDITIONS
Temperature :
5 to 35 °C (operating,
*1)
15 to 25 °C (operating, *1,*2) -30 to 60 °C (non-operating) Humidity :
Resi Resist stan ancce to to vib vibra rati tion on :
40 milli million on lines lines (exc (except ept prin printt head) head)
MTBF
20000 POH (25% Duty)
Print head life
400 million strokes/wire
RIBBON CARTRIDGE
Type
Fabric
Color
Black
Ribbon dimensions
13 mm (W) x 17 M (L) Endless
Ribbon life
Approximately 5 million characters
Car Cartridg idge dimensio sions
287.2 mm (W) x 30.3 mm (H) (H) x 77.0 mm (D)
Type
Fabric
Color
Black
0 to 85 % RH (non-operating)
Ribbon dimensions
13 mm (W) x 32 M (L) Endless
1 G, within 1ms (operating)
Ribbon life
Approximately 8 million characters
2 G, within 2ms (non-operating)
Car Cartrid ridge dimensions
461.6 mm (W) (W) x 30.3 0.3mm (H) x 77.0 mm (D)
10 to 80 % RH (operating, *1) 30 to 60 % RH (operating,
Resistance to shock :
Total Total print print volu volume me (MVBF (MVBF))
*1,*2)
0.25 .25 G, G, 10 10 to to 55 55 Hz Hz (op (opeerati rating ng)) 0.50 G, 10 to 55 Hz (non-operating)
*1: Without condensation *2: During printing on reclaimed paper, multi part paper, envelope, label or roll paper
EPSON LQ-590/2090
Revision A
SAFETY APPROVALS
EXPENDABLES & OPTIONS Table 1-20. Expendables & Option
120 V version
Safe Safety ty stan standa dard rdss
UL 609 60950 50,, CSA CSA C22. C22.22 No. No. 6095 609500
EMI
FCC part 15 subpart B class B, CSA C108.8 class B
Code No. LQ-590
LQ-2090
S015337
S015355*3 S015336*3
High capacity cut sheet feeder (Bin 1)
C80638*
C80640*
Single bin cut sheet feeder (Bin 2)
C80637*
C80639*
Pull tractor unit
C80020*
C80021*
Ribbon cartridge (Black)
230 V version Options
Safety st standards
EN60950
EMI
EN55022 ( CISPR pub.22 ) class B AS/NZS.3548 class B
UPS Version
Roll paper holder
C811141
(#8310 *2)
C811141 (# (#8310 *2)
Safe Safety ty stan standa dard rdss
UL609 L60950 50,, CSA CSA C22. C22.22 No. No. 609 60950 EN60950
Front sheet guide
C81402*
C81403*
EMI
FCC part 15 subpart B class B, CSA C108.8 class B EN55022 (CISPR pub. 22) class B AS/NZS 3548 class B
Serial interface card
C82305* / C82306*
C82305* / C82306*
32KB in intelligent se serial in interface ca card
C82307* / C82308*
C82307* / C82308*
Local Talk I/F card
C82312*
C82312*
32KB IEEE-488 I/F card
C82313*
C82313*
CE MARKING
Expendables
Coax I/F card
C82314*
C82314*
C82315*
C82315*
Low Voltage Directive 73/23/EEC: EN60950
IEEE-1284 parallel I/F card
C82345*
C82345*
EMC Directive 89/336/EEC:
EpsonNet 10 Base 2/T Int. Print Server
C82362*
C82362*
EN55022 class B EN61000-3-2 EN61000-3-3 EN55024
INTERFACE
C81401*
Twinax I/F card
230 V version & UPS version
Front paper guide
C81400*
Bi-directional parallel interface (IEEE-1284 nibble mode supported) USB (ver1.1) I/F Type-B I/ F level 2 (Option) (Option)
Epso EpsonN nNet et 10/1 10/100 00 Base Base Tx Int. Int. Prin Printt Ser Serve verr EpsonNet 10/100 Base Tx Int. Print Server
C823 C82363 63** /C82 /C8236 364* 4* C823 C82363 63** *1/C82364* *1
C82384*
C82384*
EpsonNet 10/100 Base Tx Int. Print Server 2
C82391*
C82391*
EpsonNet 80 802.11b Wi Wireless Ex Ext. Pr Print Se Server
C12C82396*
C12C82396*
Note “*1 ”: When you you use Ethernet Ethernet interfa interface ce card card C82363*, C82363*, you need to attach attach the the optional optional interface adapter (C82525*) to the interface card. “*2” : This code code is not describe describedd in user’s manual manual.. “*3” : “S015335” is for use in America while “S0155336” for use in in other countries. countries.
CONTROL CODE
ESC/P 2 IBM PPDS emulation
EPSON LQ-590/2090
Revision A
PRINTABLE AREA
Table 1-21. Printable Area for Cut Sheet Single Sheet / Multi Part / Envelope
Cut sheets
LQ-590
PW (Width) PL (Length) LM (Left Margin) RM (Right Margin) TM (Top Margin) BM (Bottom Margin)
LQ-2090
Refer to “PAPER Refer to “PAPER SPECIFICATIONS” Table Table 1-3 on SPECIFICATIONS” Table Table 1-4 on pag pagee 10 for single sheet, Table Table 1-5 pag pagee 11 for single sheet, Table Table 1-6 on page page 11 for multi part or on page page 12 for multi part or Table Table 1-8 on ppage age 13 for envelope Table Table 1-8 on ppage age 13 for envelope 3 mm or more (PW<=209.2 mm) 26.9 mm or more (PW=257 mm)
3 mm or more (PW<=351.4 mm) 37.3 mm or more (PW=420 mm)
4.2 mm or more
Note : The maximum horizontal horizontal printable area is 203.2 mm (8 inches) for LQ-590 LQ-590 or 345.4 mm (13.6 inches) for LQ-2090.
Printable Area
Figure 1-2. Printable Area for Cut Sheet Sheet
EPSON LQ-590/2090
Revision A
Continuous paper
Label
PW
LM
RM
TM
PW
1.2mm or more
TM LM
PL PL
RM
Printable area
Printable Area BM 6.35mm or more BM
Figure 1-3. Printable Area for Continuous Continuous Paper
Figure 1-4. Printable Area for Label
Table 1-22. Printable Area for for Continuous Continuous Paper
Table 1-23. Printable Area for Label
Continuous Paper LQ-590
PW (Width) PL (Length) LM (Lef (Leftt Mar Margi gin) n) RM (Right Margin) TM (Top Margin) BM (Bottom Margin)
Label (Continuous Paper) LQ-2090
Refer to “PAPER SPECIFICATIONS” Table Table 1-11 1-11 on page page 14
Refer to “PAPER SPECIFICATIONS” Table Table 1-12 1-12 on page page 14
13 mm or more more (PW< (PW<=2 =241 41.3 .3mm mm)) 13 mm or more (PW<=377.8mm) 26 mm or more (PW=254 mm) 26 mm or more (PW=406.4 mm) 4.2 mm or more
Note : The maximum horizontal horizontal printable area is 203.2 mm (8 inches) for LQ-590 or 345.4 345.4 mm (13.6 inches) for LQ-2090.
LQ-590
PW (Width) PL (Length)
LQ-2090
Refer to “PAPER SPECIFICATIONS” Table Table 1-13 1-13 on page page 15
Refer to “PAPER SPECIFICATIONS” Table Table 1-14 1-14 on page page 15
LM (Left Margin) RM (Right Margin) TM (Top Margin) BM (Bottom Margin)
3 mm or more
EPSON LQ-590/2090
Revision A
Roll paper
PW LM
RM
TM
Printable area
Figure 1-5. Printable Area for Roll Paper Paper Table 1-24. Printable Area for Roll Paper Roll Paper
PW (Width) PL (Length) LM (Left Margin) RM (Right Margin) TM (Top Margin) BM (Bottom Margin)
Refer to “PAPER SPECIFICATIONS” Table Table 1-15 1-15 on page page 16 ----3 mm or more 3 mm or more 4.2 mm or more -----
EPSON LQ-590/2090
Revision A
1.2 Interface
Table 1-25. Connector pin assignment assignment (Forward channel) channel) (continued)
This printer provides bi-directional 8-bit parallel interface, USB interface and Type-B optional interface slot as standard.
1.2.1 Parallel interface (Forward channel)
Specifications
Tran Transm smis issi sion on mod mode: e:
8-bi 8-bitt para parall llel el,, IEEE IEEE-1 -128 2844 comp compat atib ibil ilit ityy mode mode
Adap Adapta tabl blee conn connec ecto tor: r:
57-3 57-303 0360 60 (Amp (Amphe heno nol) l) or equi equiva vale lent nt
Synchronization:
-STROBE pulse
Handshaking :
BUSY and -ACKNLG signals
Signal level:
TTL compatible (IEEE-1284 level 1 device)
Table 1-25. Connector pin assignment assignment (Forward channel)
Pin No.
Signal Name
Return GND Pin
IN/ Out*
Function description
12
PE
28
Out
This signal’s high level means that the printer p rinter is in a state of paper-out error.
13
SLCT
28
Out
Always at high level when the power to the printer is on.
14
-AFXT
30
In
Not used.
31
-INIT
30
In
This signal’s negative pulse initializes printer.
32
-ERROR
29
Out
This signal’s low level means the printer is in a state of error.
36
-SLIN
30
In
Not used.
18
Logic H
-
Out
This line is pulled up to +5 V through 3.9 k Ω resistor.
35
+5 V
-
Out
This line is pulled up to +5 V through 1.0 k Ω resistor.
Chassis
-
-
Chassis GND.
Signal Name
Return GND Pin
17
Pin No.
IN/ Out*
Function description
16, 33 19-30
GND
-
-
Signal GND.
1
-STROBE
19
In
Strobe pulse. Input data is latched at falling edge of the signal.
15, 34
NC
-
-
Not connected.
2
DATA1
20
In
Parallel input data to the printer.
3
DATA2
21
In
bit 1
4
DATA3
22
In
bit 2
5
DATA4
23
In
bit 3
6
DATA5
24
In
bit 4
7
DATA6
25
In
bit 5
8
DATA7
26
In
bit 6
9
DATA8
27
In
bit 7: MSB
10
-ACKNLG
28
This signal (negative pulse) indicates that the Out printer has received data and is ready to accept next one.
11
BUSY
29
Out
bit 0: LSB
This signal’s high level means that the printer is not ready to accept data.
Note : In/Out shows the direction of signal flow from the printer’s printer’s point of view.
EPSON LQ-590/2090
Revision A
Data transmission timing
DATA
data byte n+1
data byte n t hold
-STROBE t setup
t next
t stb
BUSY t ready
t busy
-ACKNLG t reply
t ack t nbusy
Figure 1-6. Data transmission transmission timing timing Table 1-26. Parameters Parameter
Minimum
Maximum
t setup
500 nsec
_
t hold
500 nsec
_
t stb
500 nsec
_
t ready
0
_
t busy
_
500 nsec
t reply
_
_
t ack
500 nsec
10 us
t nbusy
0
_
t next
0
_
t tout*1
_
120 nsec
t tin*2
_
200 nsec
Note Note “*1” : Rise Rise and and fall fall time time of outpu outputt signal signalss “*2” : Rise and and fall fall time of input input signals signals
BUSY signal is active (high level) under any of the following conditions:
In the process of receiving data
Input buffer full
-INT signal active (low level)
During hardware initialization
-ERROR or PE signal active (low level or high level, respectively)
In the self test mode
In the adjustment mode
In the default-setting mode
-ERROR signal is active (low level) l evel) under any of the following conditions:
In the condition of the printer hardware error (fatal error)
In the condition of the paper-out error
In the condition of the release lever error
In the condition of the paper eject error
PE signal is active (high level) under the following condition:
In the condition of paper-out error
EPSON LQ-590/2090
Revision A
1.2.2 Parallel interface (Reverse channel) Specifications
LQ-2090 When IEEE1284.4 is enabled,
Tra Transmi nsmiss ssio ionn mode mode :
IEEE IEEE-1 -128 2844 nibb nibble le mode mode
[00H][50H] MFG:EPSON;
Adap Adapta tabl blee conn connec ecto tor: r:
57-3 57-303 0360 60 (Amp (Amphe heno nol) l) or equi equiva vale lent nt
Synchronization :
Refe Referr to to th the IE IEEE-1 E-1284 sp specification
Handshaking :
Refer to the IEEE-1284 specification
Signal level:
TTL compatible (IEEE-1284 level 1 device)
Data transmission timing : Refer to the IEEE-1284 specification
Extens Extensibi ibility lity reques requestt :
The printe printerr resp respond ondss to to the the extens extensibi ibility lity reques requestt in in the affirmative, when the request is 00H or 04H, which mean; 00H : Request nibble mode of reverse channel transfer 04H : Request device ID in nibble mode of reverse channel transfer
Device ID: The printer sends the following device ID string when it is requested
LQ-590
CMD:ESCPL2,PRPXL24,BDC,D4; MDL:LQ-2090; CLS:PRINTER; DES:EPSON[SP]LQ-2090;
When IEEE1284.4 is disabled, [00H][4DH] MFG:EPSON; CMD:ESCPL2,PRPXL24,BDC; MDL:LQ-2090; CLS:PRINTER; DES:EPSON[SP]LQ-2090;
When IEEE1284.4 is enabled, [00H][4EH] MFG:EPSON; CMD:ESCPL2,PRPXL24,BDC,D4; MDL:LQ-590; CLS:PRINTER; DES:EPSON[SP]LQ-590;
When IEEE1284.4 is disabled, [00H][4BH] MFG:EPSON; CMD:ESCPL2,PRPXL24,BDC; MDL:LQ-590; CLS:PRINTER; DES:EPSON[SP]LQ-590;
EPSON LQ-590/2090
Revision A
Table 1-27. Connector pin assignment assignment (Reverse channel) Pin Pi n No. No. Si Sign gnal al Na Name
Return GND Pin
IN/ Out*
1.2.3 USB Interface
Function description
Specifications
Standard:
Based on “Universal Serial Bus Specifications Revision 1.1” “Universal Serial Bus Device Class Definition for Printing Devices Version 1.1”
Bit rate :
12 Mbps (Full Speed Device)
Data encording :
NRZI
bit 5
Adaptable connector :
USB Series B
bit 6
Recomm Recommend ended ed cable cable length length : 2 mete meters rs
1
HostClk
19
In
Host clock signal.
2
DATA1
20
In
Parallel input data to the printer.
3
DATA2
21
In
bit 1
4
DATA3
22
In
bit 2
5
DATA4
23
In
bit 3
6
DATA5
24
In
bit 4
7
DATA6
25
In
8
DATA7
26
In
bit 0: LSB
9
DATA8
27
In
10
PtrClk
28
Out
Printer clock signal.
bit 7: MSB
11
PtrBusy / DataBit-3,7
29
Out
Printer busy signal and reverse channel transfer data bit 3 or 7.
12
AckDataReq / DataBit-2,6
28
Out
Acknowledge data request signal and reverse channel transfer data bit 2 or 6.
13
Xflag / DataBit-1,5
28
Out
X-flag signal and reverse channel transfer data bit 1 or 5.
14
HostBusy
30
In
31
-INIT
30
In
32
-DataAvail / DataBit-0,4
29
Out
36
1284-Active
30
In
18
Logic-H
-
Out
This line is pulled up to +5 V through 3.9 k Ω resistor.
35
+5 V
-
Out
This line is pulled up to +5 V through 1.0 k Ω resistor.
17
Chassis
-
-
Chassis GND.
16, 33 19-30
GND
-
-
Signal GND.
15, 34
NC
-
-
Not connected.
Host Busy signal.
Connector pin assignment and signals : Table 1-28. Connector pin assignment assignment
Pin No.
Signal name
In/Out
-
Function description
Cable power. Maximum power consumption is 100mA
1
VCC
2
-Data
Bi-directional Data
3
+Data
Bi-directional Data, pull up to +3.3V via 1.5K Ω resistor
4
Ground
-
Cable ground
Not used. Data Available signal and reverse channel transfer data bit 0 or 4.
Pin #2
Pin #1
1284 active signal.
Note : In/Out refers to the direction direction of signal flow from the printer’s point of view.
Pin #3
Pin #4
Figure 1-7. USB Interface connector pin assignment
EPSON LQ-590/2090
Revision A
1.2.4 Optional Interface
1.2.5 Type-B Interface communication specification
Type-B optional interface cards are available.
Table 1-29. LQ-590 Reply message
ESC/P
Reply for Optional command (*: Reply for Type-B I/F Level 2 device: not described in user's manual ) Table 1-31. Reply for Optional Optional command
IBM PPDS Option command number
Main-Type
MT24p,PW80cl10cpi, PRG(W0xxxx)rev,AP500ma
MT24p,PW80cl10cpi, PRG(W0xxxx)rev,AP500ma
Product-Name
LQ-590
LQ-590
00h
No-operation
-----
-----
Emulation-Type ESCPL2,PRPXL24,BDC
ESCPL2,PRPXL24,BDC
01h
Start Hardware Reset
Accept*
Execute OK*
Entity-Type
EPSONPRPXL24
02h
Start Software Reset
Reject
-----
03h
Send Main System Type
Accept
04h
Send Name Data
Reject
05h
Inquire Name Data
Accept
Execute OK
06h
Send Product Name
Accept
Execute OK
EPSONLQ2
Table 1-30. LQ-2090 Reply message
Main-Type Product-Name
ESC/P
IBM PPDS
MT24p,PW136cl10cpi, PRG(W0xxxx)rev,AP500ma
MT24p,PW136cl10cpi, PRG(W0xxxx)rev,AP500ma
LQ-2090
LQ-2090
Emulation-Type ESCPL2,PRPXL24,BDC
ESCPL2,PRPXL24,BDC
Entity-Type
EPSONPRPXL24
EPSONLQ2
Command name
Reply-A
Reply-B
Execute OK -----
07h
Send Software Emulation Type
Accept
Execute OK
08h
Complete Buffered Data
Accept
Execute OK
09h
Stop Procedure
Reject
-----
0Ah
Return Buffered Data
Reject
-----
0Bh
Send Entity Type
Accept
Execute OK
0Ch
Send Status
Accept
Execute OK
0Dh
Quit Procedure
Reject
0Eh
Inquire ASCII Message
Reject
0Fh
Send ASCII Message
Accept
10h
(Reserved)
11h
Send All Entity Type
12h
Inquire Protocol
13h
(Reserved)
14h 15h 16h-1Fh
--------Execute OK
Unknown
-----
Reject
-----
Reject
-----
Unknown
-----
Inquire Emergency Message
Accept
Execute OK
Send Emergency Reply
Accept
Execute OK
Unknown
-----
(Reserved)
EPSON LQ-590/2090
1.2.7 IEEE1284.4 protocol The packet protocol described by IEEE1284.4 is supported on th e parallel I/F. Two function modes of IEEE1284.4 protocol, pro tocol, “Off” and “Auto”, are available and one of them is selected according to the value of Default setting. (See Section 1.3.5. 1.3.5. Default Setting). NOTE:Packet NOTE:Packet protocol option “Off” &“Auto” in Default setting mode are effective in not only parallel I/F but also USB I/F. In the case that data is printed from printer driver of Windows-based PC, select the packet protocol to "Auto".
Auto: Auto:
Communi Communicat cation ion is carr carried ied out out in the the convet convetion ional al mode mode until until a magic magic string (1284.4 synchronous commands) is received. By receiving a magic string, communication in IEEE1284.4 packet mode is started.
Off: Off:
Comm Commun unic icat atio ionn is carr carrie iedd out out in the the con conve veti tion onal al mod mode. e.
NOTE:The NOTE:The packet protocol of IEEE1284.4 allows a device to carry on multiple exchanges or conversations which contain data and/or control information with another device at the same time across a single point-to-point link. The protocol is not, however, a device control language. It does provide basic transport-level flow control and multiplexing services. The multiplexed logical channels are independent of each other and blocking of one has no effect on the others. The protocol operates over IEEE1284.
Revision A
EPSON LQ-590/2090
Revision A
1.3 Operation
1.3.2 Switches
This section describes the operations on this printer.
1.3.2.1 Operation in Normal Mode
1.3.1 Control panel
In the normal mode, pressing panel switches executes the following functions. Table 1-33. 1-33. Normal Mode
The control panel of this printer is equipped with 6 switches and 10 LEDs, which are located as shown below.
Switch
Font Pitch
• Sele Select ctss pitc pitch. h.
Reset (Font & Pitch)
• Rese Resets ts the the pri print nter er..
Pause Load/Eject LF/FF Tear Off/Bin
Figure 1-8. 1-8. Control Panel
Function
• • • • • • • • • •
Alternates Alternates printing printing and and no-pri no-printing nting status. status. Enables Enables Micro Micro Adjust Adjust function, function, holding holding it down down for 3 seconds. seconds. Loads Loads or ejec ejects ts the paper. paper. Executes Executes micro micro feed feed forward, forward, when when this functio functionn is enabled. enabled. Executes Executes line feed, pressing pressing it shortly shortly.. Executes Executes form form feed, feed, holding holding it down for a few few seconds seconds.. Executes Executes micro micro feed backwa backward, rd, when when this function function is enabled. enabled. Advances Advances continuo continuous us paper paper to the the Tear-Of Tear-Offf position. position. Selects Selects CSF bin 1/2 or or Card Card mode in friction friction mode. mode. Select Selectss font font and and draft draft quali quality. ty.
• Enter Enter or exit exit the the defaul defaultt settin settingg mode. mode. Menu (Pitch & Tear Off/Bin)
EPSON LQ-590/2090
Revision A
1.3.2.2 Operations at Power-on Power-on
1.3.3 Indicators ( LEDs )
Holding down the specified switch (switches) while turning on the power to the printer enables the special functions as listed below.
This printer has the following indicators to indicate its current condition, as shown in the table below:
Table 1-34. At Power-On Switches
1.3.3.1 Indications in Normal Mode
Function
Table 1-36. 1-36. Normal Mode
Load/Eject
LQ self test
LF/FF
Draft self test
Load/Eject & LF/FF
Data dump
Load Load/E /Eje ject ct & LF/ LF/FF FF & Pau Pause se
Clea Clearr EEP EEPRO ROM M
Tear Off/Bin & Load/Eject
Clear EEPROM for Driving Line count for ribbon change timing
Paper eject error
Pause
Bi-D adjustment
Head hot warning
Load/Eject & Pause
Panel lock out mode
Micro Adjust
LF/FF & Pause
Default setting for panel lock out
Tear off
_
Bin selection
_
LED Printer status
Pause *1
Paper Out *2
Tear-Off / Bin
Font
Pitch
On
_
_
_
_
Paper out error
On
On
_
_
_
Release lever error
On
_
_
_
_
On
Blink
_
_
_
Blink
_
_
_
_
Blink
_
_
_
_
_
*3
_
_
_
*3
_
_
Pause
*1
Pitch & Pause
Copy mode
Font Font & Pitc Pitchh & Tea Tearr Off Off/B /Bin in
Prog Progra ram m rel reloa oadd mod modee *2
The others
Not available
_
_
_
*4
_
Pitch selection
_
_
_
_
*5
Locked switch pressed
Note “*1 ”: This setting setting is is for for cuctom cuctomizat ization ion purpose purpose only.
Fatal error
“*2” “*2” : Refe Referr to 1.3.6.2 “Program Relode mode” for details.
1.3.2.3 Operation in Default Setting Setting Mode Table 1-35. Default Setting Setting Mode Switch
Font selection
Menu Menu (Pitc (Pitchh & Tear Tear Off/ Off/Bin Bin))
Enter Enter or exit exit the defaul defaultt sett setting ing mode. mode. Select the menu.
Set (Tear Off/Bin)
Changes the setting.
The others
Not available
*6
*6
_
_
_
Blink
Blink
Blink
Blink
Blink
*1. Pause ( Orange )
The “Pause” LED is on when the printer is in the pause status, and off when it is not in the pause status.
The “Pause” LED blinks when the Micro Adjust function is enabled or when the printer is in the head hot status.
See *6 for LED indication when a locked switch is pressed.
Function
Item ↑ (Font), Item ↓ (Pitch)
EPSON LQ-590/2090
Revision A
*2. Paper Out ( Red )
*5. Pitch ( Green )
The “Paper Out” LED is on when the printer is in the “paper out” status, and it blinks when the printer has developed a paper eject error, and it is off when the printer is not in such status.
Three LEDs display the status of Pitch selection.
See *6 for LED indication when a locked switch is pressed.
*3. Tear Off / Bin (Green)
Two LEDs display the status of CSF bin selection when cut sheet is used. Both LEDs are off when Bin1 is selected, only the right LED is on when Bin2 is selected, and only the left LED is on when Card mode is selected.
Both LEDs blink when continuous paper is in the Tear-off position and both LEDs are off when continuous paper is out of the Tear-off position.
Figure 1-11. Pitch LEDs
Both LEDs are on when the printer is in default setting mode. *6. LED indication when a locked switch is pressed
With panel lock out mode “On”, when a locked switch is pushed, the “Pause” LED and “Paper Out” LED flash simultaneously for three seconds or so.
Figure 1-9. Tear Off/ Bin LEDs Figure 1-12. LED indication when when a locked switch is pressed
*4. Font ( Green )
Three LEDs indicate the status of Font & Draft Quality selection. .
Figure 1-10. Font LEDs
NOTE: At At this time, buzzer does not sound.
EPSON LQ-590/2090
Revision A
1.3.4 Buzzer
1.3.5 Default Setting
This printer has the buzzer to indicate its current condition with the following indications.
You can change some parameters that the printer refers to at printer initialization.
1.3.5.1 Setting Method
The symbols used in the table below represent the following: “•” Short Beep Beep (Beepe (Beeperr sounds sounds about 100 ms and and interval interval is about100 about100 ms) ms)
Refer to the following flowchart for default setting. s etting.
“-” Long Beep Beep (Beepe (Beeperr sounds sounds about about 500 ms ms and interv interval al is about10 about1000 ms) NO
Print the current setting??
Table 1-37. Buzzer Status Status Printer status
Beep sounds
Panel operation
••• ••• ••• •
Fatal error *1
-----
Paper out error Release lever operation error Paper eject error
START
YES
Press Menu (Pitch & Tear Off/Bin) button.
The select sheet will be printed.
Language selection sheet.
Change the language?
YES
Press Item ↓ (Font) button to select the aimed language.
NO
Note “*1 ”: The printer printer detect detectss various various type of “Fatal “Fatal Error” Error” condition condition and and a type of error error is memorized in EEPROM of the main controller board. Refer to Chapter-3: 3.2.12 Fatal Error for details.
Press Set (Tear Off/Bin) button.
Press Set (Tear Off/Bin) button.
The language to be used is determined.
Referring to Font LEDs, press Item ↓ (Font) or Item or Item ↑ (Pitch) button to select the menu.
Referring to Pitch LEDs, press Set (Tear Off/Bin) button to change the setting value.
Finish?
NO
YES
Press Menu (Pitch & Tear Off/Bin) button. *
* The printer will exit from the default setting mode after storing the setting into non-volatile memory.
END
Figure 1-13. Flowchart for Default Setting Setting
EPSON LQ-590/2090
Revision A
Table 1-38. Setting Values Available in Default Setting Setting Mode (continued)
1.3.5.2 Setting Items Setting values available for default setting and factory settings are as shown in the table below: Table 1-38. Setting Values Available Available in Default Setting Setting Mode Setting / Value *2
Item
Print the current settings Page length for front tractor
Execute 3inch, 3.5inch, 4inch, 5.5inch, 6inch, 7inch, 8inch, 8.5inch, 11inch, 70/6inch, 12inch, 14inch, 17inch
Page length for rear tractor
3inch, 3.5inch, 4inch, 5.5inch, 6inch, 7inch, 8inch, 8.5inch, 11inch, 70/6inch, 12inch, 14inch, 17inch
Skip over perforation
OFF, ON
Auto tear off
OFF, ON
Auto line feed
OFF, ON
Print direction
Bi-D, Uni-d., Auto
Software
ESC/P2, IBM PPDS
0 slash
0, ∅
I/F mode
Auto, Parallel, USB, Option
Auto I/F wait time
10 seconds., 30 seconds.
Paral Parallel lel I/F I/F bidirect bidirection ional al time time OFF, OFF, ON Packet mode Auto CR (IBM
Auto, OFF
PPDS) *1
OFF, ON
A.G.M. (IBM PPDS)*1
OFF, ON
Character table
Standard version: Italic, PC437, PC850, PC860, PC863, PC865, PC861, BRASCII, Abicomp, Roman 8, ISO Latin 1, PC 858, ISO 8859-15 NLSP version: Italic, PC437, PC850, PC437 Greek, PC 853, PC855, PC852, PC857, PC864, PC866, PC869, MOZOWIA, Code MJK, ISO 8859-7, ISO Latin 1T, Bulgaria, PC774, Estonia, ISO 8859-2, PC866 LAT., PC866UKR, PCAPTEC, PC708, PC720, PC AR864, PC860, PC865, PC861, PC 863, BRASCII, Abicomp, Roman8, ISO Latin 1, PC858, ISO8859-15, PC771, PC437 Slovenia, PC MC, PC 1250, PC 1251
Setting / Value *2
Item
International character set for Italic U.S.A., Italic France, Italic Germany, Italic U.K., Italic Italic table Denmark 1, Italic Sweden, Italic Italy, Italic Spain 1 Font *3
OCR-B, Otator, Orator-S, Script C, Roman T, Sans serif H
Manual feed wait time
1 second, 1.5 seconds, 2 seconds, 3 seconds
Buzzer
OFF, ON
Auto CR ( IBM PPDS) *1
OFF, ON
Low-noise mode
OFF, ON
Note “*1 ”: This setting setting is is effective effective when IBM IBM PPDS emula emulation tion is selec selected. ted. “*2” : Settings Settings with bold weight weight mean the standard standard factory factory settings. settings. “*3” : One of these these fonts selected selected in the default setting is corresponding corresponding to others (other (other font) on the control panel. Following fonts are not selected in the default setting mode: HSD, Draft, Roman, Sans Serif, Courier, Prestige and Script
EPSON LQ-590/2090
Revision A
1.3.6 Special Operation Built-in special functions can be activated by turning on the printer while holding down the switches on the control panel in specific combination.
Table 1-39. Cleared Items and Values on EEPROM EEPROM (Standard Model) (continued) Item
Skip over perforation Input buffer
1.3.6.1 EEPROM Clear Function Function You can return some parameters into the factory settings to perform panel operation easily. Pressing Load/Eject & LF/FF & Pause switches at the same time while turning on the printer returns the default settings into the factory settings: Table 1-39. Cleared Items and and Values on EEPROM EEPROM (Standard Model)
Software
Value
Off On ESC/P2
0 slash
Off
Buzzer
On
Auto CR
Off
Tear-off adjustment value Tear-off wait time
0
Value
TOF minimum value
PC437
Paper edge length
Page length for rear tractor
11 inch
Paper length for rear manual insertion
22 inch
Page length for front tractor
11 inch
Paper length for front manual insertion
22 inch
Page length for CSF bin 1
22 inch
Sub number for customization
Standard
Page length for CSF bin 2
22 inch
Parallel I/F bidirectional mode
On
TOF adjustment value for rear tractor
8.5 mm
Packet mode for Parallel I/F (IEEE1284.4)
TOF adjustment value for front tractor
8.5 mm
TOF adjustment value for CSF bin 1
8.5 mm
TOF adjustment value for CSF bin 2
8.5 mm
Manual feed wait time
1.5 sec.
TOF adju djustment value for rear manua nual insertion
8.5 mm
IBM character table
Table2
TOF TOF adju djustm stment valu valuee for for fron frontt manua nual inse nsertio rtionn
8.5 8.5 mm
Bottom margin for rear tractor
11 inch
Bottom margin for front tractor
11 inch
Font Selection
Roman
Pitch selection
10cpi
Print direction setting
Bi-d
I/F mode selection
Auto
Auto I/F waiting time setting
Packet mode for USB (IEEE1284.4)
10 sec.
Auto line feed
Off
Auto tear off
Off
3 sec.
Character table selection
Item
4.2 mm 0
Auto same as ‘IEEE 1284.4 for Parallel I/F‘
EPSON LQ-590/2090
1.3.6.2 Program Relode mode
Revision A
3. When IPL file file download download completes, completes, the the all all three three LED of “Font” “Font” are are lit. lit. Font LED (right) will turn on at completing.
1. Turn the the printer printer on while while holding holding down [Font], [Font], [Pitch] [Pitch] and [TearOff/ [TearOff/Bin] Bin] switch. switch. The printer enters into this mode. Font LED (left) indicates entering this mode.
4. Wait a few few seconds, seconds, then, then, downloa downloadd the firmware firmware data; “Wxxxxx “Wxxxxx.mot” .mot” via the parallel port. Pitch LED (left) turns on and PaperOut LED turns blink during download.
2. Download Download the the IPL file; “IPLC540.mot” “IPLC540.mot” to the printer printer via the parallel parallel port. CAUTION
When transferring the data file from the PC, make an appropriate settings to the parallel port or use the binary data transfer utility, to avoid possible transmission interruption during the file downloading. Pitch LED (center) will turn on at completing.
Font LED (center) turns on during download.
5. Turn Turn the powe powerr off afte afterr comple completion tion of of downlo downloadi ading. ng.
EPSON LQ-590/2090
Revision A
1.3.6.3 Bi-D Adjustment Refer to the following flowchart for the Bi-D adjustment.
start
Turning the printer on while pressing Pause switch. The guide to adjust Bi-d. alignment in this mode is printed and first alignment pattern is printed. [ Step A ] Select most closely alignment number by pressing Item ↓ (Font) and Item ↑ (Pitch) switches. Font LEDs show the pattern number which is selected at that time. The selestion is advanced one by one as the switch is pressed, and the combination of On/Off/Blink of those three LEDs is also changed according to the selection.
[ Step B ] Fix the selected number by pressing Set (Tear Off/Bin) switch. Selected number is fixed and next alignment pattern is printed.
Repeat Steps A and B until finishing Bi-d. adjustment for LQ mode. Following adjustment is executed. 1. Bi-d. adjustment for high speed draft mode 2. Bi-d. adjustment for Bit Image (ESC * 26H) mode 3. Bi-d. adjustment for LQ mode
Turn the printer off. The setting is stored into EEPROM.
END
Figure 1-14. Bi-D Adjustment Adjustment Flowchart Flowchart
EPSON LQ-590/2090
Revision A
1.4 Dimensions and Weight
Physical specifications
LQ-590 Dime Dimens nsio ions ns:: Weight: Appearance:
LQ-2090 Dime Dimens nsio ions ns:: Weight:
589 589 mm mm (W) (W) x 350 350mm mm (D) (D) x 167. 167.5m 5mm m (H) (H) * Approximately 9.5 kg
* This measure excludes “the protrusions.” 414 414 mm mm (W) (W) x 350 350 mm (D) (D) x 167. 167.55 mm mm (H) (H) * Approximately 7.1 kg See th the fi figures be below low.
* This measure excludes “the protrusions.”
Figure 1-16. Physical Specifications Specifications for LQ-2090 Figure 1-15. Physical Specifications Specifications for LQ-590
EPSON LQ-590/2090
Revision A
Physical specifications including High capacity cut sheet feeder (Bin1)
LQ-590 Dime Dimens nsio ions ns:: Weight: Appearance:
414 414 mm mm (W) (W) x 434 434 mm mm (D) (D) x 378 378 mm (H) (H) * Approximately 8.4 kg See th the fi figures be below low.
LQ-2090 Dime Dimens nsio ions ns:: Weight:
589m 589mm m (W) (W) x 434 434mm mm (D) (D) x 378m 378mm m (H) (H) * Approximately 11.3 kg
* This measure excludes “the protrusions.”
* This measure excludes “the protrusions.”
437.5
Figure 1-17. Physical Specifications including including High capacity cut cut sheet feeder (Bin 1) for LQ-590
Figure 1-18. Physical Specifications including High capacity capacity cut sheet feeder (Bin 1) for LQ-2090
EPSON LQ-590/2090
Revision A
Physical specifications including Single bin cut sheet feeder (Bin2)
LQ-590 Dime Dimens nsio ions ns:: Weight: Appearance:
414 414 mm mm (W) (W) x 445 445 mm mm (D) (D) x 386 386 mm (H) (H) * Approximately 7.7 kg See th the fi figures be below low.
LQ-2090 Dime Dimens nsio ions ns:: Weight:
589m 589mm m (W) (W) x 445 445mm mm (D) (D) x 386m 386mm m (H) (H) * Approximately 10.3 kg
* This measure excludes “the protrusions.”
* This measure excludes “the protrusions.”
Figure 1-19. Physical Specifications including Single bin cut cut sheet feeder (Bin 2) for LQ-590
Figure 1-20. Physical Specifications including Single bin bin cut sheet feeder (Bin 2) for LQ-2090
EPSON LQ-590/2090
Revision A
Physical specifications including High capacity cut sheet feeder (Bin) & Single bin cut sheet feeder (Bin2)
LQ-590 Dime Dimens nsio ions ns:: Weight: Appearance:
414 414 mm mm (W) (W) x 564 564 mm mm (D) (D) x 408 408 mm (H) (H) * Approximately 9.0 kg See th the fi figures be below low.
Figure 1-21. Physical Specifications including including High capacity cut cut sheet feeder (Bin1) & Single bin cut sheet feeder (Bin 2) for LQ-590
LQ-2090 Dime Dimens nsio ions ns:: Weight:
589m 589mm m (W) (W) x 564 564mm mm (D) (D) x 408m 408mm m (H) (H) * Approximately 12.1 kg
* This measure excludes “the protrusions.”
Figure 1-22. Physical Specifications including High capacity capacity cut sheet feeder (Bin1) & Single bin cut sheet feeder (Bin 2) for LQ-2090
CHAPTER
2 OPERATING PRINCIPLES
EPSON LQ-590/2090
Revision A
2.1 Overview This printer is divided into several main components for easy removal and repair. The main components are:
C558MAIN:
Control board
C52 C524PS 4PSB/PSE/PS /PSH:
Powe ower supp supplly board
C524PNL:
Operation panel board
Prin Printe terr mec mecha hani nism sm::
Prin Printh thea ead, d, Carr Carria iage ge,, Rib Ribbo bonn mec mecha hani nism sm,, Pla Plate tenn gap adjustment mechanism, Paper feed mechanism, Release mechanism
Housing:
Upper case, Lower case, Rear sheet guide, Knob, Printer cover
C524 PSB/PSE/PSH Board
The C524 PSB/PSE/PSH power supply board consists of Transformer, Switching FET, Regulator IC, Diode bridge, Fuse, Photo-coupler, and so on.
CN1
Photo-coupler Switching FET
Transformer
C558 MAIN Board
CN2
The C558 MAIN Board consists of 2in1ASIC(CPU), EEPROM, PROM, DRAM, PF Motor Driver IC, CR Motor Driver IC driver elements, and so on. CR Motor Driver IC
PF Motor Driver IC Diode Bridge
Figure 2-2. C524 PSB/PSE/PSH PSB/PSE/PSH Component Component
Print Head Driver
2in1ASIC E01A29CA
M O R P
EEPROM
Figure 2-1. C558MAIN Component
M O R k s a M
DRAM
EPSON LQ-590/2090
Revision A
2.1.1.7 Sensors Tractor PG Detector
PF Motor Rear PE Detector
Table below lists the sensors of this printer.
Release Lever
Table 2-1. Sensors Sensor Platen Roller
Front PE detector
CR Guide Shaft
PE detection (Front)
Timing Belt CR Motor
PG Adjust Lever
HP De Detector
Carriage Un Unit
Means Switch rating
Switch mode
Means Switch rating
Switch mode
Means Switch rating
Switch mode
Means Switch rating
Switch mode
Means Switch rating
Switch mode
Means Switch rating
Switch mode
CR HP detection
Printhead
Outline
PE detection (Rear)
Release Detector
Ribbon Unit
Platen Gap detection
Figure 2-4. Printer Mechanism Outline Release Lever detection
Cover open detection
Mechanical contact 06~1.0 mA 5 VDC ± 5% (Resistance load) Within home (IN): CLOSE Out of home (OUT): OPEN Mechanical contact 06~1.0 mA 5 VDC ± 5% (Resistance load) There is paper: OPEN No paper: CLOSE Photo interrupter 5 VDC ± 5% (Resistance load) There is paper: OPEN No paper: CLOSE Mechanical contact 06~1.0 mA 5 VDC ± 5% (Resistance load) Normal mode (0~1): CL CLOSE Copy mode (2~7): OPEN Mechanical contact 06~1.0 mA 5 VDC ± 5% (Resistance load) Friction: OPEN Tractor: CLOSE Mechanical contact 06~1.0 mA 5 VDC ± 5% (Resistance load) Case opened: OPEN Case closed: CLOSE
Refer to for Disassembly/ Assembly
p.77
p.86
p.86
p.85
p.85
p.71
EPSON LQ-590/2090
Revision A
2.1.2 Circuit Operation
Table 2-2. Major Elements on MAIN Board (continued)
2.1.2.1 C558 MAIN Board
Elements
Location
Mask ROM
IC8
Table 2-2. Major Elements on MAIN Board Board
•
CPU/ASIC (2in1ASIC)
IC1
• • •
• •
PROM (Flash ROM)
IC4
EEPROM
IC11
Package: 240 SQ SQFP (0 (0.5 m mm m be between pi pins) Manufacturing process: 0.35µ Cell base IC CPU (H8S/2670 (Hitachi) equivalent) Operat Operating ing freque frequency ncy:: 24 MHz I/F section (E05B80CC (Hitachi series) equivalent) Operat Operating ing freque frequency ncy:: 48 MHz Func Functi tion on:: E05B8 E05B80C 0C Memory Memory cycle cycle:: 3 states states (1 state state 41.7 ns, ns, RDNn RDNn = 0, no CS CS assertion) Mechanical Controller section (E05B85YA (Fujimi) equivalent) Operat Operating ing freque frequency ncy:: 24 MHz Memory Memory cycle cycle:: 3 states states (1 state state 41.7 ns, ns, RDNn RDNn = 0, no CS CS assertion) Use: Program Type: MBM29LV800BA-90 Capacity: 8Mbit Package: 44SOP Bit configuration: 8/16 switching type Bus width: 16 bits Acce Access ss time time:: tCE tCE 181 181 ns or less less tACC 181 ns or less tOE 156 ns or less tDF 60 ns or less Memory Memory cycl cycle: e: 3 states states 1 weig weight ht (1 state 50.6 ns, RDNn = 0, no CS assertion)
Use:
Device: Capacity: Package:
Storage of default setting values and various parameters S-93C46ADFJ (SII) (10 ms ms/word writing) 1 kbits SOP8 pin (150 mil)
Specif Specifica icatio tion: n:
Function
Parallel IF circuit Location
Specif Specifica icatio tion: n: IEEE12 IEEE1284 84 compli compliant ant Nibble Nibble Data receiving system: Data transfer by DMA ACK pulse width: Can be selected Data transfer timing: Can be selected Transceiver IC: 74LVX161284 (FAIRCHILD) (IC2) Control Control circuit: circuit: Inside Inside the ASIC
The C558 MAIN board is the control circuit board of this printer. This board consists of several IC chips and drivers, as described in the table below:
Elements
Function
M80C942A (EPSON)
USB IF circuit
TYPE-B IF circuit
Univer Universa sall Serial Serial Bus Specific Specificati ation on Revision 1.1 Reception mode:Full speed mode (D+ signal line is pulled up to +3.3V with 1.5 k Ω) Ω) Pull-up of D+ signal line is not activated until the logic system becomes stable after power on. Receiving system: Bulk transfer / control transfer Data reception capacity: About 1.15 MB/s at peak (Bulk transfer) Control Control circuit: circuit: Inside Inside the ASIC Spec Specif ific icat atio ion: n: Leve Levell 2 Current consumption 0.5 A max. SSI is supported. Transmission rates supported are 600/1200/2400/4800/ 9600/19200 [bps]. Data reception rate (between TYPE B and Main Circuit Board) is 2 MB/s at peak. Data receiving system: DMA Data reception timing: Based on TYPE-B specification
EPSON LQ-590/2090
Revision A
2.1.2.2 C524 PSB/PSE/PSH PSB/PSE/PSH Power Supply Circuit This printer can be powered by one of the following th ree power supply boards: the C524PSB (120 V) board, the C524PSE (230 V) board, or the C524PSH (Universal) board. The function of the boards is the same, except for a difference in the primary circuitry. The power supply outputs the DC current necessary to drive the printer control circuit and drive the mechanism.
CIRCUIT CONSTITUTION
Figure 2-6 below shows the block diagram of this power supply circuit.
Figure 2-6. Power Supply Circuit Block Diagram Table 2-3. Circuit Constitution Block
Input Filter
Description
Figure 2-5. C558 MAIN Block Diagram
ZC-RCC Converter
+5 V Circuit
Inrush current preventive circuit with a power thermistor 42 V zero cross RCC of high performance Constant-voltage detecting circuit of Tr+ZD type Low power standby mode function by the ESAVE signal is supported Chopper circuit with a MOSFET discrete structure
EPSON LQ-590/2090
Revision A
PROTECTIVE FUNCTIONS
Table 2-6. Protective Functions Item
Output 1
Output 2
Overcurrent protection (OCP)
Dropping + cutoff
Cutoff
OCP reset method
Turning power off once and on again
Turning power off once and on again
0A
0A
Overvoltage protection (OVP)
Cutoff type
Cutoff type
OVP preset voltage
45 ~ 58 V
6~9V
Load short-circuit current
CHAPTER
3 TROUBLESHOOTING
EPSON LQ-590/2090
3.1 Overview The printer may exhibit different symptoms for the same problem, which makes troubleshooting more difficult. This section, however, provides si mple and effective ways to facilitate troubleshooting. In addition, the User's Manual for EPSON LQ-590/2090 describes detailed steps to be taken for recovery from typical errors. WARNING
When you disassemble the printer, pull the power cable and the interface cable out of the plug socket beforehand. When you touch any surface which can become hot, take care not to suffer a burn.
Revision A
3.1.2 Procedure for Troubleshooting Perform troubleshooting work according to the flowchart shown at right. CAUTION
Before starting disassembly and assembly work, read and understand thoroughly the contents of 3.1.3 of 3.1.3 “Preliminary Checks (p.53)” .. (p.53)”
Broken line arrow: Refer to depending on the result of diagnosis
START 3.1.3 Preliminary Checks (p.53)
CAUTION
Use only specified tools to avoid impairing the quality of the printer. Use only specified lubricants and adhesives. Carry out the adjustment by following the specified procedure. Wear a wrist strap to discharge static electricity from the human body, whenever possible.
3.2 Troubleshooting Based on Symptoms (p.54)
3.3 Troubleshooting for Individual Units (p.63)
3.1.1 Specified Tools This printer does not require any specified tools for troubleshooting. Adjustment (p.92) and Maintenance (p.99)
Figure 3-1. Troubleshooting Process Flowchart Flowchart
EPSON LQ-590/2090
Revision A
3.2.4 Abnormal paper feeding
Table 3-6. Abnormal paper feeding Step
Table 3-6. Abnormal paper paper feeding Step
Action and Question
Yes
No
Front PE (Paper End) Detector (p.86) Harne Harness ss of of Front Front PE Dete Detecto ctor r Rear PE Detector (p.86) Harne Harness ss of of Rear Rear PE Dete Detecto ctor r Release Detector (p.85) Harne Harness ss of of Relea Release se Dete Detecto ctor r Rear Paper Guide Assembly (p.89) PF Motor (p.82) PF Gear Train (p.83) C558 MAIN Board (p.73)
4
1
5
6 Problem solved
♦Is the problem solved?
♦Is the paper feeding direction switched when you operate the release lever? With power turned off, check to see if you can feed paper by turning the platen knob by hand.
PF Motor
7
Replace the PF Motor with a new one. ♦Is the problem solved? Main Board
8 Problem solved
Go to Step 3
Replace the defective sensors.
Go to Step 4
Defective sensor
3
Go to Step 5
Go to Step 6
Check PF Check PF Gear Train (p.83)
Go to Step 7
Check the paper feed mechanism
Replace the PF Motor.
Go to Step 8
Replace the Main Board.
Go to 3.2.11 Electrical Noise (p.61)
♦Can paper be fed by turning the platen knob by hand?
Go to Step 2
♦Is the problem solved? Replace the defective one of the following sensors with a new one: • Fron Frontt PE Det Detec ecto torr (CN6 (CN6)) • Rear Rear PE PE Dete Detect ctor or (CN (CN7) 7) • Relea Release se Detec Detector tor (CN11) (CN11)
Replace the defective harness.
Paper feed mechanism
Connection of sensor
2
Replace the defective harness of the following sensors with a new one: • Fron Frontt PE Det Detec ecto torr (CN6 (CN6)) • Rear Rear PE PE Dete Detect ctor or (CN (CN7) 7) • Releas Releasee Detec Detector tor (CN11) (CN11) ♦Is the problem solved?
♦Is the problem solved? Make sure that the following sensors are connected properly: • Fron Frontt PE Det Detec ecto torr (CN6 (CN6)) • Rear Rear PE PE Dete Detect ctor or (CN (CN7) 7) • Relea Release se Detec Detector tor (CN11) (CN11)
No
Paper changeover mechanism
Checking for foreign matters
Make sure that there are no foreign matters in the following areas. • Paper path • PF Gear Tr Train ain
Yes
Harness of sensor
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
• • • • • • • • • •
Action and Question
Replace the Main Board with a new one. ♦Is the problem solved?
EPSON LQ-590/2090
Revision A
3.2.5 Printing is is faulty during self-test, but carriage operation is normal
Table 3-7. Printing faulty during during self-test, but carriage carriage operation normal Step
Table 3-7. Printing faulty during during self-test, but carriage carriage operation normal Step
Action and Question
Yes
No
5
Fuse Printhead (p.76) CR Motor (p.80) PF Motor (p.82) C524PSB/PSE/PSH Board (p.75) C558 MAIN Board (p.73) Check the electric circuit and printer mechanism, and if they are not short-circuitted, replace the fuse with a new one.
Problem solved
Go to Step 2
Problem solved
Go to Step 3
Replace the Printhead.
Go to Step 4
Replace the CR Motor.
Go to Step 5
Connection with connectors
Make sure that all the connectors on the Main Circuit Board and Power Supply Board are connected properly. ♦Is the problem solved? Platen Gap
3
Adjust the Platen Gap. ♦Is the problem solved? Defective CR Motor
4
Replace the CR Motor with a new one. ♦Is the problem solved?
Replace the Power Supply Board with a new one. ♦Is the problem solved? Main Board
7
♦Is the problem solved?
2
Power Supply Board
6
Fuse
1
Replace the PF Motor with a new one. ♦Is the problem solved?
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
• • • • • •
Action and Question Defective PF Motor
Replace the Main Board with a new one. ♦Is the problem solved?
Yes
No
Replace the PF Motor.
Go to Step 6
Replace the Power Supply Board.
Go to Step 7
Replace the Main Board.
Go to 3.2.11 Electrical Noise (p.61)
EPSON LQ-590/2090
Revision A
3.2.6 Abnormal operation of Control Panel
3.2.7 Abnormal on-line operation (normal self-printing, though)
Table 3-8. Abnormal operation operation of Control Control Panel Step
Action and Question
Yes
No
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
1
Table 3-9. Abnormal on-line operation (normal self-printing, self-printing, though) though) Step
• Interf Interfac acee cable cable (USB (USB or para paralle llel) l) • C558 MAIN Board (p.73)
Connection of harness of Control Panel
Connection of interface cable
Make sure that the connectors of Control Panel ~ Main Circuit Board (CN1 ~ CN20) are connected properly.
Problem solved
Go to Step 2
1
3
Replace the Control Panel with a new one. ♦Is the problem solved? Main Board
4
Replace the Main Board with a new one. ♦Is the problem solved?
Make sure that the interface cable meets the specification and is connected properly. Interface cable
Replace the harness.
Go to Step 3
2
Replace the interface cable because the cable may be defective and thus can cause some trouble. ♦Is the problem solved?
♦Is the problem solved? Control Panel
No
Problem solved
Go to Step 2
Replace the interface cable.
Go to Step 3
Problem solved
Go to Step 4
Problem solved
Go to Step 5
Problem solved
Go to 3.2.11 Electrical Noise (p.61)
♦Is the problem solved?
Harness of Control Panel
Replace the harness of the Control Panel with a n ew one.
Yes
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
♦Is the problem solved?
2
Action and Question
• Contr ontrol ol Pane Panell (p.71) • Harne Harness ss of Contro Controll Pane Panell • C558 MAIN Board (p.73)
Firmware
Replace the Go to Step 4 Control Panel.
3
Upgrade firmware to the latest version. ♦Is the problem solved? EEPROM clearing
Replace the Main Board.
Go to 3.2.11 Electrical Noise (p.61)
4
Clear EEPROM to restore the default settings. ♦Is the problem solved? Main Board
5
Replace the Main Board with a new one.ÅB ♦Is the problem solved?
EPSON LQ-590/2090
Revision A
3.2.8 Abnormal operation of ribbon ribbon Table 3-10. Abnormal operation operation of ribbon ribbon Step
Action and Question
Yes
No
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
• • • • •
Ribb Ribbon on Car Cartr trid idge ge Timing Be Belt CR Motor (p.80) Ribbon Drive (RD) Assembly (p.91) C558 MAIN Board (p.73)
Ribbon Cartridge
1
Defective Ribbon Cartridge
Go to Step 2
♦Can the Ribbon Cartridge be turned by hand? Defective Carriage
2
Check the operation of the Carriage and Timing Belt.
Go to Step 3
♦Does the carriage and belt operate smoothly?
Check the operation of the Ribbon Drive Assembly. Go to Step 3 ♦Does the Ribbon Drive Assembly turn smoothly? Main Board
4
Replace the Main Board with a new one. ♦Is the problem solved?
Go to 3.2.9 Abnormal operation of Carriage Unit (p.60)
Defective Ribbon Drive Assembly
3
Replace the Ribbon Cartridge.
Problem solved
Replace or lubricate the Ribbon Drive Assembly. Go to 3.2.11 Electrical Noise (p.61)
EPSON LQ-590/2090
Revision A
3.2.9 Abnormal operation of Carriage Unit Unit
Table 3-11. Abnormal operation operation of Carriage Carriage Unit (continued) Step
Table 3-11. Abnormal operation operation of Carriage Carriage Unit Step
Action and Question
Yes
No
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
• • • • • •
Timing Be Belt CR Motor (p.80) HP (Home Position) Detector (p.77)
♦Is the problem solved?
7
Main Board
8 Problem solved
Go to Step 2
Go to Step 3
Replace the Timing Belt.
Go to Step 4
Replace or lubricant the Ribbon Drive Assembly.
♦Is the problem solved? Timing Belt
2
Check to see if the driving path of the Timing Belt is obstructed with foreign matters or the belt is damaged. ♦Is the Timing Belt free from obstruction or damage? Ribbon Drive Assembly
3
Operate the Timing Belt by hand and check the movement. ♦Does the Timing Belt operate smoothly? Checking the operation of the Carriage Unit
4
Check to see if you can move the Carriage Unit on the SHAFT,CR,GUIDE from side to side by hand.
Go to Step 5
Defective HP Detector
Replace the HP Detector with a new one. ♦Is the problem solved?
Refer to Lubrication (p.101)
♦Does the Carriage Unit operate smoothly?
5
Replace the CR Motor with a new one. ♦Is the problem solved?
Ribbon Drive (RD) Assembly (p.91) C558 MAIN Board (p.73)
Checking the connection of connectors
1
6
Replace the harness of the HP Detector with a new one. Defective CR Motor
Harness of HP Detector
Make sure that the following connectors are connected properly. • HP Dete Detect ctor or (CN8 (CN8)) • CR Moto Motorr (CN (CN12 12))
Action and Question Defective harness of HP Detector
Replace the HP Detector.
Go to Step 6
Replace the Main Board with a new one. ♦Is the problem solved?
Yes
No
Replace the harness of the HP Detector.
Go to Step 7
Replace the CR Motor.
Go to Step 8
Replace the Main Board.
Go to 3.2.11 Electrical Noise (p.61)
EPSON LQ-590/2090
Revision A
3.2.10 Faulty print
3.2.11 Electrical Noise Table 3-12. Faulty print
Step
Action and Question
Table 3-13. Troubleshooting for Electrical Noise Yes
No
Step
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
• C524PSB/PSE/PSH Board (p.75) • C558 MAIN Board (p.73)
Ribbon Ma Mask Printhead (p.76) Print rinthe head ad FFC FFC C558 MAIN Board (p.73) Remove the Ribbon Mask from the Printhead, and make sure that the Ribbon Mask is free from deformation or damage.
Defective Printhead
Replace the Printhead with a new one. ♦Is the problem solved? Platen Gap Adjustment (p.94)
3
Adjust the platen gap. ♦Is the problem solved? Printhead FFC
4
Replace the Printhead FFC with a new one. ♦Is the problem solved? Main Board
5
No
Parts below can be the source of this error (Chapter ( Chapter 4 Disassembly and Assembly )
External noise
Problem solved
Go to Step 2
Replace the Printhead.
Go to Step 3
1
♦Is the problem solved?
2
Yes
• • • •
Ribbon Mask
1
Action and Question
Replace the Main Board with a new one. ♦Is the problem solved?
Problem solved
1. Check to see see if within 3 m from the printer printer there is another electrical apparatus, such as a generator, radio transmitter or an apparatus incorporating a motor. 2. Turn off the power power to the electrica electricall apparatus apparatus in question or move the printer to a position at least 6 m distant from the apparatus.
Go to Step 2
Problem solved
Go to Step 3
Ask the customer for repair of the AC power connection.
Go to Step 4
Install the grounding screw properly.
Go to Step 5
Ensure grounding.
Replace the Power Supply Board.
Go to Step 7
Replace the Main Board.
Problem solved
♦Does the problem with electrical noise still occur? AC grounding
2 Go to Step 4
Check the AC power connection. ♦Is the AC power cable connected and grounded properly? Harness of Power Switch
Replace the Printhead FFC.
Go to Step 5
Replace the Main Board.
Go to 3.2.11 Electrical Noise (p.61)
3
1. Remove the Printer Mechanism. (p.79) 2. Replace the HOUSING HOUSING ASSY.,LOWER ASSY.,LOWER with a new one. ♦Is the cable grounded properly? Grounding of circuit boards
4
1. Remove Remove the Shield Shield Cover. Cover.(p.73) 2. Make sure that the screws screws for the Power Supply Board is tightened securely. ♦Is grounding ensured? Power Supply Board
5
Replace the Power Supply Board with a new one. ♦Is the problem solved? Main Board
6
Replace the Main Board with a new one. ♦Is the problem solved?
EPSON LQ-590/2090
Revision A
3.3 Troubleshooting roubleshooti ng for Individual Individua l Units
Table 3-16.
3.3.1 Main Component Checking Point The following components can be checked with a simple measurement tool, such as a multi-meter, easily.
Motors Table 3-15. Motor Coil Resistance Resistance Test Points Motor
Test Pin Number
Test Method*
Meter Reading
PF Motor (CN13)
1 and 3, 2 and 4
Place one lead on pin 1 (pin2) and the other 16.0 Ω ± 10% lead on pin3 (pin 4) on each of the test pins (at 25 °C per to check the two motor phases. one phase)
CR Motor (CN12)
Common pin: 5 Test pins: 1, 2, 3 and 4
Place one lead on pin 5 and the other lead on 2.7 Ω±10% each of the 4 test pins to check the two motor (at 25°C per phase. one phase)
Common Line
Corresponding Wires
C1
1, 8, 16, 24
C2
2, 6, 10, 18
C3
3, 7, 11, 15
C4
4, 12, 20, 21
C5
5, 9, 13, 17
C6
14, 19, 22, 23
Not Notee : 1~24: Wire Wire numb number erss (Ref (Refer er to “Figure 2-3“ 2-3“ in Chapter 2 for wire numbers.) C1~ C6: C6: Comm Common on term termin inal alss T: Thermistor terminal (The contact of the connector and FFC is positioned at the bottom side of the connector.)
Note “* ”: Set the meter meter to to ohms. Then Then disconne disconnect ct the Motor Motor from from the Main Main Board Board and check check it with printer power off.
Printhead
Test Test Method Method
: For exampl example, e, plac placee one one lead lead on pin pin C1 and and the the other other lead lead on Test pin 1 to check #1 pin of the Printhead solenoid. Test pin numbers match the printhead solenoid (dot wire) numbers.
NOTE: Set the meter to o hms. Then disconnect the Motor from the Main Board and check it with printer power off.
Spec Specif ific icat atio ions ns : 31.3 31.3 ± 2.2 2.2 Ω (at 25°C) Figure 3-2. Printhead Connector Connector Pin Assignment Assignment
CHAPTER
4 DISASSEMBLY AND ASSEMBLY
EPSON LQ-590/2090
4.1 Overview This section describes procedures for disassembling and assembling EPSON FX-890/ 2190. Unless otherwise specified, disassembled units or components can be reassembled by reversing the disassembly procedure. Therefore, no assembly procedures are included in this section. Precautions for any disassembly or assembly procedure are described under the heading “CHECK POINT”. Any adjustments required after disassembling the units are described under the heading “ADJUSTMENTS”.
4.1.1 Disassembly Precautions Follow the precautions below when disassembling the printer. WARNING
CAUTION
Before disassembling, assembling or adjusting the printer, disconnect the power supply cable from the AC power socket. Failure to do so might cause personal injury. Be careful with the Printhead when you handle it as it may be very hot right after printing. Do not touch the heat sink attached to the switching FET (Q1) on the power supply board right after power off, as i t may be very hot.
To maintain efficient printer operation, take the precautions below: Use only the recommended tools for maintenance work. Use only the recommended lubrications and adhesives (See Chapter 6.) mann er described in this Adjust the printer only in the manner manual. Always wear gloves for disassembly and reassembly to avoid iujury from sharp metal edges. To protect sensitive microprocessors and circuitry, use static discharge equipment, such as anti-static wrist straps, when accessing internal components. Be aware that the existing drawings for FX-890 are substituted for FX-2190. It is because no exclusive drawings for FX-2190 has been made since the major mechanical difference between FX-890 and FX-2190 is width only.
Revision A
4.1.2 Tools and Instruments The table below lists the tools and the instruments required for disassembling, assembling or adjusting the printer. Use only tools that meet these specifications. Table 4-1. Tool and Instrument List Name
Specification
EPSON Part No.
Phillips Screwdriver
No.2
B743800200
Phillips Screwdriver
No.1
B743800100
Box Driver
7.0mm Diagonal
B741700200
Tweezers
-
B741000100
Round-nose pliers
-
B740400100
Thickness gage
-
B776702201
Soldering iron
-
B740200100
E-Ring holder
Size:#6
B740800800
NOTE: All All tools and instruments listed above are commercially available.
EPSON LQ-590/2090
Revision A
4.1.3 Service Check After Repair Repair
Table 4-2. Repair Status Status Check List (continued)
After completing repair of the product, use the check lis t shown below to check the status of the repaired product and overall repair work performed before returning the product to the users. This list can be used as a record of all service works performed with the product.
Category
Operation
Component
Component
Item to Check
Printhead
Do all wires print properly?
Carriage Mechanism
Dose the carriage move smoothly? • Noisy • Any dirt dirt or or exce excessi ssive ve oil? oil? Is the CR Motor at the normal temperature? (Not too hot?)
Paper Feed Mechanism
Printer Mechanism Paper Path
Does paper advance smoothly? * Noisy? * Paper is jamming?
Self-Test
Was the self-test printing successful?
On-line Test
Was the on-line printing successful?
Checked, OK
Checked, OK
Checked, OK Not necessary ROM
Checked, OK Not necessary
Checked, OK
Not necessary
Do all types of paper advance smoothly?
Is the tractor feeding paper smoothly?
Are all paper paths clear of obstructions?
Is the the ribb ribbon on mask free ree of dam damage age?
Adjustment
Platen-Gap
Is the gap adjusted correctly? (PG = 0.38 ( 0.02mm )
Checked, OK
Bi-D Alignment
Is the Bi-Directional alignment made properly?
Checked, OK
Version
Latest version =
Ribbon Cartridge
Has the ribbon cartridge been removed from the printer?
Checked, OK
Attachments
Have all relevant attachments been packed together with the printer?
Not necessary
Is the PF Motor at the normal temperature? (Not too hot?)
Is the plate free of damage? Ribb Ribbon on Mask Mask
Status
Checked, OK
Not necessary
Checked, OK
Not necessary
Checked, OK
Not necessary
Checked, OK
Not necessary
Checked, OK
Not necessary
Checked, OK
Not necessary
Packing
Status Checked, OK
Table 4-2. Repair Status Status Check List Category
Item to Check
Not necessary
Not necessary
Not necessary
Not necessary Checked, OK Not necessary Not necessary
Checked, OK Not necessary
EPSON LQ-590/2090
Revision A
Table 4-3. List of Screws Used Used
4.1.3.1 Abbreviations for Small Parts The table below lists the abbreviations used in this manual for small parts, such as screws and washers. Table 4-3. List of Screws Used
No.
Name and specification
11
PRINTER MECHANISM MOUNTING SCREW
No.
Name and specification
1
CBS (M3x6)
12
CP (M3x4)
2
CBS (M3x12)
13
SHAFT,MOUNT,CR (M8x10)
3
PLASTIC HEAD P TITE,4X13
14
CB (M3x6)
15
CBS (M3x10)
4
CBP (M4x12) 16
Hexagon nut normal(M4)
5
CBS (M3x8)
6
CBP (M3x8)
7
CBP (M3x12)
8
CBS (M3x4)
9
CBS (M3x8) C(P2)
10
CB (0) (M4x8)
Shape
Shape
EPSON LQ-590/2090
Revision A
4.2 Main Components Disassembly This section provides the disassembly procedures. The basic order for disassembly is shown in the flowchart below. The exploded diagrams are also provided in the “Exploded Diagrams” Diagra ms” (page (page 115) 115).. Refer to them to see how components are engaged with each other if necessary.
START Main Components Disassembly
Pre-disassembly Procedures (p.69)
Printhead (p.76)
HP (Home Position) Detector (p.77)
Upper Housing (p.71)
C558 MAIN Board (p.73)
C524PSB/PSE/PSH Board (p.75)
Printer Mechanism Disassembly (p.76) Printer Mechanism (p.79)
PF Motor (p.82)
PG (Platen Gap) Detector (p.85)
Release Detector (p.85)
Front PE (Paper End) Detector (p.86)
Rear PE Detector (p.86)
PF Gear Train (p.83) CR Motor (p.80)
Carriage Assembly (p.87)
Rear Paper Guide Assembly (p.89)
Ribbon Drive (RD) Assembly (p.91)
Figure 4-1. 4-1. Disassembly Flowchart
Platen (p.78)
EPSON LQ-590/2090
Revision A
4.2.1 Pre-disassembly Procedures Paper Eject Cover
Remove the Paper Guide Assembly, top cover, front cover, paper eject cover, knob and tractor unit.
Paper Guide Assembly. (See Figure 4-2)
Top cover.(See Figure 4-2)
Knob. (See Figure 4-2)
Paper eject cover. (See Figure 4-3)
Front cover. (See Figure 4-4)
Tractor unit. (See Figure 4-5)
Figure 4-3. Paper Eject Cover Removal Removal
Paper Guide Assembly
Top cover
Front Cover
Figure 4-4. 4-4. Front Cover Cover Removal Removal Knob
Figure 4-2. Pre-Disassembly
EPSON LQ-590/2090
Revision A
CAUTION
Figure 4-5. 4-5. Tractor Unit Unit Removal Removal
Remove the paper eject cover and the tractor unit by pu shing and releasing the hooks at both sides. When remounting them, be sure to snap these hooks on the projecting parts.
EPSON LQ-590/2090
Revision A
4.2.2 Upper Housing
CBS Screws (3x8) x2 Tightening Torque: 1.08 ±0.1 N.m
1. Perform Pre-Disassembly. (p.69)
CBS Screw (3x8) Tightening Torque: 0.58-0.78 N.m
2. Remove 3 CBS (M3x8) (M3x8) screws screws securing securing the upper housing to the lower case. (See Figure 4-6)
3. Set the the relea release se lever lever to the the fricti friction on feed feed side. side. 4. Lifting Lifting the front front side of of the upper upper housing housing a little, little, disenga disengage ge the hook hook found found at the left of the panel assembly. 5. Push out out the left left side side of the the Panel Panel Assembly Assembly slightly slightly and and take take it out out by shifting shifting it to the left a little, and disconnect the Panel FFC.
When installing the Panel Assembly, lead the lead wires of the Case Open Sensor as shown below:
Upper Housing Lead wires of the Case Open Sensor
Panel Assembly Connector
Hooks
Panel FFC Panel Assembly
Harness, Panel
Figure 4-6. Upper Housing Housing Removal Removal 1
EPSON LQ-590/2090
Revision A
6. Open Open the upper upper housin housingg from the the front front side, side, and and remove remove it. it.
CAUTION
When assembling the upper housing, put the catching holes in the upper housing on the hooks at the rear side of the lower case at first, then close the housing. (See Figure 4-7) Mount the Panel assembly onto the upper housing before installing the upper housing assembly. Sheet, Release, Cap can be assembled after the upper housing assembly is installed.
Sheet, Release, Cap
Catching holes
Hooks
Figure 4-7. Upper Housing Housing Removal Removal 2
EPSON LQ-590/2090
Revision A
4.2.3 C558 MAIN Board CAUTION
CBS Screws (3x6) x5 Tightening Torque: 0.58-0.78 N.m
The C558 MAIN Board has the mechanical drive power supply voltage (+42V, Vp) management circuit and an electrical characteristic of the components composed of this circuit is measured with the custom instruments and regulated at the assembly process. Never attempt to replace any components of this circuit on the board, and doing so resulted in damaging the unit. Be careful with the edges of the shield plate, as they are very sharp. Be sure to match the connector colors with each other.
CBP Screws (3x12) x2 Tightening Torque : 0.78- 0.98 N.m Shield Cover
No screw here (Screw for tightening the Upper Housing together must be installed later)
1. Perform Pre-Disassembly. (p.69) 2. Remove the Upper Housing. (p.71) 3. Remove 5 CBS (M3x6) screws screws and 2 CBP (M3x12) (M3x12) screws screws securing securing the the shield shield cover to the Printer Mechanism and lower housing. Then T hen remove the shield cover. (See Figure 4-8)
4. Disconnect Disconnect all the the connec connectors tors connec connected ted to the the C558 C558 MAIN Board. (See Figure 4-9)
Figure 4-8. C558 MAIN Board Removal 1 Table 4-4.
CN No.
CN5 CN6 CN7 CN8 CN11 CN12 CN13 CN14 CN15 CN16 CN19 CN20
Pins
Color
2 2 3 2 2 5 4 10
Blue Black White White Yellow Red White (FPC) (FPC) White (FPC)
2
Connected to
PG Detector Front PE Detector Rear PE Detector HP Detector Release Detector CR Motor PF Motor C524PSB/PSE/PSH Board Printhead Printhead Fan Panel
Figure 4-9. C558 MAIN Board Removal 2
EPSON LQ-590/2090
Revision A
5. Remove the 2 CBS (M3x12) (M3x12) screws securing securing the the COVER,CON COVER,CONNECTOR,U NECTOR,UPPER PPER or the optional Type-B I/F Board to the I/F GROUNDING PLATE. (See Figure 4-10)
6. Remove the 6 CBP (M3x12) (M3x12) screws screws securing securing the C558 MAIN MAIN Board Board to the lower lower case. 7. Lift the the rear rear side of the the I/F GROUND GROUNDING ING PLATE PLATE slightly slightly and remove remove the I/F I/F GROUNDING PLATE together with the C558 MAIN Board.
CBP Screws (3x12) x6 Tightening Torque: 0.9±0.1 N.m
GROUND PLATE, I/F, UPPER GUIDE,I/F,BOARD
8. Remove the 3 CP (M3x4) (M3x4) screws screws securing securing the I/F I/F GROUNDIN GROUNDING G PLATE PLATE to the the C558 MAIN Board. Then remove the I/F GROUNDING PLATE. Lead the lead wires as shown below: I/F GROUNDING PLATE CP Screws (3x4) x3 Tightening Torque : 0.48±0.1 N.m C558 MAIN Board
CBP Screws (3x12) x2 Tightening Torque: 0.9±0.1 N.m
ADJUSTMENT REQUIRED
When replacing the C558 MAIN Board, be sure to reload the firmware (Program) first. Refer to “1.3.6.2 Program Relode mode” for details. Once the C558 MAIN Board has been replaced, be sure to make the following adjustments with the adjustment program. Refer to “Adjustment “Adjustment Program” Program” on page -97. : • Bi-D Adjustment Adjustment • EEPROM EEPROM Writing Writing • USB-ID USB-ID Input Input
COVER, CONNECTOR,UPPER
C524MainB_R01.eps
Figure 4-10. C558 MAIN Board Removal 3
EPSON LQ-590/2090
Revision A
4.2.4 C524PSB/PSE/PSH Board 1. Perform Pre-Disassembly. (p.69) 2. Remove the Upper Housing. (p.71) CN1
3. Remo Remove ve the the shi shiel eldd cove cover. r. (See Figure 4-8)
CBP Screws (3x12) x2 Tightening Torque: 0.88±0.1 N.m
4. Disconnect Disconnect the harness harness from the the connector connector CN14 on on the C558 MAIN MAIN Board. Board. (See Figure 4-11)
5. Disconnect Disconnect the power power cable cable from the the connector connector CN1 on the C524PSB/P C524PSB/PSE/PSH SE/PSH Board. 6. Remove the 2 CBP (M3x12) (M3x12) screws securing securing the C524PSB/PSE/P C524PSB/PSE/PSH SH Board Board to the Lower Case, and remove the C524PSB/PSE/PSH Board.
WARNING
C524PSB/PSE/PSH Board
CN14
Before disassembling, assembling or adjusting the printer, disconnect the power supply cable from the AC power socket. Failure to do so might cause personal injury. Do not touch the heat sink attached to the switching FET (Q1) on the power supply board right after power off as it may be very hot.
Figure 4-11. C524PSB/PSE/PSH Board Removal Removal
EPSON LQ-590/2090
Revision A
4.3 Printer Mechanism Disassembly Ribbon Mask
4.3.1 Printhead 1. Remo Remove ve the the top top cove cover. r.(See Figure 4-2) 2. Remove the 2 CBS C (P2) (P2) (M3x8) (M3x8) screws screws securing securing the Printhe Printhead ad to the Carriag Carriagee Assembly.(See Figure 4-12)
CBS C(P2) Screws (3x8) x2 Tightening Torque : 0.7±0 0.7±0.1 .1 N.m N.m
3. Discon Disconnec nectt the head head FFC FFC from the the Printhe Printhead ad and and remove remove it. it.
WARNING
Be careful with the Printhead when you handle handl e it, as it may be very hot right after printing. Head FFC Printhead
ADJUSTMENT REQUIRED
After installing the Printhead, make the following adjustments: • Platen Gap Adjustment (p.94) • Bi-D Alignment Adjustment (p.96)
Ribbon Mask Holder
Hook
When installing the Printhead with the Head FFC, put the Head FFC under the hook of the carriage base. Make sure that the Head FFC is propoerly connected to the printhead. Do not connect the Head FFC at angle, to a connector either on the printhead or the C558 MAIN Board. When replacing the Printhead, be sure to replace the Ribbon Mask Holder (with the Ribbon Mask) at the same time. All related parts are available as a kit as below. HEAD KIT, ASP Code: 1279490
Figure 4-12. 4-12. Printhead Removal
EPSON LQ-590/2090
Revision A
4.3.2 HP (Home Position) Detector 1. Remo Remove ve the the top top cove cover. r. (See Figure 4-2) 2. Release Release the hook hook attaching attaching the HP detect detector or to the Printer Printer Mechanism, Mechanism, and and remove remove it. (See Figure 4-13)
Hook
Harness
3. Disconnect Disconnect the harness harness of the detector detector from from the detector detector connect connector. or.
HP Detector
Hook
Figure 4-13. HP Detector Removal
EPSON LQ-590/2090
Revision A
4.3.3 Platen
CBS Screws (3x8) x2 Tightening Torque: 0.9±0.1N.m
1. Perform Pre-Disassembly. (p.69) 2. Remove Remove the the 2 CBS (M3x8 (M3x8)) screws screws securi securing ng the COVE COVER,PL R,PLATE ATEN. N. (See Figure
Bushing, 8, Left
4-14)
3. Rotating Rotating the teeth teeth of of the Bushing, Bushing, 8, Right and and Bushing Bushing 8 Left Left forward, forward, disengage disengage them from the Left/Right Side Frame. 4. Move the the carriage carriage to the right right end, lift the left side side of the platen platen slightly, slightly, move move the carriage to the center and remove the platen to the left. (See Figure 4-15) CAUTION
COVER, PLATEN
Take care not to cut your finger on the metallic frame or on the PAPER GUIDE ASSY., SUPPORT.
When installing the COVER, PLATEN, make sure that the hook on the right side of the th e COVER, PLATEN is engaged with the gear shaft on the right side of the Printer Mechanism Assy properly.
Bushing, 8, Right
Figure 4-14. Platen Removal Removal 1
COVER, PLATEN
ADJUSTMENT REQUIRED
After installing the Platen, make the following adjustment: • Platen Gap Adjustment (p.94)
Figure 4-15. Platen Removal Removal 2
EPSON LQ-590/2090
Revision A
4.3.4 Printer Mechanism 1. Perform Pre-Disassembly. (p.69)
CBB (W13, M3x14) Screws x4 Tightening Tightening Torque: 1.1± 0.1N.m
2. Remove the Upper Housing. (p.71) 3. Remo Remove ve the the shi shiel eldd cove cover. r.(See Figure 4-8) 4. Disconnect Disconnect all the the connec connectors tors connec connected ted to the the C558 C558 MAIN Board. (See Figure 4-9)
5. Remove the 2 CBP (M3x8) (M3x8) screws screws securin securingg the MOUNT HOUSING HOUSING to the lower lower housing, and remove the MOUNT HOUSING. (See Figure 4-16) 6. Remove the 4 CBB (W13, M3x14) M3x14) screws, screws, and remove the Printer Printer Mechan Mechanism ism by lifting it up.
ADJUSTMENT REQUIRED
CBP Screws (3x8) x2 Tightening Torque : 1.1±0.1N.m
After installing the Printer Mechanism, make the following adjustment: • Bi-D Alignment Adjustment (p.96)
MOUNT, HOUSING
Figure 4-16. Printer Mechanism Mechanism Removal Removal 1
EPSON LQ-590/2090
Revision A
4.3.5 CR Motor 1. Remove the Printer Mechanism. (p.79) 2. Rele Releas asee the the tens tensio ionn spri spring ng.. (See Figure 4-17) 3. Disengage Disengage the the TIMING TIMING BELT,CR BELT,CR from from the the CR Motor Motor pinion pinion and and hang hang it on on the Hanger. CR Motor
TIMING BELT,CR
Tension Spring
Hanger
Figure 4-17. CR Motor Removal 1
EPSON LQ-590/2090
Revision A
4. Remove the 2 SHAFT,MOU SHAFT,MOUNT,CR NT,CR (M3x12) (M3x12) screws screws securing securing the CR CR Motor Motor assembly to the FRAME,SUB,RIGHT, and remove the CR Motor. (See Figure 4-18)
5. Remove the 2 CB (M3x6) (M3x6) screws screws securing securing the CR Motor to the MOUNTING MOUNTING PLATE,MOTOR,CR, and remove the CR Motor. ADJUSTMENT REQUIRED
After installing [CR Motor] or [TIMING BELT,CR], make the following adjustment: • Bi-D Alignment Adjustment (p.96)
CR Motor
SHAFT,MOUNT,CR Screws (3x10) x2 Tightening Torque: 0.9±0.1N.m
MOUNTING PLATE,MOTOR, CR
Position the CR Motor assembly on the MOUNTING PLATE,MOTOR,CR correctly as shown below; CB Screws (3x6) x2 Tightening Tightening Torque: 0.9± 0.1N.m
MOUNTING PLATE, MOTOR,CR
Cable
CR Motor
Lead the FFC and lead wires as shown below:
Figure 4-18. CR Motor Removal 2
EPSON LQ-590/2090
Revision A
4.3.6 PF Motor 1. Remove the Printer Mechanism. (p.79) 2. Releas Releasee the motor motor harne harness ss from the the Printe Printerr Mechan Mechanism. ism. (See Figure 4-19) CBS Screw (3x10) Tightening Tightening Torque: 0.9± 0.1N.m
3. Locate Locate the release release lever lever (Lever, (Lever, Release) Release) in the the forefront forefront positio positionn (Tractor (Tractor Position). 4. Remove the 2 (CBS (M3x10), (M3x10), CB (M3x8)) (M3x8)) screws screws securin securingg the PF Motor Motor to the FRAME,SUB,RIGHT, and remove the PF Motor.
PF Motor CAUTION
If the release lever is set to the Friction feeding position, PF Motor is not released.
CB Screw (3x8) Tightening Tightening Torque: 0.9± 0.1N.m
HOLDER, CABLE
Figure 4-19. PF Motor removal
EPSON LQ-590/2090
Revision A
4.3.7 PF Gear Train 1. Remove the Printer Mechanism. (p.79) 2. Remove the PF Motor. (p.82) 3. Locate Locate the release release lever lever (Lever, (Lever, Release) Release) in the the forefront forefront positio positionn (Tractor (Tractor Position). 4. Remove the head head FFC FFC from the FRAME,SU FRAME,SUB,RIGH B,RIGHT T of the the Printer Printer Mechanis Mechanism. m. (See Figure 4-20)
5. Remove Remove the the 2 (CBS (CBS (M3x8) (M3x8),, CB (M3x8) (M3x8))) screws screws secu securing ring the FRAME,SUB,RIGHT, and remove the FRAME,SUB,RIGHT. FRAME,SUB,RIGHT
Head FFC CBS Screws (3x8) Tightening Tightening Torque: 0.9± 0.1N.m
CB Screws (3x8) Tightening Torque : 0.9±0.1N.m
Figure 4-20. PF Gear Train Disassembly 1
EPSON LQ-590/2090
Revision A
Lubrication is necessary at two points. (For details, refer to “Lubrication” (p.101) in Chapter 6.) Pay attention to the gear engagement position of the LEVER,RELEASE. For assembly, follow the following procedure: 1. Make certain that the SHAFT,RELEASE SHAFT,RELEASE is in the Tractor position. 2. Install the INTERMITTENT INTERMITTENT GEAR in a position as shown shown below. 3. Install the LEVER,RELEASE and LEVER, RELEASE, TRANSMISSION in the Tractor position. After installing the FRAME,SUB,RIGHT, move the LEVER,RELEASE from the Tractor position (forefront) to the Friction position and vice versa to confirm proper gear engagement.
SPUR GEAR,21
SPUR GEAR,34.5
COMBINATION GEAR,31,5,8
LEVER, RELEASE
INTERMITTENT GEAR
SPUR GEAR,27 LEVER, RELEASE
SPUR GEAR, 34.5
INTERMITTENT GEAR
pfgeartrain02.eps
SPUR GEAR,34.5 SPUR GEAR,34
CAM,CLUTCH, TRACTOR
CAM, CLUTCH, TRACTOR
Figure 4-21. PF Gear Train Disassembly 2
EPSON LQ-590/2090
Revision A
4.3.8 PG (Platen Gap) Detector
4.3.9 Release Detector
1. Remove the Printer Mechanism. (p.79)
1. Remove the Printer Mechanism. (p.79)
2. Release Release the 2 clips attach attaching ing the PG detector detector to to the LEFT LEFT FRAME FRAME in the Printer Printer Mechanism, and remove the detector. (See Figure 4-22)
2. Release Release the 2 clips attachi attaching ng the Release Release detector detector to the FRAME,SUB, FRAME,SUB,RIGHT RIGHT in in the Printer Mechanism, and remove the detector. (See Figure 4-23)
3. Discon Disconnec nectt the the harne harness ss from from the the dete detecto ctor. r.
3. Discon Disconnec nectt the the harne harness ss from from the the dete detecto ctor. r.
Harness Clips Clips
LEFT FRAME
PG Detector
Release Lever Detector FRAME,SUB, RIGHT
Harness
Figure 4-22. 4-22. PG Detector Removal
Figure 4-23. Release Detector Detector Removal Removal
EPSON LQ-590/2090
Revision A
4.3.10 Front PE (Paper End) Detector
4.3.11 Rear PE Detector
1. Remove the Printer Mechanism. (p.79)
1. Remove the Printer Mechanism. (p.79)
2. Release Release the 2 clips attach attaching ing the front PE PE detector detector to the the Rear Rear Paper Guide Assembly, and remove the detector. (See Figure 4-24)
2. Hold Hold the the Print Printer er Mech Mechani anism sm hori horizon zontal tally. ly.
3. Discon Disconnec nectt the the harne harness ss from from the the dete detecto ctor. r.
4. Release Release the 2 notches notches on the the Rear Paper Paper Guide Guide Assembly Assembly securing securing the detecto detector, r, and slide the detector toward rear a little. Then remove the detector by pull ing it downward. (See Figure 4-25)
Front PE Detector
3. Release Release the 2 clips clips securing securing Rear PE detector detector to to Rear Rear Paper Paper Guide Guide Assembly. Assembly.
5. Discon Disconnec nectt the the harne harness ss from from the the dete detecto ctor. r. Clips
Harness Rear PE Detector
Harness Rear Paper Guide Assembly
1
2
1
Figure 4-24. Front PE Detector Removal Removal
Figure 4-25. Rear PE Detector Removal Removal
EPSON LQ-590/2090
Revision A
4.3.12 Carriage Assembly 1. Remove the Printer Mechanism. (p.79) 2. Remo Remove ve the the Head Head FFC. FFC. (See page 76) 3. Remove the Platen. (p.78) 4. Remove the CR Motor. (p.80) 5. Remove the hexagon hexagon nut (M4) (M4) and the the washer washer securing securing the LEVER,G, LEVER,G,ADJUST ADJUST to the SHAFT,CR,GUIDE, and remove the lever. (See Figure 4-26)
BUSHING, PARALLEL, ADJUST
6. Remove the BUSHING,PARA BUSHING,PARALLEL,A LLEL,ADJUST DJUST to turn turn the the SHAFT,C SHAFT,CR,GUID R,GUIDE. E.
LEVER, G, ADJUST
Hexagon Nut (4) Tightening Torque: tamporary(about 2Kgfcm)
Figure 4-26. Carriage Assembly Assembly Removal Removal 1
EPSON LQ-590/2090
Revision A
7. Move the the Carriage Carriage Assembl Assemblyy to the right end, end, and and remove remove it from the rack rack of the the FRAME,FRONT with the SHAFT,CR,GUIDE. (See Figure 4-27) 8. Release Release the TIMING BELT from from the 2 clips clips at the the bottom bottom of the Carriage Carriage Assembly. ADJUSTMENT REQUIRED
TIMING BELT
After installing the Carriage Assembly, make the following adjustments: • Platen Gap Adjustment (p.94) • Bi-D Alignment Adjustment (p.96)
Clips
Lubrication is necessary at three points. (For details, refer to “Lubrication” (p.101) in Chapter 6.) When attaching the TIMING BELT to the Carriage Assembly, secure the TIMING BELT with the left and right clips in the Carriage Assembly, as shown below, and ensure there is no slack in the TIMING BELT. Clip
TIMING BELT
SHAFT, CR, GUIDE
Make sure that the groove for the rail in the front of the Carriage Assembly is fitted on the rail of the FRAME, FRONT.
Frame, FRONT
Carriage Assembly
Figure 4-27. Carriage Assembly Assembly Removal Removal 2
EPSON LQ-590/2090
Revision A
4.3.13 Rear Paper Guide Assembly 1. Remove the Printer Mechanism. (p.79)
CBS Screws (3x6) x3 Tightening Tightening Torque: 0.9± 0.1N.m
2. Remove the Platen. (p.78) 3. Remove the hexago hexagonn nut and the the washer washer securing securing the LEVER,G, LEVER,G,ADJUS ADJUST T to the the SHAFT,CR,GUIDE, and remove the lever. (See Figure 4-26)
Holder Pulley Driven
4. Remove the BUSHING,PARA BUSHING,PARALLEL,A LLEL,ADJUST DJUST to turn turn the the SHAFT,C SHAFT,CR,GUID R,GUIDE. E. (See Figure 4-26)
5. Remo Remove ve the the har harne ness ss for for PG Det Detec ecto tor. r. (See page 85) 6. Remo Remove ve the the har harne ness ss for for HP Det Detec ecto tor. r. (See page 77) 7. Remove the CBS (M3x8) screw securing securing the Holder Holder Pulley Pulley Driven Driven to to the LEFT FRAME, and remove the Holder Pulley Driven. (See Figure 4-28) 8. Remove 3 CBS (M3x8) screws securing securing the the LEFT LEFT FRAME FRAME in the Printer Printer Mechanism.
LEFT FRAME
CBS Screws (3x8) Tightening Torque: 0.9±0.1N.m
9. Remove the Head FFC from from the the FRAME,REAR FRAME,REAR in the the Printer Printer Mechanism. Mechanism. And release all the cables from the hooks on the FRAME,REAR. (See Figure 4-29)
Figure 4-28. Rear Paper Guide Guide Assembly Removal 1 FRAME,SUB,RIGHT
Head FFC FRAME,REAR
3
Figure 4-29. Rear Paper Guide Guide Assembly Removal 2
EPSON LQ-590/2090
Revision A
10. Release Release the cables cables from the HOLDER,CA HOLDER,CABLE BLE on the RIGHT FRAME, FRAME, and remove the HOLDER,CABLE from the RIGHT FRAME. 11. Remove the the CBS (M3x8) screw screw securing securing the FRAME,REAR FRAME,REAR to the RIGHT RIGHT FRAME, and remove the Rear Paper Guide Assembly. (See Figure 4-30)
FRAME,REAR
12. Push and slide the clip on the left side of the Rear Paper Guide Assembly Assembly laterally, and separate the Rear Paper Guide Assembly and the FRAME, REAR from each other.
Clip
Lubrication is necessary. (For details, refer to “Lubrication” (p.101) in Chapter 6.) When attaching the Holder Pulley Driven to the LEFT FRAME, put the hook of the Holder Pulley Driven on the shaft of driven pulley at the Ribbon Drive Assembly. Holder Pulley Driven
Shaft Pulley Driven
Install the RIGHT FRAME and Rear Paper Guide Assembly so that the Release Shaft is positioned as shown below and the LEVER,RELEASE is in the Pull Tractor position (forefront position). After installation, make certain that the LEVER, RELEASE moves smoothly. Position Roller Assy.,PF as shown
Release Shaft CBS Screws (3x8) Tightening Torque: 0.9±0.1N.m
HOLDER, CABLE
Figure 4-30. Rear Paper Guide Guide Assembly Removal 3
EPSON LQ-590/2090
4.3.14 Ribbon Drive (RD) Assembly 1. Remove the Printer Mechanism. (p.79)
Revision A
CBS C(P2) Screw (3x8) Tightening Tightening Torque: 0.9± 0.1N.m
2. Remove the Platen. (p.78) 3. Remove the hexago hexagonn nut and the the washer washer securing securing the LEVER,G, LEVER,G,ADJUS ADJUST T to the the SHAFT,CR,GUIDE, and remove the lever. (See Figure 4-26) 4. Remove the BUSHING,PARA BUSHING,PARALLEL,A LLEL,ADJUST DJUST to turn turn the the SHAFT,C SHAFT,CR,GUID R,GUIDE. E. (See Figure 4-26)
Ribbon Drive Assembly
5. Remo Remove ve the the har harne ness ss for for PG Det Detec ecto tor. r. (See page 85) 6. Remove Remove the the harne harness ss for HP HP Detect Detector or from from the LEFT FRAME FRAME.. (See page 77) 7. Remove the CBS (M3x8) screw securing securing the Holder Holder Pulley Pulley Driven Driven to to the LEFT FRAME, and remove the Holder Pulley Driven. (See Figure 4-28)
FRAME, FRONT
8. Remove the 3 CBS (M3x8) (M3x8) screws screws securing securing the LEFT LEFT FRAME FRAME in the the Printer Printer Mechanism, and remove the LEFT FRAME. (See Figure 4-28) 9. Rele Releas asee the the tens tensio ionn spri spring ng.. (See Figure 4-17) 10. Remove the the CBS C (P2) (M3x8) screw screw and the CBP (M3x8) (M3x8) screw screw securing securing the Ribbon Drive Assembly. (See Figure 4-31) 11. Release Release the Ribbon Ribbon Drive Assembly Assembly engaging engaging with with the ROLLER ASSEMBLY,DRIVE, and remove the Ribbon Drive Assembly.
ADJUSTMENT REQUIRED
After installing the Ribbon Drive Assembly, make the following adjustments: • Platen Gap Adjustment (p.94) • Bi-D Alignment Adjustment (p.96)
When installing the Ribbon Drive Assembly, perform lubrication according to “Lubrication” (p.101) in Chapter 6.
ROLLER ASSEMBLY, DRIVE
CBP Screw (3x8) Tightening Tightening Torque: 0.9± 0.1N.m
Figure 4-31. Ribbon Drive Drive Assembly Removal 1
CHAPTER
5 ADJUSTMENT
EPSON LQ-590/2090
Revision A
5.1.2 Adjustment Tools
5.1 Adjustment Overview
Table 5-2 below shows the tools required for each adjustment.
5.1.1 Required Adjustment This section describes the adjustments required after specified parts are removed or replaced. Table 5-1 below shows the parts removed/replaced and corresponding adjustments required.
Required Adjustment / Setting Bi-d Platen Gap F/W Reload Adjustment
Printhead Removal or Replacement
O
O
---
Printer Mechanism Replacement
---
O
---
Main Boar Replacement
- --
O
O
Timing Belt Replacement
O
O
---
Platen Replacement
O
---
---
Carriage Assembly Replacement
O
O
---
CR Motor Replacement
---
O
---
EEPROM Clear
- --
O
-- -
NOTE 1:“ 1:“ O” :Adjustment required. NOTE 2:“---” 2:“---” :Adjustment not required.
Adjustment
Platen Gap Bi-d Adjustment
Table 5-1. Required Adjustment Removal or Replacement Requiring Adjustment
Table 5-2. 5-2. Adjustment Tools Required Tool
Thickness gauge (0.37 mm, 0.40 mm) • Adjust Adjustme ment nt program program (for (for LQ-59 LQ-590/2 0/209) 09) • Control Control panel panel operation operation (built-in (built-in function) function)
EPSON LQ-590/2090
Revision A
5.2 Adjusting and Resetting Resetting the the Printer 5.2.1 Platen Gap Adjustment When the SHAFT,CR,GUIDE or BUSHING,PARALLEL,ADJUST is rotated or reinstalled, or printing is too faint or stained, the Platen Gap adjustment must be performed by the following procedure:
Ribbon Mask
1. Remove the Upper Housing. (p.71) 2. Remove the Printhead. (p.76) 3. Using tweezers, tweezers, remove remove the Ribbon Mask from from the the ribbon ribbon mask mask holder holder of the Carriage Assembly.
CAUTION
Take care not to deform or damage the Ribbon Mask during its removal or installation.
4. Attach Attach the the Print Printhea headd onto onto the Carr Carriag iagee Assemb Assembly. ly. 5. Set the PG Adjustmen Adjustmentt Lever Lever (Lever,Gap (Lever,Gap,Adjus ,Adjust) t) in the the position position “0”. “0”. (Position (Position the the lever in the bottom one of the lever positioning posi tioning holes in the Frame Assy.,Left.) 6. Rotate the SHAFT,CR, SHAFT,CR,GUIDE GUIDE so that the large large countersin countersinkk at the the left end of the the shaft comes upward. 7. Loosen slightly slightly the hexagon hexagon nut securing securing the the PG Adjust Lever to the SHAFT,CR,GUIDE. 8. Tilt the the printer printer forward forward until until the Printhead Printhead becomes becomes vertica verticall to the reference reference surface (e.g. the top surface of a table or desk). Put a support (e.g. a stand) underneath the printer to hold the printer at the position. 9. Insert a screwdriv screwdriver er into into the countersink countersink located located at the left left end of the the SHAFT,CR,GUIDE. 10. Move the the Carriage Carriage Assembl Assemblyy to the right end. end. Figure 5-1. Platen Gap Adjustment 1
EPSON LQ-590/2090
Revision A
11. Put an adjustment adjustment gauge between between the Printhea Printheadd and the PLATEN verticall vertically, y, and judge and adjust the platen gap by referring to Table 5-3 below. For adjustment, turn the SHAFT,CR,GUIDE toward the PLATEN (widen) or toward the front (lessen). (See Figure 5-2, 5-2, Figure 5-3) 5-3)
Normal Mode
Copy Mode
Table 5-3. Criteria for Platen Gap Adjustment Gauge
Criterion
0.37 mm mm
Falls by its own weight
0.40 mm mm
Does not fall by its own weight
12. After completion of the adjustment adjustment with the carriage located at the right end, make the judgment with the carriage at the left end and then at the center.
] m m [ ) G P ( p a G n e t a l P
13. When the adjustmen adjustmentt is completed, completed, put the printer down down and tighten the hexagon hexagon nut and the washer securing the adjust lever. 14. Attach Attach the ribbon ribbon mask onto onto the ribbon ribbon mask holder holder.. Paper Thickness [mm] CHECK POINT
After the adjustment, perform printing and make certain that there is no problem with print quality. Single sheet: The printed side of paper must be free from soiling caused by rubbing with the ribbon. Multi-part form: The copy paper must be free from blurs or traces of rubbing. Continuous paper (perforated uncut paper): There must be no catch at perforations in uncut paper.
Figure 5-2. Platen Gap Adjustment 2 Note1: The numbers followed with # represent represent the Adjust Adjust Step Numbers. Numbers. 2: The paper thickness thickness at the boundary of two adjacent Platen Platen Gaps is included in the paper thickness range for the lower Platen Gap. 3: “Platen Gap” means means the clearance, clearance, as shown in Figure.7, between between the platen and the wire end without the ribbon or paper in between. The Platen Gap must always meet the appropriate range as shown in Figure 6 under any conditions. 36.3 mm or more φ 36.3
CAUTION
Do not rotate the PLATEN during the adjustment. Be sure to set the Adjust Lever to the position “0” when adjusting the platen gap.
Platen
Head Nose
Wire end Platen Gap
Figure 5-3. Platen Gap Adjustment 3
EPSON LQ-590/2090
Revision A
5.2.2 Bi-D Alignment Adjustment
5.2.2.1 Adjustment with Control Control Panel
When the combination of the printer mechanism and the main board is changed and/or any components relating to the carriage drive mechanism is replaced, the bi-directional printing alignment (Bi-D Alignment) must be adjusted. The Bi-D Alignment can be made either with the built-in function which can be activated from the control panel or the adjustment program for this model.
For actual operation procedure, refer to “1.3.6.3 Bi-D Adjustment” on page 37 .
ADJUSTMENT STANDARD
With the printed adjustment pattern, check to see if the alignment level meets the following adjustment standard while adjusting it. Gap
[Alignment = Bad]
[Alignment = OK]
Table 5-4. Adjustment Standard CR Position
Center Left / Right
Print Mode
Gap Level
All modes
0.05mm or less
Mode0
0.20mm or less
Mode1
0.15mm or less
Mode2
0.10mm or less
5.2.2.2 Adjustment with the Adjustment Program Refer to “5.3 Adjustment Program” on page 97 for details.
EPSON LQ-590/2090
5.3 Adjustment Program
Revision A
There are various adjustment/settings items required to be performed after the repair of the unit consisting certain assembly/components replacement or disassembly. In order to facilitate performing all necessary adjustment and settings for each individual repair content, and exclusive adjustment program is available. This section describes the basics on how to use the adjustment program.
Program Type This adjustment program has two operational modes and each mode is designed to be selectively performed depending on your needs.
Particular Adjsutment Mode
Sequential Adjustment Mode
5.3.1 Preparation SYSTEM REQUIREMENT
PC Windows-based PC equipped with a parallel and a USB interface.
OS Windows 98 SE, Me, 2000, XP
INSTALLATION
Decompress the supplied archive file into a single file folder, and the program can be executed by double-clicking on the program icon.
5.3.2 Running the Program To run the program, double-click on the program icon [APLQ5902090_Ver10E]. When the main menu is displayed, select appropriate value for each menu item.
Model name LQ-590, LQ-2090
Destination EAI, NLSP (Select the product configuration that matches to your market)
Port Select Select the port to which the target printer is connected. By clicking on [Refresh] button, the program searches for the printers connected to all ports, and you can easily find the target printer.
EPSON LQ-590/2090
Revision A
5.3.3 Operational Mode
5.3.3.2 Sequential Adjustment Mode
There are two operational modes and basic operation with each mode is as described below.
This mode is specifically designed to assist repair/service technicien; to perform all necessary adjustment/settings in proper order. A wizard like menu help you to perform necessary adjustment in accordance with the type of repair you made.
5.3.3.1 Particular Adjustment Mode This mode is useful if specific adjustment item or setting is need to be performed individually. All available adjustment or setting s etting item can be selected manually and can be performed independently.
Click
Double-click
CHAPTER
6 MAINTENANCE
EPSON LQ-590/2090
6.1 Overview 6.1.1 Preventive Maintenance Preventive maintenance is important to keep the printer in the best condition and to prevent potential troubles from occurring. If necessary, use denatured alcohol to clean the exterior cases. Use a vacuum cleaner to remove dust and paper debris accumulated in the printer.
WARNING
CAUTION
Before disassembling, assembling or adjusting the printer, disconnect the power supply cable from the AC power socket. Failure to do so might cause personal injury. Be careful with the Printhead when you handle it as it may be very hot right after printing. Do not touch the heat sink attached to the switching FET (Q1) on the power supply board right after power off, as i t may be very hot.
Do not use thinner, trichloroethylene, or ketone-based solvents on the plastic components of the printer. Never use the oil and grease other than those specified in this manual; use of different type of lubricant can damage the printer or its components.
Revision A
EPSON LQ-590/2090
Revision A
6.2 Lubrication
Table 6-2. Lubrication Points
Influence that oil and grease give is considerably large especially in low temperature. Therefore, EPSON has tested and analyzed various types of oil and grease extensively, and found the oil and grease listed below most applicable to the printer.
Assy to be Lubricated (Reference Page)
PF Gear Train (p.83)
Table 6-1. Lubrication Type
Name
Quantity
Available
Part No.
Oil
O-14
40 g
EPSON
1049820
Grease
G-26
40 g
EPSON
1080614
Lubrication Point
SPUR GEAR, 34.5 (shaft hole) SPUR GEAR, 34.5 (shaft hole)
Lubricant must be applied during the reassembling process.
Fig. No.
G-26 Figure (one grain of rice) 6-1
Shaft A Shaft B Shaft C
G-26 Figure (a half grain of rice) 6-2
Ratchet,RD
G-26 (a half grain of rice)
SPUR GEAR, 21 CAUTION
Lubricant (Amount of Application)
Ribbon Drive (RD) Plain Washer, 3.1x0.2x6, S/NA Assembly (p.91) E-Ring,3x0.45x7,S/NA Plain Washer, 4.1x0.2x7.8, S/NA
G-26 (one grain of rice) Figure 6-3 G-26 (a half grain of rice)
Combination Gear, 8.19 (upper gear teeth) Combination Gear, 8.19 (lower gear teeth) Spur Gear, 25.5 (gear teeth)
G-26 Figure (a half grain of rice) 6-4
Combination Gear, 7.5,15 (lower gear teeth) Roller Assy, PF, Drive
Rear Paper Guide Assembly (p.89) Carriage Assembly (p.87)
Holder, PF, Shaft (Holder, PF, Shaft~Plain Washer) Holder, PF, Shaft (Holder, PF, Shaft ~ Direction of Leaf Spring) Shaft Release (Sliding points) 6 points FX-890: FX-219 190: 0: 8 poin points ts FX-2 Oil pad
LEFT FRAME
PG Adjusting holes (7 holes)
(p.87)
Roller, PF, Drive (Upper side of the hole)
G-26 Figure (a half grain of rice) 6-5
G-26 Figure (a half grain of rice) 6-6 O-14 (0.2 ± 0.03 cc)
Figure 6-7
G-26 Figure (a half grain of rice) 6-8
EPSON LQ-590/2090
Revision A
SPUR GEAR, 34.5
G-26
G-26
Figure 6-1. Lubrication Point Point (PF Gear Train) Train) G-26
G-26
SPUR GEAR, 21
G-26 Ratchet,RD
Figure 6-2. Lubricating Point Point (RD Assy Assy 1)
Figure 6-3. Lubricating Point Point (RD Assy Assy 2)
EPSON LQ-590/2090
Revision A
G-26 Combination Gear, 8.19
Shaft Release
G-26
G-26
Spur Gear, 25.5 Combination Gear, 7.5,15
G-26
Figure 6-6. Lubricating Points Points (Shaft Release)
Figure 6-4. Lubricating Points (RD Assy 3)
O-14 Direction of Leaf Spring
G-26
Holder, PF, Shaft
Holder, PF, Shaft
Plain Washer
Figure 6-5. Lubricating Points (Roller Assy, PF, Drive) Drive)
Figure 6-7. Lubricating Points Points (Carriage Assembly)
EPSON LQ-590/2090
Revision A
G-26
Roller, PF, Drive
PG Adjusting holes (7 holes)
Figure 6-8. Lubricating Points (LEFT FRAME)
CHAPTER
7 APPENDIX
EPSON LQ-590/2090
Revision A
7.1 Connector Summary The primary components of the printer are connected as shown below; Table 7-1. Connector Summary Board
C558 MAIN Board
C524 PSB/PSE/PSH Board
Control Panel
Connector No.
Pin
Description
CN1
36
Parallel I/F
CN2
36
Type-B I/F (Option)
CN3
4
USB I/F
CN5
2
PG Detector
CN6
2
Front PE Detector
CN7
3
Rear PE Detector
CN8
2
HP Detector
CN11
2
Release Detector
CN12
5
CR Motor
CN13
4
PF Motor
CN14
10
DC input, Power On/Off
CN15
16
Printhead (upper connector)
CN16
17
Printhead, Thermistor (lower connector)
CN19
2
FAN
CN20
20
Control Panel
CN1
2
AC line input
CN2
10
DC output
CN1
20
C558 MAIN
CN2
2
Case Open Detector
Figure 7-1. 7-1. Cable Connections
EPSON LQ-590/2090
Revision A
Parallel I/F (CN1) Refer to “Parallel interface (Forward channel)” (p (pag agee 23 23)).
Type-B I/F (CN2) Refer to “Type-B Interface communication specification” (p (pag agee 27 27)).
USB I/F (CN3) Refer to “USB Interface” (p (pag agee 26 26)).
PG Detector (CN5)
HP Detector(CN8) Table 7-5. Connector Pin Assignment - CN8
Pin No.
I/O
Signal Name
1
I
HP
2
-
GND
I/O
Signal Name
Pin No.
I/O
Signal Name
1
I
PG1
PG Detector signal
1
I
RELEASE
2
-
GND
Ground
2
-
GND
Function
I/O
Signal Name
1
I
PE
2
-
GND
Function
Release Detector signal Ground
CR Motor (12) Table 7-7. Connector Pin Assignment - CN12
Table 7-3. Connector Pin Assignment - CN6 Pin No.
Ground
Table 7-6. Connector Pin Assignment - CN11
Pin No.
Front PE Detector (CN6)
HP Detector signal
Release Detector(CN11)
Table 7-2. Connector Pin Assignment - CN5
Function
Function
Front PE Detector signal Ground
Rear PE Detector(CN7)
Pin No.
I/O
Signal Name
Function
1
O
CRA
CR Motor phase A
2
O
CR-A
CR Motor phase /A
3
O
CRB
CR Motor phase B
4
O
CR-B
CR Motor phase /B
5
-
CRCOM
Common
Table 7-4. Connector Pin Assignment - CN7 Pin No.
I/O
Signal Name
1
-
+5V
+5V
2
I
PE
Rear PE Detector signal
3
-
GND
Function
Ground
PF Motor (CN13) Table 7-8. Connector Pin Assignment - CN13 Pin No.
I/O
Signal Name
1
O
P FA
PF Motor phase A
Function
2
O
PFB
PF Motor phase B
3
O
P F-A
PF Motor phase /A
4
O
PF-B
PF Motor phase /B
EPSON LQ-590/2090
Revision A
Printhead (CN15, CN16)
F side (CN16: lower connector)
R side (CN15: upper connector) Table 7-10. Connector Pin Assignment - CN16 Table 7-9. Connector Pin Assignment - CN15 Function
Pin No.
I/O
Signal Name
Function
1
O
HEAD5
#5 Head Data
Pin No.
I/O
Signal Name
1
O
HEAD3
#3 Head Data
2
O
HEAD1
#1 Head Data
2
O
HEAD11
#11 Head Data
3
O
HEAD13
#13 Head Data
3
O
HEAD2
#2 Head Data
4
O
HEAD9
#9 Head Data
4
O
HEAD19
#19 Head Data
5
O
HEAD21
#21 Head Data
5
O
HEAD7
#7 Head Data
6
O
HEAD17
#17 Head Data
6
–
COM3
#3, 7, 11, 15 Common
7
–
COM5
#5, 9, 13, 17 Common
7
–
COM6
#14, 19, 22, 23 Common
8
–
COM4
#4, 12, 20, 21 Common
8
–
COM2
#2, 6, 10, 18 Common
9
–
COM1
#1, 8, 16, 24 Common
9
O
HEAD22
#22 Head Data
10
O
HEAD24
#24 Head Data
10
O
HEAD15
#15 Head Data
11
O
HEAD20
#20 Head Data
11
O
HEAD18
#18 Head Data
12
O
HEAD12
#12 Head Data
12
O
HEAD23
#23 Head Data
13
O
HEAD8
#8 Head Data
13
O
HEAD10
#10 Head Data
14
O
HEAD16
#16 Head Data
14
O
HEAD14
#14 Head Data
15
I
TH
Thermistor
15
O
HEAD6
#6 Head Data
16
I
TH
Thermistor
17
O
HEAD4
#4 Head Data
EPSON LQ-590/2090
7.2 Electric Circuit Diagrams The following pages show circuit diagrams below.
C558MAIN Circuit Diagram
C524PANEL Circuit Diagram
C524PSB Circuit Diagram
C524PSE Circuit Diagram
C524PSH Circuit Diagram
Revision A
Model: BOARD: SHEET: Rev. :
LQ-590/2090 C558MAIN BOARD 1 of 1 D
Model: Board: Sheet: Rev. :
LQ-590/2090 C524PNL BOARD 1 of 1 B
Model: Board: Sheet: Rev. :
LQ-590/2090 C524PSB BOARD 1 of 1 B
Model: Board: Sheet: Rev. :
LQ-590/2090 C524PSE BOARD 1 of 1 B
Model: Board: Sheet: Rev. :
LQ-590/2090 C524PSH BOARD 1 of 1 B
EPSON LQ-590/2090
7.3 Exploded Diagrams See the following pages for the exploded diagrams below:
LQ-590
Housing Components (1/3)
Electrical Components (2/3)
Printer Mechanism (3/3)
LQ-2090
Housing Components (1/4)
Electrical Components (2/4)
Printer Mechanism (3/4)
Accessary (4/4)
Revision A
103
106
109
133
102 105
117
104 132 120 C
I
121
141
125
J
138
108
A
C
B
D
E G
H
F
K L M D
B
110 111
112 112 116
112
101
122 115
101
100
137
107
LQ-590
NO.1
Rev.01
C558-CASE-011
152
350
C
I
300 C
J
B
D
E G
H
F
K
A
L
450
M
200
D
B
372
400
LQ-590
NO.2
Rev.01
C558-ELEC-011STD
548
533
546
551
542
557
533
533
662
541
535
535
545
535 563
525
561
556
552
562
560
550 543 544 552
584
615
532 527
551
521
530
524
574 G
526
534
532
573 614 583
M
549
564 585
532 547
620
534 534
531 528
621 622
619 619
K
570
652
502 619
575
504
578
602 572
653
588
650
617
523
623
522 568
613 613
597
618
L
503
582
E
651
536
J
601 I
655
607 595
537
581
589
579
587
593
661
600
581
590
576
569
511
661
580 501
600
594
599 598
601
661 596
607
577
F
595 591 H
592 529
500 661
LQ-590
NO.3
Rev.01
C558-MECH-011
118
106
105 120 113 103
104
119
121
B 109 108
102
133
115 110
F 101
116
F
H
D
117 G E
I
123
B
137
J
138
122
K
F
101
100
107
112 112
111 112
LQ-2090
NO.2
R ev ev.01 .01
C559-CAS E -0 C559-CAS -011 11
L
132
A 450
B
350
350 F
F
H
D
300
G E
I B J K
L
200
F
400
LQ-2090
NO.3
R ev ev.01 .01
C559-E LE C-011 C559-E
548
533 533
541
551
533
546 542 573
552
545
533
535
527
535
544 575
535
550
650
530
543 547
588
568
549 585 584
524 583
521 F
H
532
552
I
532 534
536
532
551
565
574 619 619
589
525
535
L
534 534
532
570
526
534 620
571 582
652
531
621 622
619 663
502 556
607
572 617 623 618
504 560
522
601
501
602 563
J
528 597
595
503 590
593
613 613 D
561
K
655
564 615
651
662
562
523
594
578
598
505 600
587
596
586
569 600
511 601 607
505
591 595
579 E
576 600 586
G 505
500
592 5 29 29
577
505
LQ-2090
NO.4
R ev.01
C559-MEC H-011
5 24 24
580
150 15 0
LQ-2090
NO.1
R ev ev.01 .01
C 559 559-ACCE -ACCE -0 -011 11
EPSON LQ-590/2090
Revision A
7.4 Parts List
Table 7-11. Parts List - LQ-590
LQ-590 Table 7-11. Parts List - LQ-590
137
"GROUNDING PLATE,BOTTOM"
138
"HOLDER,CABLE"
141
"SHEET,PANEL"
100
"HOUSING ASSY.,LOWER"
152
"EDGE GU GUIDE AS ASSY.,FRONT,OPTION;B"
101
FOOT
200
"BOARD ASSY., MAIN"
102
"HOUSING ASSY.,UPPER"
300
"BOARD AS ASSY., PO POWER SU SUPPLY"
103
"COVER AS ASSY.,PRINTER,REAR;B"
350
HARNESS AC INLET
104
"COVER ASSY.,PRINTER;B"
372
HARNESS
105
WING;EPAG
450
"HOUSING ASSY.,PANEL"
106
SHEET GUIDE ASSY
500 500
"PRINTER MECHANISM(ASP),M-5Z10-100 100"
107
"COVER ASSY.,FRONT;EUR"
501
"FRAME ASSY.,RIGHT"
108
KNOB
502
"FRAME ASSY.,LEFT"
109
"SHIELD,PLATE,UPPER"
503
"MOTOR ASSY.,CR"
110
SHIELD PLATE;B
504
RD ASSY.
111
SHIELD PLATE
511
"MOTOR,PF"
112
GROUNDING PLATE
521
"HARNESS,PG"
115
"COVER,CONNECTOR,UPPER;EPAG"
522
"DETECTOR,HP"
116
"MOUNTING,HOUSING"
523
"HARNESS,HP"
117
"GUIDE,I/F BO BOARD"
524
CONNECTOR SWITCH;B
120
"LOGO PLATE,12X48;C"
525
"PAPER GUIDE ASSY.,REAR"
121
"SHEET,RELEASE,CAP"
526
"SHAFT,RELEASE"
122
"STOPPER,COVER,FRONT"
527
"HARNESS,PE,FRONT"
125
FAN ASSY.
528
"HARNESS,PE,REAR"
132
"GROUNDING PLATE,I/F"
529
"HARNESS,RE"
133
"GROUNDING PLATE,I/F,UPPER"
530
"DETECTOR,PE,FRONT,S"
EPSON LQ-590/2090
Revision A
Table 7-11. Parts List - LQ-590
Table 7-11. Parts List - LQ-590
531
"DETECTOR ASSY., REAR"
564
"ROLLER,PAPER EJECT,DRIVE"
532
"ROLLER,PF,DRIVEN,LOWER"
568
"HOLDER,CABLE,HEAD"
533
"ROLLER ASSY.,PF"
569
"ROLLER ASSY,DRIVE"
534
"EXTENSION SPRING,70"
570
PLATEN ASSY.
535
"COMPRESSION SP SPRING,1000"
572
"BUSHING,8,RIGHT"
536
CARRIAGE SUB ASSY
573
"COVER,PLATEN"
537
"SLIDER,CR"
574
"BUSHING,8,LEFT"
541
TRACTOR ASSY.
575
RIBBON MASK
542
"TRACTOR,LEFT;EDGB"
576
"PAPER GUIDE ASSY.,SUPPORT"
543
"TRACTOR,RIGHT;EDGB"
577
"GUIDE,PAPER LOAD"
544
"SHAFT,TR,DRIVE"
578
"FRAME,REAR"
545
"SHAFT,TR,GUIDE"
579
"FRAME,FRONT"
546
"FRAME,TR,LEFT;EPAG"
580
"FRAME,SUB,RIGHT"
547
"FRAME,TR,RIGHT;EPAG"
581
"GROUNDING PLATE,MECHA"
548
"LEVER,TR,LEFT;EDGB"
582
"FRAME,BASE"
549
"LEVER,TR,RIGHT;EDGB"
583
"BUSHING,PARALLEL,ADJUST"
550
PAPER SUPPORT
584
"LEVER,GAP,ADJUST"
551
"SPUR GEAR,20"
585
"CAP,LEVER;EDGB"
552
RETAINING RING(B150300911)
587
"MOUNTING PL PLATE,MOTOR,CR"
556
"COVER, PAPER EJECT"
588
"HOLDER,RIBBON MA MASK"
557
"FRAME,PAPER EJECT;EPAG"
589
OIL PA PAD(F334005140)
560
"LEAF SP SPRING,PAPER EJ EJECT,DOUBLE"
590
"LEVER,RELEASE;EDGB"
561
"SPUR GEAR,15"
591
"CAM,CLUTCH,TRACTOR"
562
"SPUR GEAR,11.5"
592
"HOLDER,CABLE"
563
"LEAF SP SPRING,PAPER EJ EJECT,SINGLE"
593
"COMBINATION GEAR,8,30"
EPSON LQ-590/2090
Revision A
Table 7-11. Parts List - LQ-590
Table 7-11. Parts List - LQ-590
594
"SPUR GEAR,27"
661
BASE RUBBER
595
"SPUR GEAR,34.5"
662
PAPER EJECT ASSY.
596
"SPUR GEAR,34"
NON FIG
OIL O-14
597
"SPUR GEAR,15"
NON NON FIG FIG
GREA GREASE SE G-26 G-26 (40G (40GR) R)(B (B70 7026 2600 0000 001) 1)
598
INTERMITTENT GE GEAR
599
"LEVER,RELEASE,TRANSMISSION;W"
600
"EXTENSION SPRING,71"
601
"COMPRESSION SPRING,200"
602
"SPRING PIN,2X18,F/B"
607
PLAIN WASHER(B100166012)
613
"SHAFT,MOUNT,CR"
614
TOOTHED LOCK WASHER A
615
HEXAGON NUT(B070200411)
617
LEAF SP SPRING(B101253990)
618
"SPUR GEAR,36"
619
RETAINING RING(B160101412)
620
"LEVER,DETECTOR,PE,REAR"
621
"LEVER,PE,SUPPORT"
622
"TORSION SPRING,0.26"
623
"PLAIN WASHER,3X0.5X8,F/ZB"
650
HEAD KIT ASP
651
"EXTENSION SPRING,16.45"
652
"HOLDER,PULLEY DR DRIVEN"
653
"CABLE,HEAD"
655
"SHAFT,CR,GUIDE"
EPSON LQ-590/2090
Revision A
Table 7-12. Parts List - LQ-2090
LQ-2090 Table 7-12. Parts List - LQ-2090 TBD
"EDGE GU GUIDE ASSY.,FRONT;B"
100
"HOUSING ASSY.,LOWER"
101
FOOT
102
"HOUSING ASSY.,UPPER"
103
"COVER AS ASSY.,PRINTER,REAR;B"
104
"COVER ASSY.,PRINTER;B"
105
WIHG;EPAG
106
SHEET GUIDE ASSY
107
"COVER ASSY.,FRONT;B"
108
KNOB
109
"SHIELD,PLATE,UPPER"
110
SHIELD PLATE;B
111
SHIELD PLATE
112
GROUNDING PLATE
113
"SHEET,PANEL"
115
"COVER,CONNECTOR,UPPER;EPAG"
116
"MOUNT,HOUSING"
117
"GUIDE,I/F BOARD"
118
"HOLDER,SHEET GU GUIDE,L"
119
"HOLDER,SHEET GU GUIDE,R"
120
"LOGO PLATE,12X48;C"
121
"STOPPER,COVER,FRONT"
122
"HOLDER,CABLE"
123
FAN ASSY.
132
"GROUNDING PLATE,I/F"
133
"GROUNDING PLATE,I/F,UPPER"
137
"GROUNDING PLATE,BOTTOM"
200
"BOARD ASSY., MAIN"
300
"BOARD AS ASSY., PO POWER SU SUPPLY"
350
HARNESS
372
HARNESS
450
"HOUSING ASSY.,PANEL"
500
PRINTER ME MECHANISM(ASP)M-5Z60-100
501
"FRAME ASSY.,RIGHT"
502
"FRAME ASSY.,LEFT"
503
"MOTOR ASSY.,CR"
504
RD ASSY.
505
BASE RUBBER
511
"MOTOR, PF"
521
"HARNESS,PG"
522
"DETECTOR,HP"
523
"HARNESS,HP"
524
CONNECTOR SWITCH;B
525
"PAPER GUIDE ASSY.,REAR"
526
"SHAFT,RELEASE"
527
"HARNESS,PE,FRONT"
528
"HARNESS,PE,REAR"
529
"HARNESS,RE"
530
"DETECTOR,PE,FRONT,S"
EPSON LQ-590/2090
Revision A
Table 7-12. Parts List - LQ-2090
Table 7-12. Parts List - LQ-2090
531
"DETECTOR ASSY., REAR"
565
"SLIDER,CR"
532
"ROLLER,PF,DRIVEN,LOWER"
568
"CABLE,HEAD"
533
"ROLLER ASSY.,PF"
569
"ROLLER ASSY.,DRIVE"
534
"EXTENSION SPRING,46"
570
PLATEN ASSY.
535
"COMPRESSION SP SPRING,1000"
571
"FRAME,REAR"
536
CARRIAGE SUB ASSY
572
"FRAME,BASE"
541
TRACTOR ASSY.
573
"COVER,PLATEN"
542
"TRACTOR,LEFT;EDGB"
575
RIBBON MASK
543
"TRACTOR,RIGHT;EDGB"
576
"PAPER GUIDE ASSY.,SUPPORT"
544
"SHAFT,TR,DRIVE"
577
"GUIDE,PAPER LOAD"
545
"SHAFT,TR,GUIDE"
578
"LEVER,RELEASE,TRANSMISSION;W"
546
"FRAME,TR,LEFT;EPAG"
579
"FRAME,FRONT"
547
"FRAME,TR,RIGHT;EPAG"
580
"FRAME,SUB,RIGHT"
548
"LEVER,TR,LEFT;EDGB"
582
"SHAFT,CR,GUIDE"
549
"LEVER,TR,RIGHT;EDGB"
583
"BUSHING,PARALLEL,ADJUST"
550
PAPER SUPPORT
584
"LEVER,GAP,ADJUST"
551
"SPUR GEAR,20"
585
"CAP,LEVER;EDGB"
552
RETAINING RING(B150300911)
586
"GROUNDING PLATE,MECHA"
556
"COVER,PAPER EJECT"
587
"MOUNTING PL PLATE,MOTOR,CR"
557
PAPER EJECT ASSY.
588
"HOLDER,RIBBON MA MASK"
560
"LEAF SP SPRING,PAPER EJ EJECT,DOUBLE"
589
OIL PAD
561
"SPUR GEAR,15"
590
"LEVER,RELEASE;EDGB"
562
"SPUR GEAR,11.5"
591
"CAM,CLUTCH,TRACTOR"
563
"LEAF SPRING,PAPER EJECT,SINGLE"
592
"HOLDER,CABLE"
564
"ROLLER,EJ,DRIVE"
593
"COMBINATION GEAR,8,30"
EPSON LQ-590/2090
Revision A
Table 7-12. Parts List - LQ-2090 594
"SPUR GEAR,27"
595
"SPUR GEAR,34.5"
596
"SPUR GEAR,34"
597
"SPUR GEAR,15"
598
INTERMITTENT GEAR
600
"EXTENSION SPRING,71"
601
"COMPRESSION SPRING,200"
607
"PLANE WASHER,8.2X0.5X12,L/NA"
613
"SHAFT,MOUNT,CR"
615
"HOLDER,CABLE,HEAD"
616
"SHEET,RELEASE,CAP"
618
"SPUR GEAR,36"
620
"LEVER,DETECTOR,PE,REAR"
621
"LEVER,PE,SUPPORT"
622
"TORSION SPRING,0.26"
650
HEAD KIT ASP
651
"EXTENSION SPRING,16.45"
652
"HOLDER,PULLEY DR DRIVEN"
NON FIG
OIL O-14
NON NON FIG FIG
GREA GREASE SE G-26 G-26 (40G (40GR) R)(B (B70 7026 2600 0000 001) 1)