Epson LQ-2180 Service Manual

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Page 1

66((5599,,&&((00$$1818$$//

Impact Serial Dot Matrix Printer

EPSON LQ-2180

SEDM98001

Page 2

Notice:

„

EPSON is a re

General Notice: Other product names used herein are for identification purpose only and may be trademarks or re

Copyri

hts reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,

All ri electronic, mechanical, photocopyi n

The contents of this manual are subject to chan All effort have been made to ensure the accuracy of the contents of this manual. However , shoul d any errors be detected, SEIKO EPSON

would The above not withstandin

thereof.

reatly appreciate being informed of them.

SEIKO EPSON CORPORATION can assume no responsibility for any errors in this manual or the consequences

istered trademark of SEIKO EPSON CORPORATION.

respective owners. EPSON disclaims any and all ri

, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION.

e without notice.

istered trademarks of their

hts in those marks.

Page 3

PRECAUTIONS

Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment.

DANGER

WARNING

The precautionary measures itemized below should a lways be observed when performin

Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performin

Signals a precaution which, if ignored, could result in damage to equipment.

procedures preceded by DANGER Headings.

repair/maintenance procedures.

DANGER

1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.

2. NOWORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.

WARNING

1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.

2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING 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 THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTISTATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5. REPLACE MALFUNCTIONING COMPONENTS ONLY WITH THOSE COMPONENTS BY THE MANUFACTURE; INTRODUCTION OF SECOND-SOURCE ICs OR OTHER NONAPPROVED COMPONENTS MAY DAMAGE THE PRODUCT AND VOID ANY APPLICABLE EPSON WARRANTY.

Page 4

PREFACE

This manual describes basic functions, theor y of elect rical and mecha nical oper ations, maint enance and repa i instructions and procedures included herein are intended for the experienced repair technicians, and attention the preceding page. The chapters are organized as follows :

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 produ

CHAPTER 3. DISASSEMBLY AND ASSEMBLY

Describes the step-by-step procedures for disassembling and assembling t product.

CHAPTER 4. ADJUSTMENTS

Provides Epson-approved methods for adjustment.

CHAPTER 5. TROUBLESHOOTING

Provides the step-by-step procedures for troubleshooting.

CHAPTER 6. MAINTENANCE

Provides preventive maintenance procedures and the lists of Epson-appro lubricants and adhesives required for servicing the product.

APPENDIX

Provides the following additional information for reference:

• EEPROM Address Map

• Connector Pin Assignments

• C272 Main Board Component Layout

• C272 Main Board Circuit Diagram

Page 5

Revision Status

Revision Issued Date Description

A February 3, 1999 First Release

Page 6

Contents

Product Description

Specifications ........................... ...................................................................... 8

Features ................................................................................................................ 8

Accessories ........................................................................................................... 8

Printing Specifications ............................................................... ..... ....................... 9

Paper Handling ............................. ....................................... ...... ..... ...... ................. 9

Paper Specifications ..................... ..... ........................................ ..... ...... ...... ......... 11

Electrical Specifications ................ ..... ...... ...... ..... ........................................ ..... .... 15

Reliability ............................................................................................................. 15

Safety Approvals ................................................................................................. 15

CE Marking .......................................................................................................... 15

Firmware Specifications

Control Codes and Fonts .................................................................................... 16

Interface Specifications ....................................................................................... 18

Parallel Interface (Forward Channel) .................................................. 18

Parallel Interface (Reverse Channel) ................................................. 18

Operation Instruction .................................................................................... 19

Control Panel ....................................................................................................... 19

Bi-directional Adjustment Function ...................................................................... 19

EEPROM Initialization ......................................................................................... 20

Main Components

C272MAIN Board ................................................................................................ 22

Printer Mechanism .............................................................................................. 23

............................................................................... 16

......................................................................................... 21

Disassembly and Assembly

Adjustment

Overview ...................................................................................................... 33

Pre-operation for the Adjustment Program ......................................................... 33

Bi-D Adjustment .................................................................................................. 35

TPE Level Reset ................................................................................................. 36

Writing the User-characteristic Data ................................................................... 37

Troubleshooting

Overview ...................................................................................................... 40

Troubleshooting Information ........................................................................ 40

Printhead ............................................................................................................. 40

Sensors ............................................................................................................... 40

Motors ................................................................................................................. 40

Error Codes with Indicators and Buzzer .............................................................. 40

Unit Level Troubleshooting

Repairing the C165 PSB/PSE Board .............................................................. 41

Repairing the C272MAIN Board ..................................................................... 41

Repairing the Printer Mechanism .................................................................. 43

........................................................................... 41

Operating Principles

Control Circuit .............................................................................................. 25

Overview of the Control Circuit Operation ........................................................... 25

System Reset Circuit ........................................................................................... 26

Printhead Driver Circuit ....................................................................................... 27

CR Motor Driver Circuit ....................................................................................... 28

PF Motor Driver Circuit ........................................................................................ 28

EEPROM Control Circuit ..................................................................................... 29

Sensor Circuit ...................................................................................................... 29

Maintenance

Appendix

EEPROM Address Map ................................................................................. 47

Connector Summary ..................................................................................... 51

Component Layout ....................................................................................... 53

Circuit Diagram ............................................................................................ 55

Page 7

PRODUCT DESCRIPTION





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LQ-2180 Revision A

1.1 Specifications

The LQ-2180 is a revis ed model of the already existing LQ-2170. Since the specifications for the both products are mostly common except for the LQ-2180’s improved features such as printing speed and copy capability, the inform ation included in this section is limited to the items that are specific to LQ-2180. For the rest of the information, refer to the LQ-2170 Service Manual.

1.1.1 Features

† Printing speed

„ High speed draft: 480 cps „ Draft: 360 cps „ LQ: 120 cps (at 10 cpi)

† Char acter tables

„ Standard version: 13 tables „ NLSP version: 38 tables

1.1.2 Accessories

† I tems included in the printer carton

Table 1-1. Items Included in the Printer

Items Quantity

User’s manual 1 Driver disk 1 Ribbon cartridge 1 Power supply cable (230 V version) 1

† Consumable items

Table 1-2. Items Included in the Printer

Items Part Number

Ribbon cartridge S015086 Ribbon pack S010033

† Opt ional items: Additional items are shown in the table below:

† Reliability

„ Mean print volume between failure: 23 million lines

(except printhead)

† Bi -directional Interface

„ Optional Type-B I/F Level 2 supported

† Copy capability

„ 1 original + 5 copies

IEEE-1284 parallel I/F card C82345

Ethernet I/F card

NOTE:When you use Ethernet interface card C82363∗, you

Table 1-3. Items Included in the Printer

Items Part Number

∗

C82357∗ / C82362∗ / C82363∗ / C82363 C82364

(See NOTE below.) /

∗ ∗

need to attach the optional interface adap ter (C82525* ) to the interface card.

Product Description Specifications 8

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LQ-2180 Revision A

1.1.3 Printing Specifications

† Copy capability: 1 original + 5 copies † Printing speed and printable column (See the table below.)

Table 1-4.

Print Speed and Corresponding Printable Columns

Printing mode Character pitch

High speed draft 10 cpi 136 480 320

10 cpi 136 360 240

Draft

Draft condensed

12 cpi 163 431 286 15 cpi 204 539 358 17 cpi 233 308 205 20 cpi 272 359 239 10 cpi 136 120 80 12 cpi 163 143 96 15 cpi 204 179 120

Printable

columns

Printing speed (cps)

Normal Copy

1.1.4 Paper Handling

This section only describes the release lever setting, adjust lever setting, and some other specifications which are specific to LQ-2180. For the rest of the specifications, see the LQ-2170 Service Manual.

† Feedi ng method

„ Friction feed (front, rear) „ Push tractor feed (front lever) „ Push & Pull tractor feed (front, rear) „ Pull tractor feed (front, rear, bottom)

† Feed speed

„ Normal mode: Same as for LQ-2180 „ Copy mode: 1/6 inch feed = 45 m sec

Continuous feed =0.092 MPW (m/second)

3.6 IPS (inches/second)

LQ condensed

17 cpi 233 204 137 20 cpi 272 238 159

NOTE:When the power supply voltage drops to the lower limit,

the printer stops printing and then resu mes pri nting remaining on that line more slowly than before.

NOTE:When the head temperature rises to the upper limit, the

printer stops printing. When the head temperature falls to the normal level, the print er starts print ing again more slowly than before.

NOTE:The maximum printable width is 13.6 inch (345.44 mm).

Product Description Specifications 9

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LQ-2180 Revision A

† Rel ease lever: See the following table.

Table 1-5. Release Lever Settings

Lever Position Paper path / Feeder Paper / Media

Manual insertion (front)

Manual insertion (rear)

Friction

CSF Bin 1

CSF Bin 2 Cut sheet (Single sheet) Roll paper holder Roll paper

Push tractor feed (front)

Front tractor

Push & Pull tractor feed (front)

Push tractor feed (rear)

Rear tractor

Push & Pull tractor feed (rear)

Cut sheet (Single sheet & Multi part), Card

Cut sheet (Single sheet & Multi part), Card, Envelope

Cut sheet (Single sheet & Multi part), Card, Envelops

Continuous paper (Single sheet & Multi part), Continuous paper with labels

Continuous paper (Single sheet & Multi part)

† Adju st lever: See the following table.

Table 1-6. Adjust Lever Setting Position

Setting

Position

0 0.0024 0.0047 over 0.006 up to 0.12 1 0.0047 0.0074 over 0.12 up to 0.19 2 0.0074 0.0102 over 0.19 up to 0.26 3 0.0102 0.0126 over 0.26 up to 0.32 4 0.0126 0.0141 over 0.32 up to 0.36 5 0.0141 0.0157 over 0.36 up to 0.40 6 0.0157 0.0173 over 0.40 up to 0.44 7 0.0173 0.0181 over 0.44 up to 0.46

Paper Thickness (inch)

Paper Thickness (mm)

Minimum Maximum

Continuous paper (Single sheet & Multi part), Continuous paper with labels

Continuous paper (Single sheet & Multi part)

Continuous paper (Single sheet & Multi part), Continuous paper with labels

Full release

Pull tractor feed (front)

Pull tractor feed (rear)

Pull tractor feed (bottom)

Product Description Specifications 10

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LQ-2180 Revision A

1.1.5 Paper Specifications

This section provides paper specifications for the LQ-2180.

Table 1-7. Cut Sheet

Front Entry Rear Entry

Minimum Maximum Minimum Maximum

Width

Length

Thickness

Weight

Quality

(inch) (mm)

(g/m2) (lb.)

NOTE:Printing on recycled paper is available only under normal

temperature and humidity conditions.

3.9

100

5.8

148

0.0025

0.065 52

Plain paper, Recycled paper, Paper that is not curled, folded, or crumpled.

16.5 420

0.0055

0.14

90 24

3.9

100

3.9

100

0.0025

0.065 52

Plain paper, Recycled p aper, Paper that is not curled, folded, or crumpled.

0.0055

16.5 420

0.14

90 24

Table 1-8. Cut Sheet (Multi Part)

Front Entry Rear Entry

Minimum Maximum Minimum Maximum

Width

Length

Copies 1 original + 5 copies 1 original + 5 copies

Total Thickness

Weight

(one sheet of multi part)

Quality

Jointing

(inch) (mm)

(g/m2) (lb.)

3.9

100

5.8

148

0.0047

0.12 40

Plain paper, Recycled paper, Paper that is not curled, folded, or crumpled.

Line glue at the top or one side of form.

16.5 420

0.018

0.46

58 15

3.9

100

3.9

100

0.0047

0.12 40

Line glue at the top of form.

16.5 420

0.018

0.46

58 15

Product Description Specifications 11

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LQ-2180 Revision A

Table 1-9. Card

Front Entry Rear Entry

Minimum Maximum Minimum Maximum

Width

Length

Thickness

Weight

Quality

(inch) (mm)

(g/m2) (lb.)

3.9

100

5.8

148

0.0087

0.22 192

Plain paper, Recycle d paper, Paper that is not curled, folded, or crumpled.

7.8

200

7.8

200

3.9

100

5.8

148

0.0087

0.22 192

Plain paper, Recycle d paper, Paper that is not curled, folded, or crumpled.

7.8

200

7.8

200

NOTE:Printing on recycled paper is available only under normal

temperature and humidity conditions.

NOTE:When the longer side of A6 card is horizontally, it should be

inserted from the rear entrance.

Table 1-10. Envelope

Front Entry Rear Entry

Minimum Maximum Minimum Maximum

Envelop

Width

(No. 6)

Length

Width

Envelop (No. 10)

Length

Total Thickness

Weight

Quality - - -

(inch) (mm)

(g/m2) (lb.)

- - -

- - - - - -

- - -

- - - - - -

6.5

165

3.6 92

9.5

241

4.1

105

0.0063

0.16

The difference of thickness at the printable area is within

0.0098 inch (0.25mm). 45

BOND paper, plain paper or AIRMAIL No glue at a flap Not curled, not folded, not crumpled

0.020

0.52

90 24

NOTE:Printing on envelope is available only under normal

temperature and humidity conditions.

NOTE:Envelopes should be inserted from rear entrance only. NOTE:Set the longer side of envelope horizontally.

Product Description Specifications 12

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LQ-2180 Revision A

Table 1-11. Continuous Paper (Single sheet and Multi Part) Table 1-12. Continuous Paper with Labels

Front Entry Rear Entry Bottom Entry

Min. Max. Min. Max. Min. Max.

Width

Length (one page)

Copies

Total Thickness

Weight (not multi

part) Weight

(one sheet of multi part)

Quality Plain paper, Recycled paper, Carbonless multi part paper Jointing Point glue or paper staple (both side)

(inch) (mm)

(inch) (mm)4101.622558.8

(inch) (mm)

(g/m (lb.)

(g/m2) (lb.)

101.616406.4

1 original + 5

copies

0.0025

0.065

)

52 14

40 12

0.018

0.46

82 22

58 15

101.616406.4 4

101.622558.8

1 original + 5

copies

0.0025

0.065

52 14

40 12

0.018

0.46

82 22

58 15

101.616406.4 4

101.622558.8

1 original + 5

copies

0.0025

0.065

52 14

40 12

0.018

0.46

82 22

58 15

Front Entry Bottom Entry Rear Entry

Min. Max. Min. Max. Min. Max.

Label size

Base sheet width

Base sheet length (one page)

Base sheet thickness

Total thickness

Label weight

Quality

See the figure below

(inch) (mm)4101.616406.44101.616406.4

(inch) (mm)4101.622558.84101.622558.8

(inch) (mm)

(g/m2) (lb.)

0.0028

0.07

0.0063

0.16

AVERY CONTINUOUS FORM LABELS, AVERY MINI-LINE LABELS or the same quality labels

0.0035

0.09

0.0075

0.19

68 17

See the figure below

0.0028

0.07

0.0063

0.16

0.0035

0.0075

68 17

0.09

0.19

- - -

--- ---

- - -

NOTE:Printing on labels si available only under normal temperature

and humidity condition.

NOTE:The base sheet of labels must be continuous paper. NOTE:Continuous paper with labels should be inserted from the

front or bottom entrance.

2.5 inch (63.5 mm) min.

15/16inch (23.8 mm) min.

Label

R 0.1 inch (2.5 mm) min.

Figure 1-1. Printable Area - Label

Product Description Specifications 13

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LQ-2180 Revision A

Table 1-13. Roll Paper

Front Entry Rear Entry

Minimum Maximum Minimum Maximum

Width

Length

Thickness

Weight

Quality - - -

(inch) (mm)

(g/m2) (lb.)

- - -

- - - - - -

8.5

216

0.0028

0.07

52.3 14

Plain paper, Recycle d paper, Paper that is not curled, folded, or crumpled.

0.0035

0.09 82

Product Description Specifications 14

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LQ-2180 Revision A

1.1.6 Electrical Specifications

The electrical specifications for the LQ-2180 is the same as for the LQ2170 except for the items belo w. For informati on on other items, see t he LQ-2170 Service Manual.

† Input voltage range

„ 120 V version: AC 99 to 132 V „ 230 V version: AC 198 to 264 V

(same as for the LQ-2170

† Rat ed current

„ 120 V version: 1.0 A (maximum = 4.0 A) „ 230 V version: 0.5 A (maximum = 2.0 A)

† Power consumption (for 120 V and 230 V versions)

„ Approximately 52 W (ISO/IEC10561 Letter pattern)

(Energy Star compliant)

1.1.7 Reliability

† MVBF *1: 24 million lines (except pri nt data)

† 230 V versio n

„ Safety standards: EN60950 (TUV) „ EMI: EN55022 (CISPR pub.22) class B

AS/NZS 3548 class B

1.1.9 CE Marking

† 230 V versio n

„ Low voltage directive 73/23/EEC:EN60950 „ EMD Directive 89/336/EEC: EN55022 class B

EN61000-3-2 EN61000-3-3 EN50082-1

IEC801-2 IEC801-3 IEC801-4

† Acoustic noise: Approximately 54 db(A)

(ISO 7779 pattern)

† MTBF: 10000 POH † Pr inthead life: 400 million strokes/wire

*1: Mean print volume between failure

1.1.8 Safety Approvals

† 120 V version

„ Safety standards: UL1950, CSA C22.2 No. 950 „ EMI: FCC part15 subpart B class B

CSA C108.8 class B

Product Description Specifications 15

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LQ-2180 Revision A

1.2 Firmware Specifications

This section describes the firmware specifications for the LQ-2180.

1.2.1 Control Codes and Fonts

† Control codes: ESC/P2 and IBM 2391 Plus Emulation † Char acter tables:

Standard version (13 character tables )

Italic table PC 860 (Portuguese) PC 850 (Multilingual) PC 437 (US, Standard Europe) PC 861 (Icelandic) PC 863 (Canadian-French) PC 865 (Nordic) Abicomp BRASCII Roman 8 ISO Latin 1 PC 858 ISO 8859-15

NLSP version (38 character tables)

Italic table PC437 (US, Standard Europe) PC437 Greek PC850 (Multilingual) PC852 (East Europe) PC853 (Turkish) PC855 (Cyrillic) PC857 (Turkish) PC864 (Arabic) PC866 (Russian) PC869(Greek) MAZOWIA (Poland)Code MJK (CSFR) ISO 8859-7 (Latin/Greek) lSO Latin 1T (Turki sh) Bulgaria (Bulgarian) PC774 (LST 1283:1993) Estonia (Estonia) ISO 8859-2 PC866 LAT. (Latvian) PC866 UKR (Ukraina)PC860 (Portuguese) PC861 (Icelandic) PC865 (Nordic) PC APTEC(Arabic) PC708 (Arabic) PC720 (Arabic) PCAR864 (Arabic) PC863 (Canadian-French) Abicomp BRASCII Roman 8 ISO Latin 1 Hebrew7* Hebrew8* PC862 (Hebrew)* PC 858 lSO 8859-15

International character set (14 countr ies and legal)

U.S.A. France Germany U.K. Denmark 1 Sweden Italy Spain 1 Japan Norway Denmark 2 Spain 2 Latin America Korea Legal

* The international and legal characters are these 12 codes:

23H, 24H, 40H, 5BH, 5CH, 5DH, 5EH, 60H, 7BH, 7CH, 7DH, 7EH

† Typeface

Bit map fonts

EPSON Draft 10 CPI, 12 CPI, 15CPI EPSON Roman 10 CPI, 12 CPI, 15CPI, Proportional EPSON Sans Serif 10 CPI, 12 CPI, 15CPI, Proportional EPSON Courier 10 CPI, 12 CPI, 15CPI EPSON Prestige 10 CPI, 12 CPI EPSON Script 10 CPI EPSON OCR-B 10 CPI EPSON Orator 10 CPI EPSON Orator-S 10 CPI EPSON Script C Proportional

Scalable fonts

EPSON Roman 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) EPSON Sans Serif 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) EPSON Roman T 10.5 pt., 8 pt., - 32 pt. (every 2 pt.) EPSON Sans Serif H 10.5 pt., 8 pt., - 32 pt. (every 2 pt.)

Bar codes

EAN-13, EAN-8 Interleaved 2 of 5 UPC-A UPC-E Code 39 Code 128 POSTNET

* Not displayed in the Default setting mode.

Product Description Firmware Specifications 16

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LQ-2180 Revision A

Table 1-14. Character Tables and Available Typefaces

Character Tables Bit map font Scaleable font

Standard

version

Italic table* PC 850 (Multilingual)*

PC 861 (Icelandic)*

PC 863(Canadian-French)* Abicomp*

Roman 8 PC 858

Italic table* PC 850 (Multilingual)* PC 861 (Icelandic)* PC 865(Nordic)* Abicomp*

lSOLatin1 ISO 8859-15

PC 437 (US, Standard Europe)* PC 860 (Portuguese)* PC 865 (Nordic)*

BRASCII*

ISO Latin 1 ISO 8859-15

PC 437(US, Standard Europe)* PC 860(Portuguese)* PC863 (Canadian-French)* BRASCIl*

Roman8 PC 858

EPSON Draft EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige

EPSON Script

EPSON OCR-B EPSON Orator

EPSON Roman EPSON Sans Serif EPSON Roman T EPSON Sans Serif H

EPSON Orator-S EPSON Script C

EPSON Draft EPSON Roman

EPSON Draft EPSON Roman EPSON Sans Serif EPSON Courier EPSON Prestige EPSON Script

(Not supported)

NLSP

version

PC 864 (Arabic)

PC437Greek PC 853 (Turkish) PC 857 (Turkish) PC 869 (Greek) Code MJK (CSFR) lSO Latin 1T (Turkish) PC774 (LST 1283: 1993) 1SO 8859-2

PC 852 (East Europe) PC 855 (Cyrillic) PC 866 (Russian) MAZOWIA (Poland) lSO 8859-7 (Latin/Greek) Bulgaria (Bulgarian) Estonia (Estonia) PC 866 LAT. (Latvian)

PC 866 UKR (Ukraina)

PC APTEC (Arabic) PC 720 (Arabic)

Hebrew7* Hebrew 8*

PC862 (Hebrew)*

PC 708 (Arabic) PCAR864 (Arabic)

EPSON Draft (Arabic) EPSON Roman EPSON Sans Serif

EPSON Draft (Hebrew) EPSON Roman EPSON Courier

(Not supported)

*1: ESC R command is effective on these character tables. *2 Not displayed in the default setting mode.

Product Description Firmware Specifications 17

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LQ-2180 Revision A

1.2.2 Interface Specifications

This section only provides inf o rmation which is specific to the LQ-2180. For other information, refer to the LQ-2170 Service Manual.

1.2.2.1 Parallel Interface (Forward Channel)

† Transmission mode: IEEE-1284 compatibility mode † Signal level: TTL compatible

(IEEE-1284 level 1 device)

† Pin a ssignment: The pin assignment (forward channel) is

the same as for the LQ-2170 except for the functions of the pins below:

Pin No. Function

18 35

This line is pulled up to +5 V through 3.9 k This line is pulled up to +5 V through 1.0 k

Ω resistor. Ω resistor.

1.2.2.2 Parallel Interface (Reverse Channel)

† Transmission mode: IEEE-1284 nibble mode † Sync hronization: Refer to the IEEE-1284 specification † Handshaking: Refer to the IEEE-1284 specification † Signal level: IEEE-1284 level 1 device † Dat a transmission timing: Refer to the IEEE-1284 specification † Devi ce ID:

[00H][4DH] MFG: EPSON; CMD: ESCPL2,PRPXL24,BDC; MDL: LQ-2180; CLS: PRINTER; DES: EPSON[SP]LQ-2180;

† Pin assignment: The pin assignment (reverse channel) is

the same as for the LQ-2170 except for the functions of the pins below:

Pin No. Function

18 35

This line is pulled up to +5 V thr ough 3.9 k This line is pulled up to +5 V thr ough 1.0 k

Ω resistor. Ω resistor.

Product Description Firmware Specifications 18

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LQ-2180 Revision A

1.3 Operation Instruction

This section provides information on the LQ-2180 control panel buttons, LED, and operations. Since the layout and functions of t he control panel are mostly common to those of LQ-2170, this section only shows the information that is specific to LQ-2180. For other information, see LQ2170 Service Manual.

1.3.1 Control Panel

The control panel of this pri nter cons ists of the power swi tch, 6 non-l ock type buttons, and 10 LEDs. The appearance of the control panel is shown in the figure below.

(6 )

(5 )

Paper O ut

O perate

(7 )

Draft Roman Sans serif C ourier Prestige Script Others

Font

(1 )

10cpi 12cpi 15cpi 17cpi 20cpi PS

Pitch

(2 )

T ear O ff/B in

Tear Off Bin 1 Bin 2 Card

(3 )

Micro Adjust

LF/FF

Pause

3sec.

Load/Eject

(4 )

† Oper ation at power on

Turning on the printer while pressing panel buttons executes the functions below:

Table 1-15. Operations at Power On

No. Buttons Function

1 (5) LQ self test 2 (4) Draft self test 3 (2) Default setting 4 (4) + (5) Data dump 5 (1) + (3) EEPROM clear

6 (3) + (5)

Clear EEPROM for Driving Line count for ribbon change timing

7 (6) Bi-d adjustment

NOTE:The area reset by the EEPROM clear is as shown i n the

next section. This operation, however , does not affect such adjustment values as Bi-d adjustment and TOP PE sensor adjustment.

Figure 1-2. Control Panel

1.3.2 Bi-directional Adjustment Function

In this mode, you can adjust the bidirecti onal alignment for t he following three modes:

1. Bi-directional adjustment for dr aft mode

2. Bi-directional adjustment for dr aft copy mode

3. Bi-directional adjustment for LQ mode

Product Description Operation Instruction 19

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LQ-2180 Revision A

1.3.3 EEPROM Initialization

Areas reset by EEPROM clear operation (described in Section 1.3.1) are as shown in the following tables:

Table 1-16. Initialization Area for EEPROM (1/2)

No. Item Factory setting

1 Character table selection PC437 2 Page length (rear tractor) 11 inch 3 Page length (front tractor) 11 inch 4 Page length (CSF Bin 1) 22 inch 5 Page length (CSF Bin 2) 22 inch 6 TOF adjustment value (rear tractor) 8.5 mm 7 TOF adjustment value (front tractor) 8.5 mm 8 TOF adjustment value (CSF Bin 1) 8.5 mm 9 TOF adjustment value (CSF Bin 2) 8.5 mm

TOF adjustment value

(rear manual insertion) TOF adjustment value

(front manual insertion) 12 Bottom margin (rear tractor) 11 inch 13 Bottom margin (front tractor) 11 inch 14 Font selection Roman 15 Pitch selection 10 cpi 16 Print direction setting Bi-D 17 I/F mode selection Auto 18 Auto I/F wait time setting 10 sec 19 Auto line feed Off 20 Auto tear off Off

8.5 mm

Table 1-17. Initialization Area for EERPOM (2/2)

No. Item Factory setting

21 Skip ove r perfora tio n Off 22 High speed draft On 23 In put buf fer On 24 Software ESC/P2 25 0 slash Off 26 Buzzer On 27 Roll paper Off 28 Auto CR (IBM) Off 29 A. G. M. (IBM) Off 30 Tear-off adjustment value 0 clear 31 Other font selection Roman T

32 Bin select

33 Manual insertion wait time 2 or 3 sec. 34 Tear-off wait time 3 sec. 35 Copy mode Off 36 Black paper mode Off 37 Paper width measure On 38 TOF minimum value 4.2 mm 39 I/F timing data BUSY 40 Paper edge length 0 clear 41 Page length (rear manual insertion) 22 inch 42 Page length (front manual insertion) 22 inch

Friction Bin 1 or Tractor not Tear off

Product Description Operation Instruction 20

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1.4 Main Components

The main components for the LQ-2180 are as follows. They are designed for easy disassembly and repair work.

† C272MAIN Board † C165 PSB/PSE Board † C165 PNL Board † Printer Mechanism † Housing (upper and lower cases)

Figure 1-3. Main Components for LQ-2180

Product Description Main Components 21

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1.4.1 C272MAIN Board

The C272MAIN Board is composed of the CPU (TMP96C141), gate array (E05B42), program ROM that integrates the CG, EEPROM, and 24 transistors used to drive the printhead.

CN17

CN3

CN4

CN5

CN6

H ead D rive TRANSISTOR

CN8

CN7

SLA 7024M

CN11

CN10

CN16

CN12

CN9

IC 1 2 A 2 9 1 7

CN13

IC10 P-ROM (4M)

CN1

IC 7 C G -R O M (8 M )

CN14

IC 3 GATE ARRAY E 05B 42

CN15

Note the C272MAIN Board has the following 4 versions; 1) Standard version, 2) NLSP version, 3) Korean version, and 4) Thai version. However, ICs are attached in two different ways, which varies depending on the version, as shown in the red boxes in the figure below.

IC 1 0

IC 7

IC 6

Program & C G (8 M b it)

CG ROM (8M bit)

(Standard/N LSP /Thai)

N o t M o u n te d

Program (4M bit)

CG ROM (8M bit)

IC 1 0

IC 6

(K orean)

IC 6

(K orean V ersion O nly)

CN2

IC 1 C P U TM P 96C 141

IC 5 EEPRO M

Figure 1-4. C272MAIN Board

Product Description Main Components 22

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1.4.2 Printer Mechanism

Appearance of the printer mechanism for the LQ-2180 is the same as for the LQ-2170. However, please be aware of the printhead’s incompatibility with the LQ-2180.

Product Description Main Components 23

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OPERATING PRINCIPLES

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2.1 Control Circuit

The control circuit of the LQ-2180 is composed of the C272MAIN board and the C165PNL board. This section describes the operations of the major components in the circuit.

2.1.1 Overview of the Control Circuit Operation

The printer's control circuit includes a CPU (TMP96C141AF/IC4) that runs at 19.66 MHz, a gat e array (E05B42/IC3), a 1M bi t PS-RAM (IC8), a 8M bit CG-ROM (IC6), and so on. The figure below shows the block diagram for the control circuit.

C N 1 ( P a r a lle l I /F )

C 165 P N L board

IC10 (8M P-ROM)

IC 7 (not m ounted)

IC 6 (8 M C G )*1

IC 8 (1 M P S -R A M )

Tr.(Q 4-25)

Data

IC 3 (E 05B 42)

IC 5(A T93C 45)

IC 4 (TM P 96C )

CN8

CN9

The following figure shows the data flow from the host computer to the printhead. Data sent from the host computer is conver ted t o i mage data and transmitted to the printhead through the gate array.

CPU TM P96C 141

O ption I/F

P a r a lle l I/F

G a te A rra y E05B 42

D a ta la tc h a n d data output

Print data conversio n 1

Print data conversio n 2

Im a g e d a ta tra n s fe r

RAM

In p u t B u ffe r

Line Edit B u ffe r

Im age B u ffe r

C N 2 (Type B I/F)

CN14 (Serial I/F)

C N 17 (Fan)

CN6 (PE-Front)

CN5 (PE-Rear)

C N 7 (Top)

CN4 (CRHP)

Address

IC 11(S LA 7024M )

IC 2(P S T592)

*1: O nly for K orea and T hai versions

IC 12(A 2917)

C N 3 (fro m P S )

C N 10(P F )

CN11(CR)

C N 16(R elease2)

C N 12(R elease1)

CN13(PG1)

Printhead drive circu it

Figure 2-2. Data Flow

Figure 2-1. Control Circuit Block Diagram

Operating Principles Control Circuit 25

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G.A(IC3)

PS T592(IC 2)

Vout

MRES

Vcc

GND

CPU(IC4)

/R S T

The following table lists the each function of the main components of the C272 MAIN board.

Table 2-1. Functions of the Main Board

IC Name Location Function

CPU IC4

Gate Array IC3

EEPROM IC5

ROM IC10 Contains the control program.

RAM IC8

CG-ROM IC7 Contains font data.

Detects conditions of various sensors and controls ph ase change for the CR motor.

Control the functions below:

• Memory management

• Printhead drive

• Phase change for the PF motor Contains such information as the factory

setting values for the various adjustments and the operational record of the printer.

Manages the following functions:

• Buffer used to receive data

• Data Extension

• CPU working area

2.1.2 System Reset Circuit

The reset IC (IC2) outputs a reset signal un der the conditions below to feed back the status to the CPU and the gate array:

† The printer is turned on or off. † The voltage level drops due to abnormal condition.

Receiving the signal, the CPU and the gate array immediately shut off the operation of each IC to prevent the pr inter fr om falling int o abnormal status caused by unstable power supply.

Figure 2-3. Reset Circuit

SLA7024M IC11 Constant current drive IC for CR Motor A2917 IC12 Constant current drive IC for PF Motor

Operating Principles Control Circuit 26

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2.1.3 Printhead Driver Circuit

Printhead drive begins with monitoring the 35 V line currently applied. This function enables the printer to change the peri od of time for applying current to t he printhead slightl y depending on the cond ition. As a result, the printer can output image at a constant density. The Pin 74 (AN1) on the CPU monitors the 35 V line’s condition.

Also, when a high-duty job is in process, the temperature inside the printhead will rise, and if the job is continued at a high temperature, it may damage the coil. Therefore, the Pin 73 (AN0) on the CPU monitors the temperature inside the printhead. With this operation called protection operation for hot head, printing is stopped when the temperature reaches the standard level 1. As the temperature drops to the standard level 2, printing begi ns again at a lower spee d, and then at a normal speed when the temperature lowers to the standard lev el 3.

E05B 42(IC 3)

HD1

HD24

AN0

ZD 2-25

Tr 4-27

CN9

# 2 ,3 ,6 ,7 ,1 0 ,1 1 ,1 4 , 15,18,19,22,23

CN8

# 1 ,4 ,5 ,8 ,9 ,1 2 ,1 3 ,1 6 , 17,20,21,24

HTM P

Once the current flows into the head drive resistor, the coil for the corresponding pin is activated with the cur rent. The current flown into the coil is converted into energy used to rush the pin. Note there is possibility that some unused energy returns to the board, which may damage the head driver transistor. For this reason, a zener diode is attached for each transistor to ground the current so the voltage over the standard level (15 V) does not directly return to the transistor.

AN1

35V

Figure 2-4. Printhead Drive Circuit

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2.1.4 CR Motor Driver Circuit

The CPU (IC4) directly controls the phase change of the CR motor. SLA7024M (IC11), the driver IC for the CR motor, performs bi-polar constant current drive to detects the amount of current flowing into the motor and chops the current supplied. With this operat ion, current flowing into the motor coil is regul ated.

The CR motor driver circuit is as shown below:

CPU(IC4)

PGO 0

PGO 1

PGO 2

PGO 3

SLA7024M (IC11)

IN A

IN -A

IN B

IN -B

-A

-B

CN11

CRA

CR-A

CRB

CR-B

2.1.5 PF Motor Driver Circuit

The gate array (IC3) manages the PF motor control. The driver IC for the PF motor, which enables the constant current drive, receives the phase change signal directly from the gate array and determines the phase to which current flows.

The PF motor driver circuit is as shown below:

E05B 42(IC 3)

PHASE A

PHASE B

PFI0A

PFI1A

PFI0B

PFI1B

122

119

A 2917(IC 12)

IN A

IN -A

IN B

IN -B

CN11

-A

-B

CRA

CR-A

CRB

CR-B

Figure 2-5. CR Motor Driver Circuit

Figure 2-6. PF Motor Driver Circuit

Operating Principles Control Circuit 28

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)

2.1.6 EEPROM Control Circuit

When the printer power is turned off, the EEPROM stores the factory settings and values in the areas that are not cleared in the user setting mode and also writes those values in the RAM. This sequence is managed by the CPU (IC4), which transmits data in the serial format.

The EEPROM control circuit is as shown below:

+5V

CPU(IC4)

P70

P71

P72

P73

AT93C 46(IC 5

R ear P E S ensor

Front P E S ensor

PW ,TOP S ensor

2.1.7 Sensor Circuit

Unlike the LQ-2170, both the CPU and the gate array monitor and control the correspondi ng sensors’ c onditions. Not e analog volt ages are all monitored by the CPU ports.

+5V

CPU(IC4)

P40

P36

AN2

GA(IC3)

P53

P27

IN T 7

+5V

H P Sensor

R elease S ensor 2

R elease S ensor 1

PG Sensor

Cover Ope Sensor

+5V

Figure 2-7. EEPROM Control Circuit

+5V

R elease1

R elease2

116

117

Figure 2-8. Sensor Circuit

Operating Principles Control Circuit 29

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DISASSEMBLY AND ASSEMBLY

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The contents of the chapter “Disassembly and Assembly” is the same as for the LQ-2170 Service Manual.

Disassembly and Assembly 31

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ADJUSTMENT

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4.1 Overview

The adjustment items required for the LQ-2180 are the same as for the LQ-2170. Therefore, see Table 4-1 in the LQ-2170 Service Manual and perform any necessary adjustment after disassembling/assembling the printer.

CAUTION

4.1.1 Pre-operation for the Adjustment Program

1. Get a continuous paper. (136-column pap er should be us ed to avoid printing on the platen.)

CAUTION

Though the conditions for each adjustment are the same as for the LQ-2170, the adjustment program used for the LQ-2180 is different. Therefore, observe the instructions given in the following sections.

„

Do not use cut sheet for the Bi-D adjustment. Since the Bi-D adjustment has to be performed with the t op and bottom edges of the sheet firmly set in the paper path, use of cut sheet will not provide accurate adjustment.

„

Use single continuous paper.

„

Adjustment program for serial dot matrix printer does not run without any paper loaded. So, be sure to turn the printer on first and then load paper.

NOTE: If you omit this operation, the printer will perform Uni-D

print instead of Bi-D.

5. Double-click “LQSERIES.EXE”. The program starts up and the screen below appears.

<*><*><*> E P S O N SID M Printer Service Program boot process <*><*><*>

Please select the m o del nam e.

LQ -2180 LQ -2580H LQ -2080 FX-980

E S C :Q u it U P /D o w n :S e le c t E N T E R :D e te r m in e

Figure 4-1. LQSERIES.EXE Initial Screen

6. Move the cursor to “LQ-2180” and press the Enter key.

7. The following screen appears.

2. Set the release lever to the continuous paper position.

3. Connect the printer and the PC and turn the printer on.

4. Press the Load/Eject button to send the paper to the stand-by position. Then press the LF/FF button more than 10 times until the leading edge of the paper is completely out of the printer.

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CAUTION

<*><*><*> EP S O N SID M P rinter S ervice Program boot process <*><*><*>

Select the destination .

Standard NLSP

E S C :Q u it U P /D o w n :S e le c t E N T E R :D e te r m in e

Figure 4-2. Destination Selection Screen

8. Check the printer to be adjusted for the desti nation; NLSP or Standard, then select the destination and press the Enter key.

CAUTION

Be sure to select the proper destination. If you select “Standard” despite you printer is NLSP version, the printer may not print NLSP characters.

<*><*><*> EPSON SIDM Printer Service Program boot process <*><*><*>

D o you start the S ervice P ro gram ?

P e rfo rm (B o o t th is P R O G R A M ) N o (R e -s e le c t m o d e l n a m e ) G o t (C h e c k th is m o d e l n a m e )

E S C : Q u it U P /D o w n : S e le c t E N T E R : D e te rm in e

Figure 4-3. Main Menu Selection Screen

10. Select “Perform”. The following screen appears.

„

Select “No” if you have input a wrong model name in the screen shown in Figure 4-1.

„

If you select “Got”, the printer flashes the model name stored in the RAM to the EEPROM once and reads it again.

9. The following screen appears.

Adjustment Overview 34

************** L Q -2 1 8 0 S E R V IC E P R O G R A M V e rs io n 1 .0 **************

<><> SERVICE ITEM S <><>

1. Bi-D Adjustment

2. Print Data on EEPRO M

3. S et or reply S tarting date

4. TP E R eset

E S C :Q u it U P /D o w n :S e le c t E N T E R :D e te r m in e

Figure 4-4. Main Menu Screen

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CAUTION

4.1.2 Bi-D Adjustment

„

The value “0” shown in the screen shown in Figure

This adjustment is made after the main board or the CR motor has been replaced. The purpose of this adjustmen t is to electrically correct the head wire’s point of impact during Bi-D printing. The adjusted value is stored in the specific addr ess in the EEPROM. Once the value is stored, it will not be erased if the printer is turned off or the EEPROM is reset.

CAUTION

If the printer is in the emulation mode, characters output for the Bi-D adjustment will be garbled. If so, turn ESC/P2 on using the EEPROM Initi alization mode.

1. Perform the pre-operation. (See Section 4.1.1.)

2. Select “1. Bi-D Adjustment”. The following screen appears.

************** L Q -2 1 8 0 S E R V IC E P R O G R A M V e rsio n 1 .0 **************

4-5 is the initial value used in the program, which varies from the one stored in t he EEPROM. However, if the main board has been replaced, the value in the EEPROM is replaced with “0”as the initial value.

„

The printing pattern below is a sample for the high speed mode. Be sure to perform the adjustment in draft copy mode and LQ mode as well.

speed draft m ode B i-D data = -1

speed draft m ode B i-D data = -0

speed draft m ode B i-D data = 1

< B i-D a d ju s tm e n t>

= 0 = 0 = 0

W rite to EEPROM [E N T E R ]

Previous [ESC]

Print out [SPACE]

H igh speed draft M ode Draft copy M ode LQ M ode

Select speed [U p /D o w n ]

A djust value [L e ft/R ig h t]

Figure 4-5. Initial Menu of the Bi-D Adjustment

3. Press the Space key to check the current Bi-D setting condition for the High speed draft mode. The printer prints the following pattern.

Adjustment Overview 35

Figure 4-6. Bi-D Pattern Sample

4. Output the patterns for the Draft Copy Mode and the LQ Mode, the rest of the three modes in the screen (Figure 4-5). Then check that the vertical lines in the middle row for each mode are aligned. (If no adjustment is needed, you can turn the printer of f, not continuing to the next step.)

5. Examine the patterns for the three modes output in the previous steps, and correct the value in the screen shown in Figure 4-5 until the vertical lines for the center value (Data = 0 in Figure 4-6) are aligned.

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6. When this adjustment is completed, if you need to perform another adjustment using this program, you can continue wit hout turning off the printer.

4.1.3 TPE Level Reset

Make this adjustment when the main board or Top PE Sensor has been replaced. Generally, light level emitted from the photo diode in a photo sensor lowers with age. For this reason, the printer renews the current paper remaining level by detecting the black level of the platen each time the printer is turned on or paper is fed. When the TPE level is reset, FF is written and it approaches 00 as the t ime goes by. If this operation is not performed, paper out condition may be detected despite paper is set.

1. Perform the pre-operation. (See Section 4.1.1.)

2. Select “TPE Reset” in the main menu screen ( Figure 4-4) and pr ess the Enter key. The screen below appears.

************** L Q -2 1 8 0 S E R V IC E P R O G R A M V e rsio n 1 .0 **************

D o you w ant to reset Top paper-end detection level?

Yes No

E S C :P r e v io u s U P /D o w n :S e le c t E N T E R : D e te r m in e

Figure 4-7. Screen - TPE Reset

3. Select “Yes” and press the Enter key. FF is written in EEPROM when the printer power is turned off.

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4.1.4 Writing the User-characteristic Data

Use this function to check the specific records of the printer used by your customer. Also, you can renew the starting date using this program. Since there is no standardized service operation using this function, you can use it whenever necessary.

1. Perform the pre-operation. (See Section 4.1.1.)

2. Select “Set or Reply Starting Date” and press the Enter key. The screen below appears.

CAUTION

************** LQ -2180 S E R V IC E PR O G R A M V ersion 1.0 **************

When using this function, the printer must be in the normally operative condition. Make sure the printer is free from any error conditions such as paper out, f atal error, and so on. Otherwise, the function is not effective.

<*><*><*> Set or R eply Starting date <*><*><*>

[To check the current status]

3. Select “Characteristic Status Code” and pres s the Enter key. The following screen appears.

C haracteristic status code

1 . S ta rtin g d a te -----> 9 9 / 1 1 1 2 . T o ta l p rin tin g lin e c o u n t(O d d c o u n te r) ---> 3577 line 3 . T o ta l p o w e r o n h o u r --->

4. Total printing line count for rib b o n c h a n g e tim in g (T rip c o u n te r) ---> 3577 lines

ESC:Previous

Figure 4-9. Screen - Characteristic Status Code

C haracteristic status code Set starting year / m onth / date

E S C :Q u it U P /D o w n :S e le c t E N T E R :D e te r m in e

Figure 4-8. Screen - Set or Reply Starting Date

[To renew the Starting Year / Month / Date]

4. Select “Set Starting year / month / date” and press the Enter key. The following screen appears.

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Setting Starting Year/M onth/D ay

In p u t fo rm a t: 1 9 9 9 /1 /1 ---> 990101

P le a s e in p u t 6 d ig its > >

Figure 4-10. Screen - Setting Starting Year / Month / Date

5. Input a 6-digit data. Be sure to input it correctly since this programs does not perform comparison check with the system timer. If you input a wrong data, start from the beginning.

Adjustment Overview 38

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TROUBLESHOOTING

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5.1 Overview

This chapter contains flowcharts and checkpoint tables to help you troubleshoot the print er. The ch eckpoint t ables l et you i dentif y the f aulty part or unit by checking the v a lues or ranges listed for each component.

5.2 Troubleshooting Information

This section gives you troubleshooting information to let you test points for replaceable units.

5.2.1 Printhead

The information in this section is the same as for the LQ-2170.

5.2.2 Sensors

The check method, including test pin number and meter reading, for each sensor is the same as for the LQ-2170. However, be careful of the CN 12 and 16 that are not common to the LQ-2170. The change made for LQ-2180 is as shown below.

Table 5-1. Sensor Test Points

Sensor

Connector

Number

CN12 (Release sensor 1)

CN16 (Release

sensor 2)

Test Pin

Number

1: Release 1 2: GND

1: Release 2 2: GND

Test method Meter reading

Place one lead on Pin 1 and the other lead on Pin 2 and check the voltage while toggling the sensor lever.

Same as for CN12

See the LQ-2170 Service Manual.

Other sensors

See the LQ-2170 Service Manual.

5.2.3 Motors

The motor test points are the same as for the LQ-2170.

5.2.4 Error Codes with Indicators and Buzzer

The Error codes with Indicators and buzzer are the same as for the LQ-

2170.

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5.3 Unit Level Troubleshooting

The information for this section is the same as for the LQ-2170 except for some points. The points to be changed are as follows:



Point: All flowcharts provided in this section

C165 MAIN Board



Point: Flowchart 2-1

CN12

→

272MAIN Board

→

CN12 or CN16

5.4 Repairing the C165 PSB/PSE Board

The entire information for this section is the same as for the LQ-2170.

5.5 Repairing the C272MAIN Board

This section provides instructions to repair the C272 MAIN board assembly. It describes various problems, symptoms, likely causes, and solutions. The checkpoint column provides proper waveforms, resistance values, and other information for each component of C272 MAIN Board.

Table 5-2. Repairing the C272MAIN Board (1/3)

Problem Cause Checkpoint Solution

The printer does not operate at all.

Reset IC2 is defective.

The PROM (IC10) is not selected.

Check the voltage waveforms of the V CC signal (CH1: IC2 pin 3) and VOUT signal (CH2: IC2 pin 2) when power is turned on.

Check for a change in the signal from HIGH/LOW at pin 22 of IC10.

Replace IC2.

Replace IC10 (or replace the main board).

NOTE:This information is necessary only for servicers who repair to

the component level. Servicers who repair to the unit lev el (including all servicers in the U.S.) can ignore this section.

The PSRAM (IC8)

Check for a change in the signal from HIGH/LOW at pin 1 of the IC8.

Replace IC8 (or replace the main board).

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Table 5-3. Repairing the C272MAIN Board (2/3) Table 5-4. Repairing the C272MAIN Board (3/3)

Problem Cause Checkpoint Solution

Check the oscillator signal at pins 26 or 27 of the CRU1.

If the signal is not correct,

The printer does not operate at all.

Carriage operation is abnormal.

CRU1 is defective.

Check input signal wavefo rm (CH1) at pins 1, 2, 3, and 4 o f IC4. Check output signal waveform at pins 8, 1, 18, and 11 of IC11.

IC11 or IC4 is defective.

replace IC4 (or replace the main board). Otherwise, replace CRU1.

If the input signal is not correct, replace IC4 (or replace the main board). If the output signal is not correct, replace IC11.

Problem Cause Checkpoint Solution

• Check input signal waveform at pins 1, 2, 23, and 24 of IC2.

Paper feed is abnormal.

No data is printed.,

IC1 is defective.

IC3 is defective.

IC2 is defective.

IC3 is defective.,

• Check output signal waveform at pins 6, 3, 18, and 21 of IC12.

• Check the output signal waveform at pin 111 of IC3.

If the input signal is not correct, replace IC3. If the input signal is correct and the output signal is not correct, replace the IC12.

If this signal is not output, replace IC3.

• Check the voltage waveform at pin HD1 - HD24 of IC3.

• Check the voltage waveform (CH2) for each transistor.

If the head drive signal is not output, replace IC3. If the head drive signal is output, replace the head drive transistor.

IC3 is defective.

Check the output signal at pins 68, 69, 70, and 71 of IC3.

If there is no output signal, replace IC3.

A particular dot fails to print.,

IC3 is defective or one of the head drive transistors is defective (Q4 Q27).

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5.6 Repairing the Printer Mechanism

The information for this section is also the same as for the LQ-2170 except for the point below.



Point: Table 5-8

CN12

→

CN12 or CN16

Troubleshooting Repairing the Printer Mechanism 43

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MAINTENANCE

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The contents of the chapter “Maintenance” is the same as for the LQ-2170 Service Manual.

Maintenance 45

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APPENDIX

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7.1 EEPROM Address Map

This chapter provides EEPROM Address Map for LQ-2180 and component layouts and circuit diagram for the C272 Main Board.

NOTE:The data of two or more bytes are assigned in such was as

lower byte to lower address, higher byte to higher address.

Table 7-1. EEPROM Address Map (1/7)

Address Data Data Format

Q-pit

data

00H, 01H (reserved) 0000H 0000H

Area 1

02H, 03H Character

table selection

0: PC437 1: PC850 2: PC860 3: PC863 4: PC865 5: PC861 6: BRASCII 7: Abicomp 8: ISO Latin 1 9: Roman 8 10:PC437 Greek 11:PC852 12:PC853 13:PC855 14:PC857 15:PC864 16:PC866 17:PC869

19:ISO 8859-7 20:MAZOWIA 21:Code MJK 22:Bulgaria 23:Estonia 24:PC774 25:ISO 8859-2 26:PC866 LA T 27:PC866 UKR 28:Hebrew 7 29:Hebrew 8 30:PC862 31:PCAPTEC 32:PC708 33:PC720 34:PCAR864 35:PC858 36:ISO 8859-15

0000H 0000H

18:ISO Latin 1T 37:Italic U.S.A. 38:Italic France 39:Italic Germany I 40:Italic U.K.

41:Italic Denmark 42:Italic Sweden 43:Italic Italy 44:Italic Spain

0000H 0000H

Factory

setting

(PC437)

Table 7-2. EEPROM Address Map (2/7)

Address Data Data Format

04H, 05H Page length for rear

tractor

06H, 07H Page length fo r front

tractor

08H, 09H Page length fo r CSF

bin 1

0AH, 0BH Page length for CSF

bin 2

0CH, 0DH TOF adjustment

value for rear tractor

0EH, 0FH TOF adjustment

value for front tractor

10H, 11H TOF adjustment

value for CSF bin 1

12H, 13H TOF adjustment

value for CSF bin 2

14H, 15H TOF adjustment

value for rear manual insertion

16H, 17H TOF adjustment

value for front manual insertion

18H, 19H Bottom margin for

rear tractor

1AH, 1BH Bottom margin for

front tractor

1CH Font selection

1 to 22x360 (by 1/360 inch) 0000H: 11 inch (the default)

1 to 22x360 (by 1/360 inch) 0000H: 22 inch (the default)

-60 to 360 (4.2 mm to 8.5 mm + 1 inch, by 1/360 inch)

1 to 22x360 (by 1/360 inch), 0000H: 11inch (the default)

0: Roman 1: Draft 2: Sans serif

4: Prestige 5: Script 6: Others

3: Courier

(the default)

Q-pit

data

0000H

(11 inch)

0000H

(11 inch)

0000H

(22 inch)

0000H

(22 inch)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(11 inch)

0000H

(11 inch)

00H

(Roman)

Factory

setting

0000H

(11 inch)

0000H

(11 inch)

0000H

(22 inch)

0000H

(22 inch)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(8.5 mm)

0000H

(11 inch)

0000H

(11 inch)

00H

(Roman)

Appendix EEPROM Address Map 47

Page 48

LQ-2180 Revision A

Table 7-3. EEPROM Address Map (3/7) Table 7-4. EEPROM Address Map (4/7)

Address Data Data Format

1DH Pitch selection

1EH (reserved) 00H 00H 1FH Print direction

setting

20H I/F mode selection

21H Auto I/F wait time

setting

22H Auto line feed

Auto tear off Skip over

perforations High speed dr aft Input buffer

---

0: 10 cpi 1: 12 cpi 2: 15 cpi

0: Bi-d. 1: Uni-d. 2: Auto

0: Auto I/F selection 1: Parallel I/F 2: Type-B I/F

10:10 sec. 30:30 sec. 00:10 sec. (the default)

b0:Auto line feed

b1:Auto tear off

b2:Skip over perforation

b3:High speed draft

b4:Input buffer

b5:(reserved) b6:(reserved) b7:(reserved)

3: 17 cpi 4: 20 cpi 5: Proportional

0: Off, 1: On

0: On, 1: Off

Q-pit

data

00H

(10 cpi)

00H

(Bi-d.)

00H

(Auto)

0AH

(10 sec.)

00H 00H

Factory

setting

00H

(10 cpi)

00H

(Bi-d.)

00H

(Auto)

0AH

(10 sec.)

Address Data Data Format

23H Software

0 slash Buzzer Roll paper Auto CR A. G. M.

---

24H,

25H 26H Other font

27H Backup flags 1

28H Backup flags 2

Tear-off adjustment value

selection

Copy mode

In tear-off state Bin select

b0:Software

0: ESC/P2, 1: IBM 2391 Plus

b1:0 slash,

0: Off, 1: On

b2:Buzzer

0: On, 1: Off

b3:Roll paper

0: Off, 1: On

b4:Auto CR (IBM)

0: Off, 1: On

b5:A. G. M. (IBM)

0: Off, 1: On b6:(reserved) b7:(reserved)

-128 to +127 (by 1/360 inch) 0000H 0000H

0: Roman 1: Sans Serif H 2: OCR-B

0: Friction Bin 1 or Tractor not

Tear off 1: Friction Bin 1 2: Friction Bin 2 3: Friction Card 4: Tractor & Tear off

3: Orator 4: Orator-S 5: Script C

Q-pit data

00H 00H

Factory

setting

Appendix EEPROM Address Map 48

Page 49

LQ-2180 Revision A

Table 7-5. EEPROM Address Map (5/7) Table 7-6. EEPROM Address Map (6/7)

Address Data Data Format

29H Panel mask

pattern 1

b0:LOAD function b1:EJECT function

Q-pit

data

00H 00H

b2:FONT selection b3: PITCH selection b4:TEAR OFF function b5:BIN selection b6:Draft self test b7: LQ self test

2AH Panel mask

pattern 2

b0:LF function b1:FF function

00H 00H

b2:Micro Adjust function b3:Pause function b4:Data dump b5:Default setting b6:Bi-d. adjustment b7:(reserved)

2BH Manual insertion

wait time

3 to 30 (by 0.1 sec.), 00H: 2 sec when Normal mode. (same as 3

00H

(2or3 sec.)

sec when copy mode. defaul t)

2CH Tear-off wait time 3 to 30 (by 0.1 sec.), 00H: 3 sec.

(the default)

2DH to

(reserved) 00H 00H

00H

(3 sec.)

2EH 2FH Copy mode

30H-33H Driving line count

for ribbon change

0: Off 1: On

00H 00H

0 - 0FFFFFFFFH (count) 000000

00H

timing

34H-37H Driving Hour 0 - 0FFFFFFFFH (minutes) 000000

00H

38H-

3BH

Driving Line Count 0 - 0FFFFFFFFH (count) 000000

00H

Factory

setting

00H

(2or3 sec.)

00H

(3 sec.)

000000

00H

000000

00H

000000

00H

Address Data Data Format

3CH Starting Year 0 - 99 (the last two figures of

Q-pit data

00H 00H

Anno Domini)

3DH Starting Month 1 - 12 00H 00H 3EH Starting Date 1 - 31 00H 00H 3FH Black paper mode

paper width measure

b0:black paper mode

0: Off, 1: On

b1:paper width measure

00H 00H

0: On, 1: Off

b2:b2 to b7: (reserved)

40H to

41H

TOF Minimum value

-120 to -60, 0: -60 (4.2 mm) Value out of the range above is

00H 00H

considered -60.

42H I/F timing data bit0-3: BUSY timing data

00H 00H

bit4-7: XAACK timing data

43H

44H to

(complement of 42H)

(reserved) 00H 00H

FFH FFH

5DH

5EH,

Paper edge length 0000H 0000H

5FH

60H,

61H

Page length for rear manual

1 to 22x360 (by 1/360 inch), 0000H: 22 inch (the default)

0000H

(22 inch)

insertion

62H,

63H

Page length for front manual

1 to 22x360 (by 1/360 inch), 0000H: 22 inch (the default)

0000H

(22 inch)

insertion

64H to

66H

Sub-number for customization

67H (reserved)

00H to 09H

000000H

(Standard)

00H 00H

Factory

setting

0000H

(22 inch)

0000H

(22 inch)

000000H

(Standard)

Appendix EEPROM Address Map 49

Page 50

LQ-2180 Revision A

Table 7-7. EEPROM Address Map (7/7)

Address Data Data Format

Area 2

68H Market

69H IBM character table

70H (reserved) 00H 00H 71H Check sum of Area 2 00H 00H

Area 3

72H Vp adjustment value 80H *a) 73H Vp adjustment value

(complement of 72H)

74H Bi-d adjustment value for high

speed draft / draft mode

75H Bi-d adjustment value for draft

copy mode

76H Bi-d adjustment value for LQ

mode

77H (reserved) 00H 00H

0: Standard version 1: NLSP version 0: Table2 1: Table1

-12 to +12 (by 1/720 inch)

Q-pit

data

00H 00H

7FH *a)

00H *a)

Factory

setting

78H TPE level FFH FFH 79H TPE adjustment position -10 to +10

(by 1/180 inch)

7AH to

7FH

(reserved) 00H 00H

00H 00H

*a) These data are fixed by each printer hardware in the factory. They

should not be changed afterwards.

Appendix EEPROM Address Map 50

Page 51

LQ-2180 Revision A

7.2 Connector Summary

The following figure shows how primary components are connect ed.

Printer M echanism

P F M o to r

CR Motor

PG Sensor

R elease Lever P osition Sensor

PE - R ear S ensor

PE- Front Sensor

H P Sensor

PW Sensor

P rinthead

Fan

C ase O pen Sensor

CN2

C165PNL Board

CN1

The table below shows the cable alignment of the C272 Main Board.

Table 7-8. C272 Main Board Connection

Board Connector Function Pins

CN1 Parallel interface 36 CN2 Type B interface 36 CN3 C165 PSB/PSE board assembly 12 CN4 HP sensor 3 CN5 Rear PE sensor 3 CN6 Front PE sensor 2 CN7 TOP sensor 4 CN8 Printhead (F) 18

C272 MAIN Board

CN9 Printhead (R) 16 CN10 PF motor 4 CN11 CR motor 5 CN12 Release lever position sensor 1 2 CN13 PG sensor 2 CN14 CSF 10 CN15 PNL board assembly 22 CN16 Release lever position sensor 2 2 CN17 Fan 2

CSF

CN15

CN14

CN8 CN9

CN17

C272MAIN Board Assem bly

CN1

CN2

P a r a lle l I/F

O p tio n I/F

CN7

CN4

CN6

Host Com puter

CN12

CN5

CN16

C166PSB/PSE B oard

CN13

CN3

CN10

CN11

Figure 7-1. Cable Connections

Appendix Connector Summary 51

Page 52

LQ-2180 Revision A

NOTE:The table below provides information of the connector that

vary from C165 Main Board used in LQ-2170.

Figure 7-2. Connector Pin Assignment (Changed/new items only)

LQ-2170 (C165MAIN) LQ-2180 (C272MAIN)

Connector Function Pin alignment Connector Function Pin alignment

1 CN14 CSF

2 CN12 Release lever position

3 --- --- --- CN17 Fan

1: A 2: B 3: -A 4: -B 5: HOLD 6: +5V 7: GND 8: GND 9: +35V 10:+35V 1: RELEASE 1 2: GND 3: RELEASE 2 4: GND

CN14 CSF

CN12 Release lever position

CN16 Release lever position

1: +35V 2: +5V 3: HOLD 4: +35V 5: -A 6: B 7: GND 8: GND 9: A 10:-B 1: RELEASE 1 2: GND 1: RELEASE 2 2: GND 1: PE 2: GND

Appendix Connector Summary 52

Page 53

LQ-2180 Revision A

7.3 Component Layout

Figure 7-3. C272Main Component Layout - Component Side

Appendix Component Layout 53

Page 54

LQ-2180 Revision A

Figure 7-4. C272Main Component Layout - Soldering Side

Appendix Component Layout 54

Page 55

LQ-2180 Revision A

7.4 Circuit Diagram

See the following page for the dircuit digram of the C272 Main Board.

Appendix Circuit Diagram 55

Page 56