Lexmark Jetprinter 4079-00 series User manual

4079-00X
Color Jetprinter™ 4079 plus
IBM Color Jetprinter PS 4079
Lexmark is a trademark of Lexmark
International, Inc., registered in the
United States and/or other countries.
Color Jetprinter is a trademark of
Lexmark International, Inc.
• Table of Contents
•Index
• Safety and Notices
• Trademarks
• Start Diagnostics
• Main Menu

Second Edition (May, 1997)
The following paragraph does not apply to the United Kingdom or any
country where such provisions are inconsistent with local law: LEXMARK
INTERNATIONAL, INC. PROVIDES THIS PUBLICATION “AS IS” WITHOUT
WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING,
BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. Some states do not allow
disclaimer of express or implied warranties in certain transactions, therefore,
this statement may not apply to you.
This publication could include technical inaccuracies or typographical errors.
Changes are periodically made to the information herein; these changes will be
incorporated in later editions of the publication. Improvements or changes in the
products or the programs described in this publication may be made at any
time. Publications are not stocked at the address given below; requests for
publications should be made to your point of purchase.
Comments may be addressed to Lexmark International, Inc., Department
D22A/035-3, 740 New Circle Road NW, Lexington, Kentucky 40550, U.S.A.
Lexmark may use or distribute any of the information you supply in any way it
believes appropriate without incurring any obligation to you.
Lexmark is a trademark of Lexmark International, Inc., registered in the United
States and/or other countries.
Color Jetprinter is a trademark of Lexmark International, Inc.
Other trademarks are the property of their respective owners.
©Copyright Lexmark International, Inc. 1995, 1997
All rights reserved.
UNITED STATES GOVERNMENT RESTRICTED RIGHTS
This software and documentation are provided with RESTRICTED RIGHTS.
Use, duplication or disclosure by the Government is subject to restrictions as
set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer
Software clause at DFARS 252.227-7013 and in applicable FAR provisions:
Lexmark International, Inc., Lexington, KY 40550 USA.
4079-00X

Contents iii
4079-00X
Contents 1
Notices and Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . vii
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Coated Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Ink Cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Operating Temperatures And Humidity . . . . . . . . . . . . . . . . . 1-2
Tools. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Printer Emulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Operator Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Printhead Capping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Adjusting The Printhead Position Lever . . . . . . . . . . . . . . . . . 1-6
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Error Code Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Logged Error Code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Operator Codes And Symptom Table . . . . . . . . . . . . . . . 2-8
Service Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Carriage Drive Service Check . . . . . . . . . . . . . . . . . . . . 2-12
Carriage Motor Drive Data Service Check. . . . . . . . . . . 2-13
Carriage Position Service Check . . . . . . . . . . . . . . . . . . 2-14
Check Paper Service Check . . . . . . . . . . . . . . . . . . . . . 2-15
Cover Open Service Check . . . . . . . . . . . . . . . . . . . . . . 2-17
Hard Disk Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Head Cap Position Service Check. . . . . . . . . . . . . . . . . 2-18
Head Heater Service Check. . . . . . . . . . . . . . . . . . . . . . 2-20
Head Temp/Heat Pulse Service Check . . . . . . . . . . . . . 2-20
Host Print Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-22
Ink Cartridge Service Check. . . . . . . . . . . . . . . . . . . . . . 2-22
Ink Flow Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Ink Sensor Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-26
Logic Board And Related Cables Service Check. . . . . . 2-29
Operator Panel Service Check. . . . . . . . . . . . . . . . . . . . 2-31
Paperfeed Electrical Service Check. . . . . . . . . . . . . . . . 2-32
Paperfeed Mechanical Service Check . . . . . . . . . . . . . . 2-36
Paperfeed Motor Service Check . . . . . . . . . . . . . . . . . . 2-38
Power Supply Service Check. . . . . . . . . . . . . . . . . . . . . 2-39
Print Escapement Service Check. . . . . . . . . . . . . . . . . . 2-41

iv
4079-00X
Print Quality Service Check. . . . . . . . . . . . . . . . . . . . . . 2-43
Purge Unit Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-45
RAM (Memory) Service Check . . . . . . . . . . . . . . . . . . . 2-46
Undetermined Problem Service Check . . . . . . . . . . . . . 2-47
Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Testing The Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Using The Menu System. . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Operator Test Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Test Print A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Print Sample . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Printhead Cleaning Procedures. . . . . . . . . . . . . . . . . . . . 3-4
Printing Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Power-on Self Test (Post) . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Controller Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Paper Load Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Printer Wrap Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
LED Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
LCD Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
RAM Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Last Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Print Test Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Clean Heads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Quick Disk Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Disk Test/Clean. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Format Disk. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Software Version. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Service Adjustment Mode . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Lubrication Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Head Gap Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Service Adjustment Mode . . . . . . . . . . . . . . . . . . . . . . . . 4-4
Print Position Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Releasing Plastic Latches . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Ink Tube Servicing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9
Printhead Uncapping and Carriage Centering. . . . . . . . . 4-9
Manual Carriage Centering (No Power) . . . . . . . . . . . . 4-10
Manual Printhead Capping (Disabled Machine) . . . . . . 4-11
Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11

Contents v
4079-00X
Carriage Card, Carriage Card Holder Cover Removal. . 4-12
Carriage Encoder And Paper Width Sensor Removal . . 4-15
Carriage Frame Removal. . . . . . . . . . . . . . . . . . . . . . . . 4-19
Carriage Ribbon Cables Removal . . . . . . . . . . . . . . . . . 4-20
Carriage Cable Handling . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Carriage Shaft, Belt, And Ink Supply Removals. . . . . . . 4-23
Controller Board And Logic Board Removal . . . . . . . . . 4-27
Cover Removals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28
Hard Disk Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Ink Cartridge Assembly Removal. . . . . . . . . . . . . . . . . . 4-31
Inner Cover Spur Unit Removal . . . . . . . . . . . . . . . . . . . 4-34
Lower Frame Removal. . . . . . . . . . . . . . . . . . . . . . . . . . 4-35
Operator Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-36
Paperfeed And Eject Rollers Removal. . . . . . . . . . . . . . 4-37
Paperfeed Motor Removal . . . . . . . . . . . . . . . . . . . . . . . 4-39
Paper Sensor Removal . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Pickup Roller, Paper Lifting Plate Removal . . . . . . . . . . 4-41
Pinch Roller Base Unit Removal . . . . . . . . . . . . . . . . . . 4-42
Platen Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-44
Power Supply Removal . . . . . . . . . . . . . . . . . . . . . . . . . 4-45
Printhead, Printhead Cover Removal. . . . . . . . . . . . . . . 4-46
Print Timing Slit Removal. . . . . . . . . . . . . . . . . . . . . . . . 4-47
Purge Unit Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-49
Separation Sheet Removal . . . . . . . . . . . . . . . . . . . . . . 4-50
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Carriage Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Right Connector Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Left Connector Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2
Control Card 4079 - 001. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Control Card 4079 - 002. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Logic Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Ink Supply Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
Paper Path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Safety Inspection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Lubrication Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
How To Use This Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . 7-1
Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Covers (Cont.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Inner Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Printer Electronics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Power Supply and Control Panel . . . . . . . . . . . . . . . . . . 7-10

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4079-00X
Carriage and Printhead . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-14
Purge Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Print Timing Encoder. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Carriage Ink Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
Carriage Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Carriage Drive Frame . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
Ink Supply Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
Ink Return Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
Ink Cartridge Interlock . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30
Sheetfeed Entry. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32
Sheetfeed Pinch Roller . . . . . . . . . . . . . . . . . . . . . . . . . 7-34
Paperfeed/Ejector Roller . . . . . . . . . . . . . . . . . . . . . . . . 7-36
Sheetfeed Separation . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38
Paperfeed Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-42
Hard Disk and Options . . . . . . . . . . . . . . . . . . . . . . . . . 7-44
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .X-1

Notices and Safety Information vii
4079-00X
Notices and Safety Information
Safety Information
•This product is designed, tested and approved to meet strict global
safety standards with the use of specific Lexmark components. The
safety features of some parts may not always be obvious. Lexmark is
not responsible for the use of other replacement parts.
•The maintenance information for this product has been prepared for use
by a professional service person and is not intended to be used by
others.
•There may be an increased risk of electric shock and personal injury
during disassembly and servicing of this product. Professional service
personnel should understand this and take necessary precautions.
Consi
g
nes de Sécurité
•Ce produit a été conçu, testé et approuvé pour respecter les normes
strictes de sécurité globale lors de l'utilisation de composants Lexmark
spécifiques. Les caractéristiques de sécurité de certains éléments ne
sont pas toujours évidentes. Lexmark ne peut être tenu responsable de
l'utilisation d'autres pièces de rechange.
•Les consignes d'entretien et de réparation de ce produit s'adressent
uniquement à un personnel de maintenance qualifié.
•Le démontage et l'entretien de ce produit pouvant présenter certains
risques électriques, le personnel d'entretien qualifié devra prendre
toutes les précautions nécessaires.
Norme di sicurezza
•Il prodotto è stato progettato, testato e approvato in conformità a severi
standard di sicurezza e per l’utilizzo con componenti Lexmark specifici.
Le caratteristiche di sicurezza di alcune parti non sempre sono di
immediata comprensione. Lexmark non è responsabile per l’utilizzo di
parti di ricambio di altri produttori.
•Le informazioni riguardanti la manutenzione di questo prodotto sono
indirizzate soltanto al personale di assistenza autorizzato.
•Durante lo smontaggio e la manutenzione di questo prodotto, il rischio
di subire scosse elettriche e danni alla persona è più elevato. Il
personale di assistenza autorizzato, deve, quindi, adottare le
precauzioni necessarie.

viii Service Manual
4079-00X
Sicherheitshinweise
•Dieses Produkt und die zugehörigen Komponenten wurden entworfen
und getestet, um beim Einsatz die weltweit gültigen
Sicherheitsanforderungen zu erfüllen. Die sicherheitsrelevanten
Funktionen der Bauteile und Optionen sind nicht immer offensichtlich.
Sofern Teile eingesetzt werden, die nicht von Lexmark sind, wird von
Lexmark keinerlei Verantwortung oder Haftung für dieses Produkt
übernommen.
•Die Wartungsinformationen für dieses Produkt sind ausschließlich für
die Verwendung durch einen Wartungsfachmann bestimmt.
•Während des Auseinandernehmens und der Wartung des Geräts
besteht ein zusätzliches Risiko eines elektrischen Schlags und
körperlicher Verletzung. Das zuständige Fachpersonal sollte
entsprechende Vorsichtsmaßnahmen treffen.
Pautas de Se
g
uridad
•Este producto se ha diseñado, verificado y aprobado para cumplir los
más estrictos estándares de seguridad global usando los componentes
específicos de Lexmark. Puede que las características de seguridad de
algunas piezas no sean siempre evidentes. Lexmark no se hace
responsable del uso de otras piezas de recambio.
•La información sobre el mantenimiento de este producto está dirigida
exclusivamente al personal cualificado de mantenimiento.
•Existe mayor riesgo de descarga eléctrica y de daños personales
durante el desmontaje y la reparación de la máquina. El personal
cualificado debe ser consciente de este peligro y tomar las
precauciones necesarias.

Notices and Safety Information ix
4079-00X
Informa
ç
ões de Se
g
uran
ç
a
•Este produto foi concebido, testado e aprovado para satisfazer os
padrões globais de segurança na utilização de componentes
específicos da Lexmark. As funções de segurança de alguns dos
componentes podem não ser sempre óbvias. A Lexmark não é
responsável pela utilização de outros componentes de substituição.
•As informações de segurança relativas a este produto destinam-se a
profissionais destes serviços e não devem ser utilizadas por outras
pessoas.
•Risco de choques eléctricos e ferimentos graves durante a
desmontagem e manutenção deste produto. Os profissionais destes
serviços devem estar avisados deste facto e tomar os cuidados
necessários.
Informació de Se
g
uretat
•Aquest producte està dissenyat, comprovat i aprovat per tal d'acomplir
les estrictes normes de seguretat globals amb la utililització de
components específics de Lexmark. Les característiques de seguretat
d'algunes peces pot ser que no sempre siguin òbvies. Lexmark no es
responsabilitza de l'us d'altres peces de recanvi.
•La informació pel manteniment d’aquest producte està orientada
exclusivament a professionals i no està destinada a ningú que no ho
sigui.
•El risc de xoc elèctric i de danys personals pot augmentar durant el
procés de desmuntatge i de servei d’aquest producte. El personal
professional ha d’estar-ne assabentat i prendre les mesures
convenients.

xService Manual
4079-00X
Chinese Safet
y
Information
Korean Safet
y
Information

Notices and Safety Information xi
4079-00X
Preface
This service manual is designed to be used by printer repair
technicians during servicer training and when repairing a failing
printer. The technician should first understand the failing symptom.
Then begin at “Start” (page 2-1) in this service manual and follow the
steps to diagnose and fix the failure.
This manual is divided into the following chapters:
1. “General Information” introduces the printer.
2. “Diagnostic Information” includes the procedures that give you
step-by-step instructions to isolate the failing FRU.
3. “Diagnostic Aids” includes test procedures that are used to
diagnose problems and test the machine after repairs have been
made.
4. “Repair Information” shows how to change the failing FRU and
make necessary adjustments.
5. “Connector Locations” shows how to find test points and
illustrates the paper paths and ink supply system.
6. “Preventive Maintenance” includes suggestions for maintaining
the printer.
7. “Parts Catalog” lists the part numbers for the FRUs.

General Information 1-1
4079-00X
1. General Information
This chapter introduces and describes the Lexmark™ Color
Jetrinter™ 4079 plus, the tools needed to repair it, and the customer
switch settings that control the features of the printer.
Description
The Color Jetprinter is a tabletop four-color inkjet printer for draft or
letter quality applications in an attended PC attach environment.
This printer uses four printheads with 64 nozzles each to produce
both letter-quality and draft output.
Graphics resolution is available up to 360 dots-per-inch (dpi),
depending on the printer menu selection and application. The printer
prints in one direction only when printing graphic images.
You may use cut-sheet paper up to 297 mm (11.7 in.) by 432 mm
(17.0 in.).
Coated Paper
Special coated papers are recommended for best printing results.
Included with each supply of paper is a special brown cleaning sheet
called
maintenance paper . After printing a number of pages, print
the nozzle test on this paper in order to clean the pickup and feed
rollers.
After 2000 pages, wipe the platen and inside of the print cover to
remove any ink mist that may accumulate and prevent staining of the
print paper.
The capacity of the paper tray is approximately 100 sheets of coated
letter-size paper. Envelopes and postcards can be fed from the
paper tray as well.
An easy-to-use operator panel on the front of the printer provides
control of print resolution and style.

General Information 1-2
4079-00X
Ink Cartridges
Each ink cartridge contains 30 grams of liquid ink, and is rated for as
much as 700 pages of text.
Each color cartridge is physically coded to fit in its own color slot.
Also, the ink cartridge has an electronic label which is sensed by the
cartridge sensor. The ink is nontoxic, but contains isopropyl alcohol
and should not be swallowed or gotten in the eyes. It will perma-
nently stain clothing.
To prevent ink leaks, always ship the printer with the ink cartridges
installed, and with the carriage locked in place.
Also make sure the four printheads are capped before switching the
printer off. A star (*) is displayed when the heads are automatically
capped.
Operating Temperatures And Humidity
Temperature and humidity levels are important to the correct opera-
tion of the printer. The ranges are:
Temperature 15-30° C (59-86° F)
Humidity 5-95% (no condensation)
Tools
The removal and adjustment procedures described in this manual
require the following tools and equipment:
•Phillips screwdriver (small)
•Flat-blade screwdriver
•Fuse puller
•Analog volt ohmmeter(1) (a digital volt ohmmeter may also be
used).
•Feeler gauge for head gap adjustment
•Syringe
•Drop cloth

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•Grease
•Cleaning tissue
•Magnifier
Refer to the parts catalog for part numbers of special tools. When
taking voltage readings, always use frame ground unless another
ground is specified.
When you use the syringe, clip the end of the tip so it will fit over the
small tube connectors and into the ink joints.
NOTE: Be careful not to separate the syringe plunger from the body
of the syringe. The ink may leak and stain clothing and other items.
Make sure the machine is in a suitable service area and place a drop
cloth under the machine when you service it.
Printer Emulation
Before you use your printer with most software programs, you must
select the appropriate printer driver from that program’s printer
selection menu. When you select a printer from the list, a driver is
installed that allows your documents to be printed correctly on your
printer.
If the printer does not appear on the list in your program, you can
use any of the following printer driver emulations, listed here in the
order of their priority. Choose the first printer on the list that appears
in your program’s list of printers.
If none of these choices appear in your software, you may choose
another PostScript printer. However, if you choose a non-color
printer, your output will have only black print.
PRIORITY PRINTER
11 QMS ColorScript 100 (Postscript mode)
2Seiko ColorPoint PS Model 14

General Information 1-4
4079-00X
Operator Panel
You can access various printing functions and options using the
printer’s operator panel.
Indicators
There are several indicators in the operator panel that show the sta-
tus of the machine.
Display This 2-line liquid crystal display (LCD) shows the printer’s
status, menu items and error messages.
For example, a star (*) is displayed when the printheads are capped.
Ready This indicator is on when the printer is on-line and is off when
the printer is off-line. The Ready indicator is turned off when Start/
Stop is pressed, when there is a check condition such as out-of-
paper, or when Menu has been pressed to display the menu.
Buffer This indicator blinks when data is being received by the
printer. When the buffer indicator is on solid, it indicates the buffer is
full or a partial page is stored. Press Print Buffer to print the stored
page.
Check The Check indicator lights up when the printer requires oper-
ator intervention, such as ink or paper problems. An error message
will also be displayed, indicating the type of problem.

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Buttons
Five buttons on the operator panel control the printer. There are two
operations for each button, depending on the state of the printer and
whether Alt is pressed.
1. Menu and Menu -
Press Menu to display the menu system, whether the printer is
Ready or Not-Ready. If a job is active, the Ready indicator is turned
off, and the menu is displayed after the current job has completed
printing. If the menu is already active, pressing Menu displays the
next menu item on the top line of the display.
Menu - is accessed by pressing Alt + Menu, and moves to the previ-
ous menu item.
2. List+ and List -
When the menu is active, these buttons display the list of items on
the second line of the display. Press Alt + List+ (List - to move to
the previous list item.
3. Select And Return
Select only operates when the menu is active.
If the top line of the menu is active, pressing Select causes the lower
line to become active. If the lower line of the menu is active, pressing
Select selects the current value being displayed. If the current value
is a function, such as printing a test, it is executed. If the current
value is a setting, such as High Speed, it becomes the permanent
default.
Return is activated by pressing Alt + Select and it only operates
when the menu is active. If the lower line of the display is active,
pressing Alt causes the upper line of the display to become active. If
the upper line of the display is active, pressing Alt exits the menu
system in the Not-Ready state.
4. Start/Stop and Reset
If the Ready light is on, pressing Start/Stop turns off the Ready light
and the printer stops processing information. The current job will be
interrupted.

General Information 1-6
4079-00X
If the Ready light is off, pressing Start/Stop turns on the Ready light
and the printer is ready to receive information.
When Alt + Reset is pressed, the printer returns to its power-on sta-
tus.
5. Print Buffer and Alt
Print Buffer prints the contents of the print buffer, if any. When the
Buffer indicator is on solid, the buffer contains a partial page of infor-
mation.
Alt is used to access the secondary function on the other buttons by
pressing and holding Alt while pressing another button.
Printhead Capping
The printheads are capped automatically after they have been in the
home position for a few seconds. When the printheads are capped,
a star (*) appears in the display. Do not turn the printer off without
the heads being capped. If the heads are left uncapped, the ink dries
out and print quality is affected.
Adjusting The Printhead Position Lever
The printhead position lever is the green lever attached to the car-
riage.
For optimum print quality, make sure this lever is adjusted according
to the density of the ink in the document and the thickness of the
paper being used. Setting the lever at position 1 sets the distance
between the printhead and the paper at the minimum distance.
Follow these recommendations:
Position 1: Use for normal documents with normal ink density on
the paper.
Position 2: Use for documents with densely inked graphics.
Position 3: Use for envelopes or thick paper, or for documents with
very densely inked graphics.

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If the head is positioned too close to thick paper, envelopes, or
densely inked graphics, the ink could be smeared. In general, keep
the head position as close as possible to the paper.
Also, be sure that quality coated paper is being used for best print
quality.
Abbreviations
ASIC Application-Specific Integrated Circuit
CSU Customer Setup
DRAM Dynamic Random Access Memory
EEPROM Electrically Erasable Programmable Read-
Only Memory
EP Electrophotographic Process
ESD Electrostatic Discharge
FRU Field Replaceable Unit
HVPS High Voltage Power Supply
LAN Local Area Network
LASER Light Amplification by Stimulated Emission
of Radiation
LCD Liquid Crystal Display
LED Light-Emitting Diode
LVPS Low Voltage Power Supply
NVRAM Nonvolatile Random Access Memory
OEM Original Equipment Manufacturer
PICS Problem Isolation Charts
PIXEL Picture Element
POR Power-On Reset
POST Power-On Self Test
PQET Print Quality Enhancement Technology
RIP Raster Image Processor
ROS Read-Only Storage
SRAM Static Random Access Memory
UPR Used Parts Replacement
VAC Volts alternating current
VDC Volts direct current

Diagnostic Information 2-1
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2. Diagnostic Information
Start
When the covers are removed, you will get a Cover Open error code.
To prevent this, tape the cover open interlock arm in the closed posi-
tion on the operator panel.
All voltages in the service checks are positive unless otherwise
noted. When measuring voltages, always use frame ground unless
otherwise specified.
Visually check the machine for obvious problems such as ink leak-
age, and worn or missing parts. Also reseat all cables, and check for
good connections.
Note the error code number, if one is displayed in the operator panel,
and the number of beeps sounded. If you have an error code, go to
the “Error Code Table” on page 2-2 and follow the instructions for
that error code.
If no error code is present, check the NVRAM for the Last Error
code. (See the procedure in “Controller Diagnostics” on page 3-9).
If no error code number is displayed, or you cannot access Control-
ler Diagnostics to check the last error code, or you have no clear
symptom, continue with this Start procedure.
If you proceed through Start, the Error Code Table, and the Operator
Codes and Symptom Table without determining an error code or
symptom, go to “Undetermined Problem Service Check” on page
2-47 and then return here to Start.
When a service check instructs you to end the call, you should run
“Test Print A” on page 3-3.
Check the following:
1. Turn the printer off. Make sure the carriage lock is disengaged,
then turn the printer on. If there is no indication of power in the
printer, go to the “Power Supply Service Check” on page 2-39.

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2. If the printer has power but does not complete POST, with
Ready on the display, go to the “Operator Panel Service Check”
on page 2-31.
3. Run Test Print A. To enter Controller Diagnostics, press and
hold Menu and Print Buffer while turning on the printer. After the
POST is complete, the first item in the Controller Diagnostics
menu is displayed. Use coated paper if available. If you use reg-
ular paper, allow for some color convergence. If an error code or
detectable symptom occurs, go to the “Error Code Table”. If you
have a symptom only, go to the “Operator Codes And Symptom
Table” on page 2-8.
4. Turn the printer off and connect it to a host computer. Turn the
printer on and send data from the computer to the printer. You
can use the test print for this. If the data does not print as it was
sent, go to the “Host Print Service Check” on page 2-22.
Error Code Table
To use this error code table:
1. Turn off the printer, wait four or more seconds, then turn on the
printer.
2. Note any error code number that appears in the display, look for
that code in the tables below, and take the indicated action.
•If two error codes are listed in the table: the top number is dis-
played if the controller board is installed; the bottom number is
displayed if the controller board is removed.
•Some error codes are operator-correctable. See “Operator
Codes And Symptom Table” on page 2-8.
•Other codes indicate the printer is performing an operation; no
action is needed. For example, “04 Reset”, or “05 Self Test”
means the printer is running POST.
3. If no error code is displayed, count the number of beeps and
look for that number in the tables.
4. If no error code is displayed, and no beeps are heard, look for
the symptom in the table and take the indicated action.
5. If you are unable to correct the problem using this index, go to
the “Undetermined Problem Service Check” on page 2-47.
Note: If POST fails and a message is displayed, disregard the mes-
sage and count the number of beeps.