Lexmark Optra Color 1200 User manual

5050-001
Optra Color 1200
TM
Lexmark and Lexmark with diamond
design are trademarks of Lexmark
International, Inc., registered in the
United States and/or other countries.
• Table of Contents
•Index
• Safety and Notices
• Trademarks
• Start Diagnostics
• Manuals Menu

First Edition (May, 1998)
The following paragraph does not apply to 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. Improvements or changes in the products or the programs described may be
made at any time.
Comments may be addressed to Lexmark International, Inc., Department D22/035-3,
740New Circle Road N.W., 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. You can purchase additional copies of publications related
to this product by calling 1-800-553-9727. In other countries, contact your point of
purchase.
Lexmark, FontVision, MarkVision, and Optra are trademarks of Lexmark International,
Inc., registered in the United States and/or other countries.
Other trademarks are the property of their respective owners.
© Copyright Lexmark International, Inc. 1998.
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.
5050-001

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5050-001
Table of Contents
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Maintenance Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Standard Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
Printer Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Cross Section of Printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
Operational Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Electrophotographic Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8
Photoconductor Drum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Electrical Charge Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Exposure Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Developer Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
Transfer Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Cleaning Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
Paper Feed, Transfer, and Fusing. . . . . . . . . . . . . . . . . . . . . . . 1-14
Print Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
Clearing Paper Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-27
Printing From the Multipurpose Feeder . . . . . . . . . . . . . . . . . . . 1-28
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Part Numbers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Adjustments and Procedures Following Parts Replacement. . . . 2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Initial Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Printer Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Service Error Message Table. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Status Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Attendance Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
Symptom Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-23
Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Fuser Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-27
Color Print Unit Missing Service Check . . . . . . . . . . . . . . . . . . . 2-28
Drive 1 DC Motor Service Check. . . . . . . . . . . . . . . . . . . . . . . . 2-28
Drive 2 Stepper Motor Service Check . . . . . . . . . . . . . . . . . . . . 2-29

iv Service Manual
5050-001
Transport Belt/BUD Service Check. . . . . . . . . . . . . . . . . . . . . . .2-29
Optional Paper Feed Service Check. . . . . . . . . . . . . . . . . . . . . .2-30
Paper Jam Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-30
Paper Carrying Service Check . . . . . . . . . . . . . . . . . . . . . . . . . .2-32
Paper Exit FU/FD Service Check . . . . . . . . . . . . . . . . . . . . . . . .2-34
Paper Low/Empty Tray 1, 2, 3 Service Check. . . . . . . . . . . . . . .2-35
Paper Tray Missing/Size Service Check . . . . . . . . . . . . . . . . . . .2-35
Remove Paper Sensor Service Check . . . . . . . . . . . . . . . . . . . .2-36
Power Supply Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . .2-36
Marks on Paper Service Check. . . . . . . . . . . . . . . . . . . . . . . . . .2-37
Image Quality Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-38
Print Quality Problems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-38
Sensor Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-45
Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Power-On Self Test Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Using the Operator Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Operator Panel Buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Printing the Menu Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
Operator Menu Disabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Menu Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4
Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Diagnostic Menu Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Setting Printer top Margin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
Color Calibration of Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
Print Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15
Input/Output Source Print Tests . . . . . . . . . . . . . . . . . . . . . . . . .3-15
Print Quality Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16
LCD Hardware Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16
Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17
DRAM Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17
Std Parallel Wrap Test and Parallel X Wrap Test . . . . . . . . . . . .3-18
Serial Wrap Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19
Quick Disk Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-20
Disk Test/Clean. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21
Setting the Page Count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-23
Viewing the Permanent Page Count. . . . . . . . . . . . . . . . . . . . . .3-23
Viewing and Resetting the Drum Counters . . . . . . . . . . . . . . . . .3-23
Calibrating the Transparency Sensor . . . . . . . . . . . . . . . . . . . . .3-24
Viewing the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-25
Clearing the Error Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26
US / Non-US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26
Exiting Diagnostics Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-27

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5050-001
Test Print 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Test Print 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Precautions for Disassembly and Cleaning . . . . . . . . . . . . . . . . . 4-1
Handling the Printed Circuit Boards with MOS ICs . . . . . . . . . . . 4-1
Precautions for Handling the Drum Cartridge . . . . . . . . . . . . . . . 4-2
Parts not to be touched . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Transfer Belt Tracking Adjustment. . . . . . . . . . . . . . . . . . . . . . . . 4-3
Thermistor Rank Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
LED Head Light Quantity Adjustment . . . . . . . . . . . . . . . . . . . . . 4-5
Top Margin for Color Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Top Margin for Black and White Mode. . . . . . . . . . . . . . . . . . . . . 4-6
Overhead Projection Sheet Detection Sensor Adjustment . . . . . 4-6
Printhead Adjustments (X, Y, and Theta). . . . . . . . . . . . . . . . . . . 4-6
Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
LED Head Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
Transfer Belt Unit Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
Paper Remaining Sensor Removal . . . . . . . . . . . . . . . . . . . . . . 4-12
Belt Unit Drive Frame, BUD Motor, BUD Sensor Removal . . . . 4-12
Engine Board (PG14 ENG BB) Removal. . . . . . . . . . . . . . . . . . 4-14
Cover Removals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15
Head Controller Board (P614 HDCONT) Removal . . . . . . . . . . 4-21
Operator Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
MPF Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Paper Feed Roller Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-24
MPF Roller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
F Pad Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Registration Sensor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
MPF Paper Empty Sensor Removal . . . . . . . . . . . . . . . . . . . . . 4-27
Humidity Sensor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Printer Controller (614 PRCONT) Removal. . . . . . . . . . . . . . . . 4-28
HVU1(U) Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-29
Drive 2 (U) and Face Up/Face Down (FUD) Solenoid Removal 4-29
Fuser Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Fuser Thermostat, Fuse, and Thermistor Removals . . . . . . . . . 4-34
Fuser Press Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Fuser Pawl Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-39
Fuser Heater Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-42
Fuser Heat Roller and Gear H, Gear 30 Removal. . . . . . . . . . . 4-44
Heater Drive Board, 230 V Only. . . . . . . . . . . . . . . . . . . . . . . . . 4-45
HVU 2 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-46

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5050-001
Power Supply Switch Removal . . . . . . . . . . . . . . . . . . . . . . . . . .4-46
Power Supply Board (P614-MPS) Removal . . . . . . . . . . . . . . . .4-47
Size Sensor Board (P611-PSZ) Removal . . . . . . . . . . . . . . . . . .4-47
Toner Remaining Sensor, Drum Gear Sensor Removal. . . . . . .4-48
Drive 1 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-50
Drum Drive Gear Sensor (P614-DGS) Removal. . . . . . . . . . . . .4-51
Registration Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-52
OHP Sensor Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-57
Paper Exit Sensor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-59
Output Bin Full Sensor Removal. . . . . . . . . . . . . . . . . . . . . . . . .4-59
RIP Controller Card Removal . . . . . . . . . . . . . . . . . . . . . . . . . . .4-61
Paper Face Up/Face Down (FUD) Delivery Sensor Removal. . .4-61
Optional Paper Feeder Removal Procedures . . . . . . . . . . . . . . . . .4-62
Outer Cover Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-62
Size Sensor Board (P611-PSZ) Removal . . . . . . . . . . . . . . . . . .4-63
Drive Board (P614-2/3 DRIV) Removal. . . . . . . . . . . . . . . . . . . .4-64
Paper Feed Motor 2 (PM42) Removal . . . . . . . . . . . . . . . . . . . .4-64
Paper Feed Roller Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-65
Paper Remaining Sensor Removal. . . . . . . . . . . . . . . . . . . . . . .4-66
Paper Feed Clutch, Solenoid, and Transfer Roller Removal . . .4-67
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Paper Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Cross Section of Printer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-2
Electronic Board Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Electrical Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-5
Sensors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
Power Supply Board (614-MPS-E) . . . . . . . . . . . . . . . . . . . . . . . .5-7
High Voltage Unit 1 Board (614-HVU1). . . . . . . . . . . . . . . . . . . . .5-8
High Voltage Unit 2 Board (P614-HVU2) . . . . . . . . . . . . . . . . . . .5-9
Optional Paper Feed Controller Board (P614-2/3 DRIV) . . . . . .5-10
Printhead Controller Board (P614-HD CONT) . . . . . . . . . . . . . .5-11
Printer Controller Board (P614-PRCONT) . . . . . . . . . . . . . . . . .5-12
Size Sensor Board (P611-PSZ) . . . . . . . . . . . . . . . . . . . . . . . . .5-13
RIP Controller Card. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-14
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Maintenance Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1
Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Lubricants and Cleaners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
How to Use This Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-1
Assembly 1: Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-2

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5050-001
Assembly 2: Paper Exit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Assembly 3: Upper Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Assembly 4: Base 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Assembly 5: Base 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
Assembly 6: Feeder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Assembly 7: Electrical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Assembly 8: I/F Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
Assembly 9: Fuser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
Assembly 10: Cassette . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32
Assembly 11: Optional Feeder Base. . . . . . . . . . . . . . . . . . . . . . . . 7-34
Assembly 12: Optional Feeder Paper Feed . . . . . . . . . . . . . . . . . . 7-38
Assembly 13: Optional Features. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-40
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Safety Information ix
5050-001
Safety Information
Safety Notice
•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.

xService Manual
5050-001
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.
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

Safety Information xi
5050-001
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.
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

xii Service Manual
5050-001
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.

General Information 1-1
5050-001
1. General Information
Maintenance Approach
The diagnostic information in this manual leads you to the correct
field replaceable unit (FRU) or part. Use the error code charts,
symptom index, and service checks to determine the symptom and
repair the failure. You may find that the removals in the Repair
Information chapter will help you identify parts.
After you complete the repair, perform tests as needed to verify the
repair.
Tools
The removal and adjustment procedures described in this manual
require the following tools and equipment:
•Magnetic tip Phillips screwdrivers, large and small
•Flat-blade screwdrivers
•Analog volt ohmmeter (a digital volt ohmmeter may also be
used)
•Needle nose pliers
•Tweezers, C-ring pliers
•Magnifier (10 times or equivalent)
•6-angle wrench (1.5 mm).
When you make voltage readings, always use frame ground unless
another ground is specified.

1-2 Service Manual
5050-001
Serial Number
Lower the multipurpose feeder and refer to the label on the right.
The serial number is also listed on the menu settings page you can
print from the Tests Menu.

General Information 1-3
5050-001
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

1-4 Service Manual
5050-001
Standard Features
Feature Descri
p
tion
Print method Dry electrophotographic process using LED printheads
Print
addressability 600 dpi
Maximum print
speed • 12 ppm (letter and A4 paper) (Color) • 24 ppm (Mono)
Fonts 1. 75 resident scalable fonts:
• PostScript Level 2 emulation: 39 Optra compatible plus
36 additional
• PCL emulation: 45 LaserJet compatible plus
30 additional
2. PCL bitmap fonts:
• LinePrinter
• POSTNET Barcode
• FontVisionTM font manager utility with 110 fonts
• World class international font support:
• 77 symbol sets, including support for
• Canadian, French, Brazilian,
• Portuguese, Cyrillic, and Greek
Paper input • 250-sheet tray
• Multipurpose feeder
Paper output • Top output bin: 250 sheets (collated)
• Rear output bin: 100 sheets (uncollated)
Paper sizes
supported A4, A5, JIS B4, JIS B5, A3, letter, legal, 11 x 17
Printer memory 32MB (two 16MB 50 ms EDO SIMMS)
Some printer models may ship with more memory.
Flash memory 4MB (for permanent storage of fonts, logos, and forms)
Interface Parallel (standard Centronics protocol that complies with
bidirectional IEEE 1284B)
Internal
solutions ports • 2 ports for network adapters, tri-port adapters, or parallel port adapters
• 1 connector for hard disk
• 2 pairs of memory connectors
Printer software MarkVisionTM utility that lets you manage your printer
from your computer. Supported in the following
environments: Windows 95, Windows NT 4.0,
Windows 3.1x, OS/2 Warp, Macintosh, UNIX.

General Information 1-5
5050-001
Options
O
p
tion Descri
p
tion
Optional drawer Support unit and 250-sheet tray; up to two drawers may
be installed underneath the printer
250-sheet tray Replacement tray
Memory • 32MB option (two 16MB memory cards)
• 64MB option (two 32MB memory cards)
• Maximum installed memory: 128MB
Hard disk option 2.5-inch hard disk to store fonts, forms, job statistics, and
spooled jobs
Hard disk
adapter ribbon
cable
For installing compatible Lexmark or third-party hard
disks
MarkNet S
internal network
adapters
Adapters available to support the following topologies:
• Ethernet 10BaseT and 10Base2
• Ethernet 10/100BaseTX
• Token-Ring (connects the printer to a Token-Ring
network via DB9 or RJ45)
Tri-port adapter Provides support for the following interfaces:
• Serial RS-232C/RS-422A (which can also be
configured to support a class 1 fax modem)
• High speed Infrared local connections
• LocalTalk network connection
Parallel port
adapter Provides additional parallel port
Infrared adapter For use with the tri-port adapter; receives infrared beam
from an IrDA-compatible workstation
Serial interface
adapter Converts the printer’s parallel port to a serial port
Parallel cables High speed bidirectional 10-foot and 20-foot 1284-B
parallel cables; 9.8-foot 1284 A-C parallel cable
Serial cable 50-foot serial cable

1-6 Service Manual
5050-001
Printer Supplies
Cross Section of Printer
Su
pp
l
y
Descri
p
tion A
pp
roximate
y
ield
Toner cartridges Black, magenta, cyan, or yellow
cartridges 6,500 pages each (5% coverage)
Photoconductors • Black photoconductor (with fuser
coating roll)
• Cyan, magenta, and yellow
photoconductors (packaged
together)
13,000 pages each
Transparencies A4 and letter size
1 Fuser Roller 18 Absorption Roller
2 Press Roller 19 Registration Upper Roller (Metal)
3 Heater 20 Registration Roller (Rubber)
4 Fuser Oil Roller 21 Registration Sensor
5 Paper Exit Sensor Lever 22 Registration Sensor Lever
6 Belt Drive Roller 23 MPF Roller
7 Belt Thermistor 24 Feeder Friction Stop Pad
8 Transfer Belt 25 MPF Assembly
9 Transfer Sheet 26 Paper Carrying Roller
10 Cleaning Blade 27 Paper Noise-Cut Roller
11 Charging Roller 28 Pick-up Paper Feed Roller
12 Photoconductor Drum 29 Paper Remaining Detection
Lever
13 LED Printhead 30 Paper Remaining Detection
Sensors
14 Development Roller 31 Transport Belt Blade
15 Developer Supply Roller 32 Transport Belt Waste Bottle
16 Developer Doctor Blade 33 Belt Unit Drive Motor
17 Developer Agitator 34 Interface RIP Controller Card

General Information 1-7
5050-001

1-8 Service Manual
5050-001
Operational Theory
This printer makes a color image by overlapping each color toner in
dot units and fusing them to the paper. The process is divided into
two steps. The first step is the electrophotographic process which
forms the image on the PC. The second step consists of Feeding,
Transferring, Fusing which feeds the paper, transfers the image to
the paper and fuses the toner.
Electrophotographic Process
As the photoconductor drum rotates it is electrically charged, the
image is exposed to the PC drum, the image is developed with toner,
the image is transferred to the paper, and the PC drum is cleaned.

General Information 1-9
5050-001