Lexmark T622n, T622, T620n, T620 Service Manual
Lexmark™ T62X
4069-5xx/7xx
• Table of Contents
• Start Diagnostics
• Safety and Notices
• Trademarks
•Index
• Manuals Menu
Lexmark and Lexmark with diamond
design are trademarks of Lexmark
International, Inc., registered in the
United States and/or other countries.
4069-5XX/7XX
Edition: May 2001
The following paragraph does not apply to any country where such provisions are
inconsiste nt with local law: LEXMARK INTERNATIONAL, INC. PROV IDES THIS
PUBLICATION “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRE SS 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 D22A/032-2,
740 West New Circle Road, Lexington, Kentucky 40550, U.S.A or e-mail at
ServiceInfoAndTraining@Lexmark.com. 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.
ImageQuick, Optra Forms, PictureGrade and StapleSmart are trademarks of Lexmark
International, Inc.
Lexmark and Lexmark with diamond design, Prebate and MarkNet are trademarks of
Lexmark International, Inc., registered in the United States and/or other countries.
PostScript is a registered trademark of Adobe Systems Incorporated.
PCL is a registered trademark of the Hewlett-Packard Company.
Other trademarks are the property of their respective owners.
© Copyright Lexmark International, Inc. 2001.
All rights reserved.
UNITED STA TES 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
DF ARS 252.227-7013 and in applicable FAR provisions: Lexmark International, Inc.,
Lexington, KY 40550.
P/N: 12G3959
4069-5XX/7XX
Table of Content
Laser Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xix
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxiv
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
Maintenance Approach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Tools Required for Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Diagnostic Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Service Error Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
User Status Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
User Attendance Messages. . . . . . . . . . . . . . . . . . . . . . . 2-29
Power-On Self Test (POST) . . . . . . . . . . . . . . . . . . . . . . 2-41
Symptom Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-42
Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-46
Charge Roll Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-47
Cover Open Switch/Cab le Serv ic e Chec k . . . . . . . . . . . . 2-49
Dead Machine Service Check . . . . . . . . . . . . . . . . . . . . . 2-50
Duplex Option Service Check . . . . . . . . . . . . . . . . . . . . . 2-53
Envelope Feeder Option Servic e Check . . . . . . . . . . . . . 2-56
Fan Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-63
Cold Fuser Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-65
Hot Fuser Service Check. . . . . . . . . . . . . . . . . . . . . . . . . 2-67
Fuser Solenoid Service Check. . . . . . . . . . . . . . . . . . . . . 2-68
Input Sensor Service Check . . . . . . . . . . . . . . . . . . . . . . 2-68
Input Tray(s) Option Service Check. . . . . . . . . . . . . . . . . 2-69
High-Capacity Feeder Input Tray Service Check. . . . . . . 2-72
Main Drive Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-85
Operator Panel Service Check . . . . . . . . . . . . . . . . . . . . 2-86
Options Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . 2-88
Output Bin Sensor Standard Tray Service Check . . . . . . 2-90
Output Expander Service Check . . . . . . . . . . . . . . . . . . . 2-91
High-Capacity Output Stacker Service Check. . . . . . . . . 2-96
5-Bin Mailbox Service Check. . . . . . . . . . . . . . . . . . . . . . 2-99
Paper Feed Service Check . . . . . . . . . . . . . . . . . . . . . . 2-105
Parallel Port Service Check. . . . . . . . . . . . . . . . . . . . . . 2-107
Printhead Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-108
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Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . .2-109
Smart Cartridge Contact Assembly Service Check. . . . .2-121
Serial Port Service Check. . . . . . . . . . . . . . . . . . . . . . . .2-122
Toner Sensor Service Check . . . . . . . . . . . . . . . . . . . . .2-122
Transfer Roll Service Check . . . . . . . . . . . . . . . . . . . . . .2-123
StapleSmart Finisher Service Check . . . . . . . . . . . . . . .2-125
Diagnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
Diagnostic/Configurati on Men u . . . . . . . . . . . . . . . . . . . . . .3-1
Configuration Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Diagnostic Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Exiting the Diagnostics Mode . . . . . . . . . . . . . . . . . . . . . . .3-6
Device Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Quick Disk Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Disk Test/Clean. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-6
Flash Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
Disabling Download Emulations . . . . . . . . . . . . . . . . . . . . .3-8
Duplex Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Duplex Quick Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
Duplex Sensor Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Duplex Motor Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-9
Duplex Feed 1 Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
Duplex Feed 2 Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
Viewing the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
Clearing the Error Log. . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
Hardware Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14
LCD Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14
Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14
SDRAM Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15
ROM Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-15
Parallel Wrap Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-16
Serial Wrap Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-17
Input Tray Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19
Input Tray Feed Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19
Input Tray Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . .3-19
Output Bin - Feed to all Bins Test . . . . . . . . . . . . . . . . . . . . . .3-20
Output Bin Feed Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21
Output Bin Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-21
Finisher Tests, StapleSmart Finisher Option . . . . . . . . . . . . . .3-24
Base Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-26
StapleSmart Finisher Tests. . . . . . . . . . . . . . . . . . . . . . . .3-26
StapleSmart Finisher Sensor Test . . . . . . . . . . . . . . . . . .3-27
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5-Bin Mailbox Diverter Test . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
Printer Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Setting the Page Count . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30
Viewing the Permanent Page Count . . . . . . . . . . . . . . . . 3-30
Maintenance Page Count . . . . . . . . . . . . . . . . . . . . . . . . 3-31
Setting Configuration ID. . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
Restore EP Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . 3-32
Print Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-33
Print Quality Test Pages . . . . . . . . . . . . . . . . . . . . . . . . . 3-34
Printing Menu Settings Page . . . . . . . . . . . . . . . . . . . . . . 3-36
Auto Compensator Operation . . . . . . . . . . . . . . . . . . . . . . . . . 3-36
Autoconnect System, Paper Tray Options, Envelope Feeder and
Output Expander Operations . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-37
Fuser Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39
Hot Roll Fuser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39
Paper Feed Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-40
Paper Jams - Base Printer. . . . . . . . . . . . . . . . . . . . . . . . 3-40
Paper Jams - Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-41
Repair Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Handling ESD-Sensitive Parts . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Adjustment Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Duplex Motor Drive Belts . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2
Fuser Solenoid Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Gap Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
Printhead Assembly Adjustment . . . . . . . . . . . . . . . . . . . . 4-4
Paper Alignment Assembly Adjustment. . . . . . . . . . . . . . . 4-5
Screw Identification Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
Removal Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Center Pan Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16
System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Card Assembly (NAND Flash). . . . . . . . . . . . . . . . . . . . . 4-18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Developer Drive Assembly. . . . . . . . . . . . . . . . . . . . . . . . 4-20
Duplex Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Duplex Front Cover Assembly. . . . . . . . . . . . . . . . . . . . . 4-21
Duplex Front Cover Door. . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Duplex Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
EMC Shields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
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4069-5XX/7XX
Frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-26
Fuser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-30
Fuser Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31
Fuser Detack Fingers . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-31
Fuser Detack Housing Assembly . . . . . . . . . . . . . . . . . . .4-32
Fuser Transfer Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-33
Fuser Envelope Conditi one r Solen o id. . . . . . . . . . . . . . . .4-34
Fuser Narrow Media Sensor/Flag Assembly. . . . . . . . . . .4-35
Fuser Exit Sensor Flag Assembly. . . . . . . . . . . . . . . . . . .4-35
Fuser Lamp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-35
Fuser Lower Exit Guide Assembly . . . . . . . . . . . . . . . . . .4-36
High Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . .4-37
Integrated Tray Compensator Assembly. . . . . . . . . . . . . .4-37
Integrated Tray Compensator Pick Roll Assembly . . . . . .4-38
Interconnect Board Assem bly . . . . . . . . . . . . . . . . . . . . . .4-40
Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . .4-42
Main Drive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-43
Main Drive Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-45
Multipurpose Tray/Lower Deflector Assembly. . . . . . . . . .4-46
Operator Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . .4-48
Operator Panel Cable/Cover Open Switch Assembly. . . .4-49
Optional 250/500 Paper Tray Assembly . . . . . . . . . . . . . .4-50
Paper Alignment Assembly. . . . . . . . . . . . . . . . . . . . . . . .4-51
Paper Deflectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-53
Paper Input Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-54
Paper Size Sensing Board . . . . . . . . . . . . . . . . . . . . . . . .4-54
Pick Roll . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-54
Printhead (4069-520/52n) . . . . . . . . . . . . . . . . . . . . . . . . .4-55
Printhead (4069-722/72n) . . . . . . . . . . . . . . . . . . . . . . . . .4-56
Redrive Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-57
Smart Cartridge Contact Assembly. . . . . . . . . . . . . . . . . .4-58
Toner Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-59
Transfer Roll Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . .4-60
Upper Paper Deflector Assembly . . . . . . . . . . . . . . . . . . .4-60
Upper Front Cover Hinge Assembly . . . . . . . . . . . . . . . . .4-61
Upper Front Cover Interlock Switch Assembly . . . . . . . . .4-62
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1
Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . . .5-1
High Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . .5-3
Interconnect Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-4
Envelope Option Board . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
Duplex Option Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9
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Autoconnect - Top . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11
Output Expander Control Board. . . . . . . . . . . . . . . . . . . . 5-12
High-Capacity Output Stacker Board. . . . . . . . . . . . . . . . 5-14
System Board Connector Locations . . . . . . . . . . . . . . . . 5-16
System Board Connector Locations . . . . . . . . . . . . . . . . 5-20
StapleSmart Finisher Option - Staple Card Assembly. . . 5-27
Cables - Base Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Fuser Cable, DC Internal . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Autoconnect Cable, (Fuser to LVPS). . . . . . . . . . . . . . . . 5-31
Deflector Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Fuser Cable, AC EP Autoconnect to Fuser Top Cover . . 5-32
Integrated Tray Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32
HSYNC Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32
Mirror Motor Cable. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Main Drive Motor Cable . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Laser Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-33
Front Harness Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
Fuser Cable, DC EP Autoconnect to System Board . . . . 5-34
Autoconnect Cable - System Board to
Top/Interconnect Board . . . . . . . . . . . . . . . . . . . . . . . . . . 5-34
Autoconnect Cable - System Board to
Front/Bottom/Interconnect Board. . . . . . . . . . . . . . . . . . . 5-35
Preventive Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Safety Inspection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Lubrication Specifi cations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2
Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
How to Use this Parts Catalog . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Assembly 1: Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Assembly 2: Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Assembly 3: Printhead. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Assembly 4: Paper Feed (Auto compensator). . . . . . . . . 7-12
Assembly 5: Paper Feed - Multipurpose Unit . . . . . . . . . 7-14
Assembly 6: Paper Feed - Alignment . . . . . . . . . . . . . . . 7-16
Assembly 7: Paper Feed - Output . . . . . . . . . . . . . . . . . . 7-18
Assembly 8: Integrated Paper Tray - 500 Sheet . . . . . . . 7-20
Assembly 9: Main Drive . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Assembly 10: Developer Drive. . . . . . . . . . . . . . . . . . . . . 7-24
Assembly 11: Hot Roll Fuser . . . . . . . . . . . . . . . . . . . . . . 7-26
Assembly 12: Transfer. . . . . . . . . . . . . . . . . . . . . . . . . . . 7-30
Assembly 13: Charging . . . . . . . . . . . . . . . . . . . . . . . . . . 7-32
Assembly 14: Electronics . . . . . . . . . . . . . . . . . . . . . . . . 7-34
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Assembly 14: Electronics (continued). . . . . . . . . . . . . . . .7-36
Assembly 14: Electronics (continued). . . . . . . . . . . . . . . .7-48
Assembly 15: 250-Sheet Tray. . . . . . . . . . . . . . . . . . . . . .7-50
Assembly 16: 500-Sheet Tray. . . . . . . . . . . . . . . . . . . . . .7-56
Assembly 17: Duplex . . . . . . . . . . . . . . . . . . . . . . . . . . . .7-60
Assembly 18: Output Expander . . . . . . . . . . . . . . . . . . . .7-66
Assembly 19: Envelope Feeder . . . . . . . . . . . . . . . . . . . .7-70
Assembly 20: High-Capacity Feeder. . . . . . . . . . . . . . . . .7-74
Assembly 21: Kiosk - Vertical Paper Adapter . . . . . . . . . .7-88
Assembly 22: Kiosk - Horizontal Paper Adapter . . . . . . . .7-90
Assembly 23: High-Capacity Output Stacker . . . . . . . . . .7-92
Assembly 24: 5-Bin Mailbox . . . . . . . . . . . . . . . . . . . . . . .7-98
Assembly 25: StapleSmar t Finisher . . . . . . . . . . . . . . . .7-102
Assembly 26: Options . . . . . . . . . . . . . . . . . . . . . . . . . .7-110
Assembly 27: Miscellaneous . . . . . . . . . . . . . . . . . . . . .7-112
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-1
viii Service Manual
4069-5XX/7XX
Laser Notices
The following laser notice labels may be affixed to this printer as
shown:
Laser Advisory Label
Laser Notices ix
4069-5XX/7XX
Class 1 Laser Statement Label
x Service Manual
4069-5XX/7XX
Laser Notice
The printer is certified in the U.S. to conform to the requirements of
DHHS 21 CFR Subchapter J for Class I (1) laser products, and
elsewhere is certified as a Class I laser product conforming to the
requirements of IEC 60825.
Class I laser products are not considered to be hazardous. The
printer contains internally a Class IIIb (3b) laser that is nominally a 5
milliwatt gallium arsenide laser operating in the wavelength region of
770-795 nanometers. The laser system and printer are designed so
there is never any human access to laser radiation above a Class I
level during normal operation, user maintenance, or prescribed
service condition.
Laser
Der Drucker erfüllt gemäß amtlicher Bestätigung der USA die
Anforderungen der Bestimmung DHHS (Department of Health and
Human Services) 21 CFR Teil J für Laserprodukte der Klasse I (1).
In anderen Ländern gilt der Drucker als Laserprodukt der Klasse I,
der die Anforderungen der IEC (International Electrotechnical
Commission) 60825 gemäß amtlicher Bestätigung erfüllt.
Laserprodukte der Klasse I gelten als unschädlich. Im Inneren des
Druckers befindet sich ein Laser der Klasse IIIb (3b), bei dem es
sich um einen Galliumarsenlaser mit 5 Milliwatt handelt, der Wellen
der Länge 770-795 Nanometer ausstrahlt. Das Lasersystem und der
Drucker sind so konzipiert, daß im Normalbetrieb, bei der Wartung
durch den Benutzer oder bei ordnungsgemäßer Wartung durch den
Kundendienst Laserbestrahlung, die die Klasse I übersteigen würde,
Menschen keinesfalls erreicht.
Laser Notices xi
4069-5XX/7XX
Avis relatif à l’utilisation de laser
Pour les Etats-Unis : cette imprimante est certifiée conforme au x
provisions DHHS 21 CFR alinéa J concernant les produits laser de
Classe I (1). Pour les autres pays : cette imprimante répond aux
normes IEC 60825 relatives aux produits laser de Classe I.
Les produits laser de Classe I sont considérés comme des produits
non dangereux. Cette imprimante est équipée d’un laser de Classe
IIIb (3b) (arséniure de gallium d’une puissance nominale de 5
milliwatts) émettant sur des longueurs d’onde comprises entre 770
et 795 nanomètres. L’imprimante et son système laser sont conçus
pour impossible, dans des conditions normales d’utilisation,
d’entretien par l’utilisateur ou de révision, l’exposition à des
rayonnements laser supérieurs à des rayonnements de Clas s e I .
Avvertenze sui prodotti laser
Questa stampante è certificata negli Stati Uniti per essere conforme
ai requisiti del DHHS 21 CFR Sottocapitolo J per i prodotti laser di
classe 1 ed è certificata negli altri Paesi come prodotto laser di
classe 1 conforme ai requisiti della norma CEI 60825.
I prodotti laser di classe non sono considerati pericolosi. La
stampante contiene al suo interno un laser di classe IIIb (3b)
all’arseniuro di gallio della potenza di 5mW che opera sulla
lunghezza d’onda compresa tra 770 e 795 nanometri. Il sistema
laser e la stampante sono stati progettati in modo tale che le
persone a contatto con la stampante, durante il normale
funzionamento, le operazioni di servizio o quelle di assistenza
tecnica, non ricevano radiazioni laser superiori al livello della classe
1.
Laser Notices xii
4069-5XX/7XX
Avisos sobre el láser
Se certifica que, en los EE.UU., esta impresora cumple los
requisitos para los productos láser de Clase I (1) establecidos en el
subcapítulo J de la norma CFR 21 del DHHS (Departamento de
Sanidad y Servicios) y, en los demás países, reúne todas las
condiciones expuestas en la norma IEC 60825 para productos láser
de Clase I (1).
Los productos láser de Clase I no se consideran peligrosos. La
impresora contiene en su interior un láser de Clase IIIb (3b) de
arseniuro de galio de funcionamiento nominal a 5 milivatios en una
longitud de onda de 770 a 795 nanómetros. El sistema láser y la
impresora están diseñados de forma que ninguna persona pueda
verse afectada por ningún tipo de radiac ión láser superior al nivel de
la Clase I durante su uso normal, el mantenimiento realizado por el
usuario o cualquier otra situación de servicio técnico.
Declaração sobre Laser
A impressora está certificada nos E.U.A. em conformidade com os
requisitos da regulamen t ação DHHS 21 CFR Subcapítulo J para a
Classe I (1) de produtos laser. Em outros locais, está certificada
como um produto laser da Classe I, em conformidade com os
requisitos da norma IEC 60825.
Os produtos laser da Classe I não são considerados perigosos.
Internamente, a impressora contém um produto laser da Classe IIIb
(3b), designado laser de arseneto de potássio, de 5 milliwatts
,operando numa faixa de comprimento de onda entre 770 e 795
nanómetros. O sistema e a impressora laser foram concebidos de
forma a nunca existir qualquer possiblidade de acesso humano a
radiação laser superior a um nível de Classe I durante a operação
normal, a manutenção feita pelo utilizador ou condições de
assistência prescritas.
Laser Notices xiii
4069-5XX/7XX
Laserinformatie
De printer voldoet aan de eisen die gesteld worden aan een
laserprodukt van klasse I. Voor de Verenigde Staten zijn deze eisen
vastgelegd in DHHS 21 CFR Subchapter J, voor andere landen in
IEC 60825.
Laserprodukten van klasse I worden niet als ongevaarlijk
aangemerkt. De printer is voorzien van een laser van klasse IIIb
(3b), dat wil zeggen een gallium arsenide-laser van 5 milliwatt met
een golflengte van 770-795 nanometer. Het lasergedeelte en de
printer zijn zo ontworpen dat bij normaal gebruik, bij onderhoud of
reparatie conform de voorschriften, nooit blootstelling mogelijk is
aan laserstraling boven een niveau zoals voorgeschreven is voor
klasse 1.
Lasermeddelelse
Printeren er godkendt som et Klasse I-laserprodukt, i
overenstemmelse med kravene i IEC 60825.
Klasse I-laserprodukter betragtes ikke som farlige. Printeren
indeholder internt en Klasse IIIB (3b)-laser, der nominelt er en 5
milliwatt galliumarsenid laser, som arbejder på bølgelængdeområdet
770-795 nanometer. Lasersystemet og printeren er udformet
således, at mennesker aldrig udsættes for en laserstråling over
Klasse I-niveau ved normal drift, brugervedligeholdelse eller
obligatoriske servi c ebet ing el se r.
Laser Notices xiv
4069-5XX/7XX
Huomautus laserlaitteesta
Tämä kirjoitin on Yhdysvalloissa luokan I (1) laserlaitteiden DHHS
21 CFR Subchapter J -määrityksen mukainen ja muualla luokan I
laserlaitteiden IEC 60825 -määrityksen mukainen.
Luokan I laserlaitteiden ei katsota olevan vaarallisia käyttäjälle.
Kirjoittimessa on sisäinen luokan IIIb (3b) 5 milliwatin
galliumarsenidilaser, joka toimii aaltoalueella 770 - 795 nanometriä.
Laserjärjestelmä ja kirjoitin on suunniteltu siten, että käyttäjä ei
altistu luokan I määrityksiä voimakkaammalle säteilylle kirjoittimen
normaalin toiminnan, käyttäjän tekemien huoltotoimien tai muiden
huoltotoimien yhteydessä.
VARO! Avattaessa ja suojalukitus ohitettaessa olet alttiina
näkymättömälle lasersäteilylle. Älä katso säteeseen.
VARNING! Osynlig laserstrålning när denna del är öppnad och
spärren är urkopplad. Betrakta ej strålen.
Laser-notis
Denna skrivare är i USA certifierad att motsvara kraven i DHHS 21
CFR, underparagraf J för laserprodukter av Klass I (1). I andra
länder uppfyller skr ivaren kraven för laserprodukter av Klass I enligt
kraven i IEC 60825.
Laserprodukter i Klass I anses ej hälsovådliga. Skrivaren har en
inbyggd laser av Klass IIIb (3b) som består av en laserenhet av
gallium-arsenid på 5 milliwatt som arbetar i våglängdsområdet 770795 nanometer. Lasersystemet och skrivaren är utformade så att det
aldrig finns risk för att någon person utsätts för lasers tr ålning över
Klass I-nivå vid normal användning, underhåll som utförs av
användaren eller annan föreskriven serviceåtgärd.
Laser Notices xv
4069-5XX/7XX
Laser-melding
Skriveren er godkjent i USA etter kravene i DHHS 21 CFR,
underkapittel J, for klasse I (1) laserprodukter, og er i andre land
godkjent som et Klasse I-laserprodukt i samsvar med kravene i IEC
60825.
Klasse I-laserprodukter er ikke å betrakte som farlige. Skriveren
inneholder internt en klasse IIIb (3b)-laser, som består av en
gallium-arsenlaserenhet som avgir stråling i bølgelengdeområdet
770-795 nanometer. Lasersystemet og skriveren er utformet slik at
personer aldri utsettes for laserstråling ut over klasse I-nivå under
vanlig bruk, vedlikehold som utføres av brukeren, eller foreskrevne
serviceoperasjoner.
Avís sobre el Làser
Segons ha estat certificat als Estats Units, aquesta impressora
compleix els requisits de DHHS 21 CFR, apartat J, pels productes
làser de classe I (1), i segons ha estat certificat en altres llocs, és un
producte làser de classe I que compleix els requisits d’IEC 60825.
Els productes làser de classe I no es consideren perillosos. Aquesta
impressora conté un làser de classe IIIb (3b) d’arseniür de gal.li,
nominalment de 5 mil.liwats, i funciona a la regió de longitud d’ona
de 770-795 nanòmet re s. El siste ma làser i la impressora han sigut
concebuts de manera que mai hi hagi exposició a la radiació làser
per sobre d’un nivell de classe I durant una operació normal, durant
les tasques de manteniment d’usuari ni durant els serveis que
satisfacin les condicions prescrites.
Laser Notices xvi
4069-5XX/7XX
Japanese Laser Notice
Chinese Laser Notice
Laser Notices xvii
4069-5XX/7XX
Korean Laser Notice
xviii Service Manual
4069-5XX/7XX
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
necessar y pr ec autions.
Consignes de Sécurité
• Ce produit a été conçu, testé et approuvé pour respecter les
normes strictes de sécurité globale lors de l'utilisation d e
composants Lexmark sp écifiques. 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.
Safety Information xix
4069-5XX/7XX
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 V orsichtsmaßnahmen
treffen.
xx S ervice Manual
4069-5XX/7XX
Pautas de Seguridad
• 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.
Informações de Segurança
• 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 utiliza ção de outros componentes de
substituição.
• As informações de segurança relativas a este produto
destinam-se a profissio nai s 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.
Safety Information xxi
4069-5XX/7XX
Informació de Seguretat
• 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 serv e i d’aquest producte.
El personal professional ha d’estar-ne assabentat i prendre les
mesures convenients.
xxii Service Manual
4069-5XX/7XX
Safety Information xxiii
4069-5XX/7XX
Preface
This book is designed for service personnel. It is divided into the
following chapters:
1. General Information contains a general description of the
printer and the maintenance approach used to repair it. Special
tools and test equipment are listed in this chapter, as well as
general environmental and safety instructions.
2. Diagnostic Information contains an error indicator table,
symptom tables, and service checks used to isolate failing field
replaceable units (FRUs).
3. Diagnostic Aids contains tests and checks used to locate or
repeat symptoms of printer problems.
4. Repair Information provides instructions for making printer
adjustments and removing and installing FRUs.
5. Connector Locations uses illustrations to identify the
connector locations and test points on the printer.
6. Preventive Maintenance contains the lubrication specifications
and recommendations to prevent problems.
7. Parts Catalog contains illustrations and part numbers for
individual FRUs.
xxiv Service Manual
4069-5XX/7XX
1. General Information
The Lexmark™ T laser printers are letter quality page printers
designed to attach to IBM-compatible PC’s and to most computer
networks.
The Lexmark T laser printer is available in the following models.
Model Name Type
Lexmark T620 4069-520
Lexmark T620n 4069-52n (Network)
Lexmark T622 4069-722
Lexmark T622n 4069-72n (Network)
General Information 1-1
4069-5XX/7XX
Options
The following options are available. Some options are not available
in every country. Contact y our point of purchase for options availabl e
in your country.
Memory options of 4MB, 8MB, 16MB, 32MB, 64MB and 128MB
SDRAM Card Assembly
Flash memory options of 2MB, 4MB, 8MB and 16MB Card Assembly
Integrated network options
Token-Ring
Ethernet
Tri-Port Adapter
IR Adapter
IPDS Card Assembly and SCS/TNe
PRESCRIBE Card Assembly
TIFF Card Assembly
Bar Code Card Assembly
Parallel Interface Card
SCS
USB/Parallel Port
MarkNet™ Print Servers
ImageQuick Card Assembly
250 and 500-sheet paper trays of A5, letter, and legal size
250 Sheet Special Media Tray Assembly
500 Sheet Special Media Tray
2000 Sheet High Capacity Feeder
Envelope Feeder
Duplex Option - 250 Sheet
Duplex Option - 500 Sheet
Hard Disk - 5.0+ GB
Optra Forms™ Hard Disk - 5.0+ GB
Vertical Kiosk Presenter
Horizontal Kiosk Presenter
Output Expander
5-Bin Mailbox
High-Capacity Outpu t Stacker
StapleSmart™ Finisher Option
1-2 Service Manual
4069-5XX/7XX
Maintenance Approach
The diagnostic information in this manual leads you to the correct
field replaceable unit (FRU) or part. Use the service error codes,
user status messages, user error messages, service checks, and
diagnostic aids to determine the printer problem and repair the
failure. After you complete the repair, perform tests as needed to
verify the repair.
Tools Required for Service
Flat-blade screwdriver
#1 Phillips screwdriver
#2 Phillips screwdriver
T10 Torx screwdriver
7.0 mm nut driver
5.5 mm wrench
Needlenose pliers
Diagonal pliers
Spring hook
Feeler gauges
Analog or digital multimeter
Parallel wrap plug 1319128
Serial wrap plug 1329048
Twinax/serial debug cable 1381963
Coax/serial debug cable 1381964
General Information 1-3
4069-5XX/7XX
Acronyms
CSU Customer Setup
DIMM Dual In-Line Memory Module
DRAM Dynamic Random Access Memory
EDO Enhanced Data Out
EP Electrophotographic Process
EPROM Erasable, Programmable Read-Only
Memory
ESD Electrostatic Discharge
FRU Field Replaceable Unit
GB Gigabyte
HVPS High Voltage Power Supply
LASER Light Amplification by Stimulated Emission
of Radiation
LCD Liquid Crystal Display
LED Light-Emitting Diode
LV PS Low Voltage Power Supply
MROM Masked Read Only Memory
NAND
NVRAM Nonvolatile Random Access Memory
OEM Original Equipment Manufacturer
PC Photoconductor
POR Power-On Reset
POST Power-On Self Test
RIP Raster Imaging Processor
ROM Read Only Memory
SDRAM Sync hr on ous Dual Rand om Ac ce ss
Memory
SRAM Static Random Access Memory
UPR Used Parts Return
V ac Volts alternating current
V dc Volts direct current
1-4 Service Manual
4069-5XX/7XX
2. Diagnostic Information
Start
CAUTION: Remove the power cord from the printer or wall outlet
before you connect or disconnect any cable or electronic board or
assembly for personal safety and to prevent damage to the printer.
Use the handholds on the side of the printer. Make sure your fingers
are not under the printer when you lift or set the printer down.
Use the service error code, user status message, user error
message, symptom table, service checks, and diagnostic aids in this
chapter to determine the corrective action necessary to repair a
malfunctioning printer.
Service error codes are indicated by a three-digit error code. If a
service error code is displayed, go to the “Service Error Codes” on
page 2-2.
User status messages provide the user with information on the
current status of the printer. Ready is displayed on the first line of the
display unless Power Saver is invoked, and then Power Saver is
displayed. If a user status message is displayed, go to the “User
Status Screens” on page 2-24.
User error messages are indicated by a two or three-digit error code
that provides the user with information that explains a problem with a
print cartridge, paper jam, option, port, and so on. If a user error
message is displayed, go to the “User Atte nda nce Mess ages” on
page 2-29.
If your machine completes the “Power-On Self Test (POST)” on
page 2-41 without an error, and you have a symptom, go to the
“Symptom Tables” on page 2-42. Locate your symptom and take
the appropriate action.
If a service error code appears while you are working on the
machine, go to the “Service Error Codes” on page 2-2 and take
the indicated action for that error.
Diagnostic Information 2-1
4069-5XX/7XX
Service Error Codes
Service Error Codes are generally non-recoverable except in an
intermittent cond iti on when you can POR the prin ter to temporar i ly
recover from the error condition.
Error Code Action
900 RIP Software Contact the next support level or call Lexmark.
901 Engine Flash Indicates that the flash which the engine code is
programmed into is bad. Replace the system board.
902 General
Engine Software
903 Paperport
Link Driver Error
904 Interface
Violation by the
controller
software
905 Interface
Violation by
Paperport Device
906 ControllerEngine Link
Driver Error
910 DC Pick
Motor DC Pick
Motor Stall
911 DC Pick
Motor Excessive
PWM
912 DC Pick
Motor below
speed
These errors indicate an unrecoverable engine software
error. Replace the system board.
Check for correct location of the jumpers on the
interconnect board for the model/type printer you are
servicing. Incorrect jumper settings can cause a 902
service error. If jumpers are set correctly, replace the
system board.
Error Codes 910,911,912,913 and 914 are indications
that a Tray 1 paper feed problem has been detec ted. Go
to the “Input Tray(s) Option Service Check” on
page 2-69.
913 DC Pick
Motor over speed
2-2 Service Manual
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