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  9. Lexmark T52x 4520 SERIES User manual

Lexmark T52x 4520 SERIES User manual

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Copyright 2025 Manuals.Online. All Rights Reserved.

4520-xxx
Lexmark™ T52x
Lexmark and Lexmark with diamond
design are trademarks of Lexmark
nal, Inc., registered in the
ates and/or other countries.
• Table of Contents
•Index
• Safety and Notices
• Trademarks
•StartDiagnostics
Revised: June 21, 2006
Contents iii
4520-xxx
Contents
Notices and Safety Information. . . . . . . . . . . . . . . . . . . . . 1-ix
Laser Notices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-i
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-xvi
Preface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-xxii
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 Messages . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22
User Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
Power-On Self Test (POST). . . . . . . . . . . . . . . . . . . . . . . 2-35
Symptom Tables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-36
Service Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-39
Charge Roll Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-40
Cover Open Switch/Cable Service Check . . . . . . . . . . . . 2-42
Dead Machine Service Check . . . . . . . . . . . . . . . . . . . . . 2-43
Duplex Unit Service Check. . . . . . . . . . . . . . . . . . . . . . . . 2-45
Envelope Feeder Service Check . . . . . . . . . . . . . . . . . . . 2-48
Fuser Service Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-56
Fuser Solenoid Service Check. . . . . . . . . . . . . . . . . . . . . 2-60
Input Sensor Service Check. . . . . . . . . . . . . . . . . . . . . . . 2-61
Input Tray(s) Service Check. . . . . . . . . . . . . . . . . . . . . . . 2-62
High-Capacity Feeder Input Tray Service Check. . . . . . . 2-66
Main Drive Service Check . . . . . . . . . . . . . . . . . . . . . . . . 2-77
Operator Panel Service Check. . . . . . . . . . . . . . . . . . . . . 2-79
Options Service Check. . . . . . . . . . . . . . . . . . . . . . . . . . . 2-81
Output Bin Sensor Standard Tray Service Check . . . . . . 2-83
Paper Feed Service Check. . . . . . . . . . . . . . . . . . . . . . . . 2-84
Parallel Port Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-86
Printhead Service Check . . . . . . . . . . . . . . . . . . . . . . . . . 2-87
Print Quality Service Check . . . . . . . . . . . . . . . . . . . . . . . 2-88
Smart Contact Assembly Service Check . . . . . . . . . . . . 2-100
Serial Port Service Check. . . . . . . . . . . . . . . . . . . . . . . . 2-101
iv Service Manual
520-xxx
Toner Sensor Service Check. . . . . . . . . . . . . . . . . . . . . 2-102
Transfer Roll Service Check . . . . . . . . . . . . . . . . . . . . . 2-103
agnostic Aids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Diagnostic Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Device Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Quick Disk Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2
Disk Test/Clean . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Flash Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
Disabling Download Emulations . . . . . . . . . . . . . . . . . . . . 3-5
Duplex Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Duplex Quick Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6
Duplex Sensor Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7
Duplex Motor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Duplex Feed 1 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Duplex Feed 2 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Error Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Viewing the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Clearing the Error Log . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10
Hardware Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
LCD Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
Button Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11
SDRAM Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12
ROM Memory Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Parallel Wrap Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Serial Wrap Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13
Input Tray Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Input Tray Feed Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Input Tray Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Output Bin Test - Standard Bin . . . . . . . . . . . . . . . . . . . . 3-16
Base Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Print Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
Printer Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Setting the Page Count . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18
Viewing the Permanent Page Count . . . . . . . . . . . . . . . . 3-18
Maintenance Page Count . . . . . . . . . . . . . . . . . . . . . . . . 3-19
Setting Configuration ID. . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Restore EP Factory Defaults. . . . . . . . . . . . . . . . . . . . . . 3-21
Print Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22
Print Quality Test Pages . . . . . . . . . . . . . . . . . . . . . . . . . 3-23
Print Test with RIP (Controller Board) Removed. . . . . . . 3-24
Printing Menu Settings Page . . . . . . . . . . . . . . . . . . . . . . 3-24
v
4520-xxx
Autocompensator Operation . . . . . . . . . . . . . . . . . . . . . . . . . 3-25
Autoconnect System, Paper Tray Options, Envelope Feeder 3-26
Fuser Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27
Paper Feed Jams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-28
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 Removals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
Center Pan Assembly Removal . . . . . . . . . . . . . . . . . . . . 4-16
Bevel Gear Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-17
Controller Board Removal . . . . . . . . . . . . . . . . . . . . . . . . 4-19
Developer Drive Assembly Removal . . . . . . . . . . . . . . . . 4-20
Duplex Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-21
Duplex Front Cover Assembly Removal. . . . . . . . . . . . . . 4-21
Duplex Front Cover Door Removal . . . . . . . . . . . . . . . . . 4-21
Duplex Motor Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22
EMC Shields Removals . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23
Engine Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25
Main Fan Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-26
Frames Removals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27
Fuser Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-30
Fuser Board Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-31
Fuser Cover Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-32
Fuser Detack Housing Assembly Removal . . . . . . . . . . . 4-34
Fuser Transfer Plate Removal . . . . . . . . . . . . . . . . . . . . . 4-34
Fuser Envelope Conditioner Solenoid Removal. . . . . . . . 4-35
Fuser Narrow Media Sensor/Flag Assembly Removal. . . 4-36
Fuser Exit Sensor Flag Assembly Removal . . . . . . . . . . . 4-36
Fuser Lamp Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-37
Fuser Lower Exit Guide Assembly Removal . . . . . . . . . . 4-37
High Voltage Power Supply Removal. . . . . . . . . . . . . . . . 4-38
Integrated Tray Compensator Assembly Removal. . . . . . 4-39
Integrated Tray Compensator Pick Roll Assembly Removal . .
4-40
Interconnect Board Assembly Removal . . . . . . . . . . . . . . 4-41
vi Service Manual
Low Voltage Power Supply Removal. . . . . . . . . . . . . . . . 4-42
Main Drive Assembly Removal . . . . . . . . . . . . . . . . . . . . 4-45
Main Drive Motor Removal . . . . . . . . . . . . . . . . . . . . . . . 4-46
Multipurpose Tray/Lower Deflector Assembly Removal . 4-47
Operator Panel Assembly Removal. . . . . . . . . . . . . . . . . 4-49
Operator Panel Cable/Cover Switch Removal. . . . . . . . . 4-50
Optional 250/500 Paper Tray Assembly Removal. . . . . . 4-51
Paper Alignment Assembly Removal . . . . . . . . . . . . . . . 4-52
Paper Deflectors Removals. . . . . . . . . . . . . . . . . . . . . . . 4-54
Paper Input Sensor Removal. . . . . . . . . . . . . . . . . . . . . . 4-55
Paper Size Sensing Board Removal . . . . . . . . . . . . . . . . 4-55
Pick Roll Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55
Printhead Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-56
Redrive Assembly Removal. . . . . . . . . . . . . . . . . . . . . . . 4-57
Smart Contact Assembly Removal . . . . . . . . . . . . . . . . . 4-58
Toner Sensor Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 4-59
Transfer Roll Assembly Removal . . . . . . . . . . . . . . . . . . 4-60
Upper Paper Deflector Assembly Removal. . . . . . . . . . . 4-60
Upper Front Cover Hinge Assembly Removal. . . . . . . . . 4-61
Upper Front Cover Interlock Switch Assembly Removal. 4-62
Pick Roller Replacement . . . . . . . . . . . . . . . . . . . . . . . . . 4-63
onnector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1
Low Voltage Power Supply . . . . . . . . . . . . . . . . . . . . . . . . 5-1
High Voltage Power Supply. . . . . . . . . . . . . . . . . . . . . . . . 5-3
Engine Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
Engine Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Controller Board - Non Network. . . . . . . . . . . . . . . . . . . . 5-10
Controller Board - Network . . . . . . . . . . . . . . . . . . . . . . . 5-11
Fuser Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12
Interconnect Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Envelope Feeder Board. . . . . . . . . . . . . . . . . . . . . . . . . . 5-16
Duplex Unit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
Preventive Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Safety Inspection Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Lubrication Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Assembly 3: Printhead. . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
vii
4520-xxx
Assembly 4: Paper Feed (Autocompensator). . . . . . . . . . 7-10
Assembly 5: Paper Feed - Multipurpose Unit. . . . . . . . . . 7-12
Assembly 6: Paper Feed - Alignment. . . . . . . . . . . . . . . . 7-14
Assembly 7: Paper Feed - Output . . . . . . . . . . . . . . . . . . 7-16
Assembly 8: Integrated Paper Tray - 500 Sheet . . . . . . . 7-18
Assembly 9: Main Drive . . . . . . . . . . . . . . . . . . . . . . . . . . 7-20
Assembly 10: Developer Drive. . . . . . . . . . . . . . . . . . . . . 7-22
Assembly 11: Hot Roll Fuser . . . . . . . . . . . . . . . . . . . . . . 7-24
Assembly 12: Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
Assembly 13: Charging . . . . . . . . . . . . . . . . . . . . . . . . . . 7-28
Assembly 14: Electronics 1 . . . . . . . . . . . . . . . . . . . . . . . 7-30
Assembly 15: Electronics II . . . . . . . . . . . . . . . . . . . . . . . 7-34
Assembly 16: Electronics III . . . . . . . . . . . . . . . . . . . . . . . 7-36
Assembly 17: Electronics IV. . . . . . . . . . . . . . . . . . . . . . . 7-38
Assembly 18: Electronics V . . . . . . . . . . . . . . . . . . . . . . . 7-40
Assembly 19: Electronics VI. . . . . . . . . . . . . . . . . . . . . . . 7-42
Assembly 20: 250-Sheet Tray . . . . . . . . . . . . . . . . . . . . . 7-44
Assembly 21: Integrated Paper Tray - 250 Sheet . . . . . . 7-48
Assembly 22: 500-Sheet Tray . . . . . . . . . . . . . . . . . . . . . 7-50
Assembly 23: Duplex Unit . . . . . . . . . . . . . . . . . . . . . . . . 7-54
Assembly 24: Envelope Feeder . . . . . . . . . . . . . . . . . . . . 7-60
Assembly 25: High-Capacity Feeder . . . . . . . . . . . . . . . . 7-62
Assembly 26: Kiosk - Vertical Paper Adapter. . . . . . . . . . 7-72
Assembly 27: Kiosk - Horizontal Paper Adapter. . . . . . . . 7-74
Assembly 28: Options . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-76
Assembly 29: Miscellaneous . . . . . . . . . . . . . . . . . . . . . . 7-78
Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I-
7-2 Serv
520-xxx
ssembly 1: Covers
3
11
7
13
5
9
15
2
10
6
4
12
8
14
1
18
16
17