Lexmark 20G1500 - T 640rn B/W Laser Printer Support and Manuals
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Service Manual - Page 1
Lexmark™ T640, T642, and T644 4061-xx0
• Table of Contents • Start Diagnostics • Safety and Notices • Trademarks • Index
Lexmark and Lexmark with diamond design are trademarks of Lexmark International, Inc., registered in the United States and/or other countries. Revised September 27, 2005
For the complete PDF manual please visit www.LaserPros.com.
Service Manual - Page 2
...calling 1-800-553-9727. This publication could include technical inaccuracies or typographical errors. Improvements or changes in certain transactions; You can purchase additional copies ...P/N 12G9609 Other trademarks are periodically made at private expense. Changes are the property of Lexmark International, Inc. In other countries. All rights reserved. 4061-xx0
Edition: September 27,...
Service Manual - Page 3
...
Maintenance approach 1-1 Options 1-1
Configured models 1-2 Specifications 1-3
Resolution 1-3 Data streams 1-3 Print...specifications 1-6 Environment 1-7 Acoustics 1-7 Media specifications 1-8 Paper and specialty media guidelines 1-8 Supported... Service errors (9xx.xx's 2-1 User status and attendance messages 2-1 Additional information 2-1
Understanding the printer operator panel 2-2 ...
Service Manual - Page 4
... 2-43 Check device connection messages 2-43 User attendance messages-paper jams and paper handling errors (2xx.xx 2-44 Service checks 2-72 5-Bin mailbox service check 2-72 900.xx Error code service check 2-75 927.xx Fan service check 2-76 Main fan 2-76 Cartridge fan service check 2-76 950.00 through 950.29 EPROM mismatch failure 2-77 950.30 through...
Service Manual - Page 5
... button assembly service check 2-122 StapleSmart finisher service check 2-123 System board service check 2-126 Toner sensor service check 2-127 Transfer roll service check 2-128
Diagnostic aids 3-1
Accessing service menus 3-1 ...Disk Test 3-18 Disk Test/Clean 3-19 Flash Test 3-19 PRINTER SETUP 3-20 Defaults 3-20 Page Count 3-20 Perm Page Count (permanent page count 3-20 Serial Number 3-...
Service Manual - Page 6
...xx0
Envelope Enhance 3-20 Engine Setting 1 through 4 3-20 Model Name 3-20 Configuration ID 3-21 Edge to Edge 3-21 Parallel strobe adjustment (Par x Strobe Adj 3-21 EP SETUP 3-22 EP Defaults 3-22 Fuser... troubleshooting 3-33 Paper feed jams 3-37 Access doors and trays 3-37 Clearing printer jams 3-37 250 Paper Jam Check MP Feeder 3-38 260 Paper Jam Check Env Feeder 3-39
vi Service Manual
Service Manual - Page 7
... 201 Paper Jam Remove Cartridge 3-41 202 Paper Jam Open Rear Door 3-43 23x Paper Jam Open Duplex Rear Door 3-44 270 and 280 Paper Jams 3-45 27x Paper Jam Check Bin x 3-45 28x Paper Jam Check Finisher 3-46 Clearing staple jams 3-48
Repair information 4-1
Handling ESD-sensitive parts 4-1 Adjustment procedures 4-2
Fuser solenoid...
Service Manual - Page 8
...expander control board 5-11 StapleSmart finisher 5-12
Preventive maintenance 6-1
Safety inspection guide 6-1 Lubrication specifications 6-1 Scheduled maintenance 6-1
Maintenance kit 6-1
Parts catalog 7-1
How to use this parts catalog 7-1 Assembly 1: Covers 7-2 Assembly 2: Frame 1 7-4 Assembly 3:...13: Transfer/charging 7-26 Assembly 14: Electronics-power supplies 7-28
viii Service Manual
Service Manual - Page 9
...
Accessing the printer system board A-5
Removing or installing a memory card A-7 Removal A-7 Installation A-8
Removing or installing a flash memory or firmware card A-8 Removal A-8 Installation A-9
Installing an option card A-10
Replacing the shield A-11
Printing and using features A-11 Canceling a print job A-11 Printing the menu settings page A-13 Printing a network setup page A-13...
Service Manual - Page 10
x Service Manual
4061-xx0 Printing a directory list A-14 Printing confidential and held jobs A-14
Linking trays A-17 Identifying and linking output bins A-18 Linking output bins A-20
Index I-1 Part number index I-9
For the complete PDF manual please visit www.LaserPros.com.
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