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Lexmark Optra T420 T420N 4048

Tags : LexmarkOptraT420T420N4048–00x 
Lexmark Optra T420 T420N 4048 Manuel de service

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Description

Lexmark T420(n)  4048–00x Service Manual
Edition: September 2002

Laser Notices. vii
Safety Informationxvii
Preface . xxii
General Information 1-1
Maintenance Approach 1-1
Special Tools 1-1
Serial Number . 1-2
Printer Identification 1-2
Printer Features . 1-3
Memory and User Flash Memory 1-3
Resolution and Print Quality 1-4
Print Area 1-5
Print Media . 1-6
Printer Data Streams . 1-7
Fonts . 1-8
Paper Handling . 1-8
Connectivity . 1-10
Printer Speed 1-11
RIP Card Specifications 1-11
Supplies 1-12
Operator Panel . 1-12
Options . 1-13
Acronyms . 1-14
Diagnostic Information . 2-1
Start . 2-1
Operator Panel 2-2
Light Patterns . 2-3
Status Information Light Patterns 2-3
Attendance Information Light Patterns 2-5
Obtaining Information about Printer Service Error Codes. 2-11
Service Error Codes . 2-11
Power–On Operations2-25
Power–On Self Test (POST). 2-26
Symptom Tables 2-26
Service Checks . 2-29
Cooling Fan Service Check2-29
Cover Interlock Switch Service Check . 2-30
RIP Card Service Check . .2-31
Dead Machine Service Check . .2-33
Low Voltage Power Supply (LVPS) Service Check . .2-33
Fuser Service Check .2-34
Main Motor Service Check . .2-37
Operator Panel Service Check. .2-38
Transfer Roll Service Check .2-40
Paper Feed Service Checks. .2-41
Parallel Port Service Check . .2-47
Print Quality Service Checks .2-48
Solving Print Quality Problems . .2-55
Restoring Factory Defaults .2-62
Using Print Quality Test Pages .2-62
Diagnostic Aids . .3-1
Operator Panel .3-1
Menu Definition . .3-1
Configuration Menu Group or Diagnostic Menu Group . .3-2
Printer Diagnostics Mode .3-6
Continuity Check on HVPS/Cartridge . .3-7
Repair Information . .4-1
Handling ESD-Sensitive Parts .4-1
Adjustments .4-2
Printhead Assembly Adjustment .4-2
Adjusting Paper Feed Alignment .4-3
Lubrication . .4-3
Re–assembly . .4-5
Removal Procedures . .4-6
Cover Removals. .4-6
Rear Exit Door Removal.4-18
Duplex Tray Assembly Removal . .4-19
Fuser Assembly, Fuser Paper Exit Guide,
Fuser Exit Sensor, and Fuser Lamp Removal . .4-20
Terminal Assembly Removal .4-22
Tray Damper and Spring Removal.4-23
Door Latches (Right Side) Removal. .4-24
Bracket, Opener Shutter Removal .4-25
Paper Guide Roller Removal .4-26
Charge Roll Removal .4-27
Right Guide Removal .4-28
Left Guide Removal . .4-28
Smart Button Sensor Removal. .4-31
Entrance Guide Removal . 4-32
Transfer Roll Assembly and Left Transfer Support Bearing Removal.
4-33
Bracket, Paper Detect (Input Sensor) Removal 4-34
D–Roll Tray 1 Feed Removal 4-35
D–Roll (Tray 1) Shaft Assembly Removal. 4-36
3–Pin and 2–Pin Connectors Removal . 4-38
Printhead Removal 4-39
RIP Card Cage (with card in place) Removal 4-40
Main Drive Motor Assembly Removal 4-42
Motor Assembly (Stepper) Removal . 4-43
Main Drive Assembly Removal . 4-44
Reference Plate Assembly Removal. 4-46
Cartridge Coupling Assembly Removal 4-48
Upper (MPF) Housing Assembly (with Paper Flag) Removal 4-49
Lower (MPF) Housing Assembly - Paper Sensor Removal . 4-50
Lower (MPF) Housing Assembly Removal 4-52
MPF Roller Assembly Removal 4-53
HVPS Card Removal 4-56
LVPS Card Removal . 4-57
Cooling Fan Removal 4-58
Locations 5-1
Cables . 5-2
Cables (continued) . 5-4
Sensors 5-6
RIP Card Assembly 5-8
Power Supply (LVPS) . 5-11
High Voltage Power Supply (HVPS) 5-12
Preventive Maintenance 6-1
Safety Inspection Guide . 6-1
Lubrication Specifications 6-1
Parts Catalog . 7-1
How to Use This Parts Catalog 7-1
Index . I-1




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