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Lexmark 2050 Color Jetprinter Service Manual - Page 77

Parts Catalog 7-17, Pick Roll & Paper Load Shaft B/M

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AsmIndex 7 -1 7 -1 -2 -2 -3 -3 -4 -5 -6 -7 -7 -8 -8 -9 -9 -10 -11 -12 -13 Part Number 13A1227 13A1442 13A1228 13A1443 69G4131 13A1451 13A1229 1367463 1367019 69G4169 13A1448 13A1226 13A1440 69G4165 13A1447 69G4188 69G4188 69G4188 69G4188 Units 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 4 1 1 Description Right Edge Guide & Width Adjust Strip (White) Right Edge Guide & Width Adjust Strip (Black) Left Edge Guide (White) Left Edge Guide (Black) Upper Paper Support (White) Upper Paper Support (Black) Pick Roll & Paper Load Shaft B/M Pick Roll Hub Asm Envelope Buckler B/M, Left & Right Back (White) Back (Black) Paper Load Door (White) Paper Load Door (Black) Manual Insert Tray (White) Manual Insert Tray (Black) E-Ring (PP) Screw, Side Frame (PP) Spring, Left Paper Load (PP) Spring, Right Paper Load (PP) Parts Catalog 7-17

Section	Page
1. General Information	9
Resolution and Print Speed	9
Power Consumption	9
Maintenance Approach	9
Abbreviations	10
Unique Tools Required For Service	10
2. Diagnostic Information	11
Start	11
Error Indicator Table	12
Power-On Self Test (POST) Sequence	12
POST Symptom Table	13
Symptom Tables	14
Service Checks	16
Envelope Feed Service Check	16
First Print Line Service Check	16
Maintenance Station Service Check	17
Paper Feed Service Check	18
Paper Path Service Check	21
Parallel Port Service Check	22
Power Service Check	22
Print Quality Service Check	23
Transport Service Check	25
3. Diagnostic Aids	27
Encoder Sensor Test	27
Paper Sensor Test	28
Parallel Port Test	29
Print NVRAM Contents	30
Test Page	31
4. Repair Information	33
Handling ESD-Sensitive Parts	33
Adjustments	34
Removal Procedures	34
Releasing Plastic Latches	34
Base Assembly Removal	35
Carrier Belt Removal	35
Carrier Frame Assembly Removal	36
Carrier Transport Motor Removal	37
Code Module Removal	38
Edge Guide Asm and Paper Load Shaft Removal	38
Encoder Card Removal	38
Encoder Strip Removal	38
Exit Drive Belt Removal	39
Exit Roller Removal	39
Feed Arm Assembly Removal	39
Front Cover Removal	40
Gutter Pad Removal	40
Inside Idler Gears Removal	41
Large Feed Roll Removal	42
Large Outside Gear Removal	43
Left Side Frame Assembly Removal	44
Maintenance Station Assembly Removal	45
Maintenance Wipers and Caps Removal	45
Manual Insert Tray Removal	45
Mid Frame Assembly Removal	45
Paper Feed Motor Removal	46
Paper Guide and EOF Flag Assembly Removal	46
Paper Load Door Removal	48
Pick Roll Hub, Shaft and Envelope Bucklers Removal	48
Power Supply Removal	48
Printhead Cable, Cradle & Paper Deflector Removal	49
Printhead Carrier Assembly Removal	51
Printhead Rubber Backer Removal	51
Rear Cover Removal	52
Right Side Frame Assembly Removal	52
Small Feed Roll Shaft, Rollers & Paper Flap Removal	53
Star Roller Removal	53
System Board Removal	53
5. Connector Locations	55
System Board Connectors	55
Encoder Card Connector	56
6. Preventive Maintenance	59
Lubrication Specifications	59
7. Parts Catalog	61
How To Use This Parts Catalog	61
Assembly 1: Covers	62
Assembly 2: Frames	64
Assembly 3: Paper Feed	66
Assembly 4: Electronics	68
Assembly 5: Carrier	72
Assembly 6: Carrier Transport	74
Assembly 7: Sheet Feeder	76
Assembly 8: Maintenance Station	78