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Lexmark OptraImage SC 1275 Service Manual - Page 112

Lexmark OptraImage SC 1275 Manual

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Printhead Frame Removal 1. Remove the outer covers. 2. Remove the power unit frame. 3. Remove the printhead unit cooling fan motor (1 connector, 2 screws). 4. Remove the printhead unit frame (2 connectors, 8 screws). Repair Information 3-15

Section	Page
Laser Notice	8
Laser Advisory Label	9
Class 1 Laser Statement Label	9
1. General Information	22
Maintenance Approach	22
Tools	22
Abbreviations	23
Paper Feed Operation	23
Drum Cartridge Toner Full Detection	27
Synchronizing Rollers	28
Paper Type Detection	29
Development	31
Toner Empty / Toner Cartridge Detection	31
AIDC Sensor and Erase Lamp	32
2. Diagnostic Information	36
Start	36
Initial Check	36
Operator Error Message Table	37
Status Messages	37
Line 1 Status Messages	38
Line 2 Messages	45
Supplies Status Messages	46
Attendance Messages	46
Service Error Message Table	61
Symptom Table	64
Service Checks	68
Fuser Service Check	68
Developing Motor Service Check	69
Transport Motor Service Check	69
Image Transfer Belt Service Check	70
Paper Jam Service Check	70
Toner Cartridge Rack Service Check	73
Printhead Cooling Fan Service Check	74
Power Supply Cooling Fan Motor Service Check	74
Suction Fan Motor Service Check	74
AC Power Service Check	75
Marks on Paper Service Check	76
Image Quality Troubleshooting	77
Sensor Service Check	82
Diagnostic Aids	83
Basic Printer Paper Passage Test	83
Operator Menu Disabled	83
Diagnostic Mode	83
Diagnostic Menu Group	83
Setting Printer Registration	85
Print Tests	85
Quality Pages	86
Clean Engine Test	86
LCD Hardware Test	86
Button Test	86
DRAM Memory Test	86
ROM Memory Test	87
Parallel Wrap Test	88
Serial Wrap Tests	89
Input Tray Sensor Test	90
Size Sensing Sensor Test	90
Base Sensor Test	91
Quick Disk Check	92
DISK Test/Clean	92
Flash Test	93
Setting the Page Count	93
Viewing the Permanent Page Count	93
Viewing the Error Log	93
Clearing the Error Log	94
Exiting Diagnostic Mode	94
Print Quality Test Page	95
Print Quality Test Page	96
3. Repair Information	98
Precautions for Disassembly and Cleaning	98
Instructions for Handling the PWBs with MOS ICs	98
Precautions for Handling the Drum Cartridge	99
Parts not to be touched	99
Precautions for Handling the Laser Equipment	100
Adjustment Procedures	100
Registration Adjustment	100
Rack Lever Solenoid Adjustment	102
Removal Procedures	102
Outer Cover Removals	102
Image Transfer Roller Removal	103
Drum Cartridge Removal	103
Waste Toner Bottle Removal	104
Image Transfer Belt Removal	104
Fuser Removal	105
Oil Coating Roller Removal	106
Heater Lamp Removal	107
Printhead Removal	108
Paper Exit Removal	109
High Voltage (HV1) / Sub High Voltage Board (PWB-F) Removal	109
Shield Plate Removal	110
Power Supply Removal	110
Mechanical Control Board Removal	111
Power Supply Frame Removal	111
Printhead Frame Removal	112
Toner Empty / Toner Cartridge Detecting Board (PWB- B) Removal	113
Toner Cartridge Rack Removal	113
Mechanical Controller Board Frame Removal	116
Paper Size/Cassette Detecting Board (PWB-E) Removal	116
Paper Take-Up Removal	116
Suction Assembly Removal	122
Suction Fan Motor Removal	124
4. Locations	126
Parts of the Printer	126
Parts of the Printer	127
Printing Process	131
Switches and Sensors	132
Gears and Rollers	135
Electrical Components	137
Connectors	143
Printed Circuit Boards	144
5. Parts Catalog	148
How to Use This Parts Catalog	148
Assembly 1: Housing	149
Assembly 2: Frames 1	153
Assembly 3: Frames 2	157
Assembly 4: Drive	161
Assembly 5: Paper Take-Up 1	165
Assembly 6: Paper Take-Up 2	169
Assembly 7: Image Transfer Belt	171
Assembly 8: Image Transfer Belt	173
Assembly 9: Transfer Roller	175
Assembly 10: Paper Transport	179
Assembly 11: Rack	181
Assembly 12: Fuser 1	185
Assembly 13: Fuser 2	187
Assembly 14: Fuser/Exit	189
Assembly 15: Exit	191
Assembly 16: Electrical Parts	193
Assembly 17: Second Cassette (Tray 1)	197
Assembly 18: Third Cassette (Tray 2)	201
Assembly 19: Paper Tray	203
Assembly 20: Controller Card	205
A	208
B	208
C	208
D	208
E	208
F	208
H	208
I	208
L	208
M	208
N	208
O	209
P	209
Q	209
R	209
S	209
T	209
V	209
W	209