Transfer Roller Contact Motor....................................................................................................................72
ID Sensors.....................................................................................................................................................74
Drive..................................................................................................................................................................75
Drive unit.......................................................................................................................................................75
Duplex...............................................................................................................................................................77
Duplex Jam Sensor......................................................................................................................................77
Inverter Sensor.............................................................................................................................................78
Duplex Motor and Inverter Motor..............................................................................................................78
Fusing................................................................................................................................................................80
Fusing Unit....................................................................................................................................................80
Thermistor and Thermostat..........................................................................................................................80
Fusing Lamp..................................................................................................................................................83
Fusing Exit Sensor and Paper Exit Sensor..................................................................................................84
Fusing Registration Sensor..........................................................................................................................84
Fan Direction................................................................................................................................................85
Adjustments.......................................................................................................................................................86
Gamma Adjustment.....................................................................................................................................86
4. Troubleshooting
Process Control Results....................................................................................................................................91
Service Call Conditions...................................................................................................................................93
Summary.......................................................................................................................................................93
SC Code Descriptions.................................................................................................................................93
Troubleshooting Guide..................................................................................................................................124
Blank Print...................................................................................................................................................124
All-black Print.............................................................................................................................................124
Missing CMY Color...................................................................................................................................125
Light Print....................................................................................................................................................125
Repeated Spots or Lines on Prints............................................................................................................125
Dark Vertical Line on Prints.......................................................................................................................126
White Horizontal Lines or Bands..............................................................................................................127
Missing Parts of Images............................................................................................................................127
Dirty Background.......................................................................................................................................127
Partial CMY Color Dots............................................................................................................................128
6
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