Symptom
Possible cause
Necessary actions
direction of any color (not C, M,
or Y).
Defective transfer belt unit
Replace the transfer belt unit.
Defective fusing unit
Replace the fusing unit.
White Horizontal Lines or Bands
Symptom
Possible cause
Necessary actions
White lines or bands appear in
images of all toner colors.
Defective PCU
Replace the PCU.
Defective transfer belt unit
Replace the transfer belt unit.
Defective transfer roller
Replace the transfer roller.
Missing Parts of Images
Symptom
Possible cause
Necessary actions
Some parts of images are
missing.
Defective PCU
Replace the PCU.
Defective transfer belt unit
Replace the transfer belt unit.
Defective transfer roller
Replace the transfer roller.
Defective fusing unit
Replace the fusing unit.
Dirty Background
Symptom
Possible cause
Necessary actions
Backgrounds of one CMYK color
are too dense.
Defective PCU
Replace the PCU.
Backgrounds of more than one
CMYK are too dense.color
Defective high voltage supply
board
Replace the high voltage supply
board (1 or 2).
Troubleshooting Guide
127
4
Summary of Contents for G-P3
Page 1: ...Model G P3 Machine Code G190 SERVICE MANUAL January 2008 Subject to change...
Page 11: ...10...
Page 77: ...11 Harness guide C x 2 12 Drive unit D x 6 x 16 3 Replacement and Adjustment 76 3...
Page 91: ...3 Replacement and Adjustment 90 3...
Page 137: ...LEDs No LEDs are used for this model except for the Network Interface 4 Troubleshooting 136 4...
Page 337: ...5 Service Tables 336 5...
Page 411: ...MEMO 410...
Page 412: ...MEMO 411...
Page 413: ...MEMO 412...