Chapter 3 Image Quality Troubleshooting
3.1 Image Troubleshooting
3-4
NOTE
The checkpoints against printing errors are as follows.
Order Phenomenon Checkpoint
1 Vertical thin part, white streak Drum/toner cartridge life, uneven toner
2 Vertical stripe, partial thinness Dirty discharge conductor (PLATE DT SAW)
3
Cyclic dot-like or island-like
dirt
Approx.95mm
cycle:
Approx.78mm
cycle:
Approx.38mm
cycle:
Approx.44mm,
48mm,or 52mm
cycle:
Approx.55mm
cycle:
Approx.72mm
cycle:
OPC Drum damage
FUSER ASSY CL CH Heat Roller
damage or dirty Pressure Roller
Dirty ROLL ASSY REGI
Dirty or damaged Developing Roller,
dirty Charge Roller, or Drum/toner
cartridge error
Dirty or damaged ROLL BTR
Dirty Pressure Roller
4
Cyclic horizontal streak,
horizontal line
Approx.44mm,
48mm,or 52mm
cycle:
Approx.55mm
cycle:
Approx.95mm
cycle:
Approx.78mm
cycle:
Dirty or damaged Developing Roller,
dirty Charge Roller, or Drum/toner
cartridge error
Dirty ROLL BTR or defective Trans
Roller
OPC drum damage or Drum/toner
cartridge error (cleaning error)
FUSER ASSY CL CH Heat Roller
damage or dirty Pressure Roller
5 Black vertical line Dirty FUSER ASSY CL CH or Drum/toner cartridge error
6 Brushed dirt Drum/toner cartridge error (cleaning error)
7
All black High-voltage terminal or contact error
Scanner Assy error
8 Not printed ROS ASSY error
9
Haze-like thinness
Sands look scattered
Condensation in Drum/toner cartridge
10
Dirty paper back Dirty device inside
Dirty FUSER ASSY CL CH Roller
Dirty ROLL BTR (approx. 55mm cycle)
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