Service manual

T- 7 5
(6) Black streaks or bands
(7) Black spots
Section Step Check Result Action
Engine
1 PC Drum is dirty. YES Clean or change.
2 Cleaning Blade has correct
lateral movement.
NO Correct lateral movement
mechanism.
3 Cleaning Blade is curled
upward or deteriorated.
YES Change.
4 Comb Electrode and grid
mesh are dirty.
YES Clean or change.
5 Upper Fusing Roller is dirty. YES Clean.
6 PH Unit window is dirty. YES Clean.
IR
1 Mirrors and lens are dirty. YES Clean.
2 Original Glass is dirty or
scratchy.
YES Clean.
3 Exposure Lamp is dirty. YES Clean.
Section Step Check Result Action
Engine
1 PC Drum is dirty. YES Clean or change.
2 PC Drum Paper Separator
Fingers are dirty.
YES Clean or change.
3 Toner spilled over areas inside
copier.
YES Clean.
4 Upper Fusing Roller is dirty. YES Clean or change.
5 Toner is caked in the Develop-
ing Unit.
YES Changer developer.
6 Main Erase Lamp is dirty. YES Clean.
IR
1 Mirrors and lens are dirty. YES Clean.
2 Original Glass is dirty or
scratchy.
YES Clean or change.