Black Streaks Or Bands; Black Spots - Minolta Di450 Service Manual

(6)

Black streaks or bands

Section Step
1 PC Drum is dirty.
2 Cleaning Blade has correct
lateral movement.
3 Cleaning Blade is curled
upward or deteriorated.
Engine
4 Comb Electrode and grid
mesh are dirty.
5 Upper Fusing Roller is dirty.
6 PH Unit window is dirty.
1 Mirrors and lens are dirty.
2 Original Glass is dirty or
IR
scratchy.
3 Exposure Lamp is dirty.
(7)

Black spots

Section Step
1 PC Drum is dirty.
2 PC Drum Paper Separator
Fingers are dirty.
3 Toner spilled over areas inside
copier.
Engine
4 Upper Fusing Roller is dirty.
5 Toner is caked in the Develop-
ing Unit.
6 Main Erase Lamp is dirty.
1 Mirrors and lens are dirty.
IR
2 Original Glass is dirty or
scratchy.
Check Result
YES Clean or change.
NO
YES Change.
YES Clean or change.
YES Clean.
YES Clean.
YES Clean.
YES Clean.
YES Clean.
Check Result
YES Clean or change.
YES Clean or change.
YES Clean.
YES Clean or change.
YES Changer developer.
YES Clean.
YES Clean.
YES Clean or change.
T-75
Action
Correct lateral movement
mechanism.
Action