Blank Streaks Or Bands; Void Areas - Minolta Di450 Service Manual

(8)

Blank streaks or bands

Section Step
1 PC Drum is scratchy and dirty.
2 PC Drum Paper Separator
Fingers are dirty or deformed.
3 PC Drum is properly
grounded.
4 Image Transfer Corona wire is
dirty.
5 Comb Electrode and grid
Engine
mesh are dirty.
6 Upper Fusing Roller is
scratchy or dirty.
7 Fusing Paper Separator Fin-
gers are scratchy or dirty.
8 DB is plugged with caked
toner and foreign matter.
9 PH Unit window is dirty.
1 Mirror is dirty.
2 Shading sheet is dirty.
IR
3 Scanner shading position is
correct.
(9)

Void areas

Section Step
1 Image Transfer Corona is
installed properly.
2 Image Transfer Corona wire is
installed correctly.
3 Upper Fusing Roller is
Engine scratchy or dirty.
4 Toner is even on Sleeve/Mag-
net Roller.
5 DB is plugged with caked
toner and foreign matter.
Check Result
YES Clean or change.
YES Clean of change.
NO
YES Clean or change.
YES Clean or change.
YES Clean or change.
YES Change.
YES Remove foreign matter.
YES Clean.
YES Clean.
YES Clean.
YES Correct IR shading position.
Check Result
NO
NO
YES Change.
NO
YES Remove foreign matter.
T-76
Action
Clean or change PC Drum
ground plate.
Change developer.
(See ADJUSTMENT.)
Action
Install correctly.
Install correctly.
Adjust DB. (See ADJUST-
MENT.) Correct developer
conveying mechanism.
Change developer.