Minolta EP5000 General, Mechanical/Electrical page 390

Interleaf EP5000/EP4000 TROUBLESHOOTING
97.04.01
1149SBT050307A
7) Blank Streaks or Bands
Cause Step
Plugged Db
1
Drum charge failure
2
3
Image transfer fail-
4
ure
5
Defective PC Drum
Paper Separator 6
Fingers
Image Erase Lamp
lit at abnormal timing 7
Fusing failure
8
9
Check Item Result
Is Db plugged with foreign
matter, caked toner, etc.?
Are the Comb Electrode
and grid mesh dirty?
Is the Drum Charge Corona
Wire Cleaner at the home
position?
Is the Image Transfer Coro-
na wire dirty?
Is the Corona Wire Cleaner
at the home position?
Are the PC Drum Paper
Separator Fingers dirty or
deformed?
Does the Image Erase
Lamp light up at abnormal
timing?
Is the Upper Fusing Roller
dirty or scratched?
Are the Upper Paper Sepa-
rator Fingers dirty or
scratched?
T-115
Action
Remove foreign matter. If
YES the problem persists,
change the developer.
Clean or change the PC
YES
Drum Charge Corona.
Check the corona wire
NO cleaning mechanism.
Clean or change the Image
YES
Transfer Corona.
Check the corona wire
NO
cleaning mechanism.
Clean or replace the PC
YES Drum Paper Separator Fin-
gers.
Check the Image Erase
YES Lamp.
Clean or change the Upper
YES
Fusing Roller.
Clean or change the Upper
Paper Separator Fingers.
YES