Minolta EP5000 General, Mechanical/Electrical page 391

Interleaf EP5000/EP4000 TROUBLESHOOTING
97.04.01
1149SBT050308A
8) Void Areas
Cause Step
Image transfer fail-
1
ure
2
Damp copy paper
3
Small amount of ton-
er supplied
4
PC Drum condensa-
tion 5
Paper guide shorting
6
Fusing failure
7
1149SBT050309A
9) Smear on Back
Cause Step
Dirty Developing
Unit 1
Dirty Image Transfer
2
Corona
3
Dirty Suction Unit
4
Dirty Fusing Unit
5
6
Check Item Result
Is the Image Transfer Coro-
na installed properly?
Is the Image Transfer Coro-
na wire dirty?
Is the image improved by
loading new paper?
Is toner uniformly attracted
onto the Sleeve Roller?
Is the image improved by
running Drum Dehum.?
Is the paper guide shorted
to the frame?
Is the Lower Fusing Roller
scratched or deformed?
Check Item Result
Is the bottom part of the
Developing Unit dirty?
Is the Image Transfer Coro-
na dirty?
Is the Pre-Image Transfer
Guide Plate dirty?
Are the Suction Belts dirty?
Is the Fusing Unit Entrance
Guide Plate dirty?
Are the Upper and Lower
Fusing Rollers dirty?
T-116
Action
Reinstall.
NO
Clean or change the Image
YES
Transfer Corona wire.
Change the copy paper and
instruct the user in how to
store paper and to keep the
YES
copier plugged in during the
night.
Check the Db value and
amount of developer, and
NO
check the Bucket Roller for
operation.
Run Drum Dehum. and
YES instruct the user to take fur-
ther action.
Connect the paper guide
YES through the resistor to the
frame.
Replace the Lower Fusing
YES
Roller.
Action
Clean, and check the De-
YES veloper Scattering Preven-
tion Seal.
Clean the corona and
YES
check the Developing Unit.
Clean the guide plate and
YES
check the Developing Unit.
Clean the Suction Belts and
YES
check the Developing Unit.
Clean the guide plate and
YES
check the Developing Unit.
Clean or change the Upper
and Lower Fusing Rollers
YES
and check the Fusing Roller
cleaning mechanism.