Toshiba e-STUDIO166 - Troubleshooting Black Banding (Right Angle)

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TROUBLESHOOTING
5 - 33
5
13)Black banding (at right angle with the feeding direction)
Fig. 5-13
Defective area Step Check items Prescription
Main charger 1 Is the needle electrode dirty or
deformed?
Clean or replace the needle elec-
trode.
Fuser unit 2 Are the fuser roller, separation finger
for fuser roller and thermistor dirty?
Clean them.
3 Has the cleaning roller, pressure
roller, fuser roller and separation fin-
ger for fuser roller reached their PM
life?
Replace them.
High-voltage transformer
(Main charger / Developer
bias / Transfer charger)
4 Is the high-voltage transformer out-
put defective?
Adjust the output, or replace the
transformer.
Drum 5 Is there a deep scratch on the drum
surface?
Replace the drum if the scratch has
reached the aluminum base.
6 Is there thin scratch (drum pitting) on
the drum surface?
Check and adjust the contact condi-
tion of the cleaning blade and recov-
ery blade.
Scanner 7 Are the original glass (especially the
position of shading correction plate)
and CIS unit dirty?
Clean them.
Feeding direction