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e-STUDIO520/600/720/850 TROUBLESHOOTING
March 2005 © TOSHIBA TEC
5 - 138
13)Black banding (at right angle with the feeding direction)
Fig.5-13
Defective area
Step
Check items
Prescription
Fuser unit
1
Is the fuser roller dirty?
Clean them.
2
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)
3
Is the high-voltage transformer out-
put defective?
Replace the transformer.
Drum
4
Is there a deep scratch on the drum
surface?
Replace the drum if the scratch has
reached the aluminum base.
Scanner
5
Is there a foreign matter on the car-
riage rail?
Remove the foreign matter.
Feeding direction
Содержание E-STUDIO520
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