White Banding (In The Feeding Direction) - Toshiba e-STUDIO650 Service Handbook

(9) White banding (in the feeding direction)

Defective area
Laser optical unit
Main charger grid
Developer unit
Drum
Transport path
Discharge lamp
Scanner
Cleaner
e-STUDIO550/650/810 TROUBLESHOOTING
Step Check Items
1 Is there a foreign object or stain on the slit
glass?
2 Is there a foreign object on the charger grid?
3 Is the developer material transported prop-
erly?
4 Is there a foreign object on the drum seal?
5 Is the upper drum seal of the developer
unit in contact with the drum?
6 Is there a foreign object on the drum sur-
face?
7 Does the toner image contact with any
foreign object before the paper enters the
fusing section after the separation?
8 Are any of the discharge lamps off?
9 Is there a foreign object or stain on the
light path?
10 Is there any foreign object, which contacts
the drum, on the cleaner stay?
Clean the slit glass.
Remove the foreign object.
Remove the foreign object.
Remove the foreign object.
Correct the position of the drum seal or replace it.
Replace the drum.
Remove the foreign object.
Replace the discharge lamp.
Clean the lens and mirrors.
Remove the foreign object.
5 - 116
Prescription
JUNE 2002 © TOSHIBA TEC