White Banding (At Right Angle With The Feeding Direction) - Toshiba e-STUDIO650 Service Handbook

(10) White banding (at right angle with the feeding direction)

Defective area Step
Main charger 1
2
Drum 3
Discharge lamp 4
Developer unit 5
Drive system 6
High-voltage transformer 7
(main charger and transfer
charger)
JUNE 2002 © TOSHIBA TEC
Check Items
Is there a foreign object on the charger?
Is the connector in proper contact with
the terminal?
Is there any abnormality on the drum sur-
face?
Does the discharge lamp light normally?
Is the developer sleeve rotating normally?
Is there any abnormality on the sleeve
surface?
Are the drum and scanner jittering?
Is the output from the high-voltage trans-
former normal?
5 - 117
Prescription
Remove the foreign object.
Clean or adjust the terminal.
Replace the drum.
Replace the discharge lamp or clean the terminals.
Check the drive system of the developer unit, or
clean the sleeve surface.
Check each drive system.
Check the leakage and circuit.
Replace the high-voltage transformer if it is defec-
tive.
e-STUDIO550/650/810 TROUBLESHOOTING