1.10 BLACK SPOTS ON THE COPY IMAGE
- Problem -
The grid voltage is not applied correctly.
•
Poor contact between the charge corona casing
and grid plate
•
Main control board defective
•
High voltage supply board C/G/B/T/S defective
- Action -
Is there good electrical contact between the charge corona casing and the
grid plate?
Yes No
Repair the poor contact or replace the charge corona unit if needed.
Check the voltage at CN102-6 on the main board.
0 volts Not 0 volts
Replace the main control board.
Replace the high voltage supply board C/G/B/T/S.
A219T506.wmf
COPY QUALITY 20 December 1996
7-12
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