1. COPY QUALITY
1.1 BLANK COPY (WHITE COPY)
- Problem -
White or almost white copy.
- Possible Causes -
1. Charge is not applied.
•
High voltage supply board (charge or grid) failure
•
Poor charge corona unit contact
•
Broken charge corona wire
•
Leak in insulator or endblock
•
Charge corona wire cleaner pads are in contact with the corona wire.
2. Copy image is not transferred to the paper.
•
High voltage supply board (transfer) failure
•
Poor transfer corona unit contact
•
Broken transfer corona wire
•
Leak in the insulator or endblocks
3. Poor drum sensitivity.
•
The drum was exposed to fluorescent light or direct sunlight for a long
period of time.
•
The drum was exposed to ammonia gas or corrosive fumes for a long
period of time.
4. The imaging unit does not rotate.
•
Broken drive gear
A219T500.wmf
Trouble-
shooting
20 December 1996 COPY QUALITY
7-1
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