Specifications

1. COPY QUALITY
1.1 BLANK COPY (WHITE COPY)
- Phenomenon -
White or almost white copy
- Possible Causes -
1. Charge is not applied.
• CC/G/B bias power pack (charge or grid) failure
• Poor contact of power pack lead wires
• Broken charge corona wire
• Leak in insulator or endblock
2. Copy image is not transferred to the paper.
• TC/SC power pack (transfer) failure
• Poor contact of power pack lead wires
• Poor contact of transfer corona wire
• Leak in insulator or endblocks
3. Development roller does not rotate.
• Broken drive gear
• Defective development clutch solenoid
4. The development roller is not properly grounded.
5. Poor drum sensitivity
• Drum exposed to fluorescent light or direct sunlight for long period of
time.
• Drum exposed to ammonia gas or fumes for long period of time.
1 December 1990
6-1