6.1.1. Blank Copies
Possible Cause (Printer):
• The harness conneted to the FCU is out of position.
• The thermal head or the platen roller is not in the correct position.
• The thermal head is defective.
• The FCU is defective.
Action:
1. Check the connection between the FCU (CN13) and the thermal head.
2. Check if the thermal head and the platen roller are in the correct position.
3. Replace the thermal head.
4. Replace the FCU.
6.1.2. Black Copies
Possible Cause (Scanner)
• The harness connecetd to the FCU is out of position.
• The contact image sensor is defective.
Action:
1. Check the connection between the FCU (CN6) and the contact image
sensor.
2. Replace the contact image sensor.
Possible Cause (Printer)
• The thermal head is defective.
• The FCU is defective.
Action:
1. Replace the thermal head.
2. Replace the FCU.
TROUBLESHOOTING August 7th, 1995
COPY QUALITY TROUBLESHOOTING
6-2