6.1.5. Vertical Black Lines
Possible Cause (Scanner)
• Defective contact image sensor element(s).
• Dirt or dust on the exposure glass.
Action:
1. Clean the exposure glass.
2. Replace the contact image sensor.
Possible Cause (Printer)
• The thermal head is defective.
• The paper in the machine is scratched.
Action:
1. Replace the thermal head.
2. Check the paper path if paper is damaged.
H516T503.wmf
H516T512.wmf
August 7th, 1995 TROUBLESHOOTING
COPY QUALITY TROUBLESHOOTING
6-5