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TROUBLESHOOTING
COPY QUALITY TROUBLESHOOTING
7.1.11. Faint Copies
Possible Causes (Scanner)
•
Dirty shading plate and/or exposure glass
•
Wrong scan threshold
•
Contact image sensor (xenon lamp, sensor element) defect
Action:
•
Clean the white plate (for both book and ADF).
•
Clean the exposure glass.
•
Adjust the scan threshold settings.
•
Replace the image sensor.
Possible Causes (Printer)
•
Poor drum sensitivity.
•
Dirty laser optic components.
•
Incorrect development/ transfer bias
•
Defective quenching lamp
•
Low toner
•
Low fusing temperature
h523t512.wmf
7-12
June 10th, 1997
h523t503.wmf
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