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18 May, 1999
7.1.3 DIRTY BACKGROUND
Possible Cause (Scanner)
• Scanner shading correction error or incorrect threshold level.
Action:
1. Clean the shading plate.
Possible Causes (Printer)
• Defective toner cassette
• The charge voltage is not properly supplied.
• The hot roller is dirty.
• Defective mechanical control board (MCB)
Action:
1. Check that the charge voltage is properly supplied. (Refer to Section 7.1.1—
Blank Copies.)
2. Check the connections between the charge terminal and the terminal on the
mechanical control board (MCB).
3. Check whether the hot roller surface or cleaning pad is dirty.
G027T502.WMF
7-5
COPY QUALITY TROUBLESHOOTING
G027T503.WMF
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