4.Troubleshooting for Peripheral Units
845
Horizontal Streaks (Scratches) When Inserting Paper With Solid-Fill Images
Symptom
As paper is fed through the cover interposer tray, paper dust accumulates; this paper dust rubs against
the paper causing thin lines (scratches) along the paper feed direction to appear. Such scratches tend
to occur when printing solid fill images. If the scratches rank less than 4.5 on the scale for measuring
paper transport defects, clean the guide boards.
Solution
Clean the two areas shown in the figures.
Wipe the guide board with a soft, dry cloth.
If this does not remove the dirt, wipe the guide board with a dampened and tightly wrung cloth. Then
wipe the guide board with a dry cloth to remove the moisture.
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