Soiling of spots at ITB intervals
[Symptom]
Soiling of spots at ITB intervals may occur.
[Cause]
Foreign matter is fixed on the ITB, causing soiling of spots at ITB intervals.
[Reference] How to check whether the spots appear at ITB intervals: Spots appear at intervals of approx. 5 A3-size sheets at
continuous output. If it can be confirmed that the positions of the spots in the horizontal scanning direction are always the same,
the spots can be judged to be attributed to the ITB. When it is highly possible that the ITB is the cause, check its surface.
[Service work]
Dry wipe the foreign matter attached to the ITB surface.
[Caution] Do not use alcohol when wiping.
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