Ricoh FW830, Service Manual

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1.2.3 Dirty Background Band
Vertical band?
Yes No
Horizontal band?
Yes No
The fusing rollers may be dirty if background only appears at the copy leading
edge.
⇒
Clean or replace fusing rollers.
Lead from development unit if bands occur at 37 mm intervals.
⇒
Check and fix the development bias leakage.
Drum scratch if the bands are at 251 mm intervals.
⇒
Clean or replace the drum.
Is the edge of the dirty background band sharp?
Yes No
Charge corona grid may be dirty.
⇒
Clean charge corona unit.
Exposure glass or fiber optics may be dirty.
⇒
Clean the exposure glass or fiber optics.
31 December 1992 TROUBLESHOOTING FOR COPY IMAGE
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