Symptom; Possible Cause; Countermeasures; Vertical Staggering Image - Ricoh G157 Service Manual

4.4.11 VERTICAL STAGGERING IMAGE

Symptom

Some images make wavy lines.

Possible Cause

1) Shock or vibration is given to the
copier.
2) Failure of the LD unit (vibration from
the rotation of the scanner motor).

Countermeasures

1) Do not apply shock or vibration to the copier body.
2) Replace the LD unit.

4.4.12 BANDING

Symptom
A horizontal band-like line appears.
Possible Cause
1) This is a transfer failure because of
the uneven rotational speed caused
by the shock that occurs when the
seam of OPC belt passes over the
cleaning blade.
2) The OPC belt and the transfer belt
fail to maintain the regular and
proper rotation due to the impact
caused during the retraction of the
toner cartridge.
Countermeasures
1) Replace the OPC belt unit.
2) Replace the development unit.
SM 4-29
IMAGE QUALITY
G157T911.TIFF
G157T912.TIFF
G157