Countermeasures; White Line 2; Symptom; Possible Cause - Ricoh G157 Service Manual

4.4.7 WHITE LINE 2

Symptom

A vertical white line appears from the
leading edge to the trailing edge.

Possible Cause

1) The dustproof glass on the optics unit
is smeared with toner or unwanted
particles.
2) Unwanted particles bond to the laser
beam path.
3) There are unwanted particles mixed
in the development unit.

Countermeasures

1) Clean the dustproof glass.
d) Remove the OPC belt unit and the development unit.
e) Open the optics unit cover.
f) Clean the dust-shield glass.
2) Check and clean the laser beam path.
3) Replace the development unit.

4.4.8 VERTICAL WHITE BAND

Symptom
A vertical white band appears.
Possible Cause
1) Doctor blade failure in the
development unit.
2) Stain on the OPC belt charge roller.
3) Stain on the OPC belt.
4) Stain on the transfer belt.
Countermeasures
1) Replace the development unit.
2) Replace the OPC belt unit.
3) Replace the transfer belt unit.
SM
CÓPIA NÃO CONTROLADA
4-27
CÓPIA NÃO CONTROLADA
IMAGE QUALITY
G157T907.TIFF
G157T908.TIFF
G157