Back Stain - Ricoh G108 Service Manual

4.2.21 BACK STAIN

Symptom
The backside of the paper is stained.
Possible Cause
1) Fuser Unit:
a) The hot roller and the pressure
unit are stained. (The paper is
output immediately after a paper
jam has occurred.)
b) The fusing temperature is not correct.
c) The hot roller and/or the pressure mechanism are damaged
2) The transfer roller is stained.
Countermeasures
1) Clean the hot roller by printing a couple of pages.
2) Replace the fusing unit.
3) Replace the transfer roller unit.
4.2.22 BLANK IMAGE
Symptom
A blank page is output or a specified color
is missing.
Possible Cause
1) The laser path is blocked by paper
or some foreign material is blocking
the optical unit's opening.
2) The development unit is not in its
correct position.
3) The bias voltage of the transfer
roller is not sufficient (loose
connection).
Countermeasures
1) Check the laser beam path and remove unwanted particles.
2) Replace the development unit.
3) Check the development solenoid.
4) Check the transfer roller unit is correctly installed.
5) Replace the high voltage unit.
SM 4-19
IMAGE QUALITY
G108T921.TIF
G108T922.TIF
G108