IMAGE QUALITY
4.2.7 WHITE LINE 2
Symptom
A vertical white line appears from the
leading edge to the trailing edge on the
image.
Possible Cause
1) The dust-shield glass on the optics
unit is smeared with toner or
unwanted particles.
2) Foreign particles are located in the
laser beam’s path.
3) There are foreign particles present in the development unit.
Countermeasures
1) Clean the dust-shield glass.
a) Remove the OPC belt unit and the development unit.
b) Open the optics unit cover.
c) Clean the dust-shield glass.
2) Check and clean the laser beam path.
G108T907.TIF
G108T908.TIF
3) Replace the development unit.
4.2.8 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.
G108 4-12 SM
To Next Page
Loading...
