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4. Troubleshooting
4.7.4. Horizontal Periodic Light/Dark Lines, Dots.
A. Typical faulty images
B. Troubleshooting procedure
Step
Check item
1
Horizontal periodic bands (OPC, 94.2mm)
– OPC was exposed for long hours.
– Damaged by high voltage in a short time.
2
Horizontal periodic Light/Dark bands (Roller-Magnetic,
35.7mm)
– Roller-Magnetic is inferior in quality.
– V-groove of the surface of Roller-Magnetic is not
uniform.
4-201
Action
As some time passes, most of bands will disappear.
Replace Drum unit.
(Refer to 3.2.1.)
Replace Deve unit.
(Refer to 3.2.2.)
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Table of Contents
Troubleshooting
