Printer Section: Black Streaks Or Bands - Konica Minolta bizhub 164 Service Manual

Field Service Ver. 2.0 Jun. 2010
16.2.16

Printer section: black streaks or bands

A. Typical faulty images
B. Troubleshooting procedure
Step
1 Drum is dirty or scratchy.
2 Foreign matter (such as paper dust) sticks to the cleaning
blade of IU or the blade curves upward.
3 DB of IU is plugged with foreign matter
(such as paper dust).
4 Drum charge corona grid mesh and comb electrode are
dirty, scratchy, deformed, damaged, or out of position.
5 Fusing roller is dirty or scratchy.
6 PH window of the PH unit is dirty or scratchy.
Black streaks
Check
16. IMAGE QUALITY PROBLEM
Black bands
Result Action
YES • Clean or change.
YES • Remove foreign matter,
correct, or change.
YES • Remove foreign matter.
YES • Clean or change.
YES • Clean or change.
YES • Clean or change.
NO • Change IU.
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