Printer Monocolor: Void Areas, White Spots - Konica Minolta bizhub C25 Service Manual

Field Service Ver. 1.1 May 2011
22.2.19

Printer monocolor: void areas, white spots

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Image Check
2
3 Imaging unit
4 Toner cartridge
5 Installation
environment
Void areas
Check item
There are void areas at the front
side or high density section.
There is void area at the rear side
section.
The surface of the PC drum is
scratched.
Foreign matter or caked toner in
the toner cartridge.
Is the atmospheric pressure at the
installation site low?
22. IMAGE QUALITY PROBLEM
White spots
Result Action
YES See P.360
YES Perform [TRANSFER POWER]
of [ADJUST] under SERVICE
MODE.
YES Change drum unit.
YES Remove foreign matter.
YES Make the following adjustment:
[SERVICE MODE]  [ADJUST]
 [IMAGE ADJ PARAM].
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