Monocolor: Void Areas, White Spots - Konica Minolta magicolor 7450 Service Manual

Field Service Ver. 1.0 May 2006
16.3.8

Monocolor: void areas, white spots

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Image Check
1
2
Imaging Unit
3
4
Toner Cartridge
5
Void areas
4036fs4050c0
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.
Dirty on the outside.
Foreign matter or caked toner in
the Toner Cartridge.
16. Image quality problem
White spots
4036fs4051c0
Result
YES P.219
YES Perform [TRANSFER POWER]/
[1'ST TRANSFER] under Service
Menu.
YES Change Imaging Unit.
YES Clean.
YES Remove foreign matter.
Action
223