White Line/Bands In Sub Scan Direction Black Line/Bands In Sub Scan Direction - Konica Minolta pagepro 5650EN Service Manual

15. Image quality problems
15.2.6 White line/bands in sub scan direction
Black line/bands in sub scan direction
A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Media path
2 Transfer roller
3 Toner cartridge Is PC drum scratched or dirty?
4 Fuser unit
5 PH unit
⎯
6
172
Check item
Is the media path dirty with toner?
Is the transfer roller dented,
scratched, or dirty?
Is the fusing roller scratched or
dirty?
Is the PH window dirty?
Is the problem eliminated after
checks have been made through
step 5?
Field Service Ver. 1.0 Nov. 2007
Result Action
YES Clean it.
YES Replace the transfer roller.
YES Replace the toner cartridge.
YES Replace the fuser unit.
YES Clean the PH window.
Replace the print control board
(PRCB).
YES
Replace the MFP board (MFPB).
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