Olivetti PF-P09, Service Manual

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22. IMAGE QUALITY PROBLEM Field Service Ver. 1.1 May 2011
368
TROUBLESHOOTING
22.2.24 Printer 4-color: white lines, white bands, colored lines and colored bands
in sub scan direction
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C507DA
White lines White bands Colored bands Colored lines
Step Section Check item Result Action
1 Image check A white line or colored line in sub
scan direction. YES Clean the comb electrode.
2 Transfer belt unit Fingerprints, oil, or other foreign
matter is evident on the transfer belt.
YES Clean with specified solvent.
(See Maintenance.)
3 Transfer belt is dirty or scratched. YES Clean dirty belt with a soft cloth.
Change transfer belt unit if belt is
damaged.
4 Cleaning blade is not effective in
removing toner completely. YES Change transfer belt unit.
5 Transfer roller
unit Transfer roller is dirty or scratched. YES Change transfer roller unit.
6 Paper path There is foreign matter on paper
path. YES Remove foreign matter.
7 Image transfer paper separator
fingers are damaged or dirty. YES Clean or change.
8 Fuser unit Fusing entrance guide plate is dirty
or damaged. YES Clean.
Change fuser unit.
9 Fusing paper separator fingers are
dirty. YES Clean.
10 The problem has been eliminated
through the checks of steps up to 9. NO Change printer control board
d-Color MF2400