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Field Service
V
er. 1.0 Apr. 200
8
16. Image quality problems
223
bizhub C31P
T
roubleshooting
16.1.3
Uneven density in sub scan direction
A. Typical faulty images
B. Troubleshooting procedure
A0EAF4C503DA
Step
Section
Check item
Result
Action
1
Adjustment
/Setting
The printer is being operated at
high altitude.
YES
Adjust the image with “IMAGE
ADJ PRAM”
→
SER
V
ICE MENU/ALIGN-
MENT/IMAGE ADJ PRAM
2
Imaging unit
Are there scratches or lines evi-
dent on photo conductor surface?
YES
Change the imaging unit.
3
Is the outside dirty?
YES
Clean.
4
PH unit
Is the window surface dirty?
YES
Clean.
5
Transfer belt
Is the transfer belt dirty or
scratched?
YES
Wipe the surface clean of dirt with
a soft cloth. Change a scratched
transfer belt for a transfer belt.
6
Is the terminal dirty?
YES
Clean.
7
Is the transfer roller dirty or
scratched?
YES
Change the transfer roller.
8
Has the problem been eliminated
through the checks of steps up to
7?
NO
Change the transfer belt unit.
Change the PH unit.
Change the high voltage unit/1.
Change the high voltage unit/2.
Summary of Contents for Bizhub-C31P
Page 1: ...SERVICE MANUAL 2008 04 2008 04 Ver 1 0 Ver 1 0 FIELD SERVICE ...
Page 3: ...ii Blank Page ...
Page 25: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 22 Blank Page ...
Page 28: ...SERVICE MANUAL 2008 04 Ver 1 0 FIELD SERVICE Main body ...
Page 286: ...SERVICE MANUAL 2008 04 Ver 1 0 FIELD SERVICE Lower Feeder Unit ...
Page 309: ...6 Jam display Field Service Ver 1 0 Apr 2008 20 Lower Feeder Unit Troubleshooting Blank Page ...
Page 310: ...SERVICE MANUAL 2008 04 Ver 1 0 FIELD SERVICE Duplex Option ...
Page 315: ...1 Product specifications Field Service Ver 1 0 Apr 2008 2 Duplex Option General Blank Page ...
Page 327: ...3 Jam display Field Service Ver 1 0 Apr 2008 14 Duplex Option Troubleshooting Blank Page ...
Page 328: ...SERVICE MANUAL 2008 04 Ver 1 0 FIELD SERVICE Staple Finisher ...
Page 335: ...1 Product specifications Field Service Ver 1 0 Apr 2008 4 Staple Finisher General Blank Page ...
Page 353: ...2 Other Field Service Ver 1 0 Apr 2008 22 Staple Finisher Maintenance Blank Page ...
Page 365: ...4 Error codes Field Service Ver 1 0 Apr 2008 34 Staple Finisher Troubleshooting Blank Page ...