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22. IMAGE QUALITY PROBLEM
Field Service Ver. 2.0 Jul. 2009
870
TROUBLESHOOTING
22.3.8
Scanner system: skewed image
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C514DA
AA
Step
Section
Check item
Result
Action
1
Original
Original is skew.
YES
Reposition original.
2
Original glass
Original glass is in positive contact
with the flat spring without being tilt.
NO
Reinstall the glass.
Check the original loading posi-
tion.
3
2nd/3rd mirrors
carriage
Exposure unit is not properly
aligned with 2nd/3rd mirrors
carriage.
YES
Perform “Focus Positioning of the
scanner and 2nd/3rd mirrors car-
riage” and “Scanner Position
Adjustment.”
4
The problem has been eliminated
through the checks of steps up to 3.
NO
Change exposure unit.
Change CCD unit.
Service Manual Y110571-1
Summary of Contents for d-color MF651
Page 1: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 24: ...MEASURES TO TAKE IN CASE OF AN ACCIDENT S 22 Blank Page...
Page 27: ...d Color MF651 d Color MF551 d Color MF451 Color Printer SERVICE MANUAL Code Y110571 1...
Page 1053: ...UPDATING STATUS DATE UPDATED PAGES PAGES CODE 10 2009 1ST EDITION 1053053 Y110571 1...