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Field Service Ver. 2.0 Jul. 2009
22. IMAGE QUALITY PROBLEM
867
TROUBLESHOOTING
22.3.5
Scanner system: blurred image, blotchy image
A. Typical faulty images
B. Troubleshooting procedure
A02EF4C511DA
Step
Section
Check item
Result
Action
1
Original
Original does not lie flat.
YES
Change original.
2
ADF
ADF does not lie flat.
YES
Change ADF if it is deformed or
hinges are broken.
3
Original glass
Original glass tilts.
YES
Position original glass correctly.
Check original loading position.
4
2nd/3rd mirrors
carriage
Exposure unit is not aligned with
the 2nd/3rd mirrors carriage.
YES
Perform “Focus Positioning of the
scanner and 2nd/3rd mirrors car-
riage” and “Scanner Position
Adjustment.”
5
The problem has been eliminated
through the checks of steps up to 4.
NO
Change exposure unit.
Change CCD unit.
Y110571-1 Service Manual
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...