The Output Has Poor Sharpness (Out Of Focus) - Canon iR1200 Series Service Manual

CHAPTER 7 TROUBLESHOOTING

3.1.18 The output has poor sharpness (out of focus).

General conditions
1) Execute 'PRINT test'. Is the output image normal? (See 3.21.5 of
YES: Go to step 5).
NO:
Sharpness setting
2) Change the setting of 'SHARPNESS' under 'COPY SETTINGS' on
YES: End.
High-voltage contact (high-voltage spring and DC controller PCB; J205, J207, J209)
3) Is the high-voltage spring used to supply high voltage to the car-
High-voltage contact (high-voltage spring; J205, J207, J209 on DC controller PCB)
4) Is the connection between the high-voltage spring and the connec-
NO:
Drum unit (primary charging roller, photosensitive drum), Developing cylinder, Transfer
charging roller, Contact sensor drive rail
5) Is the problem noted at specific intervals?
YES: Identify the cause by referring to T07-301-01, and replace it. (If
NO:
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COPYRIGHT © 2002 CANON INC.
Chapter 2.)
Go through steps 2) and 5).
the user mode menu. Is the problem corrected?
tridge soiled? (Remove the cartridge to check.)
tors (J205, J207, J209) on the DC controller PCB normal?
Correct the connection. If the problem is not corrected, replace the
faulty part.
the machine has the ADF, the ADF need not be removed.)
Check the surface of the contact sensor drive rail for foreign mat-
ter; if there is any, remove it. If it is solenoid, clean it with alcohol,
and then apply a small amount of lubricant (MOLYKOTE EM-
50L).
2000 2000 2000 2000 CANON iR1200/iR1300 Series REV. 0 AUG. 2002