The Output Has Poor Sharpness (Out Of Focus) - Canon SmartBase 1270D Service Manual

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:
Cartridge (primary charging roller, developing cylinder, photosensitive drum), 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 it
NO:
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.
is the primary charging roller, developing cylinder, or photosensi-
tive drum, replace the cartridge.)
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.
2000 2000 2000 2000 CANON SmartBase PC1210D/1230D/1270D REV. 1 MAR. 2002
CHAPTER 7 TROUBLESHOOTING
7-33