Canon SmartBase 1270D, Руководство по обслуживанию

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COPYRIGHT © 2002 CANON INC. 2000 2000 2000 2000 CANON SmartBase PC1210D/1230D/1270D REV. 1 MAR. 2002
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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
Chapter 2.)
YES: Go to step 5).
NO:
Go through steps 2) and 5).
Sharpness setting
2) Change the setting of ‘SHARPNESS’ under ‘COPY SETTINGS’ on
the user mode menu. Is the problem corrected?
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-
tridge soiled? (Remove the cartridge to check.)
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-
tors (J205, J207, J209) on the DC controller PCB normal?
NO: Correct the connection. If the problem is not corrected, replace the
faulty part.
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
is the primary charging roller, developing cylinder, or photosensi-
tive drum, replace the cartridge.)
NO: 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.