Canon CP660 Service Manual page 347

5 Duplexing Unit
Cause Step
Rollers 1
(duplexing unit)
Feeding guide 2
Reversing 3
roller,
Duplexing
feeding roller
Drive gear 4
Sensor lever 5
COPYRIGHT © 1999 CANON INC.
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Checks
Are the rollers inside the duplexing
unit coated with paper lint or dust?
Is there foreign matter or burrs on
the feeding guide?
Is the reversing roller or the duplex-
ing feeding roller worn or deformed?
Is the drive gear worn or cracked?
Is any sensor lever damaged or
deformed?
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Yes/No Action
YES Remove the paper lint
and dust.
YES Remove any foreign
matter. If burrs are
found, replace the
feeding guide.
YES If worn or deformed,
replace the roller.
YES Replace the worn or
cracked gear.
YES Position the sensor
lever correctly so that it
moves smoothly. If
damaged or deformed,
replace it.
NO Replace the duplexing
unit.
10-65