Canon GP335 Service Manual page 524

CHAPTER 14 TROUBLESHOOTING
4 Reversal Feeding/Lower Feeding/Re-Pick-Up Assembly
Cause
Paper deflecting
plate drive
assembly
Reversal feeding
drive assembly
PS6, PS8, PS9
Duplexing/feeding
drive assembly
Guide plate
14-106
Step Check
1 Is the paper deflecting plate
(delivery flapper) of the delivery
assembly operating?
2 Is the operation of the reversal
feeder motor/roller normal?
3 Is the operation of the internal
delivery sensor (PS6), duplexing
assembly inlet paper sensor (PS8),
and re-pick up sensor (PS9) normal?
4 Is the duplexing feeding roller 1/2
rotating?
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Yes/No Action
NO Check the paper
deflecting plate drive.
YES Clean the reversal
feeding roller.
NO Check the drive
assembly.
NO Replace PS6, PS8, and
PS9 as necessary.
NO Check the duplexing
feeding drive assembly.
YES Check each guide plate
for foreign matter and
deformation.