Canon CP660 Service Manual page 195

2. Reversing Assembly Stationary Jam
The duplexing driver PCB will identify a reversing assembly stationary jam if the paper
does not move past the reversal paper sensor (PS26) within a specific period of time aft
the duplexing flaper solenoid has turned on.
Duplexing flapper solenoid
drive signal
Jam check
Reversal paper sensor
Duplexing motor
T1 = about 3.2 sec for A4 (horizontal), about 6.3 sec for LDG.
3. Duplexing Feeding Assembly Delay Jam
The duplexing driver PCB will identify a duplexing feeding assembly delay jam if the
paper does not reach the duplexing unit paper sensor (PS24) within a specific period of
time after the paper has moved past the reversal paper sensor (PS26).
Reversal paper sensor
Jam check
Duplexing unit paper sensor
Duplexing motor
T2 = about 1.7 sec for A4R, about 2.4 sec for 11x17.
COPYRIGHT © 1999 CANON INC.
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(unit: sec)
COPY
T1
Normal
CCW
Figure 5-503
(unit: sec)
COPY
T2
Normal
CCW CW
figure 5-504
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 5 PICK-UP/FEEDING SYSTEM
COPY
T1
CW
COPY
T2
CCW
(unit: sec)
Error
(unit: sec)
Error
CW
5-33