Canon NP6621 Service Manual page 151

5. Pre-Registration Delay Jam (vertical path roller)
Copy paper does not reach the pre-registration sensor (PS6) within a specific time after it has reached the
vertical path roller 1 paper sensor (PS16).
Cassette 2 pick-up clutch (CL5)
Jam check
Vertical path roller 2 paper sensor
(PS12)
Main motor (M1)
6. Pre-Registration Timing Jam (vertical path roller)
Copy paper reaches the pre-registration sensor (PS6) before a specific time after it has reached the vertical
path roller 1 paper sensor (PS16).
Cassette 2 pick-up clutch (CL5)
Jam check
Vertical path roller 2 paper
sensor (PS12)
Main motor (M1)
COPYRIGHT © 1998 CANON INC.
Copy Start key
ON
STBY INTR
1.0 sec
Normal
Figure 3-448 Sequence of Operations
Copy Start key
ON
STBY INTR
0.8sec
Normal
Figure 3-449 Sequence of Operations
CANON NP6621 REV.0 FEB. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
OPERATIONS AND TIMING
JAM flashed
SRFW SCRV SRFW
1.0 sec
Error
JAM flashed
SRFW SCRV SRFW
0.8sec
Error
3–95