Canon GP405 Service Manual page 253

The copiers' DC-CPU identifies a jam under the following conditions:
1. Paper is blocking the deck feed sensor (PS106) when the copier is turned on, at the end of
the wait-up state, or during the standby state.
2. Deck Pick-Up/Vertical Path Delay Jam
Deck pick-up clutch
(CL102)
Jam check
Deck pick-up sensor
(PS101)
Deck feed sensor
(PS106)
Deck main motor
(M101)
COPYRIGHT © 1999 CANON INC. CANON 405/335 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Copy Start key
ON
INTR
Normal
Figure 8-202
Jam indicator
SCAN
CHAPTER 8 PAPER DECK
PRINT
Error
8-19