Canon DADF-J1 Service Manual page 98

The following shows jam codes, jam types, related sensors, and conditions of detection:
Jam code
DADF Copier
J-1A 001A
(1st original)
J-11 0011
J-1D 001D
(1st original)
J-12 0012
J-13 0013
J-1E 001E
(1st original)
J-14 0014
J-1B 001B
(1st original)
J-15 0015
J-1F 001F
(1st original)
J-16 0016
J-19 0019
COPYRIGHT © 2001 CANON INC.
Jam type Related
sensor
Post-pickup origi- S4
nal skew S5
Pickup fault 1 S1
Pickup fault 2 S3
S2
S3
S2
Reversal delay S1
Reversal pickup S4
trailing edge skew S5
Reversal pickup PI4
fault
Residual original S1
T02-301-01
2000 2000 2000 2000 CANON DADF-J1 REV.0 MAR.2001
CHAPTER 2 OPERATIONS AND TIMING
Conditions of detection
At time of pickup, the discrepancy in the
timing of detection of the trailing edge of the
original between the separation sensor and
the skew sensor is 25 mm or more in terms
of feed length.
At time of pickup up, the reversal sensor de-
tects paper.
At time of pickup, the reversal sensor detects
paper.
At time of pickup, the post-registration paper
sensor detects an original before the reversal
motor (M1) goes on.
At time of pickup, the pre-registration paper
sensor does not detect an original although
an original is assumed to have been moved
over a specific distance.
At time of pre-reversal, the post-registration
roller sensor detects an original before the
reversal motor (M1) goes on.
At time of reversal, the pre-registration roller
paper sensor does not detect an original after
an original is assumed to have been moved
over a specific length.
At the start of reversal, the reversal sensor
does not detect an original although an origi-
nal is assumed to have been moved over a
specific distance (104 mm).
At time of pre-reversal, the discrepancy in
the timing of detection of the trailing edge of
an original between the separation sensor
and the skew sensor is 10 mm or more in
terms of feed length.
At time of reversal, the pre-reversal sensor
detects an original after an original has been
moved over a specific distance.
Prior to pickup, the reversal sensor detects
an original when the belt motor is driven for
a specific amount.
2-75