Checking The Sensor Output; Manual Feed Registration - Canon DADF-J1 Service Manual

1.3.4 Checking the Sensor Output

The DADF uses a 7-segment LED (LED2) on its ADF controller PCB to allow a check on
the presence/absence of paper or the state (open/closed) of the upper cover of the following
sensors:
LED2 Sensor in question
Original sensor (S6)
(1)
Original trailing edge sensor
(2) (S7)
Separation sensor (S4)
(3)
Skew sensor (S5)
(4)
Pre-registration roller paper
(5) sensor(S2)
Post-registration roller paper
(6) sensor (S3)
1) Remove the ADF controller cover, and
set the DIP switch (SW1) on the ADF
controller PCB as indicated (normal op-
eration mode).
COPYRIGHT © 2001 CANON INC.
(notation)
T05-103-09
2000 2000 2000 2000 CANON DADF-J1 REV.0 MAR.2001
CHAPTER 5 TROUBLESHOOTING
LED2 Sensor in question
Reversal sensor (S1)
(7)
Manual feed registration roller
(8) paper sensor (S9)
Pre-last original paper sensor
(9) (S8)
Pre-reversal sensor (PI4)
(a)
Original paper sensor (PI13)
(b)
Manual feed set sensor (PI12)
(c)
ADF closed/open sensor
(d) (PI10)
Upper cover sensor
(e) (front; PI6)
Upper cover sensor
(f) (rear; PI3)
ADF controller cover
Screw
F05-103-13
F05-103-14
(notation)
5-39