Canon NP6251 Service Manual page 587

CHAPTER 11 TROUBLESHOOTING
Sensor
PS1
Scanner HP
sensor
PS3
Scanner original
leading edge 2
sensor
PS4
Scanner original
leading edge 2
sensor
PS5
Copyboard cover
open/closed
sensor
PS6
Lens XHP sensor
PS7
Lens YHP sensor
PS8
Holding tray
feeding assembly
1 paper sensor
PS9
Holding tray
feeding assembly
2 paper sensor
11-56
COPYRIGHT © 1997 CANON INC.
Connector No.
*2* address
J111A-2 Move the
scanner by
P007-03
hand while
in standby.
J111A-5 Move the
scanner by
P107-6
hand while
in standby.
J111A-8 Move the
scanner by
P002-04
hand while
in standby.
J112A-4 Move the
copyboard
P007-02
cover by
hand while
in standby.
J110A-8 Put paper
over PS6
P102-02
while in
standby.
J110B-2 Put paper
over PS7
P102-03
while in
standby.
J119A-4 Insert paper
in the
P002-04
detecting
lever
assembly of
PS8 while
in standby.
Insert paper
J113B-12
in the
P002-03
detecting
lever
assembly of
PS9 while
in standby.
Checks
When the light-block-
ing plate is at PS1.
When the light-block-
ing plate is not at PS1.
When the light-block-
ing plate is at PS3.
When the light-block-
ing plate is not at PS3.
When the light-block-
ing plate is at PS4.
When the light-block-
ing plate is not at PS4.
When the cover is
closed.
When the cover is
opened.
When paper is not
over PS6.
When paper is over
PS6.
When paper is not
over PS7.
When paper is over
PS7.
When paper is
inserted.
When paper is
removed.
When paper is
inserted.
When paper is
removed.
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
*2*
Voltage
notation
1 5V
0 0V
0 5V
1 0V
0 0V
1 1V
1 5V
0 0V
0 0V
1 5V
0 0V
1 5V
1 5V
0 0V
1 5V
0 0V