Canon iR8500 Service Manual page 474

Sensor
PS49
Vertical path 2
paper sensor
PS51
Deck (right) paper
level middle sensor
PS52
Deck (right) paper
level high sensor
PS54
Deck (left) paper
level middle sensor
PS55
Deck (left) paper
level high sensor
PS56
Manual feed tray
cover open/closed
sensor
PS58
Left inside cover
open/closed sensor
PS59
Toner cartridge
cover open/closed
sensor
PS101
Original sensor
PS102
Scanner HP sensor
PS103
Copyboard cover
sensor
COPYRIGHT© 2001 CANON INC.
Connector
I/O address
J516-B9 In standby, move the de-
P001-5 tecting lever by hand.
J513-B9 In standby, move the de-
P004-4 tecting lever by hand.
J513-B12 In standby, move the de-
P004-5 tecting lever by hand.
J514-B9 In standby, move the de-
P004-6 tecting lever by hand.
J514-B12 In standby, move the de-
P004-7 tecting lever by hand.
J502-A2 In standby, move the de-
P005-10 tecting lever by hand.
J502-B2 In standby, move the de-
P005-8 tecting lever by hand.
J512-B2 In standby, move the de-
P005-12 tecting lever by hand.
R>J5006-1 Place an original on the
IO-P4-6 copyboard.
R>J5012-3 Move the No. 1 mirror base
IO-P6-4 by hand.
R>J5012-6 Move the sensor lever by
IO-P6-7 hand.
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
Checks
T06-210-05
CANON iR8500/7200 REV.1 AUG. 2001
When the light-block-
ing plate is at PS49.
When the light-block-
ing plate is not at PS49.
When the light-block-
ing plate is at PS51.
When the light-block-
ing plate is not at PS51.
When the light-block-
ing plate is at PS52.
When the light-block-
ing plate is not at PS52.
When the light-block-
ing plate is at PS54.
When the light-block-
ing plate is not at PS54.
When the light-block-
ing plate is at PS55.
When the light-block-
ing plate is not at PS55.
When the light-block-
ing plate is at PS56.
When the light-block-
ing plate is not at PS56.
When the light-block-
ing plate is at PS58.
When the light-block-
ing plate is not at PS58.
When the light-block-
ing plate is at PS59.
When the light-block-
ing plate is not at PS59.
Paper is present,
Paper is absent,
Light-blocking plate is
present,
Light-blocking plate is
absent,
Copyboard (ADF) is
closed,
Copyboard (ADF) is
opened,
Vol-
I/O
tage
1 5 V
0 0 V
1 5 V
0 0 V
−
5 V
−
0 V
1 5 V
0 0 V
−
5 V
−
0 V
1 5 V
0 0 V
1 5 V
0 0 V
1 5 V
0 0 V
0 0 V
1 5 V
1 5 V
0 0 V
1 5 V
0 0 V
6-71