2-45
CHAPTER 2 STANDARDS AND ADJUSTMENTS
Sensor
PS53
Y developing
assembly HP
sensor
PS55
Bk developing
assembly HP
sensor
PS57
Transfer drum
HP sensor
PS59
Transfer drum
cleaner HP
sensor
PS62
Multifeeder
tray open/
closed sensor
PS67
Fixing lower
cleaning belt
length sensor
PS68
Waste toner
case full
sensor
PS69
(Note)
Transparency
sensor
PS70
(Note)
Registration
sensor
PS71
(Note)
Pre-cleaning
paper sensor
PS101
Deck pickup
sensor
PS102
Deck paper
absent sensor
I/O
display
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
Connector No.
I/O address
J1016-A2
P00A-10
J1015-B3
P00A-11
J1002-A2
P009-1
J1002-B2
P009-2
J1017-B9
P004-6
J1004-B1
P006-2
J1027-B4
P006-6
J1013-B9
P001-6
J1013-B8
P001-8
J1007-B14
P00B-1
J5-B4
P001-4
J5-A4
P002-12
When at HP,
When not at HP,
When at HP,
When not at HP,
When at HP,
When not at HP,
When at HP,
When not at HP,
When the tray is
closed,
When the tray is
open,
When paper is
present over PS67,
When paper is absent
over PS67,
When paper is
present over PS68,
When paper is absent
over PS68,
When paper is
present over PS69,
When pepper is
absent over PS69,
When paper is
present over PS70,
When paper is absent
over PS70,
When paper is
present over PS71,
When paper is absent
over PS71,
When paper is
present over PS101,
When paper is absent
over PS101,
When paper is
present over PS102,
When paper is absent
over PS102,
Take measurements
during copying.
Take measurements
during copying
operation.
Take measurements
during copying.
Take measurements
during copying
operation.
Open and close the
tray during standby.
Put paper over PS67
while in standby.
Put paper over PS68
while in standby.
Take measurements
during copying
operation.
Take measurements
during copying
operation.
Take measurements
during copying
operation.
Put paper over PS101
while in standby.
Put paper over PS102
while in standby.
Voltage
reading
5V
0V
5V
0V
5V
0V
5V
0V
0V
4V
5V
0V
0V
5V
5V
0V
5V
0V
several V
0V
5V
0V
5V
0V
Checks
Note: The sensor detects paper after the LED of the sensor turns on; normally, ‘1’ is indicated,
since the LED is not ON.