Checking The Photointerrupters - Canon ImageRunner iR8500 Series Service Manual

Chapter 14
Paper is at PS20: 1 (5 V)
Paper is not at PS20: 0 (0 V)
<Sensor>
Left deck pickup sensor (PS25)
<Connector No.>
J518-A9
<I/O address>
P010-1
<Checks>
Put paper over PS25 in standby.
Paper is at PS25: 1 (5 V)
Paper is not at PS25: 0 (0 V)
<Sensor>
Left deck feed sensor (PS26)
<Connector No.>
J519-B16
<I/O address>
P010-9
<Checks>
Put paper over PS26 in standby.
Paper is at PS26: 1 (5 V)
Paper is not at PS26: 0 (0 V)
<Sensor>
Right deck feed sensor (PS27)
<Connector No.>
J511-B10
<I/O address>
P010-8
<Checks>
Put paper over PS27 in standby.
Paper is at PS27: 1 (5 V)
Paper is not at PS27: 0 (0 V)
<Sensor>
Cassette 3 pickup sensor (PS37)
<Connector No.>
J515-B6
<I/O address>
P010-2
<Checks>
Put paper over PS37 in standby.
Paper is at PS37: - (5 V)
Paper is not at PS37: - (0 V)
<Sensor>
Vertical path 3 paper sensor (PS41)
<Connector No.>
J515-B10
<I/O address>
P010-6
<Checks>
Put paper over PS41 in standby.
Paper is at PS41: 1 (5 V)
Paper is not at PS41: 0 (0 V)
<Sensor>
Cassette 4 pickup sensor (PS42)
<Connector No.>
J517-B6
<I/O address>
P010-3
<Checks>
Put paper over PS42 in standby.
Paper is at PS42: 1 (5 V)
Paper is not at PS42: 0 (0 V)
<Sensor>
Vertical path 4 paper sensor (PS46)
<Connector No.>
J517-B10
<I/O address>
P010-7
<Checks>
Put paper over PS46 in standby.
Paper is at PS46: 1 (5 V)
Paper is not at PS46: 0 (0 V)
<Sensor>
Image write start sensor (PS60)
<Connector No.>
J503-B8
<I/O address>
14-54
P002-5
<Checks>
Put paper over PS60 in standby.
Paper is at PS60: 1 (5 V)
Paper is not at PS60: 0 (0 V)

14.7.24 Checking the Photointerrupters

iR85+
The machine's photointerrupters may be checked by a conventional
meter or its service mode:
a. Using a Meter
1) Set the meter range to 30 VDC.
2) Connect the - probe of the meter to GND of the DC controller PCB.
3) Connect the + probe of the meter to the terminals (DC controller
PCB) indicated in the following table.
4) Make checks as instructed.
b. Using Service Mode
1) Start service mode (COPIER>I/O), and check the appropriate
address.
Turning on/off a sensor can start the machine's motor or the like. Take
full care.
<Sensor>
Registration paper sensor(PS5)
<Connector>
J509-A2
<I/O address>
P001-11
<Checks/ I/O/ Voltage>
In standby, put paper over PS5.
When paper is not at PS5, 1(5V)
When paper is at PS5, 0(0V)
<Sensor>
Fixing claw jam sensor(PS6)
<Connector>
J508-B15
<I/O address>
P001-15
<Checks/ I/O/ Voltage>
In standby, put paper over PS6.
When paper is not at PS6, 0(0V)
When paper is at PS6, 1(5V)
<Sensor>
Fixing web length sensor(PS7)
<Connector>
J508-B2
<I/O address>
P003-3
<Checks/ I/O/ Voltage>
In standby, put paper over PS7.
When the web is present, 0(0V)
When the web is absent, 1(5V)
<Sensor>
Fixing web length warning sensor(PS8)
<Connector>
J508-B5
<I/O address>
P003-4
<Checks/ I/O/ Voltage>
In standby, put paper over the detecting lever of PS8.
When the No Web warning is issued, 1(5V)
When the No Web warning is not issued, 0(0V)
<Sensor>
Inside delivery sensor(PS9)
<Connector>
J508-A2
<I/O address>
P001-12
<Checks/ I/O/ Voltage>
In standby, put paper over the detecting lever of PS9.
When paper is put, 1(5V)
When paper is pulled, 0(0V)
0009-1598