Checking The Photointerrupters - Canon iR5000 Service Manual

10. Checking the Photointerrupters

The machine's photointerrupters may be checked by means of a meter or service mode.
10.1 Using a Meter
1) Set the meter range to 300 VDC.
2) Connect the - probe of the meter to the GND terminal of the PCB to check.
3) Connect the + probe of the meter to the terminals indicated.
4) Make checks as instructed.
10.2 Using Service Mode
1) Enter service mode, and select I/O.
2) Bring up the I/O address to check, and make checks as indicated.
Turning on and off the sensor can turn on the machine's motors. Take full
care.
10.3 Check List
Guide to Connector No.
D: DC controller PCB
R: reader controller PCB
Reader Unit (service mode: COPIER>I/O>R-CON)
Sensor
PS39
Scanner HP sensor
PS40
Copyboard cover sensor
PS43
Original sensor
COPYRIGHT © 2000 CANON INC.
Download Free Service Manual at http://printer1.blogspot.com
CHAPTER 3 STANDARDS AND ADJUSTMENTS
Connector No. Checks
I/O address
R>J5012-2 Move the No. 1 mirror base
IO-P6-4 by hand.
R>J5012-5 Move the sensor lever by hand.
IO-P6-7
R>J5006-2 Place an original on the copyboard. Paper
IO-P4-6
T03-1003-01
2000 2000 2000 2000 CANON iR5000/iR6000 REV.0 JULY 2000
I/O
display display
Light-blocking Present 1
plate Absent 0
Copyboard Closed 1
(ADF) Open 0
Present 0 0V
Absent 1
3-43 T
Voltage
5V
0V
5V
0V
5V