Filter
Top Products
COPYRIGHT
©
1998 CANON INC. CANON NP7161/NP7160 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
10–23
4. Checking the Photointerrupters
The copier allows you to use its service mode when checking its photointerrupters. (You may
also use a conventional meter.)
a. Using a Meter
1) Put the copier in standby state.
2) Set the range of the meter to 30 VDC.
3) Connect the - probe of the meter to J105-5 (GND) of the DC controller PCB.
4) Connect the + probe of the meter to the appropriate terminal on the DC controller PCB
indicated in the tables that follow.
5) Make checks as instructed.
b. Using Service Mode
1) Press the User Mode key.
2) Press ‘2’ and ‘8’ of the keypad at the same time. (Hold them down for 0.5 sec or more.)
3) Press the User Mode key once again.
• The copier starts service mode, and indicates ‘1’ on the copy count indicator.
4) Press ‘2’ and then the AE in sequence.
• The copier starts I/O DISPLAY mode, and indicates ‘201’.
5) Enter the appropriate service mode No. indicated in the tables that follow, and press the Start
key.
6) Make checks as instructed.
• Refer to the state of the copy count indicator LEDs. (Tables use ‘1’ to indicate ON, and ‘0’
to indicate OFF.)
Figure 10-228
1a
1g
1b
1c
1f
1e
1d
2a
2b
2c
2d