CHAPTER 11 TROUBLESHOOTING11-53COPYRIGHT © 1997 CANON INC. CANON NP6560/NP6360/NP6260 REV. 0 NOV. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)6. Checking the PhotointerruptersYou can check the machine’s photointerrupters either with a conventional meter orthe machine’s service mode.a. Using a Tester1) Set the meter to the 30VDC range.2) Connect the – probe of the meter to GND on the DC controller PCB.3) Connect the + probe to the terminals (DC controller PCB) shown in the table.4) Make checks as instructed.b. Using Service Mode1) Open the front door, and insert the door switch actuator into the door switchassembly.2) Press the service switch with a clip over the cover.3) Press , , and in sequence on the control panel.4) Using the keypad on the control panel, enter the address of each photointerrupter;then, check the reading.Caution:The machine’s motors may start to operate when you turn on or off the sensors;exercise extra caution.]2]
