Malfunction Troubleshooting - Canon SORTER S-82 Service Manual

CHAPTER 4
V. MALFUNCTION TROUBLESHOOTING
N-1 No power
<Possible causes>
1. No POWER-ON signal is input due to poor contact in interface connector.
Action: Reconnect the interface connector.
2. Blown fuse
Action: Remove the power supply unit and replace the fuse.
3. Overcurrent/overvoltage protective circuits have been activated.
Action: Turn OFF the power, reconnect the power connector correctly, and then turn ON
the power again. If the problem persists, find out the cause of the activation of the
overcurrent/overvoltage protective circuits. Wait for more than 2 minutes before
turning ON the power again.
4. Defective power supply unit
Action: Turn OFF the printer and then disconnect the connector J10 from the power sup-
ply unit. Turn ON the printer and measure the output of the DC power source cir-
cuit of the connector J10, taking care to avoid short circuit. If specified output is
not obtained, replace the power supply unit.
5. Wiring, DC load and sorter driver PCB
Action: Turn OFF the printer and check the wiring and DC load ahead of the sorter driver
PCB. If no problem was found with wiring and DC load, replace the sorter driver
PCB.
N-2 Feed motor failure
<Possible causes>
1. Poor contact in feed motor drive signal line
Action: Reconnect the connector J501 on the feed motor and the connector J1 on the sorter
driver PCB.
2. Defective feed motor
Action: Replace the feed motor.
3. Defective sorter driver PCB
Action: Replace the sorter driver PCB.
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