COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR2200/iR2800/iR3300 REV.0 MAR. 2001CHAPTER 4 TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS4-28 T4 Troubleshooting Malfunctions4.1 Power Supply System4.1.1 The AC power is absent.1. Initial checks[1] Is the power plug connected to the power outlet?[2] Is the rated AC voltage present at the power outlet?[3] Has the leakage breaker gone ON?2. Switch PCB, Wiring, ConnectorIs the resistance 0 Ω when the switch is turned on and ∞Ω when it is turnedoff?NO: Replace the switch PCB.YES: Check the AC power line (power cord, leakage breaker, switchPCB, main power supply PCB (J6)) for poor wiring (i.e., electricalcontinuity); check the connectors for poor contact.