Figure 6-1114. Motor Error Rotation Detection CircuitThe motor error rotation detection circuit checks for an error (suspension of rotation)in relation to the scanner motor (M3), RDF belt motor, and scanner original leading edgesensor 2 (PS4).In response to the motor error OFF detection signal (ENCODER ERROR), the gatearray resets the DC controller PCB.Figure 6-112RDF DC controller PCBM3M3M3drivecircuitM3drivecircuitPS4To RDFDetectioncircuitGatearrayResettingICMasterCPUENCODERERRORResettingErrorDC controller PCBGatearrayOverheatingdetectedH1H1H2TH1TH2MasterCPUACdriverPCBACdriverPCBTimerMain heater ONSub heater ONMainSubSSR ONSSRACTIVEFUSERTEMPERROR100/120V220/240VPower supplyswitch OFFOverheatingopen circuitdetection+12VSubthermistorMain thermistorCOPYRIGHT © 1997 CANON INC. CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 6 FIXING SYSTEM6-17
