Samsung ML-451 Series - Page 143

4.AlignmentandTroubleshooting
►ErrorCode
A3–3312
►Errormessage
ActuatorSensorFailure#A3-3312
►Symptom
Theexternaltemperaturesensorhasdetectedtheabnormalvalue.
►Troubleshootingmethod
1)Turnoffthemachineoffthenon.
2)Enterthetechmode.Checktheoutputofthetemperaturesensor.
3)Checktheharnessconnectionbetweenthetemperaturesensor(S1)andthemainboard.
4)IftheharnessisOK,checktheNo.4pinvoltageofthesensor.(Normalrange:0~2V)
5)Ifthevalueis3.3V ,replacethesensor.
6)Ifthevalueisinnormalrange,replacethemainboard.
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