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Samsung SL-M4580FX - Page 165

Samsung SL-M4580FX
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4.Troubleshooting
•LSUfan:JC31–00086A
•Devefan:JC31–00086A
b)If24Vpowerisnotgenerated,
•Measurethe24VpowerontheSMPSboard.IftheSMPSboard(JC44-00092C(220V)/JC44-00091C
(110V))isdefective,replaceit.
•IftheSMPSboardisnormal,replacethemainboard(JC92–02722A).
5)Ifthefanoperationisnormalbuttheerrorpersists,
a)ChecktheyellowlinesignalwithDVM.
b)Checkfanoperationasconnectedordisconnected.
•IftheLocksignalis0Vcontinually,checktheharness.IftheharnessisOK,replacethemainboard.
•Ifthesignalvalueisdifferentfromthetableabove,replacethefan.
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