82TROUBlESHOOTING4-2-10.WhenthePanelPCBdoesnotoperatenormally-ThereisaMICOMembeddedinthePanelPCB.So,takecarewhendoingrepairs.And,excepttheSolderTouch,replacethePCB.SinceallTouchisusedforthePanelPCBSwitch,besuretoturnofftheunitandturnitonagainafterdoingarepair.[ItistoadjustthesensitivityoftheTouchPanel.]① WhentheentireoracertainsectionofthePanelPCBdoesnotlightup② WhenthePanelPCBbuttonsdonotwork※Whenitkeepstroublingaftercheckwiththeaboveprocedures[Checkafterturningofftheunitandturningitonagain]StartIstheconnetorinsertionoffreezerupper-hingenomal?① ChecktheDispenserandtheTopCoverHingeConnectors.ChecktheWireCutandtheWireShort.② CheckthewireconnectionbetweentheFridgeTopCabinetandtheMainPCBConnector.ChecktheWireCutandtheWireShort.① ChecktheDispenserandtheTopCoverHingeConnectors.ChecktheWireCutandtheWireShort.② CheckthewireconnectionattheFridgeTopCabinet.ChecktheWireCutandtheWireShort.③ CheckShort/OpenatthePanelCommunication&thePowerSupplyCircuitoftheMainPCByesNoMAINPCBConnector(CN50)isinsertednormally?yesThe PanelPCBConnecterisconnectedproperly?yesWhenreplacingPanel-PCB,itlightsup?NOButtonsgetstuckbeingpresseddown?NOButtonsgetstuckbeingpresseddown?NOButtonsgetstuckbeingpresseddown?NORefertotheCircuitDiagramofthismanualortheWiringDiagramattachedatthebackoftheunit.InsertConnectoragainRepairthecontacttroubleNo InsertMAINPCBConnectoragainNo InsertConnectoragainRepairthecontacttroubleyes ReplacePanelPCByes Re-assemblePCBASS'yorcleartherestrictionyes Re-assemblePCBASS'yorcleartherestrictionyes ReplacePanelPCB
