Samsung RFG237AA Service Manual

Also see for RFG237AA: User manual Quick start guide Specifications User manual Manual de usuario

Contents

87TROUBLESHOOTING4-2-11. If Pantry Panel PCB is not working normallyYou should check the display after door opening because the display of this model operates only whenthe fresh food compartment door is opened.StartDoes fresh foodcompartment door switchoperate normally?Is the connector ofpantry room in fresh foodcompartment insertedcorrectly?Is MAIN PCBConnector (CN51), CN79inserted correctly?Is signal ofMAIN PCB CN51, CN79normal?Is the lightingoperated when replace PantryPanel-PCB?Is a key pressedcontinuously?Is the PCB systemstill operated by separatingof the mechanism?Is the lighting operatedafter replacing the PantryPanel-PCB?Is a normal voltageoutputted from MAIN PCB IC51, CN79during the key operating?Check and repair the switch* Refer toReinsert Connector,Repair bad contactReinsert connector in MAIN PCBCheck voltage/Replace MAIN PCBPanel PCB itself has trouble.Reassemble PCB ASS'Y /Enforce the cancelation ofpressed keysReassemble PCB ASS'Y /Enforce the cancelation ofpressed keysConvertible compartment PanelPCB itself has trouble.˝ Replace MAIN PCB˞ Check the short of MAINPanel wire˝ Check the wires of Pantry Room - disconnection, short between wires˞ Recheck the control circuit of MAIN PCB Pantry Panel˟ Check the wire assembling between Panel and MAIN˝ Check the wire of Pantry Room - disconnection, shortbetween wires˞ Check the short/open of the pantry panel lightingcircuit in MAIN PCB.˞ If Panel PCB Key is not selectedIf Panel Key is not selected If it is not repaired with the above basic checking methodTypical PCB GroundREG1 Heater Sinkó Checking method of voltage Based onPCB typical Ground REG1 Heater Sink1) Key voltage ; CN51#6"(Purple)2) LED part voltage ; CN51-"1"(Yellow),"2"(Pink),"3"(Orange) ª Voltage of CN51is same as IC50 #14,#13,#12 voltage.1) select(operating) (0V) 2) normal(about5.0V 0.5V)- Display On (0.7V0.5V) - Display Off (11V1V)