Samsung WF501ANW Trouble Shooting Guide - PCB Component Checks; Sensor and Motor Checks; Valve and Relay Checks

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Hall Sensor Check
CheckVoltageatPin#4and#3ofCN3
TesterCheck=DC0Vor1.3V
CheckVoltageatPin#4and#2ofCN3
TesterCheck=DC0Vor1.3V
Motor Check
ResistanceatPin#1of#2ofCN8=12Ω
ResistanceatPin#2of#3ofCN8=12Ω
ResistanceatPin#3of#1ofCN8=12Ω
Door Lock Check
CheckVoltageatPin#1ofCN6andPin#5ofCN1
WhenDoorLock=AC120V
Drain Motor Check
CheckVoltageatPin#1ofCN6andPin#3ofCN1
WhenDrainPumpoperates=AC120V
Water Valve Check
CheckVoltageatPin#1ofCN6andPin#1,2,7,8,9of
CN1
WhenEachValveoperates=AC120V
AC Power Check
CheckVoltageatPin#1and#2ofCN6
CheckVoltageatPin#1CN2andPin#2ofRY1
WASH Heater Relay Check
CheckVoltageatPin#1ofCN6andPin#2ofRY13
WhenHeaterRelayoperates=AC120V
PROBLEM CHECKING AND METHOD OF PCB
- IfyoupluginthepowercordandturnPowerS/Won,memorizeddataisdisplayed.
Ifanydataisnotdisplayed,checkthefollowings.
Thermistor Check
CheckVoltageatPin#4and#5ofCN6
TesterCheck=DC1.6V
Ifitready5V,checkifitsconnectorisengaged
properly.
Water Sensor Check
CheckVoltageandFrequencyatPin#6and#5ofCN6
Resetwaterlevel=DC1.6V,26.0KHz
CheckVoltageandFrequencyatPin#7and#5ofCN6
Resetwaterlevel=DC1.6V,26.0KHz
TROUBLE SHOOTING
Toavoidriskofelectricalshock,personalinjuryordeath;disconnectpowertowasher
beforeservicing,unlesstestingrequirespower.
WARNING
(Technical information)WF501ANWX-03011B_EN.indd 17 2011-06-24 �� 6:20:25