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Samsung WA48H7400 Troubleshooting Manual page 6

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Hall Sensor Check
Check Voltage at Pin #4 and #3 of CN9
Tester Check = DC0.6V
Check Voltage at Pin #4 and #2 of CN9
Tester Check = DC0.6V
Motor Check
Resistance at Pin #1 of CN3 and GND
= 226㏀
Resistance at Pin #2 of CN3 and GND
= 226㏀
Resistance at Pin #3 of CN3 and GND
= 226㏀
Drain Motor_Pump Check
Check Voltage at Pin #3 of CN1 and Pin #5 of CN4
When Drain Pump operates = AC 120V
Water Valves/ Check
Check Voltage at Pin #3 of CN1 and Pin #1,2,3,4
of CN4 When Valves operates = AC 120V
Clutch-Motor
Check Voltage at Pin #3 of CN1 and Pin #8 of CN4
When Valves operates = AC 120V
AC Power Check
Check Voltage at Pin #1 and #3 of CN1
Tester Check = AC 120V
Door Lock Check
Check Voltage at Pin #3 and #5 of CN8
When Door Lock = DC 6.5V

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