Samsung WF405ATPASU-A2 - Manual (Page 20)

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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 CN5 = 12Ω
Resistance at Pin #2 of #3 of CN5 = 12Ω
Resistance at Pin #3 of #3 of CN5 = 12Ω
Door Lock Check
Check AC Voltage at Pin #1 of CN6 and Pin #2
of CN6
When Door Lock = AC 120V
Drain Motor Check
Check Voltage at Pin #1 of RY1 and Pin #3 of CN1
When Drain Pump operates = AC 120V
Water Valve Check
Check Voltage at Pin #1 of RY1 and Pin
#6,7,8,9,10 of CN1
When Each Valve operates = AC 120V
AC Power Check
Check Voltage at Pin #1 of CN6 and #1 of RY1
When Set Power On = AC 120V
WASH Heater Relay Check
Check Voltage at Pin #1 of RY1 and Pin #2 of RY13
When Wash 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.
TROUBLE SHOOTING
To avoid risk of electrical shock, personal injury or death; disconnect power to washer
before servicing, unless testing requires power.
WARNING
WF405ATP-03144A-03_EN.indd 20 2013-1-28 18:42:00