Problem Checking And Method Of Pcb - Samsung WF306LAW/XAA Service Manual

6-2. 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.
倫 倫 倫 倫 CNw CNw CNw 塁 塁 塁 塁 CNw 倫 倫 倫 倫 CN2
枴 枴 枴 枴 C C C C N4 N4 N4 藍 藍 藍 藍 N4
�- �- �- �- CN3 CN3 CN3 �c 吏 吏 吏 CN3
Thermistor Check
Check Voltage at Pin #6 and #3 of CN3
Tester Check = DC2.5V
If it reads 5V, check if its connector is engaged properly.
Door Switch Check
Check Voltage at Pin #6 and #4 of CN3
When Door Open = DC5V
When Door Close = DC0V
Water Sensor Check
Check Voltage and Frequency at Pin #6 and #7 of CN3
Reset water level = DC2.5V, 25.8KHz
Check Voltage and Frequency at Pin #6 and #8 of CN3
Reset water level = DC2.5V, 25.8KHz
Sump Sensor Check
Check Voltage at Pin #4 and #2 of CN8
Tester Check = DC0V or 3.75V
Check Voltage at Pin #4 and #3 of CN8
Tester Check = DC0V or 3.75V
Motor Check
Resistance at Pin #1 and #2 of CN9 =11.6Ω
Resistance at Pin #1 and #3 of CN9 =11.6Ω
Resistance at Pin #2 and #3 of CN9 =11.6Ω
6-6
CN2 塁 塁 塁 塁 CN2 CN2
卵 卵 卵 卵 CN8 CN8 柩 柩 柩 柩 CN8 CN8
枸 枸 枸 枸 柝 柝 柝 柝
濫 濫 濫 濫 卵 卵 卵 卵
CNw0 CNw0 CNw0 CNw0
欄 欄 欄 欄 CN9 CN9 CN9 卵 卵 卵 卵 CN9
卵 卵 卵 卵 RY9 RY9 嵐 嵐 嵐 嵐 RY9 RY9
Door Lock Check
Check Voltage at Pin #1 of CN5 and Pin #7 of CN10
When Door Lock = AC120V
Check Voltage at Pin #1 of CN5 and Pin #2 of CN7
When Door Lock = AC120V
Door Unlock Check
Check Voltage at Pin #1 of CN5 and Pin #8 of CN10
When Door Unlock = AC120V
Drain Motor Check
Check Voltage at Pin #1 of CN5 and Pin #6 of CN10
When Drain Pump operates = AC120V
Water Valve Check
Check Voltage at Pin #1 of CN5 and Pin #1,2,3,4 of CN10
When each Valve operates = AC120V
AC Power Check
Check Voltage at Pin #1 and #3 of CN5
Check Voltage at Pin #1 of CN5 and Pin #1 of CN6
Tester Check = AC120V
Heater Relay Check
Check Voltage at Pin #1 of CN5 and Pin #2 of RY9
When Heater Relay operates = AC120V
欄 欄 欄 欄 CN5 CN5 卵 卵 卵 卵
CN5 CN5
嵐 嵐 嵐 嵐
CN7 CN7 CN7 CN7
卵 卵 卵 卵