Samsung DW80M9 Series Service Manual page 55

Check type Check code
1. Check the connections for the Power Relay connector
2. Check the door switch.
Power Relay
None
check code
3. Check the driving signals for the power relay : Measure the voltage
4. Check the operation of the Power Relay.
Checking method
: Start the cycle by pressing the Power key. when measure the operating
voltage between the wires of the Power Relay and pin 1 wires of the
CN101.
Caution
Check the pin of the wires of the Power Relay and the Heater Relay.
► Normal: 110V ~ 120V
: Check the white wire and the switch connected to the white wire.
► When the door is open: The Door Switch is OFF.
► When the door is closed: The Door Switch is ON.
The Power Relay and the Heater Relay use a 12V line.
If the switch is out of order, the Power Relay and the Heater Relay will not
operate.
between pin 7 and pin 2 of the CN402 connector on the main PBA.
► When the door is open or before the cycle starts.
Normal: 1 V
► After the cycle has started by closing the door and pressing the Power
key. ". Normal : 10.5 to 13 V
: Start the cycle by pressing the Power Key.
Measure the operation voltage between the terminal of the Power Relay
(pin 3) and pin 1 of CN101.
Caution
Check pin the Power Relay and pin 1 of CN101
► Normal: 110V ~ 120V
Corrective actions
- Reconnect the Power Relay.
- Faulty: Replace the Door Switch.
- Faulty: Replace the main PBA Assy.
- Faulty: Replace the main PBA Assy.
Troubleshooting_53