Samsung DW80M9 Series Service Manual page 50

Check type Check code
Half load check PC
48 _ Troubleshooting
Checking method
1. Check the connections for the Distributor Motor and Micro Switch
connectors.
2. Check whether the coil in Distributor Motor is conductive.
: Remove the connectors before measuring.
► Normal: Approx. 3.6 ~ 4.0kΩ
3. Check the position sensing operations when turning the Micro Switch on
and off.(Use n5 Service test mode.) Check the conduction between the
brown wire and the Violet wire.
► Micro switch On: Short
► Micro switch Off: Open
- Micro Switch sign alters in ON/OFF state.
- It is NG if keep in ON or OFF state for 120 seconds.
* Do not supply with water and test.
4. Adjust Cam Assy and Find the faulty.
5. Check whether half load is operating normally.
- Check the half load operation
► Normal: 110 ~ 120V
- Check the operation of Distributor Motor Relay.
: Check the operating voltage between the 3pin(Brown) wire of the
Main PBA CN401 connector and the 1pin(White) wire of the Main PBA
CN101 connector.
► Normal: 110 ~ 120V (while operating)
6. Check the Power Relay.
Corrective actions
- Reconnect the Distributor Motor and Micro
Switch connectors.
- Faulty: Replace the Distributor Motor.
- Faulty: Replace the Micro Switch for sensing
positions.
- Normal: Replace the valve distributor and
CAM switch.
- Faulty: Replace Cam Assy.
- Faulty: Replace the Main PBA Assy.
- See the "Power Relay check code".