Samsung WA7750M Service Manual page 34

● Heater Model
► CN101
3. AC_LIVE
4. AC_Wash Heater
3
3
► RY102
3. AC_NEUTRAL
4. AC_NEUTRAL-1
32 _ PCB Diagram
► CN902 (For Writing)
1. 5V
2. RxD _Inverter
3. TxD_Inverter
4. Gnd
5. Boot_Inverter
1
► CN901
1. MOTOR_W
2. MOTOR_V
3. MOTOR_U
2
1
► CN801
1. 12V 15.Power Switch
2. GND 16. Water Level In
3. Rx From Sub PBA 17. Door Lock DC Motor (+)
4. NC 18. Gnd
5. Tx to Sub 19. Door Lock DC Motor (-)
6. Water Temp 20. 5V
7. Sub Reset 21. Door Lock Signal
8. NC 22. RxD (For Writing, HASS)
9. 5V 23. 5V
10. ADW Key Input 24. TxD (For Writing, HASS)
11. Gnd 25. Reed Switch Signal
12. Gnd 26. Gnd
13. 12V 27. Door Unlock Signal
14. Water Level Out 28. Boot (For Writing, HASS)
1
6
► CN402
1. AC_Live
2. Cold Valve
3. Hot Valve
4. Rinse Valve
5. ADW Cold Valve
6. NC
7. Clutch
8. Drain Pump
9. NC
10. NC