Component Testing Information; Door Lock - Hisense WFU7012 Service Manual

10. COMPONENT TESTING INFORMATION

10.2 DOOR LOCK

Wiring
diagram
Function
Test points
and result
Circuit in the PCB / Wiring Diagram
1.Machine door lock:
After press down the "Start/pause" key, the MCU will send out an order to close
the door, the SCR controls the door locks L and N to connect, PTC is heating, L'
breakover, and the loads such as inlet valve, pump, motor and so on are
energized.
2. Machine door unlock:
After the washing program ends, the MCU sends out an order of unlocking, the
SCR controls the door locks L and N to connect, and after 3 to 5 seconds, the PTC
temperature falls, L' breaks, and the unlocking operation is finished.
Test Points
3-4
4-5
3-5
3 4 5
Result
900Ω
0 Ω
220-240V
40
Remarks
At 77°F (25°C)
Voltage Input