LG WT6001HVA Service Manual ▷ View online
FOR LG TECHNICIAN
5. COMPONENT TESTING INFORMATION
5-1. FILTER ASSEMBLY (LINE FILTER)
45
When resistance (Ohm) checking the component, be sure to turn the power off, and do
voltage discharge sufficiently.
Wiring
diagram
Test
points
and
Result
Circuit in the MAIN PCB / Wiring Diagram
MAIN PCB
ASSEMBLY
3 3
1 1
RD1
WH1
Vac
1 1
2 2
2 2
Test Points
WH (1) to RD (1)
WH (3) to RD (2)
WH (3) to RD (2)
Result
0 Ω
0 Ω
0 Ω
(1)
(3)
(1)
(2)
RD1
WH1
WARNING
FOR LG TECHNICIAN
5-2. DOOR LOCK SWITCH ASSEMBLY
46
Wiring
diagram
Function
Circuit in the MAIN PCB / Wiring Diagram
The door lock switch assembly consists of a dc motor, a bimetal, a protection ptc,
and a sensing point. It locks the door during a wash cycle.
1. Operation for door closing
- After the system turns on, the microprocessor sends a motor locking signal.
- 12V motor is working.
- Spring that connected with motor shaft is working.
- The hook that connected with spring is pushed out.
- Door lock is detected when switch sensing point is detected in the lock position.
- The motor stop.
➾
Door locked
The maximum allowable number of impulse authorizations is 3
➾
➾
Upon the third authorization of the impulse,
the position of hook goes back to the door-open position.
- Authorizing the impulse occurs in 4.5 seconds upon input for maximum performance
and two authorization processes are allowed at most.
2. Operation for door opening
- With a temporary stop, door automatically opens by hook moving after the micoprocessor sends
an opening signal and the power turns off – maximum of 3 times of the authorizing period
- Upon the fourth authorization of the impulse, the position of CAM goes back to the door-close
position.
FOR LG TECHNICIAN
47
Test points
Result
(1)
(2)
(3)
(4)
(5)
(6)
Result
33 ~ 46 Ω
9 ~ 11 AT
Test Points
(1)To (2)
(1)-Black / (2)-Brown
(4) To (5)
(4)-White / (5)-Green
FOR LG TECHNICIAN
5-3. STATOR ASSEMBLY
48
Wiring
diagram
Function
Test points
(Windings)
Result
(Windings)
Circuit in the MAIN PCB / Wiring Diagram
The direct drive motor can be driven from stopped to maximum speed in infinite steps in either
direction. There are 36 poles on the stator; 12 permanent magnets spaced around the rotor. There
are no brushes to wear out. Unlike a more traditional brushless motor, the rotor surrounds the stator
rather than being attached to it.
Result
5-15 Ω
5-15 Ω
5-15 Ω
5-15 Ω
5-15 Ω
Test Points
(1) to (2)
(2) to (3)
(3) to (1)
(2) to (3)
(3) to (1)
WINDINGS
(1)
HALL SENSOR
(3)
(2)
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