LG WT-R10806 / WT-R10856 Service Manual ▷ View online
53
Test
point
and
Result
(Hall
Sensor)
- Voltage Testing Hall Sensor from the Main PCB Assembly
1. Unplug power cord.
2. Remove rear panel.
3. Remove Washer Top.
4. Remove Main PCB Assembly cover as shown in Figure below.
5. Locate the Blue Hall Sensor 6 wire connector using wiring diagram wire colors as your guide.
6. Plug in power cord, close door, and press power button. DO NOT PRESS START!
7. Place meter leads on White & Gray wires. You should read 10 to 15 Vdc output from the Main
PCB Assembly to the Hall sensor. If no 10 to 15 Vdc is measured the control board is defective.
8. Place meters leads on Blue to Yellow. Turn motor rotor slowly by hand. You should measure a
pulsing 10 Vdc. Place meter leads on Red to Yellow. Turn motor rotor slowly by hand. You should
measure a pulsing 10 Vdc. If both tests measure a pulsing 10 Vdc, hall sensor and harness OK. If
either or both tests measures 9 to 10 volts, but does not pulse or change, Hall sensor has failed
and must be replaced. IF zero (0) voltage is measured on either test, check red & blue wires for
continuity. Repair or replace harness as needed.
Result
8-12 kΩ
8-12 kΩ
8-12 kΩ
10-15 Vdc
10 Vdc
10 Vdc
10 Vdc
Test Points
(1) to (2)
(1) to (3)
(1) to (6)
(2) to (6)
(3) to (6)
(1) to (3)
(1) to (6)
(2) to (6)
(3) to (6)
Remarks
Voltage Input
Pulsing Signal
Pulsing Signal
Pulsing Signal
(1)
(2)
(3)
(6)
5-4. PUMP MOTOR ASSEMBLY
54
Wiring
diagram
Test
points
and
Result
Circuit in the MAIN PCB
Wiring Diagram
(1) (2)
* Each circuits of loads in wiring diagram are all same.
Test Points
Result
Remarks
(1) to (2)
80~84 Ω
Resistance
5-5. INLET VALVE ASSEMBLY
55
Wiring
diagram
Function
Test
points
and
Result
Circuit in the MAIN PCB
Wiring diagram
INLET VALVE
Inlet valve driving circuit
Depending on the cycle and water temperature, the controller will energize the hot or cold water
valve solenoids to meet the selected water temperature.
After unplugging the connector of the defective valve, check the resistance.
(1)
(2)
(2)
(2)
(2)
(2)
(1)
(1)
(1)
(1)
* Each circuits of loads in wiring diagram are all same.
Test
Points
(1)-(2)
Result
28.5~31.5 k Ω
56
5-6. HEATER ASSEMBLY
Wiring
diagram
Function
Teat
points
Result
Circuit in the MAIN PCB
Wiring diagram
1 1
2 2
2 1
2 1
2 1
2 1
1. The Wash Heater is designed to raise the wash water to the desired temperature selection during
certain wash cycles.
2. The Steam generator heater is designed to make the water to the steam during steam cycles.
* Each circuits of loads in wiring diagram are all same.
Heater driving circuit
WASH
HEATER
Wash Heater
Wash Heater
(1)
(2)
Test
Points
Result
(1) to (2)
32~34Ω
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