LG WM8500HVA Service Manual - Page 38

Test point, Result, Sensor

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The hall sensor determines the speed and direction of the motor. It also can read that the load is off balance when the drum speed fluctuates. Test point and Result (Hall Sensor) - Voltage Testing Hall Sensor at Stator (2) (4) (1) (3) (5) If measuring voltage from the Main PCB Assembly to the Hall Sensor, use the following steps: 1. Unplug power cord. 2. Remove rear washer panel. 3. Locate Hall sensor connector on the stator behind the rotor. 4. Place meter leads on terminals 5 to 4, white to gray. 5. Plug in power cord, close door, and press power button. DO NOT PRESS START! 6. You should measure 10 to 15 VDC. If 10 to 15 VDC is present, control board, white wire, and gray wire are OK! If not, follow testing output voltages on control board in next section. 38

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38
Test point
and
Result
(Hall
Sensor)
The hall sensor determines the speed and direction of the motor.
It also can read that the load is off balance when the drum speed fluctuates.
- Voltage Testing Hall Sensor at Stator
If measuring voltage from the Main PCB Assembly to the Hall Sensor, use the
following steps:
1.
Unplug power cord.
2.
Remove rear washer panel.
3.
Locate Hall sensor connector on the stator behind the rotor.
4.
Place meter leads on terminals 5 to 4, white to gray.
5.
Plug in power cord, close door, and press power button.
DO NOT PRESS START!
6.
You should measure 10 to 15 V
DC
. If 10 to 15 V
DC
is present, control board,
white wire, and gray wire are OK! If not, follow testing output voltages on
control board in next section.
(1)
(3)
(5)
(2)
(4)