LG WM3360H*CA Service Manual page 42

7. To measure output signal voltage from the hall sensor, carefully move test
8. If pulsing 10 V
- Voltage Testing Hall Sensor from the Main PCB Assembly
Test Point
and
Result
(Hall
Sensor)
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 white hall sensor 4-wire connector using wiring diagram wire colors
6. Plug in power cord, close door, and press the button. DO NOT PRESS START!
7. Place meter leads on White & Gray wires. You should read 10 to 15 V
8. Place meters leads on Blue to Gray. Turn motor rotor slowly by hand. You
leads to terminals 1 to 4, blue and gray. Slowly rotate motor rotor by hand.
You should read a pulsing 10 V
lead on blue wire to red wire, terminal 2. Repeat rotating motor rotor by hand.
You should read a pulsing 10 V
is measured from 1 to 4 and 2 to 4, hall sensor is OK! If either
DC
test netted only 9 to 10 V
likely defective. Disconnect power by unplugging washer and ohm check hall
sensor to verify failure of the hall sensor.
as your guide.
from the Main PCB Assembly to the Hall sensor. If no 10 to 15 V
measured, the control board is defective.
should measure a pulsing 10 V
motor rotor slowly by hand. You should measure a pulsing 10 V
measure a pulsing 10 V
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.
Test Points
(1) to (2)
(1) to (3)
(1) to (4)
(2) to (4)
(3) to (4)
. If 10 V
DC DC
from red to gray.
DC
without changing (no pulsing) the hall sensor is
DC
. Place meter leads on Red to Gray. Turn
DC
, hall sensor and harness OK. If either or both tests
DC
Result
8-12 kΩ
8-12 kΩ
Voltage Input
10-15 V
DC
Pulsing Signal
10 V
DC
Pulsing Signal
10 V
DC
41
is measured from 1 to 4, move
(2) (4)
(1) (3)
Remarks
output
DC
is
DC
. If both tests
DC