LG WM3360H CA Series Service Manual page 42

7. To measure output signal voltage from the hall sensor, carefully move test
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
8. If pulsing 10 V
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.
- 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
as your guide.
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
from the Main PCB Assembly to the Hall sensor. If no 10 to 15 V
measured, the control board is defective.
8. Place meters leads on Blue to Gray. Turn motor rotor slowly by hand. You
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)
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DC
DC
is measured from 1 to 4 and 2 to 4, hall sensor is OK! If either
DC
without changing (no pulsing) the hall sensor is
DC
DC
, hall sensor and harness OK. If either or both tests
DC
Result
8-12 kΩ
8-12 kΩ
10-15 V
DC
10 V
DC
10 V
DC
41
. If 10 V is measured from 1 to 4, move
DC
from red to gray.
(2) (4)
(1) (3)
. Place meter leads on Red to Gray. Turn
Remarks
Voltage Input
Pulsing Signal
Pulsing Signal
output
DC
is
DC
. If both tests
DC