LG F12U2HDM Series Service Manual page 39

Symptom
1. LOCKED MOTOR
ERROR (LE)
Motor
Hall Sensor
(1)(2)(3)(4)(5)
Motor Main PWB
st
(1) ~ (2) RD4 1 ~ RD4 2
nd
(2) ~ (3) RD4 2 ~ RD4 3
th
(3) ~ (1) RD4 3 ~ RD4 1
1.Check Electric Wiring.
2.Check Motor's Resistance.
3.Check Hall sensor 's Resistance.
4.Check Hall sensor 's Voltage.
CN2
(3)
(2)
(1)
Resistance
[ ]
nd
5 ~ 15
th
5 ~ 15
st
5 ~ 15
Check Point
NA1
Hall
Main PWB
Sensor
th
(1) ~ (5) NA1 3 ~ NA1 1
nd
(2) ~ (5) NA1 2 ~ NA1 1
th
(4) ~ (5) NA1 4 ~ NA1 1
th
(1) ~ (4) NA1 3 ~ NA1 4
nd
(2) ~ (4) NA1 2 ~ NA1 4
Result
st
8 ~ 12 k
st
8 ~ 12 k
10 ~ 15 Vdc
st
(Voltage Input)
10 Vdc
th
(Pulsing Signal)
10 Vdc
th
(Pulsing Signal)