LG WD-1409RD Service Manual page 16

PCB Layout (Main)
Pressure Switch
&
Thermistor
Measure Hz impossible Here.
Just check cut-off.
Thermistor for Wash
Common
Pressure Switch
LCD Display LCD Display LCD Display
LCD Display LCD Display Heater
(Next Page)
Door Switch
&
Drain Pump
Door Switch
Measure R impossible here
Common
Drain Pump (152~176Ω)
LCD Display LCD Display Circulation Pump
Circulation Pump (152~176Ω)
15
LCD Display LCD Display PCB Power
LCD Display LCD Display AG Sensor
Measure R impossible here.
Just check cut-off.
Long
Short
Common Common
Motor Stator Control LCD Display LCD Display
W
U
V
V ~ U / U ~ W / W ~ V
R : 8 ~11Ω
Hall Sensor Control LCD Display LCD Display
Ha
(5~15 kΩ)
Hb
(5~15 kΩ)
Common
Inlet Valve Control
Common
Pre. Valve
(3.5~4.5 kΩ)
Main Valve
(3.5~4.5 kΩ)
AG Valve
(3.5~4.5 kΩ)