LG WM2277H Series, Training Manual

Page: 29 / 82

WM2277 WASHER PAGE 31 of 84 TRAINING MANUAL
Testing the Hall Sensor from the Control Board
Control Board Testing Location
Control Board Output and Hall Sensor Input can be measured with the connector
connected to the board and the machine operating. Also, these voltages can be
measured by parking the meter leads on the desired terminals and spinning the
tub briskly with the power cord disconnected.
•
White to Gray – 10 to 15 vdc
•
Gray to Blue – pulsing 10vdc
•
Gray to Red – pulsing 10vdc
Note: If 10 V
dc
from gray-to-blue or gray-to-red does not change (pulse), that
resistor is open! Confirm by disconnecting the power, disconnecting the hall
sensor connector on the main board, and ohm check that individual circuit!
With power disconnected and the connector disconnected, the hall sensor can be
tested ohmmetrically from:
•
White to Blue – 10 K Ω
•
White to Red – 10 K Ω
Note: Ohm values are approximate; if either ohm check shows an open, the wire
harness is open or the hall sensor is defective. Test both separately to determine
the area of failure!