Test 3 Motor Test - LG GD1329CGS Service Manual

Test 3
Motor Test
WARNING
• Before measuring resistance, be sure to turn power off, and do voltage discharge. (When discharging,
contact the metal plug of power cord with the earth line.)
• Failure to follow these instructions can result in death or electrical shock.
Trouble Symptom
Measurement Condition
YL3 BL2
Drum does not turn, fan does not blow, and heater does not operate.
Turn the dryer's power off, then measure resistance.
Is resistance below 3Ω between connector
YL3- (White wire) and BL2-
1
Measure while door is closed.
Is resistance below 3Ω between Connector
YL3- (White wire) and BL2-
1
while door is closed.(Yellow wire)?
Is resistance below 3Ω between Connector
BL2- (Yellow wire) and BL2-
1
Is resistance below 1Ω between terminals of
outlet thermostat attached to blower housing?
Does idle switch attached to motor bracket
operate level by drum belt?
(Not operating lever is normal.)
Is resistance below 1Ω between idler switch
terminals?
• Check motor. (Refer to Motor Diagram and Check)
• Check if control connector is contacted.
(Brown wire)?
2
NO
Measure
2
YES
(Brown wire)?
2
NO
YES
YES
52
• Replace control.
YES
(Relay check)
• Check controller
connector.
• Check if door frame
presses door
switch knob.
NO
• Check door switch.
• Check harness
connection.
• Replace control.
YES
(Relay check)
• Check controller
connector.
• Replace outlet
• Thermostat.
NO
(Refer to
component)
• Check idler assembly
• Drum belt cuts off
YES • Drum belt takes off
from motor pulley.
• Replace idler
NO
switch.