LG TCD1870QGS Service Manual page 41

Test 6
Blower fan abnormal vibration & noise solution
WARNING
• Before doing maintenance. Be sure to turn power and gas off, and do voltage discharge.
• Failure to follow these instructions can result in death or electric shock.
Trouble Symptom
Measurement Condition
Drum motor
Roller
Blower fan
Abnormal vibration and noise are occurred in the back side of the machine.
After turning power off, measure the resistance.
Is there abnormal vibration and noise
at the drum motor operation step on Test
mode?
Is there abnormal vibration and noise at the
fan and the drum motor operation step,
after pushing start button additionally?
Check legs which is well installed or not.
NO
NO
41
• Check supply
Voltage, the drum
YES
motor and the
roller.
• C heck blower fan
YES
In the back side
and clean it.