LG ARNU Series, Service Manual

Page: 123 / 226

Service Manual 123
Checking Method for Key Components
1) Disconnect an terminal of voltage distribution resistor from each DC link
electrolytic capacitor
2) Set the multi meter to resistance mode, connect the probe to +,- terminal
of the capacitor. If the estimated resistance value is increase
continuously without short(value is 0), then the resistor is normal
3) Set the multi meter to resistance mode, confirm that the resistance value
of the resistor is around 270 kOhm
Check and replace inferior
components
Guide of check electrolytic capacitor and resistor for voltage distribution
In case that the control box is opened and before checking electrical parts,
it should be checked that the LED 01Y turned off (wait 3 minutes after main power
OFF), otherwise it may cause electrical shock.
Caution
Electrolytic capacitor and resistor for voltage distribution
2.6 Other