How To Diagnose And Repair By Symptom - LG WTV09BSL Service Manual

4-9. HOW TO D IA G N OS E A N D R E PA IR B Y S Y M PTOM
1) W a s h e r is n o t e n e r g ize d .
Where, what & how to check?
Household Power supply
1. Check whether connection between
the plug and the electrical is poor
2. Measure voltage of the electrical.
Wiring of the Washer
1. Measure resistance between both
ends of the power supply cord with
both the plug pins short-circuited.
2. Check whether every connector in
the bundle of connectors has a
good connection.
3. Check resistance of every wire to
find out a open wire.
Electrical component
Measure resistance to check
whether the T.P of the motor is
blown out.
Controller
If there are no defects in the above,
it should be defect of the controller.
If supply voltage is 120% higher than
rating the varistar in the controller may
be broken. Check supply voltage.
Result of Check Possible Cause
Poor
Around rating
0V
Less than 1
Male & female
connectors
separated
motor is hot
Over 120%
voltage than
rating check
39
How to repair & settle
Defect of the
electrical
No defect
Defect of household
power supply
No defect
Open circuit of the
power supply cord
Poor connection.
Wire is opened.
T.P blown out
Change the electrical .
Call for power supply
company
Change the power
supply cord.
Remove the cause to
give strain and
reconnect them.
Change the lead wire.
Remove cause to
overload the motor
Change the controller
if all the electrical parts
have no defects.