Read LG T1203TEFT1 Service Manual online
40
4-9. HOW TO DIAGNOSE AND REPAIR BY SYMPTOM
1) Washer is not energized.
Where, what & how to check?
Result of Check Possible Cause
How to repair & settle
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
1. Check resistance with power relay
switch turned on
2. Check the secondary voltage of the
transfomer.
3. Measure resistance to check
whether the T.P of the motor is
blown out.
4. Check whether the fuse is open.
Controller
If there are no defects in the above,
it should be defect of the controller.
If supply voltage is 120% higher than
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.
Poor
Around rating
0V
0V
Less than 1
Male & female
connectors
separated
Less than 0.5
More than 1.0
10~14V
0V
0V
motor is hot
Open
Over 120%
voltage than
rating check
Defect of the
electrical
No defect
Defect of household
No defect
Defect of household
power supply
No defect
Open circuit of the
Open circuit of the
power supply cord
Poor connection.
Wire is opened.
No defect
Poor contact
Poor contact
No defect
Coil is open
Coil is open
T.P blown out
Defect of the fuse
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.
Change the lead wire.
Change the AUTO OFF
Switch
Change the
transfomerformer.
Remove cause to
overload the motor
Change the fuse.
CAUTION
Check the fuse rating
AC100~127V:125V 12A
AC220~240V:250V 6A
Change the controller
if all the electrical parts
have no defects.
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