Reset During Operation - LG WT-R107 Service Manual

2) Defects on displaying funcion
Where, what & how to check?
Main voltage
1. Measure mains voltage at the wall outlet
2. Meaure voltage at the extended outlet
that the washer is plugged in if the
extended outlet is used and voltage at
the electrical outlet is normal in the
above.
Controller
1. Defect of LED.
2. Defect of LED driving circuit.
3. Defect of micom.

3) Reset During operation

Where, what & how to check?
Main voltage
1. Measure voltage of the outlet that the
washer is plugged into during wash and
spin.
2. Reset symptom happens at specific time
zone repeatedly.
3. Check whether a transfomerlent power
cut happens. (Fluorescent lamp is
transfomeriently blinked)
Controller
1. If mains voltage and the drain motor
have no defects a defect of the controller
is highly possible.
Result of Check
Less than 85% of the Low voltage
rating
Less than 85% of the
The dia of the lead wire is
rating
smaller or many loads are
connected at the same
outlet
Defect of controller.
Result of Check
Less than 80% of the Mains voltage is too low
rating. or size of a lead wire is
too small.
External noise inrushed.
43 43
Possible Cause
To explain that it is
caused by low voltage in
electric supply and
recommend using a
transfomer if voltage has
been continuously low.
To use a transfomer
having a enough capacity
if using a transfomer.
Change the controller.
Possible Cause
Explain that it is caused
by low voltage in electric
mains and recommend
using a suitable size of
leads.
Explain it is caused by
using environment.
(It happens when
equipment with high
frequency is used
around)
Explain it is a problem of
electric supply
environment.
Change the controller.
How to repair & settle
How to repair & settle