LG MC-805CLR, Service Manual

Page: 26 / 39

5-16
CONDITION
Oven does not go into a
cook cycle when START key
is touched.
Primary and secondary
interlock switches defective
or out of adjustment.
Defective flat cable of
P.C.B.
Test procedure flat cable of
P.C.B.
Test procedure primary and
secondary switches.
CAUSE
TEST PROCEDURE OR
CORRECTION
Defective tact switch key of
P.C.B. Test procedure tact switch
key of P.C.B.
Open or loose wiring to
above components.
Check and repair wiring.
Ouput power is too low.
Defective fan motor.
Low AC input voltage.
Use the microwave oven at
adequate line voltage.
Test procedure fan motor.
Food temperature is too low.
This may not be a defect.
It is possible that the food
should be cooked for a
longer period.
Uneven cooking.
Inconsistent intensity of
microwave by their
characteristics.
Food does not turn during
cook cycle.
Food or cookware extending
oven edges of turntable prevents
turning rearrange food.
1. Wrap the thinner part with
aluminum foil.
2. Use plastic wrap or with a lid.
3. Stir once or twice while cooking
soup, cocoa or milk etc.
Turntable motor does not
operate. Refer to preceding turntable
motor problem.
Output is too high when you
set lower power level.
Defective relay 2 of P.C.B.
High AC input voltage.
Use the microwave oven at
adequate line voltage.
Test procedure relay 2 of
P.C.B.
(TROUBLE 3) Oven does not operating microwave cooking