Daewoo KOR-61151 Service Manual page 23

2.
Does the fan motor when you shut the door and turn the time?
YES
Does the oven lamp light?
Does the turntable turn?
YES
No microwave
oscillation.
Check continuity
of filament of
magnetron.
Poor
continuity
Check continuity
of filament of
magnetron.
*Do not operate when you check this continuity
Check continuity fil-
ament tap (3.3V) of high
NO
voltage transformer.
continuity
*Normal reading should be approx. 0 Ω
Check the diode for
cintinuity in the reverse
and normal direction
*Meter with 6V or higher voltage batteries should
be used to check the normal direction resistance
of the diode.
NO GOOD
Check the isolation of
filament winding of high
voltage transformer.
GOOD
Faulty magnetron
NO
NO
continuity
NO
continuity
Continuity
in the
reverse
direction
23
Replace or repair
oven lamp,
turntable motor.
Replace
magnetron.
Replace
high voltage
transformer.
Replace
high voltage
diode.
Replace high voltage
transformer.
Replace
magnetron.