Daewoo KOG-361Q, Service Manual, Page: 32 / 58

(TROUBLE3) The oven not operate at all; Display window does not display any figures
and any inputs can not be accepted.
31
Check Result
Cause Cause
Replace
Primary
Interlock Switch
and Secondary
Interlock Switch
and Monitor
Interlock Switch.
Check continuity
Interlock Monitor
switch with door
closed.
Condition
15A fuse
blows Continuity
No
continuity
Malfunction of
Interlock monitor
switch
Replace
Primary
Interlock Switch
and Monitor
Interlock Switch.
Check continuity
of both Primary
Interlock Switch
contact with door
partially open until
interlock monitor
switch contact
close. Continuity
Shorted con-
tacts
of primary inter-
lock switch.
(Replace 15A fuse)
Defective high
voltage trans-
former
Check continuity
of primary
winding of low
voltage trans-
former. 0
Ω
or
infinite
Approx
90~130
Ω
(normal)
Shorted of open
winding
Replace
Normal
Replace Low
Voltage
Transformer
Replace
15A fuse
again
blows
Defective high
voltage capaci-
tor
Disconnect one
side of the lead
wire connected
from transformer
to the high voltage
capacitor and
operate the unit.
NOTE 1
NOTE 1
NOTE 1:
All these switches must be replaced at the same time, please refer to page 19 and 20
for adjustment instructions.