Daewoo KOR-616T2S Service Manual page 34

(TROUBLE 2) Oven does not operte at all; any inputs can not be acceted
Condition
Check continuity
Fuse blows
of interlock
monitor switch
with door closed.
(COM
Check continuity
of both Primary
and secondary
interlock switch
with door closed
Check continuity
of primary interlock
switch contact with
door partially open
unit interlock
monitor switch
contact close
(COM
Check continuity
of primary winding
of low voltage
transformer.
Disconnect high
voltage fuse and
operate the unit
Result
Check
(COM
Continuity
NC)
(COM
No
continuity
No
Continuity
Continuity
Continuity
NC close)
0 Ω or
infinite
Approx
90-120 Ω
(normal)
Fuse again
bolows
Cause
NC)
Malfunction of
Interlock monitor
switch
NC)
Malfunction of
interlock switch
Shorted contacts
of primary
interlock switch
Defective low
voltage
transformer
Defective high
voltage transformer
33
Remedy
Replace
NOTE 1
Replace
NOTE 1
Replace
NOTE 1
Replace
Replace