Daewoo KOR-616T2S, Service Manual

Page: 34 / 56

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