Daewoo KOG-8465 - Trouble 1: Oven Unresponsive

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NOTE 1 : All these switches must be replaced at the same time, please refer to page 11 and 12 for adjustment
instructions.
(TROUBLE 1) Oven does not operate at all; any inputs can not be accepted
Condition
Fuse blows
Continuity
Continuity
Continuity
Shorted contacts
of primary
interlock switch
No
Continuity
No
Continuity
Malfunction of
interlock switch
Check continuity
of interlock monitor
switch with door closed
(COM¡ŒNC)
Check continuity
of both primary and
secondary interlock
switch with door closed
Check continuity of
primary interlock switch
contact with door partially
open until interlock
monitor switch contact
close (COM¡ŒNC close)
Malfunction of
interlock monitor
switch
Replace
Replace
Replace
Check Result Cause Remedy
(COM¡ŒNC)
(COM¡ŒNC)
Note 1.
Note 1.
Note 1.
Replace
Outlet has
proper voltage.
Fuse does
not blow
No
Continuity
Check continuity
both magnetron and
heater thermostat
check continuity of noise
filter board
Check continuity
of power supply cord
No
Continuity
Open power
supply cord
Replace
No
Continuity
Defective line
filter board
Replace
Defective
magnetron and
heater thermostat