DAEWOO ELECTRONICS KOR-63B50P, Service Manual

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TROUBLE SHOOTING GUIDE
Following the procedures below to check if the oven is defective or not
1. Check grounding before checking trouble.
2. Be careful of the high voltage circuit.
3. Discharge the high voltage capacitor.
4. When checking the continuity of the switches, fuse or high voltage transformer, disconnect one lead wire from these parts
and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.
(TROUBLE 1) Door shut, timer set, but no cooking takes place.
D oes th e fa n m otor w ork w hen you
sh ut the door a nd turn the tim er?
D oes th e
fuse b low ?
C heck continuity of interlo ck
m on itor sw itch w ith door shut.
R epla ce prim ary, s eco nda ry
interlo ck sw itch and interloc k
m on itor sw itch.
R epla ce fuse a nd check
co ntinuity of both interlock
sw itch 's c ontact an d m onitor
sw itch 's c ontact w ith d oor
partially o pen until m onitor
sw itch contac t.
R epla ce prim ary, s eco nda ry
interlo ck sw itch and interloc k
m on itor sw itch.
D isconnect one side o f the
lead w ire connec te d from
transform er to the high voltage
ca pacitor, a nd operate oven.
R epla ce high
vo ltage
ca pacitor.
R epla ce high
vo ltage transform er
If ou tlet has p rop er volta ge,
ch eck c ontinuity of p ow er
su pply co rd .
R epla ce pow er
su pply co rd .
Y E S (R efer to nex t pa ge)
N O
N O
N O
Y E S
C on tinuity
N O C ontinuity
N O C ontinuity
B oth co ntin uity
N orm al
F u se aga in