Daewoo KOC-970T1S, Service Manual

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TROUBLE SHOOTING GUIDE
(TROUBLE 2) Grill heater (top heater) is not heated; Food will not become hot.
CO N DITIO N
CHECK RESULT CAUSE REM EDY
O utlet has
proper voltage
F use does not
blow.
C heck con tinuity of
m agn etron
N o
C ontinuity
D efective
m agn etron
R eplace
C heck con tinuity of noise
filter board
C heck con tinuity of
pow er supply cord
N o
C ontinuity
N o
C ontinuity
N orm al
D efective
noise filter board
O pen pow er
supply cord
D efective
touch control
circuit
R eplace
A djus t
A djus t
A ll these sw itches m ust be replaced at the sam e tim e, please refer to (7.Interlock M echanism and Adjust)
for adjustm ent instructions.
NOTE
CO N DITIO N
CHECK RESULT CAUSE REM EDY
G rill heater is
not heated.
N o
C ontinuity
C heck continuity of
prim ary interlock sw itch
C heck continuity of
secondary interlock sw itch
C heck continuity of
heater
C heck D .C. voltage
being supplied to
R ELAY (R Y2) coil
M alfunction
of prim ary
interlock sw itch
M alfunction
of secondary
interlock sw itch
D efective
touch control
circuit
F aulty
contacts of
R ELAY
(RY 2) or open
relay coil
D efective
heater
A djus t or
R eplace
A djus t or
R eplace
R eplace
R eplace
R eplace
N o
C ontinuity
N o
C ontinuity
0 V
A pprox
12 VD C