DAEWOO ELECTRONICS KOC-995T0S, Service Manual

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24
TROUBLE SHOOTING GUIDE
(TROUBLE 4) Display shows all figures selected, but oven does not start cooking, even though desired program and time are
set and start pad is tapped.
(TROUBLE 5)
1) Under heater is not heated; Food will not become hot.
2) Convection motor does not rotate.
CONDITION
CHECK RESULT CAUSE REMEDY
1) Turn table
motor and
oven lamp do
not turn on
2) Rotisserie
motor do
not rotate.
No
Continuity
Adjust or
replace
Adjust or
replace
Replace
Replace
Malfunction
of primary
interlock
switch
No
Continuity
0 V
Approx.
12 VDC
Check continuity of
primary interlock switch
Check continuity of
secondary interlock and
D.O.M. switch
Check D.C. voltage
being supplied to
RELAY (RY3) coil
Malfunction
of secondary
interlock and
D.O.M. switch
Defective
touch control
circuit
Faulty
contacts of
RELAY
(RY3) or open
relay coil
CONDITION
CHECK RESULT CAUSE REMEDY
1) Under heater
is not heated.
2) Convection
fan and motor
does not rotate.
No
Continuity
Adjust or
replace
Adjust or
replace
Replace
Replace
Malfunction
of primary
interlock
switch
No
Continuity
0 V
Approx.
12 VDC
Check continuity of
primary interlock switch
Check continuity of
secondary interlock switch
Check D.C. voltage
being supplied to
RELAY (RY5) coil
Malfunction
of secondary
interlock switch
Defective
touch control
circuit
Faulty
contacts of
RELAY
(RY5) or open
relay coil
Replace
No
Continuity
Check continuity of
heater (motor)
Defective
heater(motor)