Daewoo KOT-170S0A, Service Manual

Page: 34 / 70

33
CONDITION CHECK
Check continuity of magnetron
Defective mag-
netron
RESULT
No
Continuity
CAUSE REMEDY
Replace
Outlet has
proper volt-
age Fuse
does not
blow.
CONDITION CHECK
Check continuity of primary inter-
lock switch
Malfunction of pri-
mary interlock
switch
RESULT
No
Continuity
CAUSE REMEDY
Adjust or
replace
Turn table
motor and
oven lamp
do not turn
on
Check continuity of secondary
interlock switch
Malfunction of sec-
ondary interlock
switch
No
Continuity
Adjust or
replace
Check D.C. voltage being sup-
plied to RELAY (RY2) coil
Defective touch
control circuit
0 V Replace
Faulty contacts of
RELAY (RY2) or
open relay coil
Approx.
15 VDC
Replace
Display do not shown
countdown
Malfunction of sec-
ondary interlock
switch
Replace
Check continuity of
power supply cord
Open power sup-
ply cord
No
Continuity
Replace
Defective touch
control circuit
Normal
Replace
NOTE 1
All these switches must be replaced at the same time, please refer to “Interlock Mechanism And Adjustment”.
(TROUBLE 2) Display shows all figures selected, but oven does not start cooking, even though
desired program and time are set and start pad is tapped.