Daewoo KOG-875T2S, Service Manual

Page: 19 / 40

18
(TROUBLE 2) Grill Heater (Top heater) does not heat (Food will not become hot).
Condition Check Result Cause Remedy
Replace
Outlet has
proper voltage.
Fuse does not
blow. Check
continuitymagnetron No
Continuity Defective magnetron
Replace
Check continuity of
noise filter board No
Continuity Defective line filter
board
Condition Check Result Cause Remedy
Adjust or
replace Grill heater is
not heated Check continuity of
primary interlock
switch No
Continuity Malfunction of Primary
Interlock Switch
Adjust or
replace Check continuity of
secondary interlock
switch No
Continuity Malfunction of
secondary interlock
switch
Replace
Check continuity of
heater No
Continuity
Defective heater
Replace
Check D.C. voltage
being supplied to
RELAY (RY2) coil
0V
Defective touch control
circuit
Replace
Approx.
12VDC Faulty contacts of
RELAY (RY2) or open
relay coil
Adjust.
No
Continuity
Normal
Open power supply
cord
Adjust.
Check continuity of
power supply cord
Defective touch control
circuit
NOTE1 : All these switches must be replaced at the same time, please refer to page7 for adjustment instructions