Daewoo KOC-984T Service Manual page 32

PRINTED WIRING BOARD
4. Case of no microwave oscillation
(1) Situation : When touching M/W button, oven lamp turns on, fan motor and turntable motor rotate and cook
indicator in the display comes on.
• CAUSE : Relay 1 (RY1) does not operate.
• Check method
STAGE
R ELAY O N
R ELAY O F F
(2) Situation : When touching M/W button, oven lamp does not turn on and turntable motor does not rotate but cook
indicator in the display comes on.
• CAUSE :
• Check method
STAGE
R ELAY O N
R ELAY O F F
(3) Situation : When touching M/W button, oven lamp turns on and fan motor does not rotate but cook
indicator in the display comes on.
• CAUSE :
+5 V D C
G ND
Relay 3 (RY3) does not operate.
+5 V D C
G ND
Relay 4 (RY4) does not operate.
KOC-984T
POIN T A
KO C-984T
POIN T A
KOC-984T
32
POINT B
G N D
+12 V D C
POINT B
G N D
+12 V D C