PRINTED WIRING BOARD
(4) Case of no microwave oscillation
(a) 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 3 (RY3) does not operate.
- Check method
(b) 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 : Relay 4 (RY4) does not operate.
- Check method
(c) 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 : Relay 5 (RY5) does not operate.
KOC-970T/980T
STAGE
POINT A
POINT B
R E LAY 3 O N
-5 VD C
G N D
R E LAY 3 O FF
G N D
-12 V D C
KOC-970T/980T
STAGE
POINT A
POINT B
R E LAY 4 O N
-5 VD C
G N D
R E LAY 4 O FF
G N D
-12 V D C
KOC-970T/980T
Summary of Contents for KOC-970T1S
Page 30: ... WIRING DIAGRAM ...
Page 31: ... SCHEMATIC DIAGRAM ...
Page 32: ... SCHEMATIC DIAGRAM ...
Page 33: ... SCHEMATIC DIAGRAM ...
Page 34: ... EXPLODED VIEWS AND PARTS LIST 1 KOC 970T EXPLODED VIEW ...
Page 37: ... EXPLODED VIEWS AND PARTS LIST 2 KOC 980T EXPLODED VIEW ...
