Daewoo KOR-971M0A Service Manual page 49

(KOR-971Q)
The membrane keyboard consists of 26 keys whose configurations are described above and provide 11 pad terminations to
be connected to the touch control circuit as Fig. 11.
Key check procedure
To determine if the membrane keyboard is defective or not, check the continuity of each pad (KEY) contacts with a
multimeter.
11) 5
12) 0
13) POWER
14) SPEEDY COOK
15) FEEDING BOTTLE
16) 6
17) 1
18) SOUP
19) MUFFIN
10) 7
11) 2
12) FRESH VEGETABLE pad : Between C and H
13) BEVERAGE
E
5
9
F 6
4
G
7
BAKED DINNER
POTATO PLATE
H
8
FROZEN
N.C
PIZZA
I
9
START LESS
J
10
STOP/ CLOCK/
CLEAR A.START
K
11
Fig. 11 Key Matrix
pad : Between A and F
pad : Between A and G
pad : Between A and H
pad : Between A and I
pad : Between A and J
pad : Between B and F
pad : Between B and G
pad : Between B and H
pad : Between B and I
pad : Between C and F
pad : Between C and G
pad : Between C and I
D C
4 3
8 7 6
3 2 1
FRESH
SOUP
VEGETABLE
BEVERAGE MUFFIN
N.C
MORE
AUTO
N.C
DEFROST
14) MORE
15) AUTO DEFROST
16) 8
17) 3
18) DINNER PLATE
19) FROZEN PIZZA
20) LESS
21) CLOCK/A.START
22) 9
23) 4
24) BAKED POTATO
25) START
26) STOP/CLEAR
47
B A
2 1
5
0
POWER
SPEEDY
COOK
FEEDING
BOTTLE
N.C
pad : Between C and J
pad : Between C and K
pad : Between D and F
pad : Between D and G
pad : Between D and H
pad : Between D and I
pad : Between D and J
pad : Between D and K
pad : Between E and F
pad : Between E and G
pad : Between E and H
pad : Between E and J
pad : Between E and K