Daewoo KOR-612L0S, Service Manual, Page: 35 / 55

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2. Type of encoding and pad names.
Fig. 5 Key Matrix
The membrane keyboard consists of 27 keys whose configurations are described above and provide 11 pad ter-
minations to be connected to the touch control circuit as Fig. 4.
3. Key check procedure.
To determine if the membrane keyboard is defective or not, check the continuity of each pad (KEY) contacts with a
multimeter.
E D C B A
F
G
H
I
J
K
9 8 7 6 5
4 3 2 1 0
STOP/
CLEAR CLOCK/
A.START AUTO
DEFROST
FROZEN
PIZZA
VEGETABLE
SPEEDY
COOK
FEEDING
BOTTLE
BEVERAGE
START
BAKED
POTATO
LESS
HIGH M-HI MED M-LOW LOW
MORE
1) 5 pad : Between A and F
2) 0 pad : Between A and G
3) LOW pad : Between A and H
4) SPEEDY COOK pad : Between A and I
5) FEEDING BOTTLE pad : Between A and J
6) 6 pad : Between B and F
7) 1 pad : Between B and G
8) M-LOW pad : Between B and H
9) VEGETABLE pad : Between B and I
10) 7 pad : Between C and F
11) 2 pad : Between C and G
12) MED pad : Between C and H
13) BEVERAGE pad : Between C and I
14) MORE pad : Between C and J
15) AUTO DEFROST pad : Between C and K
16) 8 pad : Between D and F
17) 3 pad : Between D and G
18) M-HI pad : Between D and H
19) FROZEN PIZZA pad : Between D and I
20) LESS pad : Between D and J
21) CLOCK/A.START pad : Between D and K
22) 9 pad : Between E and F
23) 4 pad : Between E and G
24) HIGH pad : Between E and H
25) BAKED POTATO pad : Between E and I
26) START pad : Between E and J
27) STOP/CLEAR pad : Between E and K