41
2. Type of encoding and pad names. (KOR-145Q)
Fig. 8 Key Matrix
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. 7.
Key check procedure.
To determine if the membrane keyboard is defective or not, check the continuity of each pad (KEY) contacts with a
multimeter.
9
E
8
D
7
C
6
B
5
A
E
4
3
2
1
Q
G
DINNER
PLATE
BAKED
POTATO
FROZEN
PIZZA
LESS
MORE
START
CLOCK/
A.START
AUTO
DEFROST
SOUP
STOP/
CLEAR
MUFFIN
SPEEDY
COOK
POPCORN
BEVERAGE
FRESH
VEGETABLE
POWER
H
I
J
K
1
1) 5
pad :
Between A and F
1
2) 0
pad :
Between A and G
1
3) POWER
pad :
Between A and H
1
4) SPEEDY COOK
pad :
Between A and I
1
5) 6
pad :
Between B and F
1
6) 1
pad :
Between B and G
1
7) SOUP
pad : Between B and H
1
8) MUFFIN
pad :
Between B and I
1
9) 7
pad :
Between C and F
10) 2
pad :
Between C and G
11) FRESH VEGETABLE pad :
Between C and H
12) BEVERAGE
pad :
Between C and I
13) MORE
pad :
Between C and J
14) AUTO DEFROST
pad :
Between C and K
15) 8
pad :
Between D and F
16) 3
pad :
Between D and G
17) DINNER PLATE
pad :
Between D and H
18) FROZEN PIZZA
pad :
Between D and I
19) LESS
pad :
Between D and J
20) CLOCK/A.START
pad :
Between D and K
21) 9
pad :
Between E and F
22) 4
pad :
Between E and G
23) BAKED POTATO
pad :
Between E and H
24) POPCORN
pad :
Between E and I
25) START
pad :
Between E and J
26) STOP/CLEAR
pad :
Between E and K
