— 4 —
CIRCUIT DESCRIPTION
KEY MATRIX
Note: Each key has two contacts,
the first conatct (1) and second contact (2).
Key
Second contact (2)
First contact (1)
KC
SI
FI
0
C
K
1
C
K
2
C
K
3
C
K
4
C
K
5
C
K
6
C
K
7
C
K
0
I
F
)
1
(
0
A
)
1
(
0
#
A
)
1
(
0
B
)
1
(
1
C
)
1
(
1
#
C
)
1
(
1
D
)
1
(
1
#
D
)
1
(
1
E
0
I
S
)
2
(
0
A
)
2
(
0
#
A
)
2
(
0
B
)
2
(
1
C
)
2
(
1
#
C
)
2
(
1
D
)
2
(
1
#
D
)
2
(
1
E
1
I
F
)
1
(
1
F
)
1
(
1
#
F
)
1
(
1
G
)
1
(
1
#
G
)
1
(
1
A
)
1
(
1
#
A
)
1
(
1
B
)
1
(
2
C
1
I
S
)
2
(
1
F
)
2
(
1
#
F
)
2
(
1
G
)
2
(
1
#
G
)
2
(
1
A
)
2
(
1
#
A
)
2
(
1
B
)
2
(
2
C
2
I
F
)
1
(
2
#
C
)
1
(
2
D
)
1
(
2
#
D
)
1
(
2
E
)
1
(
2
F
)
1
(
2
#
F
)
1
(
2
G
)
1
(
2
#
G
2
I
S
)
2
(
2
#
C
)
2
(
2
D
)
2
(
2
#
D
)
2
(
2
E
)
2
(
2
F
)
2
(
2
#
F
)
2
(
2
G
)
2
(
2
#
G
3
I
F
)
1
(
2
A
)
1
(
2
#
A
)
1
(
2
B
)
1
(
3
C
)
1
(
3
#
C
)
1
(
3
D
)
1
(
3
#
D
)
1
(
3
E
3
I
S
)
2
(
2
A
)
2
(
2
#
A
)
2
(
2
B
)
2
(
3
C
)
2
(
3
#
C
)
2
(
3
D
)
2
(
3
#
D
)
2
(
3
E
4
I
F
)
1
(
3
F
)
1
(
3
#
F
)
1
(
3
G
)
1
(
3
#
G
)
1
(
3
A
)
1
(
3
#
A
)
1
(
3
B
)
1
(
4
C
4
I
S
)
2
(
3
F
)
2
(
3
#
F
)
2
(
3
G
)
2
(
3
#
G
)
2
(
3
A
)
2
(
3
#
A
)
2
(
3
B
)
2
(
4
C
5
I
F
)
1
(
4
#
C
)
1
(
4
D
)
1
(
4
#
D
)
1
(
4
E
)
1
(
4
F
)
1
(
4
#
F
)
1
(
4
G
)
1
(
4
#
G
5
I
S
)
2
(
4
#
C
)
2
(
4
D
)
2
(
4
#
D
)
2
(
4
E
)
2
(
4
F
)
2
(
4
#
F
)
2
(
4
G
)
2
(
4
#
G
6
I
F
)
1
(
4
A
)
1
(
4
#
A
)
1
(
4
B
)
1
(
5
C
)
1
(
5
#
C
)
1
(
5
D
)
1
(
5
#
D
)
1
(
5
E
6
I
S
)
2
(
4
A
)
2
(
4
#
A
)
2
(
4
B
)
2
(
5
C
)
2
(
5
#
C
)
2
(
5
D
)
2
(
5
#
D
)
2
(
5
E
7
I
F
)
1
(
5
F
)
1
(
5
#
F
)
1
(
5
G
)
1
(
5
#
G
)
1
(
5
A
)
1
(
5
#
A
)
1
(
5
B
)
1
(
6
C
7
I
S
)
2
(
5
F
)
2
(
5
#
F
)
2
(
5
G
)
2
(
5
#
G
)
2
(
5
A
)
2
(
5
#
A
)
2
(
5
B
)
2
(
6
C
8
I
F
)
1
(
6
#
C
)
1
(
6
D
)
1
(
6
#
D
)
1
(
6
E
)
1
(
6
F
)
1
(
6
#
F
)
1
(
6
G
)
1
(
6
#
G
8
I
S
)
2
(
6
#
C
)
2
(
6
D
)
2
(
6
#
D
)
2
(
6
E
)
2
(
6
F
)
2
(
6
#
F
)
2
(
6
G
)
2
(
6
#
G
9
I
F
)
1
(
6
A
)
1
(
6
#
A
)
1
(
6
B
)
1
(
7
C
)
1
(
7
#
C
)
1
(
7
D
)
1
(
7
#
D
)
1
(
7
E
9
I
S
)
2
(
6
A
)
2
(
6
#
A
)
2
(
6
B
)
2
(
7
C
)
2
(
7
#
C
)
2
(
7
D
)
2
(
7
#
D
)
2
(
7
E
0
1
I
F
)
1
(
7
F
)
1
(
7
#
F
)
1
(
7
G
)
1
(
7
#
G
)
1
(
7
A
)
1
(
7
#
A
)
1
(
7
B
)
1
(
8
C
0
1
I
S
)
2
(
7
F
)
2
(
7
#
F
)
2
(
7
G
)
2
(
7
#
G
)
2
(
7
A
)
2
(
7
#
A
)
2
(
7
B
)
2
(
8
C
0
I
K
L
A
T
I
G
I
D
T
C
E
F
F
E
/
1
O
N
A
I
P
2
O
N
A
I
P
/
1
O
N
A
I
P
.
E
2
O
N
A
I
P
.
E
-
C
I
S
P
R
A
H
/
D
R
O
H
-
H
P
A
R
B
I
V
E
N
O
E
P
I
P
/
N
A
G
R
O
Z
Z
A
J
N
A
G
R
O
/
S
G
N
I
R
T
S
H
T
N
Y
S
S
G
N
I
R
T
S
T
C
E
L
E
S
/
A
G
N
O
S
B
G
N
O
S
1
I
K
D
R
O
C
E
R
L
O
R
T
N
O
C
O
M
E
D
-
O
P
S
N
A
R
T
#
F
E
S
-
O
P
S
N
A
R
T
#
G
E
S
-
O
P
S
N
A
R
T
#
A
E
S
-
O
P
S
N
A
R
T
D
E
S
-
O
P
S
N
A
R
T
E
E
S
2
I
K
P
O
T
S
T
R
A
T
S
-
O
P
S
N
A
R
T
G
E
S
-
O
P
S
N
A
R
T
A
E
S
-
O
P
S
N
A
R
T
B
E
S
-
O
P
S
N
A
R
T
#
C
E
S
Summary of Contents for CPS-85
Page 13: ...13 SCHEMATIC DIAGRAMS Main PCB JCM423 MA1M 1 2 8 7 6 5 3 4...
Page 14: ...14 Sub PCBs JCM423 MA2M MA3M MA4M 10 9...
Page 15: ...15 Console PCBs JCM423 CN1M CN2 CN3M...
Page 16: ...16 Keyboard PCB JCM886T KY1M...
Page 17: ...17 Keyboard PCB JCM886T KY2M...
Page 18: ...18 Keyboard PCB JCM886T KY3M...
Page 20: ...20 35 33 35 31 30 34 32 SP 2...
Page 24: ...8 11 10 Nishi Shinjuku Shinjuku ku Tokyo 160 Japan Telephone 03 3347 4926 MA0700571A...