26/28
CHECK THE KEYBOARD
For example :
Press Button No 1
Check the resistance between pins No 5 and No 12 of the connector.
28
9
8
7
6
5
4
3
2
1
0
11
10
12
14
16
18
20
22
24
26
25
23
21
19
17
15
13
27
29
6
A
N
3
3324
1 2
3 4 5
B
A
T
A
N
0
OFF
ON
A
N
1
A
N
0
A
N
2
7 8
9
12 13
R
J3
A
N
4
A
N
5
R
J7
R
J6
10 11
R
J5
R
J4
1-2
3 -
9
4 -
9
6 -
9
5 -
9
7 -
9
8 -
9
4 -
10
6 -
10
8 -
10
4 -
11
6 -
11
7 -
11
8 -
11
3 -
12
3 -
10
5 -
10
7 -
10
3 -
11
5 -
11
4 -
12
5 -
12
6 -
12
7 -
12
8 -
12
3 -
13
4 -
13
5 -
13
6 -
13
7 -
13
Summary of Contents for 352 Series
Page 3: ...3 28 REPAIR MANUAL 352 SCOREBOARD MODELS...
Page 16: ...16 28 APPENDIX...
