Keyboard/Display Cards; Keyboard Logic Card J02 And J03 Connector - IBM 5280 Technical Newsletter

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KEYBOARD LOGIC CARD
J02 AND J03 CONNECTOR
The J02 connector carries the signals from the keyboard
pad printed circuit board to the keyboard logic card. The
J03 connector carries the signal and drive voltage to the
speaker.
J02 Signal Lines
1
ground
2 +drive 22
3 +drive 21
4 +drive 20
5 +drive 19
6
+drive 18
7 +drive 17
8 +drive 16
9 +drive 15
10 +drive 14
11 +drive 13
12 +drive 12
13 +drive 11
14 +drive 10
15 +drive 09
16
unused
17 +drive 08
18
+drive 07
19 +drive 06
20 +drive 05
21
+drive 04
22
+drive 03
23 +drive 02
24 +drive 01
25 +drive 00
26
matrix shield ground
27 -sense A
28
-sense B
29 -sense C
30 -sense 0
J03 Signal Lines
1
2
-click
+5 volt
~
220'
Keyboard/Display Cards 43