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I
K81
2
3
13
Audible Feedback
Assembly Cord
0000000
2
3
6
7
9
Audible Feedback
Card Pin
1
2
3
4
5
6
7
8
9
• At Display Station.
From/To
Function
• I/O
Conn 10
Input Signal
• I/O
Conn 25
-SV
• I/O
Conn 12
Return
• I/O
Conn 13 and KBI
002
-12V
Not Used
Not Used
Not Used
Audible feedback Assy (White wire)
Return
Audible Feedback Assy IBlue wire)
-12V
Test Points
Keyboard Signals
0
• •
•
•
• •
•
•
• •
• •
• •
• •
• •
• •
• •
• •
System
Connect
Socket
(KB!)
I/O
Conn
KBI Conn
at
~isplay
at
Signal
Station
Keyboard
1
805
Bit 0
2
806
Bit 1
3
013
Bit 2
4
808
Bit 3
5
809
Bit 4
6
813
Bit 6
7
812
Bit 7
8
804
Parity Bit
9
802
Strobe
10
010
Audible Feedback Signal
11
OOS
Gnd (OV de)
12
-
Audible Feedback Return
13
002
-12V de
• Ground on Typewriter
Keyboard
•• Not used on Typewriter Keyboard
TEST POINTS
8
0
2 :
Circuit Board
and Electronics
Assembly
1'0
Conn
at Display
Station
14
15
16
17
18
19
20
21
22
23
24
25
KBI Conn
at
Signal
Keyboard
DOS
• AlphCJ Shift
004
•• DE
Up
Shift
D06
• Numeric Shift
011
KB lockout
BIO
Bit 5
007
Spore
Not Used
Not Used
Not Used
Not Used
012
Reset
B11
Spore
003
'BV de
-
Audible Feedback· BV dc
Voltage Regulator
8V de to 5V de
o
~I
=
Ii=~
~~~~--~ ~------~
E3
E3
D
c:::J
--
.........
-..------------------
I
I
I
L __ -,
L _
All-Keys Assembly
Key Modules
Top View
Diagram 7-19. Type B Keyboard Assembly Pin.nd Term;nel Locations
Component Locations
7-19
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