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BOARP CONNECTIONS
Keyboard Connection
01>
Connector Jl on the upper edge of the 662 board is connected to the detachable
keyboard via a plug on the bottom of the 50001S.
The signals are as follows:
pin
1
· · ·
·
+12 volts
p1n
2
+12 volts
pin
3
GND
ptn
4
· · · ·
Bell output
pin
5
·
· · ·
GND
ptn
6
Keyboard serial data
Modem Connection (2)
This connection is not used
111
the 50001S.
Monitor Connector
(13)
Connector
J3
on the lower edge of the 662 board is connected to the key!:'oarc
interface card (890) which is connected to the CRT monitor board.
J
3
has tte
following pin assignments:
pln
1
pin
2
pm
3
pin
4
p1n
5
pin
6
pln
7
pin
8
pm
9
pin 10
GND
Vertical SYNC
VIDEO
GND
Horizontal SYNC
NOT USED
Keyboard serial data
Keyboard bell output
NOT USED
GND
Po wer Supply Connection (14)
Connector J4 on the lower right edge of the 662 board is connected to connector
J5 on the power supply.
The pin assignments for J4 are listed below:
pin
1
GND
pin
2
GND
pm
3
-12 volts
pln
4
+12 volts
pin
5
·
· · ·
+5 volts
p1n
6
· ·
·
·
+5 volts
IMS International
5000 Series Microcomputers/7.01.83jPage 87
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