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TABLE 1-3
POWER CONNECTOR PIN ASSIGNMENTS
Pin
Supply Voltage
1
+12VDC
2
Return ( + 12 VDC)
.
3
Return ( + 5 VDC)
4
+5VDC
5.
Side Select
6.
Write Gate
These input lines are terminated through a 150 ohm resistor pack that is installed in the dip socket located at IC
location 2F. In a single-drive system
,
this resistor pack should be kept in place to provide the proper terminations.
In a multiple-drive system (Program Shunt position MX open), only the last drive on the interface is to be termina-
ted. All other drives on the interface must have the resistor pack removed (see Figure 1-6).
JJ
READ /WRITE
II:
WQ
~<
QW
__, r
HEAD
CONNECTDRS1 ' , l
111111111,
TP2
e
TP4
e
L____J L____J
P5
P6
0
TP10
e
0
TPl
e
TP3
e
TP12
e
e
TPB
PROG
R
AMMABLE
-
SHUNT
~
SOCKET
(1 El
J1 IN
TE
RFACE
CONN ECTION
e
TP5
tr=il
r;g
TP 1
J
~
~::::~ UMPER
TP7
e
~
TPG
e
//1
✓1
c'c
a
oooo
,;
~t
~
~~
h~~
Y-'
2
0
000
0000
L\11111111
.
11111 llf 1111111
l!!!!(Y-~o~~~gOR
• UNUSED
1/0
INTERFACE
CONNECTIONS
TERMINATOR
SOCKET
(2F
)
Figure 1-6
. . . .
"'
"
"
II:
>--
1
e_<?_~g
1
Logic Printed Circuit Board Assembly
1-13
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