GENISYS II System Hardware Installation UNION SWITCH & SIGNAL
SM-6900B Rev. 0.0 August 1999 2-7
2.2.2 Keying Plug Installation
Each of the GENISYS II cardfile slots includes a 12-way female keying guide next to the 96-pin
buss connector. The guide is used to ensure installation of the proper circuit board in each cardfile
slot after the complete cardfile board configuration has been determined. Each board is equipped
with a corresponding 12-way male keying guide; individual keying tabs are removed at the factory in
a specific pattern for the board part number. Prior to installing a board, insert keying plugs (P/N:
J709146-0473) into the corresponding cardfile motherboard keying guide as shown in Figure 2-4
and as listed in Table 2-1.
If it becomes necessary to change the type of board installed in a given slot, the previously
installed keying plugs can be removed using a knife or a pair of needle nose pliers.
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96-pin (Female)
Connector on
Cardfile
Motherboard
Adjacent
Keying Plug
Connector
(Female)
Keying
Plug
No.
1
2
3
4
5
6
7
8
9
10
11
12
Printed
Circuit
Board
96-pin (Male)
Connector on PCB
Adjacent
Keying Plug
Connector
(Male)
PCB Keying
Tabs Set at
Factory
Insert Keying
Plug J709146-0473
Per Table 2-1
F
IGURE
2-4. C
ARDFILE
S
LOT
K
EYING
P
LUG
I
NSTALLATION
I
!
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--+
--1.::::::;
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