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6.1 KEYSTEM NUMBERING
Chapter 6. Locations
All references to the card are made while viewing the
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Figure &I shows the numbers assigned to each keystem.
front of the card with the connector tabs up.
Reference between these numbers and the numbers found
The connector tabs are labeled A through F, from left to
-
in the keyboard location chart on the wiring diagram
right (Figure 6-2, view A). The 30 connections on each tab
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(00.29.10.0)
identify the characters assigned t o the
are separated into 15 connections on the front and 15
keystem.
connections on the back. The front connections are labeled
1, 3, and 5 through 29 (odd numbers). The back con-
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6.2 REED-RELAY CARD
The relay card
is 9
inches by 2 0 inches. There are six
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connector tabs with 30 connections on each tab. The front
of the card is the component side and this is divided into 3 6
blocks. Each block is capable of accommodating up to one
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6-position reed relay or 1 0 components. The top of the
card
is
the edge with the connector tabs (Figure 6-2, view
A).
nections are labeled 2 , 4 , and 6 through 30 (even numbers).
A typical connection would be 1C07. This is card 1,
connector tab C, and connection 07. The block is the
main-component location factor. Blocks are labeled (left t o
right and top t o bottom) with block 01 in the upper
left-hand corner and block 3 6 in the lower right-hand
corner (Figure 6-2, view A). The full designation of a block
is 101, 102, etc. The high-order digit represents the card
number; when two cards are in the machine, the block is
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I:igurc 6-1. Combination and Numcric Kcystcm Numbering
Refer
in
Wiring Diagram
f a
Characters By Stems.
29FEMM
(4169)
6-1
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