ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
GENERAL SUPPORT MAINTENANCE INSTRUCTIONS
Section 1. GENERAL
computer, computer power supply, CDU, and power
Definition
Column
supply.
Numbers and letters appearing in
Signal
this column are signals and logic
computer consists of performing continuity checks
terms and describe circuit functions
when broken or shorted wires are suspected of causing
when practicable.
a failure during performance of the self-test procedure.
Entries in this column denote point
A computer wire list (table 4-1) is provided for bench
From Compo-
of origin.
nent Pin
testing. Refer to paragraph 4-6 for an explanation of
wire list format and notations. Figure 4-1 identifies
Entries in this column denote point
To Compo-
connector pins and terminal points on the computer.
of termination for items in the From
nent Pin
Component Pin column.
A unique suffix letter A, B, C, etc.
Ref
testing of the computer power supply consists of per-
identifies each wire in a multiwire
forming continuity checks when broken or shorted
connection. The suffix letter S de-
wires are suspected of causing a failure during perform-
fines the shield of wire connected to
ance of the self-test procedure. A schematic diagram of
this pin, not the pin connection.
the computer power supply (figure FO-5) and wiring
data (figure 4-16 and table 4-20) are provided for bench
All wires, except those indicated, are
AWG
testing.
etched circuitry. Standard wire size
for table 4-3 is 22 AWG, except as
noted.
consists of performing continuity checks when broken
Symbols in this column specify con-
Type
or shorted wires or failing switch or relay contacts are
figuration of a wire or wires. In the
suspected of causing a failure during performance of
a b s e n c e of a specific symbol,
the self-test procedure. A CDU wire list (table 4-2) is
stranded insulated wire is intended.
provided for bench testing. Refer to paragraph 4-6 for
For flexible printed wiring, this col-
an explanation of wire list format and notations. Figure
umn is not applicable.
Standard wire color is white for ta-
Color
ble 4-3 except as specifically color-
c o d e d . Numbers are coded to a
power supply consists of performing continuity checks
color as follows:
when broken wires or failing switch or relay contacts
are suspected of causing a failure during performance of
Number
Color
the self-test procedure. A schematic diagram (figure FO-
6) and wire lists (tables 4-3 and 4-4) are provided for
o
Black
bench testing. Refer to paragraph 4-6 for an explanation
Brown
1
of wire list format and notations.
2
Red
Orange
3
through 4-4 contain wire lists for the computer, CDU,
Yellow
4
power supply, and power supply harness assembly. The
following paragraphs define wire list format and nota-
Green
5
tions.
Blue
6
a. Wire List Format. Information contained in the
Violet
7
wire list by column heading is described below:
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