Install guide

ARMY TM 5-6675-308-34
MARlNE C0RPS TM 08837A-34/2
Table 4-22. Computer Power Supply Wiring Harries A3 Wiring Data-Continued
From
To
Branch
Color
1.
2.
NOTES
All wire is MIL-W-16878/4, Type E-22, 19 strands, except wire between A2-30 and
A2-31 which is uninsulated, type S, 22 AWG, solid, soft, tinned.
Termination points A3-1, etc, are located on interconnect printed wiring board as
shown on figure 4-16.
4-17. CDU Maintenance.
a. CDU Testing. Testing is performed using the
PADS test set as described in paragraph 4-10.
b. CDU Repair. CDU repair consists of removal
and replacement of circuit card assemblies, chassis-
mounted components, cover, panel, gasket, and repair
of the flexible harness, Figure 4-17 is an exploded view
of the CDU, Refer to table 3-6 for circuit card identifi-
cation. Replacement of circuit cards are described in
paragraph 3-7.
Before conducting any repairs or perform-
ing any disassembly procedures, make
certain, that PS BATTERY CB1 and VE-
HICLE CB2 circuit breakers are in OFF
position or damage to equipment may
4-140
(1) Control and display unit cover. Remove and
replace control and display unit cover (12, figure 4-17)
as follows:
(a) Removal
1.
2.
3.
4.
Remove 16 screws (29), and washers (30)
securing control and display panel (31) to
control and display unit cover (12). Sepa-
rate control and display unit cover (12)
and control and display panel (31) to per-
mit access to electrical and mechanical
connections.
Remove screw (17) securing terminal lug
). (16) to control and display unit cover (12.
Remove hvo screws (35) and four fiber
washers (33 and 34) securing wiring har-
ness (36) to control and display unit cover
(12).
. .
Tag and unsolder wires connected to au-
dible alarm DS3 (13).
result.