EOL Module Replacement

TM 5-6350-262-14/4

6-9.

EOL Module Replacement

(4)

Interconnecting wire(sa

The need to replace the EOL Module is

considered slight The need could occur if the assembly is

(5)

Input and Filter Assembly.

distorted by overtightening the mounting fastener.

It might

(6) SPU terminal block

occur also if the assembly is damaged by dropping.

Refer to figure 2-3 and replace the EOL as

Refer to figure 2-4 and replace the PWB

follows:

Assembly as follows:

Note

Caution

It is not necessary to turn off Control

Turn off Control Unit power to SPU

Unit power to the SPU. However,

before removing PWB Assembly from

observe that tamper alarm will occur

SPU chassis

when the loop

sensor wires are

(1) Turn off Control Unit power to SPU.

disconnected

(2)

Remove SPU cover.

(1) Remove and retain mourning fastener.

(3)

Remove and retain three board attaching

(2)

Remove EOL Module cover.

screws

(3)

Disconnect loop sensor wires.

(4)

Loosen terminal st .ws and disconnect wires.

(4)

Install replacement EOL Module (para 28d5)

(5)

Install replacement PWB Assembly (para

(5) Perform functional check (para 2-9) or bench

(6) Perform functional check (para 29 and 2-10)

check (para 6 '9).

or bench check (para 6-19)

6-10. Loop Sensor Replacement

6-12. Input and Filter Assembly Replacement

The need to replace the loop sensor is

The Input and Filter Assembly is a separable

contingent upon:

component of the SPU chassis. The need to replace this

(1) Failure to pass a continuity test, and

assembly is contingent upon:

(2)

Inability to locate and repair defect.

(1) Failure to pass a continuity check

Note

(2) No visible broken (repairable) solder

loop

sensor

wire

that

connection.

inadvertently cut through can be

Replace the Input and Filter Assembly as

repaired with an insulated, tubular,

follows:

crimped splice .Damage to insulation

can be repaired with electrician's tape.

(1) Turn off Control Unit power to SPU.

Refer to figure 2-3 and replace the loop sensor

(2)

Remove SPU cover.

as follows:

Note

(3)

Remove PWB Assembly from SPU (para

It is not necessary to turn off Control

611lb

Unit power to the SPU. The broken or

shorted loop sensor wire has caused

(4) Check continuity through Input and Filter

the SPU to output a tamper alarm.

Assembly.(para 6-23-

Therefore, disconnecting the loop

Note. Steps (5) through (9) do not apply if continuity checks

sensor wires from the EOL Module or

out properly. (This would mean replacement rather than

the SPU input will have no further

reinstallation of PWB Assembly)

effect-

(5) Refer to figure 2-3 and disconnect loop sensor

(1) Open EOL Module cover and disconnect loop

wires from input terminals.

wires

(6)

Remove and retain four screws (6, fig. C-1

(2) Remove SPU cover and disconnect loop

sensor wires.

(7)

Remove Input Output Assembly (7) from

chassis (5-

(3) Cut terminals from loop sensor input ends and

remove grommet, if applicable.

(8) Tag and unsolder two lead wires and solder

them to replacement assembly.

Note

Step (5) is not necessary if grommet

(9) Set replacement assembly (7) in chassis (5)

previously used is split type.

and secure with four screws (6-

grominet is not serviceable, it should

be replaced.

(10) Reinstall or replace PWB Assembly, as

applicable.

(4) Remove loop sensor from weapons racks.

(11) Refer to figure 2-3 and connect loop sensor

(5)

Install replacement loop sensor (para 2-8dt

wires to input terminals.

(6) Perform functional check (para 2-9 and 2-10)

(12) Reinstall SPU cover.

6-11. PWB Assembly Replacement

The PWB Assembly must be replaced if a

(13) Perform functional check (para 2-9 and 2-10)

malfunction of the MWS cannot be attributed to (nor be

or bench check (para 6-19w

corrected by replacement of):

6-13. SPU Enclosure Replacement and Repair

(1) Batteries.

Cover. The need to replace the SPU cover should

only occur as a result of tamper damage. Damage resulting

(2)

EOLI Module.

from normal handling accidents should be

(3)

Loop Sensor.

6-4