REPAIR AND REPLACEMENT - TM-11-5805-688-14-10299

T.O. 31W2-2GSC24-2

TM 11-5805-688-14-1

NAVELEX 0967-LP-545-3010

2. Remove front cover and set aside.

6-20.

REPAIR AND REPLACEMENT.

3. Locate desired card by the numbers etched on

6-21. GENERAL. Repair and/or replace- ment of

bar at middle of card file (figure 6-2). Cards comprising

multiplexer set items subject to corrective maintenance

the multiplexer function are located in the upper

at the organizational/intermediate level are contained in

(MULTIPLEXER) row of card slots, and demultiplexer

paragraphs 6-22 through 6-29. Included are procedures

cards are located in the lower (DEMULTIPLEXER) row

for replace- ment of printed circuit cards, the power

of card slots.

supply, the front panel, front panel lamps and display

LED elements, and the power supply cooling blower.

4. Grasp ejector devices at up- per and lower

Card file backplane wiring repair and paint touchup

corners of desired card, and remove card by lifting

procedures are also included.

ejectors away from card edge.

5. Carefully align replacement card with desired

card slot, ensuring that component side of card faces

right- hand side of chassis.

6. Insert card into card slot until card connector just

meets back- plane receptacle.

Hazardous voltages are

present

within

the

7. Firmly press outer edge of card until card is felt

multiplexer set chassis.

to snap into its mating backplane receptacle.

Un-

less

otherwise

directed,

always set

8. Install front cover and tighten captive screws

POWER CONTROL switch

securing cover to chassis.

to OFF before replacing

multiplexer

set

6-23. POWER SUPPLY. Replace the power supply

assemblies,

assembly as follows:

subassemblies, or parts.

The 115-volt ac is always

applied to the POWER

CONTROL switch on the

front panel when source

power is applied through

Use care when extending and

the power cable to the

rotating the chassis upon its

multiplexer set.

slides.

Extend and/or rotate

chassis slowly and ensure that

6-22. PRINTED CIRCUIT CARD. Replace a printed

slides lock in desired position

circuit card as follows:

before starting power supply

replacement.

1. Loosen the 20 captive screws securing front

cover (figure 6-2) to the chassis.

6-21