Replacement of Fuse Fl

TM 11-5895-1179-13 EE132-EA-OMP-010/E106 KY883 TO 31S1-2GSC-161

4-5.

Replacement of Fuse Fl

The fuseholder is mounted on the front panel assembly (figure 2-1). The spare fuse is mounted on the mounting plate

(figure 5-5). To replace the fuse Fl, proceed as follows:

WARNING

Set ON/OFF switch -to OFF before opening the front panel assembly. When removing the spare fuse use

caution to avoid touching the heat sink on the power supply plug-in-circuit card assembly (A4).

Release the four front panel assembly fasteners (figure 2-1) and lower the front panel assembly. Remove the

spare fuse from its holder. -Close and secure the front panel assembly. . Remove the fuseholder cap

(quarter turn CCW) and pull the defective fuse out of the cap.

Remove the fuseholder cap (quarter turn CCW) and pull the defective fuse out of the cap.

Push the replacement fuse into the fuseholder cap until it seats properly.

d..

Replace the cap in its receptacle and turn a quarter turn CW to lock.

4-6.

Replacement of Mode Select Switch and FUNCTION Select Switch Knobs

To replace the ENCODER MODE select switch knob, the DECODER MODE select switch knob and the FUNCTION select

switch knob (figure 2-1), proceed as follows:

a. Turn the knob to a position for easy access to the knob mounting setscrew (figure 5-3).

b. Loosen the knob mounting setscrew.

c. Remove the defective knob and install replacement.

d. Tighten the knob mounting setscrew. Ensure that the knob mounting setscrew is seated on the flat portion of

the switch shaft and that the knob indicator properly aligns with the markings on the front panel assembly

after replacement.

4-7.

Replacement of Plug-in-Circuit Card Assemblies Al, A2, A3, or A4

To replace the four plug-in-circuit card assemblies Al, A2, A3, or A4 proceed as follows:

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