Transmitter, Radio T-1054(P)/GRC144(V) and T-1054(P)A/GRC-144V) Repairs

TM 11-5820-695-35

(2) Set the POWER ON/OFF switch on meter panel

3-20. Transmitter, Radio T-1054(P)/GRC144(V) and T-

assembly 1A15A8 to ON.

1054(P)A/GRC-144V) Repairs

(3) Make the following checks on T-1054(P)/GRC-

Procedures required to remove or replace parts which are

144(V) :

not obvious or require special handling are given in

(a) The 5 AMP SLO-BLO neon fuse indicator

paragraph 3-21 through 3-37.

Prior to removal or

on meter panel assembly 1A15A8 is not lighted.

replacement of any part in the T-1054 (P)/GRC-144(V) or

(b) All power supply 1A1 indicator lamps are

T-1054(P)A/GRC-144(V) the procedures for power

lighted green.

removal given in paragraph 3-20a unless otherwise

stated, must be performed. Procedures for restoring

frequency synthesizer 1A14 are lighted green.

power are given in paragraph 3-20b. Procedures for

(4) Set the POWER ON/OFF switch on meter panel

removal and replacement of components with rigid

assembly 2A15A2 to on (fig. 3-17).

coaxial cables are covered in TM 11-5820-696-12.

(5) Make the following checks on R1467/GRC-144:

(a) The SLO-BLO POWER 5 AMP and

a. Remove Power.

TDA 1 AMP neon fuse indicators on meter panel

(1) Set the POWER ON/OFF switch on meter panel

assembly 2A15A2 are not lighted.

assembly 2A15A2 to OFF (fig. 3-17).

(b) All power supply 2A1 indicator lamps

(2) Set the POWER ON/OFF switch on meter panel

are lighted green.

assembly 1A15A8 to OFF (fig. 3-1).

(3) Disconnect the external ac po er source cable

electrical frequency synthesizer 2A14 are lighted green.

from AC POWER INPUT connector 1A15A6J18 located

on the top rear section of the electrical equipment cabinet

NOTE

1A15 (fig. 3-7).

b. Restore Power.

Radio communications can normally

(1) Reconnect the external ac power source cable to

be established 5 to 10 minutes after

AC POWER INPUT connector 1A15A6J18 located on top

AN/GRC-144(V) Radio Sets are turned

rear section of electrical equipment cabinet 1A15.

on if the ambient temperature in the

shelter is maintained above +70

Fahrenheit.

Change 6 3-31