Figure 2-44. No communication capability on a radio at more than 1 FFCS but communication over intercom is still possible Flowchart

TM11-5830-263-20&P

START

IS RADIO

MEASURE VOLTAGE RADIO ON/OFF

POWERED?

(PIN C) TO GND (PIN E) AT RADIO

(DISPLAY LIT?)

CONNECTOR OF MCS OR RIT

YES

24 V

CHECK CONTINUITY

PRESENT

OF RADIO CABLE

RADIO ALWAYS

KEYED?

YES

REPLACE

CONNECTED MCS

YES

OR RIT

ONE AT A TIME,

PUT WORK SW ON

REPLACE CABLE

EACH FFCS TO INT

SET WORK SW OF

STILL

SUSPECT FFCS TO

KEYED

FAULT RADIO AND

REMOVE HEADSET

YES

RADIO

VERIFY RADIO AND

YES

KEYED

REPLACE FFCS

ASSOCIATED

COMPONENTS ARE

WORKING IN

ACCORDANCE WITH

MANUFACTURERS

TROUBLESHOOT

SPECIFICATION.

HEADSET

(FIGURE 2-51)

RADIO

TROUBLESHOOT/

YES

REPLACE RADIO

PERFORM A

CONTINUITY CHECK

ON RADIO CABLE(S)

CONNECTED TO MCS

AND/OR RIT(S).

REPLACE DEFECTIVE

FAULT STILL

RADIO CABLE

PRESENT?

ASSEMBLY.

YES

IS RADIO

RIT

CONNECTED TO A

REPLACE RIT

RIT OR THE MCS?

MCS

REPLACE MCS

Figure 2-44. No communication capability on a radio at more than 1 FFCS but communication over

intercom is still possible Flowchart

2-50