TM-5-4210-249-13-P-2

TACTICAL FIRE FIGHTING TRUCK (TFF) MODEL M1142

TECHNICAL MANUAL; OPERATOR’S AND FIELD LEVEL MAINTENANCE MANUAL WITH REPAIR PARTS AND SPECIAL TOOLS LIST (INCLUDING DEPOT REPAIR PARTS AND SPECIAL TOOLS); PART 2 OF 4

TM-5-4210-249-13-P-2 - Page 651 of 1452

TM 5-4210-249-13&P-2

0173-21

DRAFT

0173

TFFT04739

Step 31.

Turn battery disconnect switch to OFF position (WP 0007).

Remove and install

SINCGARS radio and two-way radio interface wire harness connectors RADIO B and

RADIO A on original positions. Remove SINCGARS receiver transmitter and power

adapter from electronic mounting base (TM 11-5820-890-10).

Disconnect SINCGARS

radio interface wire harness connectors from electronic mounting base and intercom

(WP 0462).

With a lead test set, check for continuity across SINCGARS radio interface

wire harness receive audio Lo wire (violet) from intercom connector, terminal 7 to

SINCGARS radio interface wire harness connector, terminal A.

If there is no continuity, repair receive audio Lo wire if repairable

(TM 9-2320-325-14&P), or replace SINCGARS radio interface wire harness

(WP 0462).

Step 32.

Check for continuity across SINCGARS radio interface wire harness receive audio Hi

wire (blue) from intercom connector, terminal 6 to SINCGARS radio connector,

terminal K.

a.

If there is continuity, fault is in SINCGARS electronic mounting base,

power adapter, or receiver transmitter.

Notify Supervisor.

b.

If there is no continuity, repair receive audio Hi wire if repairable

(TM 9-2320-325-14&P), or replace SINCGARS radio interface wire

harness (WP 0462).

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION