TM-9-2350-358-BD

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A6

TECHNICAL MANUAL; OPERATOR’S, UNIT, AND DIRECT SUPPORT SUPPORT MAINTENANCE

MARCH 1994

TM-9-2350-358-BD - Page 288 of 343

TM 9-2350-358-BD

13-14.

INTERCOM SYSTEM, INOPERATIVE - CONTINUED

Procedural Steps:

CAUTION

Do not crank or ring the field telephone because damage could occur to the AM-1780 and/or the

entire AN/VIC-1 system.

NOTE

•

If the AM-1780 is not operational, do steps 1,

2, and 5.

•

If one or more of the C-2298 control boxes

becomes inoperable, but AM-1780 is still

operational, do steps 2 through 5.

1.

Run wire in a circle throughout vehicle so that all telephones are connected to the same wire.

2.

Place TA-312 or TA-1 field telephones at station(s) where bad control boxes are located.

3.

Run field telephone wire back to AM-1780.

4.

Hook up WD-1/TT wire to "LINE" jacks of the AM-1780.

5.

Record BDAR action taken.

When mission is complete, as soon as practical, repair the equipment/system using

standard maintenance procedures.

13-20