Communications

TM 9-2350-238-10 Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR THE RECOVERY VEHICLE M578–CONTINUED Item No. Interval Before Item to Check/Service Communica- tions Procedure NOTE Power at amplifier AM 1780/ VRC must be turned on for crew member intercom set controls to function. a. Turn on MASTER switch and turn on power at amplifier AM 1780- VRC. b. Connect CVC helmet cable con- nectors to CC2298/VRC recep- tacles. Cable with yellow (longer cable) connects to receptacle with yellow mark. c. Check that bail-out connectors (1) are connected firmly. d. Adjust VOLUME knob (2) as d e s i r e d . e. With CVC helmet on, turn on AN/VIC-1 and radio; check inter- com (3) between crew members. Check to make sure vehicle has two-way communications over radio (4). Not fully Mission Capable if: No intercom from commander to driver or no two-way com- munication with out- side station. 2-28