TM 9-2350-267-10
OPERATING COMMUNICATION EQUIPMENT - Continued
Operating AM-1780/VRC
The AM-1780/VRC is the master control for your intercom system. Nothing works
until both drivers MASTER switch and AM-1780/VRC are turned on.
CAUTION
Before starting vehicle engine, make certain MAIN PWR
switch (1) is off. Otherwise, engine start could damage
AM-1780/VRC.
1.
2.
With vehicle power on, set MAIN PWR switch (1) to INT ONLY and POWER
CKT BKR switch (2) to ON. POWER lamp (3) should light.
Leave INT ACCENT switch (4) at OFF, RADIO TRANS switch (5) at LISTEN-
ING SILENCE, and INSTALLATION SWITCH (6) at INT ONLY.
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