TEST OR INSPECTION
Put EMERG MASTER switch to on position (WP 0004). Turn Service Drive Lights on
(TM 9-2320-347-10). Remove and install two-way radio and SINCGARS interface wire
harnesses in original positions. Press intercom RADIO A button. Put siren mode
switch to RADIO position (WP 0004). While an assistant operates two-way radio, check
if two-way radio communications can be heard through siren speaker (WP 0428).
If two-way radio communications can be heard through siren speaker, repair
two-way radio interface wire harness if repairable (TM 9-2320-325-14&P), or
replace two-way radio interface wire harness (WP 0462).