4-27. PRELIMINARY SERVICING AND ADJUSTMENT. (CONT)
Two interlock circuits are located in receiver-transmitter. The first circuit contains two interlock switches that are
activated by closing of receiver and transmitter doors. They are designated S105 XMTR INTLK (1), which is located on
transmitter, and S106 RCVR INTLK (2), which is located on receiver. These two interlocks are in series with DS2
WARNING BUZZER (3) and LOCAL/REMOTE switch located in local control monitor. When LOCAUREMOTE switch is
placed in RT position (local mode of operation) and receiver and transmitter doors are closed, DS2 WARNING BUZZER
will sound alerting personnel that receiver-transmitter has been left in local mode of operation. Ensure LOCAL/REMOTE
switch is returned to IND position before closing receiver and transmitter doors.