Figure 3-1. Master Control Station (MCS)

TM 11-5830-263-20&P

LOUDSPEAKER

SYSTEM FAULT

CHANGE

LINES

ACCENT

CABLE TO FFCS, MOS,

RADIO

RIT, & SLIP RING

CABLE FROM

LISTENING

STATION

FUNCTION

SILENCE

RADIO A

PROG 3

ALL

VIEW

PROG 2

CABLE FROM FFCS,

PROG 1

CABLE FROM

MOS, RIT, & SLIP RING

SYSTEM

OFF

RADIO B

SYSTEM

PROGRAM

LINES

ALARMS

LOUDSPEAKER

POWER

CABLE FROM

CABLE TO

VEHICLE PRIME

LOUDSPEAKER

TWISTED-PAIR WIRES

POWER

FROM FIELD TELEPHONE

CABLE FROM

OR OTHER MCS

VEHICLE ALARMS

Figure 3-1. Master Control Station (MCS)

NOTE

Removal and replacement of the LRU's require the use of various size socket wrenches

and open-end wrenches.

3.2.

MCS REMOVAL AND REPLACEMENT (Fig. 3-1)

a. MCS Removal

1. Disconnect and tag the following cables from the MCS: ALARM, LOUDSPEAKER, POWER,

RADIO (A/B), HIGHWAY (connected to the STATION connectors), and twisted-pair wires

(connected to the binding posts). In some vehicles removal of the RADIO cables may require

removing the MCS from the mounting bracket first due to clearance problems.

2. Refer to Table 3-1 and it's corresponding figure at the end of this section and remove

mounting hardware securing the MCS.

3. Remove MCS.

b. MCS Replacement

1. Place MCS in position on studs or plate to be mounted.

2. Refer to Table 3-1 and it's corresponding figure at the end of this section for the proper

mounting sequence and secure MCS.

3. Reconnect the following cables to the MCS: ALARM, LOUDSPEAKER, POWER, RADIO

(A/B), HIGHWAY (connected to the STATION connectors), and twisted-pair wires (connected

to the binding posts). In some vehicles connecting the RADIO cables to the MCS prior to

mounting on the bracket may be required due to clearance problems.

3-2