Figure 2-42. ANR power fault LED Flowchart

TM11-5830-263-20&P

START

SWITCH THE MCS OFF AND

BACK ON AGAIN

IF, OVER A PERIOD OF TIME THE

DOES SYSTEM

SYSTEM POWER FAULT LED

POWER FAULT LED

ILLUMINATES AGAIN, REPLACE THE

ILLUMINATE?

MCS.

YES

END

DISCONNECT BOTH HIGHWAY CABLES

FROM STATION CONNECTORS ON MCS.

SWITCH THE MCS OFF AND BACK ON

AGAIN.

DOES ANR POWER

YES

FAULT LED

REPLACE DEFECTIVE MCS.

ILLUMINATE.

END

1. DISCONNECT ALL HIGHWAY CABLES FROM ALL VIS UNITS.

2. RECONNECT HIGHWAY CABLES ONE AT A TIME STARTING

WITH TOP STATION CONNECTOR ON MCS AND FOLLOWING

*NOTE

THE SYSTEM CONFIGURATION DIAGRAM FOR THE SPECIFIC

In a two-branch configuration (e.g., Paladin), start

VEHICLE (SEE SECTION II) UNTIL POWER FAULT LED

with the top STATION connector on the MCS and

ILLUMINATES*

3. DISCONNECT LAST HIGHWAY CABLE CONNECTED WHICH

connect the VIS boxes along that path. Then

CAUSED LED TO ILLUMINATE.

continue with the bottom STATION connector on

4. CHECK CABLE FOR SHORT CIRCUIT BETWEEN PIN E (ANR

the MCS and connect the VIS boxes along that

+28V) AND PIN F (ANR GND).

path

YES

IS SHORT

REPLACE DEFECTIVE HIGHWAY

CIRCUIT

CABLE

PRESENT?

END

1. RECONNECT LAST HIGHWAY CABLE

DISCONNECTED.

2. DISCONNECT HEADSET FROM THIS

FFCS/MOS.

3. SWITCH THE MCS OFF AND BACK ON AGAIN.

YES

DOES ANR

REPLACE DEFECTIVE FFCS/MOS

POWER FAULT

LED ILLUMINATE?

END

TROUBLESHOOT HEADSET. SEE

FIGURE 2-51.

END

Figure 2-42. ANR power fault LED Flowchart

2-48