Figure 2-41. System power fault LED Flowchart

TM-11-5830-263-20&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 SYSTEM

YES

POWER FAULT LED

REPLACE DEFECTIVE MCS.

ILLUMINATE.

END

DISCONNECT ALL HIGHWAY CABLES FROM ALL VIS UNITS.

RECONNECT HIGHWAY CABLES ONE AT A TIME STARTING

WITH TOP STATION CONNECTOR ON MCS AND

FOLLOWING THE SYSTEM CONFIGURATION DIAGRAM FOR

*NOTE

THE SPECIFIC VEHICLE (SEE SECTION II) UNTIL POWER

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

FAULT LED ILLUMINATES*

with the top STATION connector on the MCS and

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

CHECK CABLE FOR SHORT CIRCUIT BETWEEN PIN D (SYS

the MCS and connect the VIS boxes along that

+28V) AND PIN C (SYS GND).

path

REPLACE DEFECTIVE HIGHWAY

YES

SHORT CIRCUIT

CABLE

PRESENT?

REPLACE DEFECTIVE

END

FFCS/RIT/MOS.

END

Figure 2-41. System power fault LED Flowchart

2-47