Step 3: Check the MCS LEDs

Action

To check the MCS status, look at the LEDs on the MCS faceplate.

Table 88 describes the functions of these LEDs.

Table 88: MCS LEDs

Color	Label	State	Description
Blue	MASTER	On steadily	MCS is master.
Green	OK	On steadily	MCS is operating normally.
		Blinking	MCS is starting up.
Amber	FAIL	On steadily	MCS has failed.

When the MCS is functioning normally, the green OK LED remains on steadily. If the amber FAIL LED is on, check for MCS alarms.