Cisco Systems CGS 2520 manual Power Supply Module LEDs, Alarm LEDs, Console LEDs

Chapter 1 Product Overview

LEDs

1. POST = power-on self-test.

Power Supply Module LEDs

The switch power supply module LEDs are labeled PSU1 and PSU2 (on the switch) and PSU OK (on the power supply module). They show whether power supply modules 1 and 2 are receiving power. See Figure 1-6and Figure 1-9.

Table 1-4	Power Supply Module LEDs
Color		System Status
Off		Power supply module (1 or 2) is not installed
Green		Valid input is present, and the output is within the operating range
Red		Valid input is present, and the output is outside the operating range or is not present
Blinking red		Valid input is not present

Alarm LEDs

Table 1-5	Alarm Input LEDs
Color			System Status
Off			No alarm
Amber			Minor alarm
Red			Major alarm
Blinking red			Critical alarm
Table 1-6	Alarm Output LED
Color		System Status
Green		No alarm
Red		Relay closed, alarm present

Console LEDs

The console LEDs show which console port is in use. See Figure 1-6and Figure 1-9for the LED locations.

If you connect a cable to a console port, the switch automatically uses that port for console communication. If you connect two console cables, the USB console port has priority.

	Cisco CGS 2520 Hardware Installation Guide
1-10	OL-31444-01