Chapter 4 Installation and Maintenance

Power Supply Overview

On both the AC-input and DC-input power supplies, the IN LED iis used to monitor the voltages received by the platform from the power source. If the input voltages are within normal operating ranges, the green IN LED is illuminated. If the input voltages are above or below normal ranges, the IN LED is not illuminated.

On both the AC-input and DC-input power supplies, the OK LED is used to monitor the power supply DC output voltages used to power the platform. The normal operating ranges for the 12 VDC output voltage is between 11.9V and 12.1V. If the output voltages are within normal operating ranges, the green OK LED is illuminated. If the 12 VDC output voltages are above (more than 12.1V) or below (less than 11.9V) normal ranges, the OK LED is not illuminated.

The Power A and Power B LEDs on the front panel indicate whether the corresponding power supply unit is functioning normally.

Refer to the following tables for LED status information

Table 4-4 IN LED Status for AC-input and DC-input Power Supply Units

LED State

 

Power Supply Unit Condiiton

 

 

 

On (green)

 

The input voltage is in the required range.

 

 

 

Off

 

The input voltage is not in the required range.

 

 

 

Table 4-5

OK LED Status for AC-input and DC-input Power Supply Units

 

 

 

LED State

 

Power Supply Unit Condiiton

 

 

 

On (green)

 

The output voltage is in the required range (between 11.9 and 12.1 VDC).

 

 

 

Off

 

The output voltage is not within the required range. (is greater than 12.1

 

 

VDC or less than 11.9 VDC)

 

 

 

Table 4-6 Power LED (on front panel) Status for AC-input and DC-input Power Supply Units

LED State

Power Supply Unit Condiiton

 

 

Continuous green

Corresponding power supply unit is present and functioning normally

 

 

Red

Corresponding power supply unit present, but malfunctioning

 

 

Unlit

Corresponding power supply unit is either not present or has failed.

 

 

Note Simple Network Management Protocol (SNMP) monitors the activity of the power supplies. In most cases when a power supply problem occurs, an SNMP trap is sent in SNMP and the appropriate message is posted on the SCE 1000 CLI.

Cisco SCE 1000 2xGBE Installation and Configuration Guide

 

OL-7821-04

4-13

 

 

 

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Cisco Systems SCE 1000 2xGBE, OL-7821-04 manual LED State Power Supply Unit Condiiton

SCE 1000 2xGBE, OL-7821-04 specifications

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