Chapter 4 Troubleshooting the Installation

Troubleshooting an AC Power Subsystem

Table 4-1 summarizes the function of these indicators.

Table 4-1

AC-Input Power Supply LED indicators

 

 

 

 

 

LED Label

 

Function

State

Description

 

 

 

 

 

AC

 

Input

On

AC power source is present and is

(Left LED)

 

power

 

within specified limits.

 

 

 

 

 

 

 

 

Off

Power source is not within

 

 

 

 

specified limits.

 

 

 

 

 

DC

 

Output

On

Power supply is operating normally

(Right LED)

 

Power

 

in a power-on condition.

 

 

 

 

 

 

 

 

Off

Power supply is operating in a fault

 

 

 

 

condition and shutdown has

 

 

 

 

occurred.

 

 

 

 

 

The following conditions must exist for an AC PEM to operate normally:

The PEM is fully seated in its bay and the ejector levers are secured.

AC-input power is within the required range is correctly connected to PEMs.

The power switch on the PEM is switched on.

The green LEDs labeled AC and DC on the PEM are on.

Follow these steps to help isolate a problem with an AC PEM.

Step 1 If the AC LED is off, verify that the power supply is fully seated in its bay, the ejector levers are flush with the power supply faceplate, and the captive screws are secured.

If the AC LED goes on, go to Step 6.

If the AC LED remains off, go to Step 2

 

 

Cisco XR 12406 Router Installation Guide

 

 

 

 

 

 

OL-13831-01

 

 

4-7

 

 

 

Page 119
Image 119
Cisco Systems XR 12406 manual Summarizes the function of these indicators, LED Label Function State Description