Chapter 5 Troubleshooting the System Hardware

Symptoms and Solutions

When checking the diagnostic panel LEDs, note the following information:

If a diagnostic panel LED is on and the front panel system error LED is off, there is probably an LED problem. Run the LED diagnostics.

To locate the LEDs on the system board, see Figure 5-1 on page 5-17.

Check the system error log for additional information before replacing a component. (See the “Viewing Error Logs” section on page 5-10.)

The DIMM error LEDs, microprocessor error LEDs, and VRM error LEDs on the system board go off when the system is powered down.

Table 5-7provides the diagnostic panel LED error definitions. The third column lists one or more suggested actions or components that need to be reseated or replaced. Use this table to identify possible causes for the error message and then call your service representative.

Table 5-7

Diagnostic Panel LED Error Definitions

 

 

 

 

 

 

 

Diagnostic Panel

 

 

 

 

LED

 

Description

Cause and Action

 

 

 

 

 

All LEDs off

 

Check system error log for error

1.

System error log is 75% full; clear the log.

 

 

 

 

condition and then clear the

2.

PFA alert; check log for failure; clear PFA

 

 

 

 

system error log when the

 

 

 

 

 

alert; disconnect AC power for at least

 

 

 

 

problem is found.

 

 

 

 

 

 

20 seconds, reconnect, and then power up

 

 

 

 

 

 

 

 

 

 

 

 

the system.

 

 

 

 

 

3.

Run Light Path Diagnostics.

 

 

 

 

 

Fan LED on

 

The LED next to the failing fan is

1.

Failing fan.

 

 

 

 

on.

2.

Check the system board.

 

 

 

 

 

 

 

 

 

Memory LED on

The LED next to the failing

1.

Failing DIMM.

 

 

 

 

DIMM is on.

2.

Check the system board.

 

 

 

 

 

 

 

 

 

 

CPU LED on

 

The LED next to the failing CPU

1.

Verify that all microprocessors have

 

 

 

 

is on.

 

identical cache sizes, dock speeds, and

 

 

 

 

 

 

clock frequencies.

 

 

 

 

 

2.

Check microprocessor 1 or 2.

 

 

 

 

 

3.

Check the system board.

 

 

 

 

 

 

 

 

Cisco Wide Area Application Engine 7326 Hardware Installation Guide

 

 

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Cisco Systems 7326 manual Description Cause and Action

7326 specifications

Cisco Systems 7326 is a powerful networking appliance designed to meet the demands of modern network environments. As part of Cisco's robust series of routers, the 7326 features a variety of capabilities that cater to both enterprises and service providers.

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The Cisco 7326 is built on Cisco’s IOS XR operating system, renowned for its scalability and resilience. This operating system ensures that the router can handle increasing data loads seamlessly, making it suitable for high-traffic environments. Additionally, the IOS XR provides advanced features such as in-service software upgrades, which minimizes downtime during maintenance and enhancements.

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Overall, the Cisco 7326 router exemplifies a blend of performance, security, and scalability, making it a vital component for organizations aiming to maintain a competitive edge in an increasingly digital landscape. With its advanced features and technologies, the Cisco 7326 is well-equipped to handle the challenges of modern networking needs.