System information

Troubleshooting Hardware and Booting Problems 3-27

Cisco 2500 Series Startup

Table 3-3 outlines the areas where Cisco 4000 and Cisco 3000 series startup problems may occur

and describes solutions to those problems.

Table 3-3 Hardware: Cisco 4000 and Cisco 3000 Series Startup Problems and

Solutions

Cisco 2500 Series Startup

When you start up a Cisco 2500 series router, the following should occur:

• The System OK LED should come on and stay on as long as power is supplied.

• The fans should be operating.

Possible Problem Area Solution

Power and cooling subsystems

Step 1 Check to see whether the blower is operating. If it is not, check the AC

power input, AC power source, router circuit breaker, and power

supply cable.

Step 2 If the system shuts down after being on a short time, check the power

supply. If the power supply appears operational, the router might have

shut down due to overheating. Check the console for error messages

similar to the following:

%SYS-1-OVERTEMP: System detected OVERTEMPERATURE

condition. Please resolve cooling problem

immediately!

Make sure that the fans are working and that there is no air blockage to

cooling vents.

Step 3 If the system partially boots but LEDs do not light, contact your

technical support representative.

NPMs

and cables

1 NPM = network processor module

Step 1

Make sure that NPMs are properly connected to the motherboard

connector.

Step 2 Check the external cables.

Step 3 Check the processor or software for proper conﬁguration.

Step 4 Check the external console connection and verify that the console baud

rate is correct.