Cisco 2505 Specifications download pdf (Page 29)

CHAPTER

Reference 3-1

Reference

This chapter contains information about troubleshooting, enabling booting from Flash

memory, copying to Flash memory, and cable pinouts. For additional information about the

Cisco 2500 series router hardware, refer to the Cisco 2500 Series Hardware Installation

and Maintenance publication.

Note The Cisco 2500 Series Hardware Installation and Maintenance publication is

available on UniverCD or a printed copy can be ordered separately.

Troubleshooting

The key to problem solving in this system is to try to isolate the problem to a speciﬁc

subsystem. By comparing what the system is doing to what it should be doing, the task of

isolating a problem is greatly simpliﬁed.

Troubleshooting might require copying or reloading the operating system image from Flash

memory or testing cables. Flash memory and cable information is included in this chapter.

Check the following items to help isolate the problem:

• With the power switch and OK LED ON (see Figure 3-1), does the fan operate?

If no, suspect the fan or the 12-volt (V) power supply.

• Does the system not boot up, but the OK LED is ON? Suspect the 12V power supply.

• Does the system partially boot, but the OK LED is not ON? Suspect a 5V power supply

failure.

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Cisco 2505 Specifications Page 29