Cisco Systems 474, 274 manual Undetermined Problems

Chapter 5 Troubleshooting the System Hardware

Undetermined Problems

Table 5-1	Ethernet Troubleshooting Chart (continued)
Ethernet Controller
Problem		Actions
Data is incorrect or		Check the following:
sporadic.		• Make sure that you are using Category 5 or higher cabling when operating
		the device at 100 Mbps or 1000 Mbps.

•Make sure that the cables do not run close to noise-inducing sources such as fluorescent lights.

The Ethernet	Check the following:
controller stopped	•	Try a different connector on the switch.
working without
	•	Reseat or replace the adapter.
apparent cause.

Undetermined Problems

Use the information in this section if the diagnostic tests did not identify the failure, the devices list is incorrect, or the system is inoperative.

Note Damaged data in CMOS can cause undetermined problems.

Note Damaged data in the BIOS code can cause undetermined problems.

Check the front panel Power LED. If the LED indicates the power supply is working correctly, follow these steps:

Step 1 Power down the device.

Step 2 Make sure that the device is cabled correctly.

Step 3 Remove or disconnect the following devices (one at a time) until you find the failure (power up the device and reconfigure it each time):

•Any non-Cisco devices

•Surge suppressor device (on the device)

	Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
5-6	OL-17739-01