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Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
OL-17739-01
Chapter 5 Troubleshooting the System Hardware
Symptoms and Solutions
Ta b l e 5-7 Microprocessor Problems
Symptom Cause and Action
The device emits a continuous
tone during POST, indicating
that the microprocessor is not
working correctly.
1. Correct any errors that are indicated by the LEDs (see the
“Interpreting POST Diagnostic Front Panel LEDs and Beep
Codes” section on page 5-16).
2. Check the microprocessor and the VRM.
Ta b l e 5-8 Console Port (Serial Port) Problems
Symptom FRU or Action
A serial device does not work.
For more information about
the serial port, see the
“Console Port Serial
Connector” section on
page 1-6.
1. Verify the following items:
a. The console device is connected only to the serial port labeled
COM1 or CONSOLE
a. The device is compatible with the WAVE appliance.
b. The device is connected to the correct port (see the “Location
of Ports and Connectors” section on page 1-3).
2. Check for a failing serial device.
3. Check the system board.
Ta b l e 5-9 Software Problems
Symptom Cause and Action
Suspected software problem. 1. To determine if problems are caused by the software, verify the
following items:
a. Your device has the minimum memory needed to use the
software.
b. The software is designed to operate on your device.
c. The software that you are using works on another device.
2. If you received any error messages when using the application,
see the information that comes with the software for a description
of the messages and suggested solutions to the problem.