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Chapter 5 Troubleshooting the System Hardware
Power-On Self Test (POST)
5-12
Cisco Wide Area Virtualization Engine 274 and 474 Hardware Installation Guide
OL-17739-01
Power-On Self Test (POST)
This section lists the error codes, error messages, and the various indicator light
and beep sequences that you may encounter during the Power-On Self-Test
(POST) or appliance restart, the probable source of the problem, and steps you can
take to resolve the error condition.
The POST Message Disabled mode suppresses most system messages during
POST, such as the memory count and non-error text messages. If a POST error
occurs, the screen will display the error message. To switch to the POST Messages
Enabled mode during POST, press any key (except F10 or F12). The default mode
is POST Message Disabled.
This section contains the following topics:
• POST Overview, page 5-12
• POST Numeric Codes and Text Messages, page 5-13
• Interpreting POST Diagnostic Front Panel LEDs and Beep Codes, page 5-16
POST Overview
When you power up the device, it performs a series of tests to check the operation
of device components. This series of tests is called the power-on self-test, or
POST.
If POST finishes without detecting any problems, no beeps sound, and the first
screen of your operating system or application program appears.
If POST detects a problem, more than one beep sounds, and an error message
appears on your screen. See the
“POST Numeric Codes and Text Messages”
section on page 5-13 and “Interpreting POST Diagnostic Front Panel LEDs and
Beep Codes” section on page 5-16 for more information.
Note If you have a power-up password or administrator password set, you must enter
the password and press Enter when prompted, before POST will continue.