IBM 865951Y Hardware Maintenance Manual - Page 17

Power-on self-test POST, Con s PCI adapters

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The server diagnostic test programs can identify most problems associated with major components of the server: the system board, Ethernet controller, video controller, RAM, diskette drive, serial port, parallel port, keyboard, and mouse. You can start the diagnostic test programs from the Startup panel, when the message Press F2 for Diagnostics appears. Test options let you batch groups of tests, specify test parameters (for example, which memory DIMM you want to test), and specify the number of passes that you want to run (1 through 9999). You can also view the server configuration information from the Diagnostic Utility menu. For example, you can view the interrupt request (IRQ) and direct memory access (DMA) assignments, memory usage, device drivers, and so on. Power-on self-test (POST): When you turn on the server, it performs a series of tests to check the operation of server components and some options. This series of tests is called the power-on self-test, or POST. POST does the following: Checks the operation of some basic system board operations Checks the memory Compares the current server configuration with the stored server configuration information Configures PCI adapters Starts the video operation Verifies that drives (such as the diskette, CD-ROM, and hard disk drives) are connected properly If you have a power-on password or administrator password set, you must type the password and press Enter before POST will continue. While the memory is being tested, the amount of available memory appears on the screen. These numbers advance as the system progresses through POST and the final number that appears on the screen represents the amount of memory available. If POST finishes without detecting any problems, a single beep sounds, the POST OK on the front LED panel comes on, and the first screen of the operating system or application program appears. If POST detects a problem, an error message appears on the screen. A single problem can cause several error messages to appear. When this occurs, work to correct the cause of the first error message. After the cause is corrected, the other error messages probably will not appear the next time you turn on the system. Netfinity 5000 - Type 8659 9

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The server diagnostic test programs can identify most
problems associated with major components of the server:
the system board, Ethernet controller, video controller,
RAM, diskette drive, serial port, parallel port, keyboard,
and mouse.
You can start the diagnostic test programs from the
Startup panel, when the message
Press F2 for
Diagnostics
appears.
Test options let you batch groups of
tests, specify test parameters (for example, which memory
DIMM you want to test), and specify the number of passes
that you want to run (1 through 9999).
You can also view the server configuration information
from the Diagnostic Utility menu.
For example, you can
view the interrupt request (IRQ) and direct memory access
(DMA) assignments, memory usage, device drivers, and so
on.
Power-on self-test (POST):
When you turn on
the server, it performs a series of tests to check the
operation of server components and some options.
This
series of tests is called the power-on self-test, or POST.
POST does the following:
±
Checks the operation of some basic system board
operations
±
Checks the memory
±
Compares the current server configuration with the
stored server configuration information
±
Configures PCI adapters
±
Starts the video operation
±
Verifies that drives (such as the diskette, CD-ROM,
and hard disk drives) are connected properly
If you have a power-on password or administrator
password set, you must type the password and press
Enter
before POST will continue.
While the memory is being tested, the amount of available
memory appears on the screen.
These numbers advance
as the system progresses through POST and the final
number that appears on the screen represents the amount
of memory available.
If POST finishes without detecting
any problems, a single beep sounds, the POST OK on the
front LED panel comes on, and the first screen of the
operating system or application program appears.
If POST detects a problem, an error message appears on
the screen.
A single problem can cause several error
messages to appear.
When this occurs, work to correct
the cause of the first error message.
After the cause is
corrected, the other error messages probably will not
appear the next time you turn on the system.
Netfinity 5000 - Type 8659
9