Diagnostics; Diagnostic Tools Overview; Post - IBM IntelliStation Z Pro Type 6221 Hardware Maintenance Manual

Diagnostics

This section provides basic troubleshooting information to help you identify and
resolve some problems that might occur.
If you cannot locate and correct the problem using the information in this chapter,
see "Symptom-to-FRU index" on page 83 for more information.

Diagnostic tools overview

The following tools are available to help you identify and resolve hardware-related
problems:
v POST beep codes, error messages and error logs
v Diagnostic programs
v Error symptom charts
v System-board error LEDs

POST

When you turn on the computer, the power-on self-test (POST) performs a series of
tests to check the operation of system components and some of the installed
options.
If POST finishes without detecting any problems, the first window of your operating
system or application program appears.
If POST detects a problem, more than one beep might sound, and an error
message appears on the screen, or both.
Notes:
1.
2.
© Copyright IBM Corp. 2002
The power-on self-test (POST) generates beep codes and messages to indicate
successful test completion or the detection of a problem. See "POST" for more
information.
The system diagnostic programs are stored on the Device Drivers and IBM
Enhanced Diagnostics CD. These programs are the primary methods of testing
the major components of the computer. See "Diagnostic programs and error
messages" on page 16 for more information.
This charts lists problem symptoms and steps to correct each problem. See the
"Error symptom charts" on page 21 for more information.
An LED on the system board might be lit to help isolate an error indicated by the
system error LED on the front of the computer. See the "System-board error
LEDs" on page 21 for more information.
If you have a user password set, you must type the password and press Enter,
when prompted, before the operating system will load.
A single problem might cause several error messages. When this occurs, work
to correct the cause of the first error message. After you correct the cause of
the first error message, the other error messages usually will resolve the next
time you run the test.
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