9
Diagnostics
This section provides basic troubleshooting information to
help you resolve some common problems t hat might occur
with the server.
If you cannot loca te and correct the problem us ing the i nfor-
mation in this section, refer to “Symptom-to-FRU index” on
page 129 for more information.
Diagnostic tools overview
The following tools are available to help you identify and
resolve hardware-related problems:
•PO ST beep codes, error mess ages, and error logs
The power-on self-test (POST) generates beep codes
and m ess ag es to i ndic at e s uc ces sf ul t es t com plet i on or
the detection of a problem. See “POST” for more infor-
mation.
•Diagnostic progra ms and error messages
The server diagnostic programs are stored in upgrad-
able read-only memory ( ROM) on the system board.
These programs are the primary method of testing the
major components of the server. See “Diagnostic pro-
grams and erro r messages ” on page 10 for more i nfor-
mation.
POST
When you turn on the se rver, it perfo rms a series of tests to
check the operation of server components and s ome of the
options installed in the server . This series of tests is called
the power-on self-test or POST.
If POST finishes without detect ing any problems, a single
beep sounds and the first sc reen of the operating system or
application pr ogram appears.
If POST detects a problem, more than one beep sounds and
an er ror me ss ag e appe ar s on th e sc r een. See “ PO ST b ee p
codes” and “POST error messages” on page 10 for mor e
information.
Notes:
1. If you have a power-on password set, you must type
the password and press Enter, wh en prompted, before
POST will continue.
2. A single problem might cause several error mes-
sages. When this occurs, w ork to correct th e cause of
the first error message. After you correct the cause of
the first error message, the other error messages usu-
ally will not occur the next time you r un the test.
POST beep codes
POST generates beep codes to in dicate successful compl e-
tion or the detection of a problem.