Viewing The Test Log; Diagnostic Error Message Tables; Power Checkout - IBM xSeries 200 Hardware Maintenance Manual

Viewing the test log

The test log records data about system failures and other
pertinent information. The test log will not contain any
information until after the diagnostic program has run.
Note: If you already are running the diagnostic programs,
begin with step 4
1. Insert the IBM Enhanced Diagnostics CD.
2. Turn on the system and watch the screen.
If the system is on, shut down your operating system
and restart the system.
3. If a power-on password is set, the system prompts you
for it. Type in the appropriate password; then, press
Enter.
4. Run the appropriate diagnostics program and when the
Diagnostic Programs screen appears, select Utility.
5. Select View Test Log from the list that appears; then,
follow the instructions on the screen.
6. You can save the test log to a file on a diskette or to
your hard disk drive.
Note: The system maintains the test-log data while the
system is powered on. When you turn off the
power to the server, the test log is cleared.

Diagnostic error message tables

For descriptions of the error messages that might appear
when you run the diagnostic programs, see "Diagnostic
error codes" on page 103. If diagnostic error messages
appear that are not listed in those tables, make sure that
the server has the latest levels of BIOS, Advanced System
Management Processor, ServeRAID, and diagnostics
microcode installed.

Power checkout

Power problems can be difficult to troubleshoot. For
instance, a short circuit can exist anywhere on any of the
power distribution busses. Usually a short circuit will cause
the power subsystem to shut down because of an
overcurrent condition.
A general procedure for troubleshooting power problems is
as follows:
1. Power off the server and disconnect the AC cord(s).
2. Check for loose cables in the power subsystem. Also
check for short circuits, for instance if there is a loose
screw causing a short circuit on a circuit board.
Chapter 3. Diagnostics
17