Power Checkout; Recovering Bios - IBM xSeries 200 Hardware Maintenance Manual

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
3. Remove adapters and disconnect the cables and power connectors to all
4. Reconnect the AC cord and power on the server. If the server powers up
To use this method it is important to know the minimum configuration required
for a server to power up (see page 97).

Recovering BIOS

If the BIOS code has become damaged, such as from a power failure during a flash
update, you can recover the BIOS code using a BIOS flash diskette.
You can obtain a BIOS flash diskette from one of the following sources:
v Use the ServerGuide program to make a BIOS flash diskette.
v Download files from the World Wide Web to make a BIOS flash diskette. Go to
Complete the following steps to recover the BIOS code:
1. When prompted, insert the BIOS flash diskette into the diskette drive.
2. Restart the server. The BIOS begins the power-on self-test.
3. The BIOS flash utility automatically starts.
4. When prompted as to whether you want to save the current code to a diskette,
5. When prompted, press Y to continue the flash process.
6. The system automatically starts the flash utility a second time.
7. When prompted as to whether you want to save the current BIOS code, stop
8. Restart the server, which should start up normally.
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xSeries 200 Type 8479 and xSeries 200VL Type 8481: Hardware Maintenance Manual
instance if there is a loose screw causing a short circuit on a circuit board.
internal and external devices until server is at minimum configuration required
for power on (see "Minimum operating requirements" on page 97).
successfully, replace adapters and devices one at a time until the problem is
isolated. If server does not power up from minimal configuration, replace FRUs
of minimal configuration one at a time until the problem is isolated.
http://www.ibm.com/pc/support/ select IBM System Support, and then make
the selections for your system.
select N.
the process by removing the BIOS flash diskette from the diskette drive.