Memory Errors; Recovering The Bios Code - Intel SBXL52 - Server Compute Blade Hardware Maintenance Manual

A blade server error has occurred and you have noted that the blade server blade-error LED is lit on
the blade server control panel. You then:
1. Remove the blade server from the SBCE unit.
2. Place the blade server on a flat, non-conductive surface.
3. Remove the cover from the blade server.
4. Press and hold the light path diagnostics button to relight the LEDs that were lit before you
removed the blade server from the SBCE unit. The LEDs will remain lit for as long as you press
the button, to a maximum of 25 seconds.
NOTE
Power is available to relight the light path diagnostics LEDs for a short period of time after the
blade server is removed from the SBCE unit. During that period of time, you can relight the
light path diagnostics LEDs for a maximum of 25 seconds (or less, depending on the number
of LEDs that are lit and the length of time the blade server is removed from the SBCE unit) by
pressing the light path diagnostics button. The light path diagnostics power present LED
(CR111) lights when the light path diagnostics button is pressed if power is available to relight
the blade-error LEDs. If the light path diagnostics power present LED does not light when the
light path diagnostics button is pressed, no power is available to light the blade-error LEDs
and they will be unable to provide any diagnostic information.
Use the table at "Light path diagnostics" on page 81 to help determine the cause of the error and the
action you should take.

Memory errors

If a memory problem occurs, take the following actions before replacing a DIMM:
1. Reseat both DIMMs in the bank.
2. Check for a memory type mismatch in the bank.
3. Run the diagnostic programs.
For more information about memory, see "Installing memory modules" on page 37

Recovering the BIOS code

If your BIOS code has become damaged, such as from a power failure during a flash update, the
blade server may appear to be nonfunctional (no video, no beeps). You can recover your BIOS code
using the BIOS code page jumper (J12) and a BIOS flash diskette.
NOTE
To obtain a BIOS flash diskette, contact your Intel Support Representative.
The flash memory of your server consists of a primary page and a backup page. The J12 jumper
controls which page is used to start the blade server. If the BIOS code in the primary page is
damaged, you can use the backup page to start the blade server; then, start the BIOS flash diskette to
restore the BIOS code to the primary page.
To recover the BIOS code, complete the following steps:
1. Turn off the blade server.
Diagnostics
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