IBM HS40 - BladeCenter - 8839, Maintenance And Troubleshooting Manual

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The following illustration shows the LEDs on the I/O board.
BMC error LED (DS7B1)
Primary IDE
error LED (DS2H1) Secondary IDE
error LED (DS6H1)
Processor
board
error LED (DS8A2)
Board error
(DS7A2)
Light path
diagnostics
button (S8A1)
NMI error LED (DS7A3)
Temperature error LED (DS7A4)
I/O board error LED (DS7A1)
Light path
diagnostics LED (green)
(DS8A1)
For example:
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 BladeCenter 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 BladeCenter unit. The LEDs will
remain lit for as long as you press the button, to a maximum of 25 seconds.
Use the table at “Light path diagnostics” on page 86 to help determine the cause of
the error and the action you should take.
Memory errors
If a memory problem occurs, complete the following steps 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 44.
Chapter 3. Diagnostics
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