IBM BladeCenter HS20 Type 8843, Инструкция по установке и эксплуатации

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Using light path diagnostics to troubleshoot the system board
You have to remove the blade server from the BladeCenter unit, open the cover,
and press the light path diagnostics switch (SW4) to light any error LEDs that were
turned on during processing. These LEDs can be used to help troubleshoot
system-board component problems. See the illustrations in this section, and Table 2
and Table 3 on page 17 for information about locating light path diagnostics LEDs
and what to do if there is an error LED lit. Table 7 on page 65 provides more
information about the light path diagnostics LED locations, settings, and error
solutions. Refer to these illustrations and tables when solving problems with the
blade server.
Power is available to relight the light path diagnostics LEDs for a small period of
time after the blade server is removed from the BladeCenter 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 BladeCenter unit) by pressing the light
path diagnostics button. The light path diagnostics power present LED (CR111) is lit
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 is not lit 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.
The following illustration shows the LEDs on the system board.
Light path diagnostics panel
DIMM 1 error LED
(CR6)
DIMM 2 error LED
(CR5)
DIMM 3 error LED
(CR4)
DIMM 4 error LED
(CR201)
Microprocessor 1 error LED (CR12)
Microprocessor 2 error LED (CR13)
System board fault LED (CR30)
BMC fault LED (CR111)
Table 2. System board LEDs
LED name and location Description
DIMM 1 error LED (CR6)
DIMM 2 error LED (CR5)
DIMM 3 error LED (CR4)
DIMM 4 error LED (CR201)
There is a problem with the corresponding DIMM.
BMC fault (CR11) There is a problem with the BMC.
Microprocessor 1 error (CR12)
Microprocessor 2 error (CR13)
There is a problem with the corresponding
microprocessor.
System board fault (CR30) There is a problem with the system board.
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Eserver
BladeCenter HS20 Type 8843: Installation and User’s Guide