Light path diagnostic LEDs
Light path diagnostic LEDs are a system of LEDs on the BladeCenter unit and the
BladeCenter components that can be used to identify system errors. If the front or
rear system-error LED of the BladeCenter unit is lit, one or more error LEDs on the
BladeCenter components also might be lit. These LEDs help identify the cause of
the problem.
BladeCenter system LED panel
Use the following table to find solutions to problems that are identified by LEDs
on the front and rear BladeCenter system LED panels.
v
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v
See Chapter 3, “Parts listing,” on page 23 to determine which components are CRUs and which components
are FRUs.
v
If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Lit LED
Description
Action
Location
A condition has occurred in the
BladeCenter unit that has caused
the remote system management to
identify the BladeCenter unit as
needing attention.
Look for any information or error LEDs on the
system-LED panels, the modules, and the blade
servers in the BladeCenter unit, and follow the
instructions for those LEDs in this section.
Over-temperature
The system temperature has
exceeded a threshold level.
1.
Determine whether a blower module has failed. If
it has, replace the blower module as soon as
possible, to regain redundancy.
2.
Make sure that the room temperature is not too
high. (See “Features and specifications” on page 4
for temperature information.)
3.
Determine whether a blade server has a lit error
LED. If it does, see the documentation that comes
with the blade server.
4.
Make sure that there is a blade server, module, or
filler installed in each bay
Information
A noncritical event has occurred
that should be looked at, such as
the wrong I/O module inserted in a
bay, or power requirements that
exceed the capacity of the power
modules currently installed.
1.
Check the management module event log for
messages.
2.
Check the LEDs on the BladeCenter unit and the
blade servers to isolate the component.
System error
A critical system error has occurred,
such as nonredundancy on the
power modules or a system error in
a blade server.
1.
Check the management module event log for
messages.
2.
Check the LEDs on the BladeCenter unit and the
blade servers to isolate the component.
v
If the error LED is on a module, follow the
instructions for that LED in “Module LEDs” on
page 18.
v
If the error LED is on a blade server, see the
documentation that comes with the blade server.
Chapter 2. Diagnostics
17
Summary of Contents for 8852 - BladeCenter H Rack-mountable
Page 1: ...BladeCenter H Type 8852 7989 and 1886 Problem Determination and Service Guide...
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Page 3: ...BladeCenter H Type 8852 7989 and 1886 Problem Determination and Service Guide...
Page 24: ...10 BladeCenter H Type 8852 7989 and 1886 Problem Determination and Service Guide...
Page 36: ...22 BladeCenter H Type 8852 7989 and 1886 Problem Determination and Service Guide...
Page 84: ...70 BladeCenter H Type 8852 7989 and 1886 Problem Determination and Service Guide...
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Page 88: ...Part Number 81Y1107 Printed in USA 1P P N 81Y1107...
