IBM BladeCenter QS20, Problem Determination And Service Manual

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Power problems
Power symptom Suggested action
The blade server does not
turn on.
1. Make sure that:
a. The power-on LED on the front of the BladeCenter unit is lit.
b. The LEDs on all the BladeCenter power modules are lit.
c. If the blade server is in blade bays 7 through 14, power modules are in
power-module bays 1, 2, 3, and 4.
d. The power-on LED on the blade-server control panel is flashing slowly.
v
If the power-on LED is flashing rapidly and continues to do so, the blade
server is not communicating with the management module; reseat the
blade server and go to step 3.
v If the power LED is off, either the blade bay is not receiving power, the
blade server is defective, or the LED information panel is loose or
defective.
e. Local power control for the blade server is enabled (use the BladeCenter
management-module Web interface to make sure), or the blade server was
instructed through the management module (Web interface) to turn on.
f. The blade is installed in any two blade bays except 6/7. This is because blade
bays 1-6 are in power domain one, but blade bays 7-14 are in power domain
two, and the BladeCenter QS20 cannot straddle two power domains. If the
blade is accidentally inserted into blade bays 6/7, see “Why you should not
install the blade server into blade bays 6 and 7” on page 12.
2. If you just installed an option in the blade server, remove it, and restart the blade
server. If the blade server now turns on, troubleshoot the option (see the
documentation that comes with the option for information).
3. Try another blade server in the blade bay; if it works, you need to get a trained
service technician to replace the system blade assembly.
Network connection problems
Network connection
symptom Suggested action
One or more blade servers
are unable to communicate
with the network.
Make sure that:
v
The switch modules for the network interface being used are installed in the
correct BladeCenter bays and are configured and operating correctly.
v
The settings in the switch module are correct for the blade server (settings in the
switch module are blade server specific).
For additional information, see:
v BladeCenter QS20 Installation and User's Guide
v The following documentation:
– IBM BladeCenter (Type 8677) Hardware Maintenance Manual and
Troubleshooting Guide
Note: For the latest editions of the IBM BladeCenter documentation, go to
http://www.ibm.com/pc/support/ on the World Wide Web.
v
Other product-specific documentation that comes with the switch module
If the problem remains, see “Solving undetermined problems” on page 29.
Chapter 2. Diagnostics and troubleshooting
15