v
See Chapter 4, “Parts listing,” on page 41 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.
Symptom
Action
The blade server does not turn
on.
1.
Check the function of the shared BladeCenter unit resources. See “Solving
shared BladeCenter resource problems” on page 227.
2.
Make sure that the power-on LED on the blade server control panel is flashing
slowly. See “Blade server controls and LEDs” on page 11.
v
If the power LED is flashing rapidly and continues to do so, the blade server
is not communicating with the Advanced Management Module; reseat the
blade server. See “Removing the blade server from the BladeCenter unit” on
page 52 and “Installing the blade server in a BladeCenter unit” on page 53.
v
If the power LED is off, the blade server bay is not receiving power, the
blade server is defective, or the LED information panel is loose or defective.
See “Removing the blade server from the BladeCenter unit” on page 52 and
“Installing the blade server in a BladeCenter unit” on page 53.
3.
Check the power-management policies in the operating system for the blade
server. See the
Advanced Management Module User's Guide
for more information.
4.
Check the Advanced-Management-Module log of the corresponding blade
server for an error that is preventing the blade server from turning on. See
“Error logs” on page 103.
5.
Reseat the blade server - See “Removing the blade server from the BladeCenter
unit” on page 52 and “Installing the blade server in a BladeCenter unit” on
page 53.
6.
If you just installed a device in the blade server, remove it and restart the
blade server. If the blade server now starts, you might have installed more
devices than the power to that blade server bay supports.
7.
If you tried another blade server in the blade server bay when you check the
function of the shared BladeCenter unit resources and the other blade server
worked, complete the following tasks on the blade server that you removed:
a.
If an optional expansion unit is installed, reseat it - See “Removing an
optional expansion unit” on page 84 and “Installing an optional expansion
unit” on page 85.
b.
Replace the following components one at a time, in the order shown,
restarting the blade server each time:
1)
Optional expansion unit (if one is installed) - See “Removing an
optional expansion unit” on page 84 and “Installing an optional
expansion unit” on page 85.
2)
(Trained service technician only) System-board assembly - See
“Removing the system-board assembly” on page 97 and “Installing the
system-board assembly” on page 98.
8.
See “Solving undetermined problems” on page 232.
The blade server turns off for
no apparent reason.
1.
Check the function of the shared BladeCenter unit resources. See “Solving
shared BladeCenter resource problems” on page 227.
2.
(Trained service technician only) If the microprocessor error LED is lit, replace
the microprocessor - See “Removing a microprocessor and heat sink” on page
90 and “Installing a microprocessor and heat sink” on page 94.
3.
(Trained service technician only) Replace the system-board assembly - See
“Removing the system-board assembly” on page 97 and “Installing the
system-board assembly” on page 98.
Chapter 6. Diagnostics
177
Summary of Contents for 7870B4U
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