IBM 7870B4U Service Manual page 18

5. Check for service bulletins.
6. Check for and replace defective hardware.
4
BladeCenter HS22 Type 7870, 1936, and 1911: Problem Determination and Service Guide
Many configuration problems are caused by loose power or signal cables or
incorrectly seated adapters. You might be able to solve the problem by
turning off the blade server, reconnecting cables, reseating adapters, and
turning the blade server back on.
If the problem is associated with a specific function (for example, if a RAID
hard disk drive is marked offline in the RAID array), see the documentation
for the associated controller and management or controlling software to
verify that the controller is correctly configured.
Problem determination information is available for many devices such as
RAID and network adapters.
For problems with operating systems or IBM software or devices, complete
the following steps.
Note: Changes are made periodically to the IBM Web site. The actual
procedure might vary slightly from what is described in this document.
1) Go to http://www.ibm.com/systems/support/.
2) Under Product support, click BladeCenter.
3) From the Product family list, select BladeCenter HS22.
4) Under Support & downloads, click Documentation, Install, and Use to
search for related documentation.
IBM service bulletins document known problems and suggested solutions. To
search for service bulletins, complete the following steps.
Note: Changes are made periodically to the IBM Web site. The actual
procedure might vary slightly from what is described in this document.
a. Go to http://www.ibm.com/systems/support/.
b. Under Product support, click BladeCenter.
c. From the Product family list, select BladeCenter HS22.
d. Under Support & downloads, click Troubleshoot.
If a hardware component is not operating within specifications, it can cause
unpredictable results. Most hardware failures are reported as error codes in a
system or operating-system log. Hardware errors are also indicated by light
path diagnostics LEDs.
Troubleshooting procedures are provided on the IBM Web site. A single
problem might cause multiple symptoms. Follow the diagnostic procedure for
the most obvious symptom. If that procedure does not diagnose the problem,
use the procedure for another symptom, if possible. To locate troubleshooting
procedures for your server, complete the following steps.
Note: Changes are made periodically to the IBM Web site. The actual
procedure might vary slightly from what is described in this document.
a. Go to http://www.ibm.com/systems/support/.
b. Under Product support, click BladeCenter.
c. From the Product family list, select BladeCenter HS22.
d. Under Support & downloads, click Troubleshoot.
e. Under Diagnostic, select the troubleshooting procedure for the symptom
that you are observing.