Undetermined Problems - IBM 8677 - BladeCenter Rack-mountable - Power Supply Hardware Maintenance Manual And Troubleshooting Manual

Note: See Chapter 7, "Parts listing, BladeCenter Type 8677 and 1881," on page 77 to determine which components
should be replaced by a field service technician.
Message
Failure reading I2C device. Check
devices on bus 5.

Undetermined problems

Use the information in this section if the diagnostic tests did not identify the failure,
the devices list is incorrect, or the system is inoperative.
Notes:
1. When troubleshooting a BladeCenter problem, you must determine if the
2. Damaged data in CMOS can cause undetermined problems.
3. Damaged data in BIOS code can cause undetermined problems.
Check the LEDs on all the power supplies. If the LEDs indicate the power modules
are working correctly and reseating the BladeCenter components does not correct
the problem, remove or disconnect the BladeCenter components one at a time to a
minimal configuration or until you locate the problem. You do not need to remove
power from the system. Complete the following steps to remove the components.
1. Remove the acoustic attenuation models, if attached.
2. Shut down the operating system on all blade servers.
3. Turn off the blade servers; then, open the release lever on each blade server
4. Disconnect power modules 2, 3, and 4 one at a time. To do this, first remove
5. Disconnect the I/O modules one at a time. To do this, remove all cables
Note: The minimum configuration is:
v 8677 or 1881 unit (media tray may be connected).
v power module in bay 1.
v management module.
The BladeCenter unit can be checked with the management module Web interface
at each stage as components are removed, and will work in the minimal
configuration. If the minimal configuration does not work, do the following.
1. Recheck the management-module network settings.
2. Disconnect the media tray, and slide it out of the bay approximately 1 inch.
Action
1. Reseat the I/O modules.
2. Reseat the management module.
3. Replace the I/O modules.
4. Replace the management module.
5. Replace the midplane.
problem is actually a blade server problem.
v If the BladeCenter unit contains more then one blade server installed and
only one of the blade servers exhibits the symptom, most likely it is a blade
server problem.
v If all blade servers exhibit the same symptom, most likely it is a BladeCenter
unit problem.
and slide it out of the bay approximately 1 inch.
the power cord; then, pull the release lever all the way down. Slide the power
module out of its bay approximately 1 inch.
connected to the I/O module; then, pull the release lever all the way down. Slide
the I/O module out of the bay approximately 1 inch.
Chapter 6. Symptom-to-FRU index
75