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• See Chapter 3 "Parts listing" on page 29 to determine which components are consumable, structural, or CRU
parts.
• If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
Message
System under recommended voltage for
+3.3 V.
System under recommended +5 V fault.
Power problems
Use this information to diagnose and resolve power problems for the blade server.
IBM updates the support website with the latest tips and techniques that you can use to resolve any
problems. Go to the BladeCenter support search website at http://www.ibm.com/supportportal/ to see if any
service bulletins have been generated. In the Search field, type 7875, retain tip, and chassis.
Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
198
BladeCenter HS23 Blade ServerProblem Determination and Service Guide
Action
Informational only.
Note: If the problem remains, complete the following steps:
1. Reseat the blade server. See "Removing the blade server from the
BladeCenter unit" on page 39 and "Installing the blade server in a
BladeCenter unit" on page 39.
2. Check the function of the shared BladeCenter unit resources. See
"Solving shared BladeCenter resource problems" on page 258.
3. (Trained technician only) Replace the system-board assembly. See
"Removing the system-board assembly" on page 71 and
"Installing the system-board assembly" on page 71.
Informational only.
Note: If the problem remains, complete the following steps:
1. Reseat the blade server. See "Removing the blade server from the
BladeCenter unit" on page 39 and "Installing the blade server in a
BladeCenter unit" on page 39.
2. Check the function of the shared BladeCenter unit resources. See
"Solving shared BladeCenter resource problems" on page 258.
3. (Trained technician only) Replace the system-board assembly. See
"Removing the system-board assembly" on page 71 and
"Installing the system-board assembly" on page 71.
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