These procedures describe the removal and replacement of the voltage
regulators in IBM® servers.
These procedures apply to the following servers:
- IBM eServer™ i5 and eServer p5 model 55x
- IBM System p5® 55x
- IBM eServer OpenPower® 720
The server contains either one or two system processor assemblies.
Some models have voltage regulator modules that cannot be removed from the
system processor assembly. To replace these voltage regulator modules, you
replace the system processor assembly. Other models have voltage regulator
modules that are separately installed with connector tabs. These can be removed.
The system processor assembly as shown in
Figure 1 contains
two
voltage regulator modules: 1.5 V dc and 2.5 V dc. If you have
identification LEDs for failing voltage regulator modules as shown in this
figure (these are labeled VRAM and are located on the top of the system processor
assembly), the voltage regulator modules can be removed.
Figure 1. Voltage regulator modules (1.5 V dc and 2.5 V dc).
The system processor assembly
E attaches to the
system backplane
A by connectors
D.
Below each system processor assembly is a 1.2 V dc voltage regulator module
(
B or
C) that also attaches
to the system backplane.
Figure 2. Voltage regulator module
(1.2 V dc)
To complete these procedures, you need to print the following topic and
then return here.
If the IBM Systems Hardware Information Center is
available on a PC or a notebook that is close to the system on which you are
installing or replacing parts, you can use the online version.
To print a PDF of this topic, go to Select by feature or part.The following procedures describe the installation, removal, and replacement
of the voltage regulator module.
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