Fujitsu M10-4 Service Manual page 291

Chapter 14
Maintaining the PSU Backplane Unit
This chapter describes the procedure for maintaining the PSU backplane unit
mounted in a SPARC M10-4/M10-4S.
Location of the PSU Backplane Unit
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Before Maintaining the PSU Backplane Unit
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Enabling the Removal of the PSU Backplane Unit
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Removing the PSU Backplane Unit
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Installing the PSU Backplane Unit
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Restoring the System
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14.1 Location of the PSU Backplane Unit
This section describes the location of the PSU backplane unit.
The PSU backplane unit has connectors for connecting multiple power supply units.
Caution - Do not replace a PSU backplane unit at the same time as a CPU memory
unit. If you replace a PSU backplane unit at the same time as a CPU memory unit, the
system may fail to operate normally. Replace a PSU backplane unit or CPU memory
unit, and confirm that the newly installed part is normal by using the showhardconf
or showstatus command. Then, replace the other Field Replaceable Unit (FRU).
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