Fujitsu Oracle SPARC M12-2

Chapter 18
Maintaining the Backplane Unit and
PSU Backplane Unit
This section describes the maintenance procedures for the BPU and PSUBP mounted
in the SPARC M12.
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Maintenance Precautions
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Locations of the BPU and PSUBP
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Before Maintenance on the BPU and PSUBP
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Removing the BPU and PSUBP
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Installing the BPU and PSUBP
18.1 Maintenance Precautions
This section describes precautions for maintenance on the BPU and the PSUBP.
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Do not replace the PSUBP and the XSCFU at the same time. If the PSUBP and the
XSCFU are replaced at the same time, the system may fail to operate normally.
When you need to replace the PSUBP and XSCFU, replace one of the units first.
Then, after the XSCF firmware
starts up, power it off again and replace the other
unit.
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Do not mount and use any of the following PSUBP in another chassis:
- the one currently mounted in the SPARC M12-2/M12-2S, or
- one that was once used as a maintenance part
This is because the above PSUBP stores device identification information.
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Before removing the BPU, remove the XSCFU, PCICS, PSU, FAN, FANBPU,
HDDBPU, CMU, XBU, XSCF DUAL control cable, and XSCF BB control cable from
the BPU.
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