Fujitsu SPARC M10-1, Service Manual

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Table 13-1
Maintenance types of PSU backplane
Active/hot Inactive/hot
(system
stopped/hot)
Inactive/cold
(system
stopped/cold)
- - OK
Caution -
To completely shut down the system, all the power cords must be
removed. If the power cords are not removed, an electrical failure may occur.
XSCF>
showlogs error
maintenance, see " 4.3 Understanding Types of Maintenance ."
13.2.2 Precautions for replacement
Note the following points when you replace the PSU backplane:
■
If you replace the motherboard unit and the PSU backplane at the same time, the
system may fail to operate correctly. Replace the motherboard unit or the PSU
backplane, and then execute the showhardconf or showstatus command to verify
that the replaced Field Replaceable Unit (FRU) is fully operational. Then, replace
the other FRU.
13.3 Enabling the Removal of the PSU
Backplane
This section describes the preparations that must be completed prior to the removal
of the PSU backplane.
1.
Open the rack door.
2.
Log in to the XSCF shell.
3.
Execute the showlogs command to identify the maintenance-target PSU
backplane.
For details, see " 3.3.5 Checking log information ."
4.
Confirm the hardware and software configurations.
For details, see " 4.2 Confirming the System Configuration ."
5.
Stop the system.
For details, see " 5.2 Stopping the System ."
6.
Remove all the power cords from the power supply unit.
Chapter 13 Maintaining the PSU Backplane 141