Caution- Do notreplace 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
systemmay fail to operate normally. Replace a PSU backplane unit or CPU memory
unit,an dc onfirm that the newly installed part is normal by using the showhardconf
orsh owstatus command. Then, replace the other Field Replaceable Unit (FRU).
Chapter 14Maintaining the PSU Backplane Unit
Thischapter describes the procedure for maintaining the PSU backplane unit
mountedin a SPARC M10-4/M10-4S.
■Location of the PSU Backplane Unit
■BeforeMaintaining the PSU Backplane Unit
■Enablingthe Removal of the PSU Backplane Unit
■Removingthe PSU Backplane Unit
■Installing the PSU Backplane Unit
■Restoringthe System
14.1 Location of the PSU Backplane Unit
Thissection describes the location of the PSU backplane unit.
TheP SU backplane unit has connectors for connecting multiple power supply units.
265