Fujitsu SPARC M10-4 Service Manual page 211

Execute the diagxbu command to diagnose the crossbar cables.
XSCF> diagxbu -y -b 00 -t 01
Execute the showlogs command to confirm that the system is operating
normally.
XSCF> showlogs error
Power on the physical partition requiring maintenance.
Close the rack door.
8.7.3 System-stopped maintenance
Connect all the power cords to the PSU backplane unit of the chassis
requiring maintenance.
Note -
Execute the testsb command to confirm that the memory requiring maintenance
is recognized.
XSCF> testsb -a
Start the entire system.
Chapter 8 Maintaining the Memory 187