To remove the power board, you must remove the following components as part of preparing the server for power board replacement:
Memory mezzanine (see Remove the Memory Mezzanine Assembly)
PCI mezzanine (see Remove the PCI Mezzanine Assembly)
System Fan 0 (see Remove the System Fan Assembly (Fan Tray 0))
Optical media drive (see Remove the Optical Media Drive)
Motherboard (see Remove the Motherboard Assembly)
Figure 5-11 Removing the Power Board Screws
Note - After replacing the power distribution board and powering on the system, you must run the ALOM CMT setcsn and setcpn commands to set the electronically readable chassis serial number and server part number.
Caution - When performing the following steps, use special care to enter the correct numbers. Once the power distribution board has been programmed with a chassis serial number or server part number, the number cannot be changed.
sc> setsc sc_servicemode true Warning: misuse of this mode may invalidate your warranty. sc> setcsn -c chassis_serial_number Are you sure you want to permanently set the Chassis Serial Number to chassis_serial_number [y/n]? y setcsn: Chassis serial number recorded. sc> setcpn -p chassis_part_number Are you sure you want to permanently set the Chassis Part Number to chassis_part_number [y/n]? y setcpn: Chassis part number recorded. sc> showplatform Sun-Netra-T5440 Chassis Serial Number: chassis_serial_number Domain Status ------ ------ SO Running sc> setsc sc_servicemode false