Sun Microsystems Sun Fire V480, Administration Manual

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Chapter 3 Hardware Configuration 43
The functions of the RSC card jumpers are shown in
TABLE 3-4
.
Note –
Do not change the configuration of J0501 and J0502 from the default settings;
otherwise, the RSC card will not boot.
About the Power Supplies
A central power distribution board (PDB) delivers DC power to all internal system
components. The system’s two standard power supplies—called Power Supply 0
and Power Supply 1—plug in directly to connectors on this board, and all of the
supplies installed share equally in satisfying the power demands of the system. AC
power is brought into the PDB by way of two board-mounted IEC320 receptacles,
each dedicated to one power supply.
TABLE 3-4
RSC
Card Jumper Functions
Jumper Shunt on Pins 1 + 2 Selects Shunt on Pins 2 + 3 Selects Default Setting
Not used Disable mirror 2 + 3
Normal booting Not used 1 + 2
FRU PROM
write-enabled FRU PROM
write-protected 1 + 2
3 2 1
J0502
3 2 1
J0501
1 2 3
J0403