8-12 SPARC Enterprise M4000/M5000 Servers Service Manual • December 2010
8.3.4 Securing the Server
1. Power on the server.
This step includes reconnecting power cables, verifying the state of the LEDs, and
turning the keyswitch to the Locked position. See Section 4.4.1, “Powering the
Server Off Using Software” on page 4-12.
Note – If the Oracle Solaris automatic booting is set, use the sendbreak -d
domain_id command after the display console banner is displayed but before the
system starts booting the operating system to get the ok prompt.
2. Confirm the hardware.
This step includes running programs to be certain all components are mounted
again and then booting the operating system.
Refer to Section 4.3.2, “Verifying Hardware Operation” on page 4-9 for more
information.
8.4 I/O Unit DC-DC Converter Replacement
The DC-DC converters are cold replacement components. This means the entire
server must be powered off and the power cords disconnected to replace a DC-DC
converter on the I/O unit.
FIGURE 8-8 shows the location of the I/O unit DC-DC converter, the DC-DC Converter
Connector, and the DC-DC Converter Riser.
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