Chapter 8 I/O Unit Replacement 8-21
8.4.4 Securing the Server
1. Install the I/O unit.
This step includes installing the I/O unit, restoring the cable management arm,
installing the cassettes and connecting the cables to the correct cards. See
Section 8.3.3, “Installing the I/O Unit” on page 8-11.
2. 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 4.4.2, “Powering the
Server On Using Software” on page 4-13.
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.
3. 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.
8.4.5 Accessing the I/O Unit DC-DC Converter Riser
Caution – There is an electrical hazard if the power cords are not disconnected.All
power cords must be disconnected to completely remove power from the server.
1. Power off the server.
This step includes turning the key switch to the Service position, confirming that
the POWER LED is off, and disconnecting power cables. See Section 4.4.1,
“Powering the Server Off Using Software” on page 4-12.
Caution – Use proper ESD grounding techniques when handling components. See
Section 1.1, “Safety Precautions” on page 1-1.
2. Remove the I/O unit.
This step includes disconnecting and labelling the cables connecting to the PCI
cassettes, removing the cassettes, removing the cable management arm, and finally
removing the I/O unit. See Section 8.3.2, “Removing the I/O Unit” on page 8-10.
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