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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
“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 “Powering the Server On
Using Software” on page 4-13.
Note – If the 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 “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 “Powering the
Server Off Using Software” on page 4-12.
Caution – Use proper ESD grounding techniques when handling components. See
“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 “Removing the I/O Unit” on page 8-10.