Sun Microsystems SPARC T5120, Руководство по обслуживанию

Страница: 134 / 228

118 Sun SPARC Enterprise T5120 and T5220 Servers Service Manual • July 2009
Note – The firmware configuration variable settings are not stored in the SCC
module. If you replace the motherboard, these settings will become the factory
default settings. If possible, keep a record of any firmware variables that have been
changed from the factory default values so you can configure the new motherboard
with those settings.
Related Information
■
“Remove the Motherboard Assembly” on page 118
■
“Install the Motherboard Assembly” on page 120
▼
Remove the Motherboard Assembly
Caution –
This procedure requires that you handle components that are sensitive to
electrostatic discharge. This discharge can cause server components to fail.
1. Run the ALOM CMT
showrc
command and make a note of any SP variables
that have been modified from the factory default.
2. Stop Solaris OS to get the OpenBoot PROM prompt.
3. Run the
printenv
command to make a note of any OpenBoot PROM variables
that have been modified
4. Power off the server.
See “Removing Power From the System” on page 60 .
5. Remove the server from the rack.
See “Remove the Server From the Rack” on page 64 .
6. Attach an antistatic wrist strap.
7. Remove the top cover.
See “Remove the Top Cover” on page 67 .
8. Remove the air duct.
See “Remove the Air Duct” on page 100 .
9. Remove all PCIe/XAUI riser assemblies.
See “Remove a PCIe/XAUI Riser” on page 102 .