Removing The Motherboard Assembly - Sun Microsystems Sun Fire X4450 Service Manual

Caution – This procedure requires that you handle components that are sensitive to
electrostatic discharge. This discharge can cause server components to fail. To avoid
damage, ensure that you follow the antistatic practices as described in
"Performing Electrostatic Discharge and Antistatic Prevention Measures" on
page
Caution – This procedure requires removing the server from the
rack. The server is heavy. Two people are required to remove it
from the rack.
4.8.1

Removing the Motherboard Assembly

You need a No. 2 Phillips screwdriver.
1. Power off the server.
See
2. Remove the server from the rack.
See
3. Attach an antistatic wrist strap.
See
Measures" on page
4. Remove the top cover.
See
5. Remove the memory tray.
See
6. Remove the air duct.
See
7. Remove the PCIe cards and risers.
See
expansion cards in the PCIe risers.
8. Disconnect the power distribution board ribbon cable.
9. If you are replacing the motherboard, remove the memory board tray supports.
Use a No. 2 Phillips screwdriver.
4-30 Sun Fire X4450 Server Service Manual • November 2009
2-9.
Section 2.4, "Powering Off the Server" on page
Section 2.6, "Removing the Server From the Rack" on page
Section 2.7, "Performing Electrostatic Discharge and Antistatic Prevention
2-9.
Section 2.8, "Removing the Top Cover" on page
Section 4.2.1, "Removing the Memory Tray" on page
Section 4.4.1, "Removing the Air Duct" on page
Section 4.5.1, "Removing a PCIe Riser" on page
Section 2.7,
2-3.
2-7.
2-11.
4-11.
4-17.
4-20. Note the location of