Oracle Sun Fire X4240, Service Manual

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4-28 Sun Fire X4240 Server Service Manual • September 2010
a. Power off the server.
See Section 2.5, “Powering Off the Server” on page 2-4 .
b. Disconnect the power cord (or cords) from the power supply (or supplies).
See Section 2.5, “Powering Off the Server” on page 2-4 .
c. Remove the server from the rack.
See Section 2.7, “Removing a Server From the Rack” on page 2-8 ..
d. Attach an antistatic wrist strap.
See Section 2.8, “Performing Electrostatic Discharge and Antistatic Prevention
Measures” on page 2-10 .
e. Remove the top cover.
See Section 2.9, “Removing the Top Cover” on page 2-12 .
2. Remove the air duct.
See Section 4.2.1, “Removing the Air Duct” on page 4-11 .
3. Remove the PCIe cards and risers.
See Section 4.3.1, “Removing a PCIe Riser” on page 4-15 . Note the location of
expansion cards in the PCIe risers.
4. Disconnect the power distribution board ribbon cable. (
FIGURE 4-14
[1] )
See Section 5.8.3, “Removing a PDB Cable” on page 5-27 .
5. Disconnect the drive data cables.
See Section 1.2.2, “System Cables” on page 1-5 .
Caution – The drive data cables are delicate. Ensure that they are safely out of the
way when servicing the motherboard.
6. Remove the 4 screws that secure the motherboard to the bus bar. [2]
Use a No. 2 Phillips screwdriver.
7. Lift the motherboard tray out of the chassis. [3]
Move the motherboard carefully. Gently slide the motherboard to the rear and
carefully lift it upward.
8. If you are replacing the motherboard only, remove the processors, as required.
See Section 4.8.2, “Removing a Processor” on page 4-37 .
9. Place the motherboard assembly on an antistatic mat.