Sun Oracle Fire X4440, Service Manual

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Chapter 4 Servicing Motherboard Components 4-37
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Gently slide the motherboard to the front and carefully set it down.
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The blind mushroom standoffs must engage the keyhole slots in the tray - align
the tray before moving the tray forward to latch.
[2]
3. Install the 4 screws that secure the motherboard to the bus bar. [3]
Torque screws to 7 inch-pounds (0.8 newton-meters). Use a manual torque driver
settable to 7 inch-pounds (0.8 newton-meters) with a No. 2 Phillip screwdriver.
4. Fasten the captive screw at the front of the motherboard. [3]
5. Carefully connect the power distribution board ribbon cable to the
motherboard. [3]
Make sure it is seated properly.
See Section 5.8.8, “Installing a PDB Cable” on page 5-40 .
6. Reinstall the PCIe risers.
See Section 4.4.2, “Installing a PCIe Riser” on page 4-23 .
7. Reinstall the PCIe cards.
See Section 4.5.3, “Installing PCIe Cards” on page 4-28 .
8. Connect the two drive data cables.
a. Route the cables.
Be careful when routing the drive cables so they are not pinched and are
underneath the ribs on the support.
b. Ensure that the two cables are placed behind the plastic shield between the
CPU and the power supply housing.
Caution – The drive data cables are delicate. Carefully connect them and make sure
that they are seated properly when servicing the motherboard.
9. Reinstall the mezzanine tray.
See Section 4.2.2, “Installing the Mezzanine Tray” on page 4-14 .
10. Return the server to operation.
a. Install the top cover.
See Section 6.1, “Installing the Top Cover” on page 6-2 .
b. Install the server into the rack.
See Section 6.2, “Reinstalling the Server in the Rack” on page 6-3 .