Apple Logic Board User Manual

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Xserve

Logic Board

Replacement Instructions

Follow the instructions in this sheet carefully. Failure to follow these instructions could
damage your equipment and void its warranty.

Note: Online instructions covering customer-installable parts are available at

http://www.info.apple.com/installparts/.

Tools Required

The only tool required for this procedure is a Phillips screwdriver.

Opening the Server

The server slides open from the front of the rack. The top cover remains in place in the
rack while the bottom housing (containing all internal components) should be placed on a
sturdy, flat surface.

1. Alert users that the server will be unavailable for a period of time.

2. Shut down the server.

Warning: To avoid damaging internal components or causing injury, always
shut down the server before opening it. After you shut down the server, internal
components can be very hot. Let the server cool down before continuing.

073-0665 Rev. D

3. If the server is in the locked position (the yello w security LED on the front panel is on),
use the Allen key that came with the server to unlock it.

4. If the cable management arm is not in use, unplug all external cables except the
power cord.

5. Touch the server’s metal case to discharge any static electricity.

Important: Always ground yourself by touching the server’s case before you touch

any parts or install any components inside the server. To avoid static electricity
building back up in your body, do not walk around the room until you have completed
your work and closed the computer.

6. Unplug the power cord.

Warning: The power supply in the server is a high-voltage component and should
not be opened for any reason, even when the server is off.

7. Release the two thumb screws at the front of the server. (Figure 1)

Note: The thumbscrews are captive and do not separate from the bottom housing.

Figure 1

Xserve Logic Board - 2

8. Grasp the thumbscrews and slide the bottom housing forward part way to expose the
two chassis levers. (Figure 2)

9. While depressing both levers , pull the bottom housing all the w ay forward and remov e
it from the rack.

Figure 2

10. Place the bottom housing on a sturdy, flat surface and ESD mat.

11. Put on the ESD wrist strap.

Xserve Logic Board - 3

Removing the Installed Logic Board

Note: The replacement logic board does not include memory DIMMs or expansion cards.

You must transfer these parts from the current logic board.
To remove the logic board, you must first remove:

• memory DIMMs

• PCI/AGP card risers

• heatsink and processor

• ATA controller board

• power supply

Memory DIMMs

For each installed DIMM, do the following:

1. Push down the ejectors on the DIMM slot. (Figure 3)

2. Holding the DIMM by both top corners, lift it straight up out of the server.

Warning: When removing or installing the DIMM, handle it only by the edges. Do not

touch its connectors. Lift the DIMM straight up from the connector to remove it, and insert
it straight down into the connector to install it. Do not rock the DIMM from side to side.

Figure 3

PCI/AGP Card Risers

Three slots are available for PCI expansion cards. Two slots are on a riser card located at
the back left corner of the logic board; an additional slot is on a riser card at the back right
corner of the logic board. The following instructions explain how to remove both risers.

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Dual-Slot Riser

1. Release the thumb screw that secures the riser’s cards to the server. (Figure 4)

2. If there are latches on either side of the riser, lift them slightly to release the riser from
the logic board.

3. Pull the riser a short distance to the side to disconnect it, and then tilt the riser and
attached cards up so that the card ports clear the enclosure. Remove the riser and
cards from the server.

Figure 4

Single-Slot Riser

1. Release the thumb screw that secures the card to the back of the server. (Figure 5)

Figure 5

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2. Pull the clip on the riser forward to release the riser from the logic board connector.

(Figure 6)

3. Disconnect the riser from the logic board and remove the riser and card from the
server.

Figure 6

Heatsink and Processor, Version 1

Note: There are two versions of the Xserve heatsink and processor. The first version

includes a plastic duct that covers the heatsink. If there is no duct, skip to Version 2.

1. Release the latch on the heatsink duct from its slot, slide the duct away from the
blower, and lift the end of the duct as shown. (Figure 7)

2. Remove the duct from the server.

Figure 7

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