Apple Xserve v22 Replacement Instructions PDF

Xserve (Late 2006)

073-1096 Rev. A

Processor Heat Sink Replacement Instructions

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

Online instructions are available at http://www.apple.com/support/diy/.

Working Safely Inside the Xserve

Always touch the Xserve enclosure to discharge static electricity before you touch any components inside the Xserve. To avoid generating static electricity, do not walk around the room until you have finished working inside the server and have replaced the cover. To minimize the possibility of damage due to static discharge, wear an antistatic wrist strap while you work inside the Xserve.

Warning: Always shut down the Xserve and disconnect the power cords before opening it to avoid damaging its internal components or the components you are installing. Dont open the server while it is turned on. Even after you shut down the Xserve, its internal components can be very hot. Let it cool before you open it.

Tools Required

The following tools are required for this procedure: Phillips #1 screwdriver Antistatic wrist strap (if available) Alcohol wipe for cleaning processor (supplied with the part) Thermal grease syringe for replacing thermal grease on processor (supplied with the part)

Removing the Xserve from a Rack Alert users that the server will be unavailable for a period of time.

Shut down the Xserve (see the Xserve Users Guide for help) and then wait to let the Xserve internal components cool.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions

Warning: Always shut down the Xserve before opening it to avoid damaging its internal components or the components you want to install or remove. Dont open the Xserve or try to install or remove items inside while it is turned on. Even after you shut down the Xserve, its internal components can be very hot. Let it cool down for 5 to 10 minutes before you open it.

Unplug all cables from the Xserve. Note: If you have trouble releasing a cable from the back panel, try using a small screwdriver or other flat tool to depress the tab on the cable connector.

To avoid inadvertently unlatching a drive module during handling, use the enclosure key to lock the enclosure lock on the front panel.

Touch the servers metal case to discharge any static electricity.

Loosen the thumbscrews at both ends of the front panel.

Grasp the thumbscrews and pull the Xserve forward until the safety latches engage (about halfway out of the rack).

Latches

Thumbscrews

When the safety latches engage, grip the Xserve where it emerges from the rack, press down on the latch tabs with your thumbs, and slide the Xserve the rest of the way out of the rack.

Set the Xserve on a flat surface and unlock it.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions

Opening the Xserve

Loosen the thumbscrews at the back of the top cover and slide the cover back and up to remove it. If you have difficulty removing the cover, check the enclosure lock on the front panel.

Warning: Even after you shut down the Xserve, its internal components can be very hot. Let it cool before you open it.

Important: To minimize the possibility of damage to Xserve components due to static discharge, wear an antistatic wrist strap, if possible, while you work inside the Xserve.

Unscrew the two captive thumbscrews.

Slide the cover back and lift it off.

Removing the Installed Processor Heat Sink

Note: Before you can remove a processor heat sink, you must remove the airflow duct.

Airflow Duct

Loosen the five Phillips screws that fasten the airflow duct to the fan array.

Pull up on either side of the airflow duct, and lift it straight up and out of the Xserve.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions

Caution: Try not to completely remove the screws from the airflow duct. Tiny black rubber washers hold these screws captive on the underside of the airflow duct. If the screws are completely removed, these washers can easily fall into the enclosure and become lost.

Processor Heat Sink

Note: Although the illustrations in this procedure are based on the heat sink that is farthest from the DIMM slots (CPU B), the steps are the same if you are replacing the heat sink for CPU A.

Loosen the four screws securing the heat sink in the order indicated below.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions 5

Important: Each heat sink is connected to the logic board by a small 2-pin thermal sensor cable. Be careful not to pull on the wire as you lift each heat sink enough to disconnect the cable from the logic board.

Slowly lift the heat sink off the processor just far enough that you can reach the sensor cable connector. You might feel some resistance from the thermal grease that binds the heat sink to the processor.

Pull on the connector, not the wires, to disconnect the sensor cable from the logic board.

Lift the heat sink straight up and out of the enclosure.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions

Installing the Replacement Processor Heat Sink

Note: The thermal bond between the processor heat sink and the processor requires thermal grease for proper operation. Every time you remove or replace the processor heat sink, you must replace the thermal grease on the processor below the heat sink. New grease and an alcohol wipe for cleaning off the previous grease are included with the replacement heat sink. Steps 19 below explain how to clean the processor and apply the new grease.

Release the latch on the metal processor holder for the processor.

Rotate the top of the holder to the open position.

Carefully lift the processor out of the holder. Important: When removing or installing a processor, always hold the processor by the edges. Be extremely careful not to touch the gold pins on the bottom of the processor, as this type of connector is very sensitive to contamination. Also be careful not to touch the gold pins in the processor socket on the logic board.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions

Clean off any existing thermal grease on the top face of the processor using the alcohol wipe provided with the replacement part, being careful not to get any thermal grease on the processor contacts.

Apply the contents on a single syringe of thermal grease (approximately 4.5 cc) to the top surface of the processor. Important: Be sure not to get any grease anywhere on the processor other than the very top, flat surface that directly contacts the heat sink.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions

Use the edge of the package that the alcohol wipe came in as a spatula to spread the thermal grease evenly over the entire top surface of the processor. Scrape off any excess grease with the package edge, then discard the package.

Holding the processor by its edges only, replace the processor into its holder on the logic board. Note: When installing the processor on the logic board, align the processor notch with the tab on the processor holder, as illustrated. Then lower the processor straight down onto the socket.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions

Rotate the top of the holder to the closed position.

Engage the latch on the metal processor holder.

Holding the heat sink in one hand, reconnect the 2-pin thermal sensor cable for the heat sink to the logic board. Note: Make sure the connector on the sensor cable is oriented as illustrated, with the gold fingers facing up.

Carefully seat the heat sink over the processor, aligning the four screws with the holes in the logic board.

Tighten the four captive Phillips mounting screws for the heat sink in the order indicated below. Do not over-tighten the screws.

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Xserve (Late 2006) Processor Heat Sink Replacement Instructions 10

Replacing the Airflow Duct

Lower the airflow duct into position on the logic board. Note: When installing the airflow duct, be sure to route both the front panel board cable and the backplane-to-logic board I/O cable inside the channel under the left side of the duct.

Ensure the airflow duct fits flush all over, and does not protrude above the enclosure. Note: Be careful when working with any black foam pieces that are part of the airflow duct or the logic board.

Tighten the five Phillips screws that fasten the airflow duct to the fan array, in the order shown, to prevent the duct from warping. Do not overtighten the screws.

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Closing the Xserve Replace and secure the cover.

Slide the Xserve back into the rack, and tighten the front thumbscrews to secure the Xserve in the rack.

If the server case was locked, use the enclosure key to lock the security lock on the front panel.

Apple Computer, Inc.

2006 Apple Computer, Inc. All rights reserved.

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