Apple Xserve v41 Replacement Instructions PDF

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Summary of Content for Apple Xserve v41 Replacement Instructions PDF

Xserve (Late 2006/Early 2008)

073-1082 Rev. B

Logic Board 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.

Important: Hold PCI cards, FB-DIMMs, logic boards, processors, and other printed circuit boards by their edges. Never touch the gold contacts or other exposed metallic components on the boards. Handle the boards gently and dont bend or flex them.

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) 2 thermal grease syringes for replacing processor heat sinks (supplied with the part) 2 alcohol wipes for cleaning processors and heat sinks (supplied with the part)

Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 2

Removing the Xserve from a Rack Alert users that the server will be unavailable for a period of time. 1.

Shut down the Xserve (see the Xserve Users Guide for help) and then wait to let the Xserve 2. internal components cool. 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. 3. 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 4. lock the enclosure lock on the front panel.

Touch the servers metal case to discharge any static electricity. 5.

Loosen the thumbscrews at both ends of the front panel.6.

Grasp the thumbscrews and pull the Xserve forward until the safety latches engage (about 7. halfway out of the rack).

Latches

Thumbscrews

When the safety latches engage, grip the Xserve where it emerges from the rack, press down 8. on the latch tabs with your thumbs, and slide the Xserve the rest of the way out of the rack rails.

Set the Xserve on a flat surface and unlock it. 9.

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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 Logic Board

Before removing the installed logic board, remove the following parts: Both power supplies PCI riser cards and any expansion cards in both slots (if installed) FB-DIMM memory Airflow duct Fan array Backplane-to-logic board I/O cable Both processor heat sinks Both processors Video mezzanine card (if installed)

Note: The replacement logic board does not include the processors, heat sinks, video mezzanine board, memory FB-DIMMs, PCI riser cards, or expansion cards. You must transfer these modules from the original board to the new one.

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Power Supplies

Pull the handle to release the first power supply and slide it out of the bay. 1.

Pull the handle to unlatch the power supply and remove it.

Repeat for the second power supply, if installed.2.

PCI Riser Cards and Expansion Cards

Loosen the two captive screws that secure the riser bracket in slot 1 to the back panel.1.

Carefully pull up on the bracket and riser, with the expansion card still attached, to 2. disconnect the riser from the logic board.

Captive screws

Tilt the expansion card up so that its port clears the enclosure, and remove the card from the 3. Xserve.

Repeat for the riser card in slot 2. 4.

Note: If no risers are installed, remove the blanks held in place by the same screws.

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FB-DIMMs

Push down the ejectors on the FB-DIMM slot.1.

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

Repeat for the other installed FB-DIMMs. 3. Important: The order of the FB-DIMMs in the slots can affect performance. Unless you are sure that all the FB-DIMMs are identical, keep track of which slot you remove each FB-DIMM from so you can return it to the same slot on the replacement logic board.

Warning: When removing or installing the FB-DIMM, handle it only by the edges. Do not touch its connectors. Lift the FB-DIMM straight up from the connector to remove it, and insert it straight down into the connector to install it. Do not rock the FB-DIMM from side to side.

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Airflow Duct

Loosen the five captive Phillips screws that fasten the airflow duct to the fan array.1.

Pull up on either side of the airflow duct, and lift it straight up and out of the Xserve. 2.

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 rubber washers can easily fall into the enclosure and become lost.

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Fan Array

Loosen the two captive thumbscrews that secure the fan array to the enclosure.1.

Lift the fan array to remove it from the Xserve. 2. Note: You may need to move the front panel cable slightly out of the way of the fan array power connector during removal or replacement. Be careful not to pinch the front panel board cable between the fan array and any other surface inside.

Note: You may encounter some resistance around the fan array power connector during removal. If so, carefully rotate the fan array as shown to disconnect it from the power distribution board below, and then lift the fan array out of the computer.

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Backplane-to-Logic Board I/O Cable

Disconnect the backplane-to-logic board cable from the logic board. 1.

Disconnect the backplane-to-logic board cable from the drive interconnect backplane and 2. remove the cable from the Xserve.

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Processor Heat Sinks

Note: Server configurations with a single processor have a regular heat sink and a blank heat sink installed. The blank heat sink is silver colored (as shown below) and should not be removed except when replacing a logic board.

Loosen the four screws securing the heat sink in the order indicated below. If two copper-1. colored heat sinks are installed, you must remove both heat sinks.

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Caution: Whenever you handle a heat sink, handle it from the slotted sides, not the smooth sides. Grasping the smooth sides of the heat sink can compress its ribs causing permanent damage.

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Caution: Each heat sink is connected to the logic board by a small 2-pin thermal sensor 2. cable. Lifting the heat sink too quickly can damage the cable or connector. Because of the tight thermal bond between the processor and heat sink, be especially cautious to initially lift the heat sink no more than one centimeter (1 cm) off the processor. Do not pull on the cable as you lift each heat sink enough to disconnect the cable from the logic board.

Slowly raise the heat sink off the processor just far enough that you can reach the sensor cable connector.

Pull on the connector, not the cable, to disconnect the sensor cable from the logic board. 3.

Lift the heat sink straight up and out of the enclosure.4.

Using the alcohol wipe that came with the replacement processor, clean off any thermal 5. grease from the underside of the heat sink. Save the alcohol wipe package for later.

Note: You will need to clean off the old thermal grease from the bottom of each heat sink and the top of each processor and apply new thermal grease to the processors when you are reassembling the Xserve. For more information, see Replacing the Processor Heat Sinks.

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Processor

Release the latch on the metal processor holder.1.

Rotate the top of the holder to the open position. 2.

Carefully lift the processor out of the holder. 3. Important: When removing or installing a processor, always hold the processor by three corners. 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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Video Mezzanine Card (if installed)

Remove the four 8-5-mm long Phillips screws that secure the mezzanine card to the logic 1. board.

Pull up evenly on all sides of the card to disconnect it from its logic board connector under 2. the card, and remove the card from the Xserve.

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Logic Board

Study the next four images for properly moving the logic board before continuing with the 1. steps.

Caution: When removing and installing the logic board, be careful not to flex the logic board, which could damage the board or its components. To best distribute the weight of the logic board and minimize flexing, grasp the logic board only at the side and the end of the expansion card riser, as shown.

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Caution: When transferring the logic board, be careful not to flex the logic board, which could damage the board or its components. To best distribute the weight of the logic board and minimize flexing, hold the logic board at the long sides near the center, as shown.

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Disconnect the optical drive cable from the logic board.2.

Release the two locking levers on the front panel board cable connector and disconnect the 3. cable from the logic board. Move the cable aside so you have access to the logic board.

Loosen the single thumbscrew on the power distribution board and slide the board away 4. from and out of the connector on the logic board.

Note: Dont remove the power distribution board but make sure its edge connector is all the way out of the connector on the logic board.

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Following the order shown, loosen the nine thumbscrews that secure the logic board to the 5. enclosure. Note: The thumbscrews are captive; you cannot remove them.

Grasping the logic board only by its expansion card riser and edge as shown, move it 6. forward and up slightly to release it from the rear port openings in the enclosure.

Remove it from the Xserve.7.

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Xserve (Early 2008): Packing the Used Logic Board

Important: This packing procedure applies only to Xserve (Early 2008) logic boards. When packing the logic board, place the board in an antistatic bag and set it component-side up in the return box so that the raised areas on the board fit correctly between the foam supports on the box. Dont bend or flex the logic board.

Holding the board at the long sides, place it in the antistatic bag. 1.

Note that foam supports are glued to the top of the box, as shown. 2.

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Place the logic board in the box, making sure it is component-side up and positioned with 3. the Northbridge heat sink at the back of the box.

Follow any additional return instructions for your region, and close the box.4.

Important: Make sure the foam supports align correctly with the raised areas on the board. When aligned correctly, the box closes easily.

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Installing the Replacement Logic Board

Important: When replacing the logic board, make sure the boards rear port connectors fit through the appropriate openings in the Xserves back panel. Take special care to fit the clear plastic system identifier button through its opening. Dont bend or flex the logic board.

With the front edge of the board raised 12 inches (35 cm), guide the connectors on the 1. back edge of the board into the openings in the back panel of the enclosure, and then lower the front edge of the board into place.

Remove the battery insulator tab from the battery holder on the replacement logic board.2.

Note: Depending on the Xserve model, the battery position may differ from what is shown.

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Following the order shown, use a screwdriver to tighten, but not overtighten, the nine 3. thumbscrews that secure the logic board to the enclosure.

Slide the power distribution board back into place and tighten the thumbscrew. 4. Note: Make sure the edge connector on the power distribution board goes completely into the connector on the logic board. If the power distribution board doesnt slide easily, make sure the thumbscrew is popped up so it doesnt catch on the mounting post beneath the board.

Reconnect the front panel board cable and the optical drive cable to the logic board.5.

Replacing the Video Mezzanine Card

Guide the connector on the back edge of the video mezzanine card through the opening in 1. the back panel of the server.

Position the mounting holes in the card directly over the posts on the replacement logic 2. bard and lower the card onto the logic board. Note: Be sure to press down gently and evenly on the card to seat the connector on its underside to the connector on the logic board.

Replace the four screws3. .

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Replacing the Processors

Unsnap the protective plastic cover from the first processor holder on the replacement logic 1. board, unclip the holder latch, and open the holder.

Plastic protective cover

Holder latchProcessor holder

Using a syringe of thermal grease, apply the entire contents of the syringe (approximately 4.5 2. cc) to the top surface of the processor.

Important: Be sure not to get grease anywhere on the processor other than the very top, flat surface that directly contacts the heat sink.

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Use the edge of the package that the alcohol wipe came in as a spatula to spread the 3. 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 three corners only, keep the processor level as you place it into its 4. holder on the logic board, being careful not to get any thermal grease on the contacts of either the processor or its socket holder.

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Note: When installing the processor on the logic board, align the processor notch with the tab on the processor holder, as shown. Then lower the processor straight down onto the socket.

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Rotate the top of the holder to the closed position.5.

Engage the latch on the processor holder. Repeat the steps above for the second processor.6.

Replacing the Processor Heat Sinks

Holding the heat sink by the slotted sides in one hand, reconnect the 2-pin thermal sensor 1. cable for the heat sink to the logic board. Note: Make sure the connector on the sensor cable is oriented as shown, with the gold fingers facing up.

Carefully seat the heat sink over the processor, aligning the four screws with the holes in the 2. logic board.

Tighten the four captive Phillips mounting screws for the heat sink in the order indicated 3. below. Do not over-tighten the screws. If you have a torque driver, tighten the screws to 8 inch-pounds; otherwise, try to tighten the screws with equal pressure.

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Replacing the Backplane-to-Logic Board I/O Cable

Fold the cable to a 90-degree angle along its creases. 1.

Connect the cable to the logic board first. Then press the adhesive section of the cable onto 2. the enclosure before connecting the other end of the cable to the backplane.

Caution: Make sure the cable is fully seated.

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Replacing the Fan Array

Align the power connector on the fan array with its connector on the power distribution 1. board and lower the array into the enclosure. Push down on the fan array power connector to make sure it is fully seated.

Tighten the screws at the ends of the array. Make sure the large front panel board cable runs 2. above the power connector but below the tab on the top of the power supply.

Replacing the Airflow Duct

Lower the airflow duct into position on the replacement logic board. 1. 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 level of the 2. enclosure. Note: Be careful when working with any black foam pieces that are part of the airflow duct or the logic board.

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Tighten the five Phillips screws that fasten the airflow duct to the fan array, in the order 3. shown, to prevent the duct from warping. Do not overtighten the screws.

Replacing the FB-DIMMs

Important: Be sure to install each FB-DIMM in the slot on the replacement board that is equivalent to the slot you removed it from on the original logic board.

Align the first FB-DIMM with its slot and press down until the latches snap back up into 1. place. Note: The FB-DIMM is designed to fit into the slot only one way. Be sure to align the notch in the FB-DIMM with the small rib inside the slot.

Repeat for the remaining FB-DIMMs.2.

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Replacing the PCI Riser Cards and Expansion Cards

Align the riser with slot 2 on the logic board and press to seat the card. 1.

Tighten the captive screws that secure the riser bracket to the back panel.2.

Repeat for the riser in slot 1.3.

Note: If no risers are installed, install the blanks held in place by the same screws.

Replacing the Power Supplies

Slide the first power supply all the way into the bay, and then press the handle to seat the 1. power supply and lock it in place.

Slide the power supply in and press the handle to seat it.

Repeat for the second power supply, if installed.2.

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Changing the Ethernet ID Label

Replacing the logic board in the Xserve changes its Ethernet ID numbers (MAC addresses) for both Ethernet ports. The new numbers are printed on Ethernet labels packaged with the replacement logic board. After installing the new logic board, place the new Ethernet labels over the original Ethernet numbers on the Xserves ID tab. Be careful to apply the new stickers completely onto the ID tab, smoothing out the labels so that they are completely flush with the tab. Do not leave any part of the labels (such as the corners) sticking up or these might catch and tear in the ID tabs opening in the rear panel when the tab is reinserted into the enclosure.

Closing the Xserve Replace and secure the cover.1.

Slide the Xserve back into the rack, and tighten the front thumbscrews to secure the Xserve 2. in the rack.

If the server case was locked, use the enclosure key to lock the security lock on the front 3. panel.

Warning: Never turn on the server unless all of its internal and external parts are in place and it is closed. Operating the server when it is open or missing parts can damage it or cause injury.

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Using the Updated Server Serial Number

When you use Server Assistant to install Mac OS X Server on an Xserve remotely, you need to enter a password consisting of the first eight digits of the Xserve hardware serial number. After you replace the logic board, the original serial number is no longer valid. Instead, use the serial number 12345678.

For more information about the serial number and installing Mac OS X Server remotely, see Mac OS X Server Getting Started on the Admin Tools disc that comes with the Xserve, and also available at www.apple.com/server/documentation.

Apple Inc.

2006, 2008 Apple Inc. All rights reserved.

Under the copyright laws, this document may not be copied, in whole or in part, without the written consent of Apple.

Every effort has been made to ensure that the information in this d

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