Xserve (Late 2006/Early 2008)
Power Distribution 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 nished 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. Don’t
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 only tool required for this procedure is a Phillips #1 screwdriver. You may also nd a small
atblade screwdriver useful in releasing the connectors on the power distribution board cable.
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 User’s 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. Don’t 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.
073-1103 Rev. B
Unplug all cables from the Xserve. 3.
Latches
Thumbscrews
Unscrew the two
captive thumbscrews.
Slide the cover back and lift it off.
Note: If you have trouble releasing a cable from the back panel, try using a small screwdriver
or other at 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 server’s 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).
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.
Set the Xserve on a at surface and unlock it. 9.
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 diculty 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.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 2
Removing the Installed Power Distribution Board
Pull the handle to unlatch the
power supply and remove it.
Note: Before removing the power distribution board, you must remove the following:
All Apple drive modules•
Both power supplies•
Power distribution board cable•
Airow duct•
Fan array•
Drive interconnect backplane•
Apple Drive Modules
Press the handle on the front of the drive module so that the handle pops out. Then grasp 1.
the drive handle, and pull the drive module out of the Xserve.
Repeat for all other installed drive modules.2.
Power Supplies
Pull the handle to release the rst power supply and slide it out of the bay.1.
Repeat for the second power supply, if installed.2.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 3
Power Distribution Board Cable
Locate the power distribution board cable. 1.
Disconnect the power distribution board cable from its connector on the drive interconnect 2.
backplane.
Disconnect the power distribution board cable from the power distribution board and 3.
remove the cable from the Xserve.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 4
Caution: The power distribution board cable connectors are tight and can be dicult to
disconnect. You may want to use a small atblade screwdriver to gently yet rmly pry outwards
on the cable connector while depressing the cable connector latch with your thumb and
forenger to separate the connectors.
Airow Duct
Loosen the ve Phillips screws that fasten the airow duct to the fan array.1.
Pull up on either side of the airow duct, and lift it straight up and out of the Xserve. 2.
Caution: Try not to completely remove the screws from the airow duct. Tiny black rubber
washers hold these screws captive on the underside of the airow duct. If the screws are
completely removed, these washers can easily fall into the enclosure and become lost.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 5
Fan Array
Loosen the two thumbscrews that secure the fan array to the enclosure. 1.
Note: The thumbscrews are captive; you cannot remove them.
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.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 6
Drive Interconnect Backplane
Release the two locking levers on the front panel board cable connector and disconnect the 1.
cable from the front panel board. Move the front panel board cable out of the way.
Disconnect the backplane-to-logic board I/O cable from the backplane.2.
Release the thumbscrew that secures the backplane to the enclosure. 3.
Note: The thumbscrew is captive; you cannot remove it.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 7
Shift the backplane to the left (towards the enclosure side), in the direction of the arrow 4.
shown, until it clears the four mushroom-shaped standos that hold the backplane in place.
Rotate the backplane up slightly from the logic board side (as shown), and carefully pull the 5.
backplane up and toward the logic board to free it from the standos and four backplane
alignment slots in the enclosure. Be careful not to let any backplane components come into
contact with the standos or the enclosure as you remove the backplane.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 8
Power Distribution Board
Locate the power distribution board. 1.
Release the thumbscrew that secures the power distribution board to the enclosure. 2.
Note: The thumbscrew is captive; you cannot remove it.
Pull the board toward the side of the enclosure in the direction shown, to disconnect it from 3.
its connector on the logic board.
Lift up the board and remove it from the enclosure.4.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 9
Installing the Replacement Power Distribution Board
Lower the replacement power distribution board onto its mushroom standos in the 1.
enclosure.
Slide the board in the direction shown, to connect it to its connector on the logic board. 2.
Tighten the thumbscrew that secures the power distribution board to the enclosure.3.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 10
Replacing the Drive Interconnect Backplane
Lower the backplane into the enclosure at a slight angle (as shown), and carefully align the 1.
front edge of the backplane with the four backplane alignment slots in the enclosure. Be
careful not to let any backplane components come into contact with the standos or the
enclosure as you install the backplane.
Rotate the backplane downward and over the four mushroom-shaped standos. 2.
Slide the backplane in the direction of the arrow shown to fully seat the backplane in the 3.
enclosure.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 11
Tighten the thumbscrew that secures the backplane to the enclosure.4.
Reconnect the backplane-to-logic board I/O cable to the backplane.5.
Reconnect the front panel board cable to the front panel board.6.
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 Airow Duct
Lower the airow duct into position on the logic board. 1.
Note: When installing the airow 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 airow duct ts ush 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 airow duct
or the logic board.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 12
Tighten the ve Phillips screws that fasten the airow duct to the fan array, in the order 3.
Slide the power supply in and
press the handle to seat it.
shown, to prevent the duct from warping. Do not overtighten the screws.
Replacing the Power Distribution Board Cable
Connect the power distribution board cable to its connectors on the drive interconnect
backplane and the power distribution board.
Replacing the Power Supplies
Slide the rst power supply all the way into the bay, and then press the handle to seat it and 1.
lock it in place.
Repeat for the second power supply, if installed. 2.
Replacing the Apple Drive Modules
Slide the rst Apple drive module into its bay until it is rmly seated. Then press the handle 1.
in ush with the front panel.
Repeat for all other installed drive modules.2.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 13
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.
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 eort has been made to ensure that the information in this document is accurate. Apple is
not responsible for printing or clerical errors.
Apple
1 Innite Loop
Cupertino, CA 95014-2084
USA
+ 1 408 996 1010
http://www.apple.com
Apple, the Apple logo, Mac, Macintosh, and Xserve are trademarks of Apple Inc., registered in the
U.S. and other countries.
Xserve (Late 2006/Early 2008) Power Distribution Board Replacement Instructions 14
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