Apple Xserve DIY Procedure for Logic Board User Manual
Xserve (Late 2006/Early 2008)
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 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.
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 don’t bend or ex 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. 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 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)•
073-1082 Rev. B
Removing the Xserve from a Rack
Latches
Thumbscrews
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.
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 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
rails.
Set the Xserve on a at surface and unlock it. 9.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 2
Opening the Xserve
Unscrew the two
captive thumbscrews.
Slide the cover back and lift it off.
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.
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•
Airow 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.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 3
Power Supplies
Pull the handle to unlatch the
power supply and remove it.
Captive screws
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.
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.
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.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 4
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 aect 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.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 5
Airow Duct
Loosen the ve captive 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 rubber washers can easily fall into the enclosure and become
lost.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 6
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.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 7
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.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 8
Processor Heat Sinks
Note: Server congurations 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.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 9
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.
Xserve (Late 2006/Early 2008) Logic Board Replacement Instructions 10
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