Service Source
Mac Pro (8x)
5 April 2007
© 2007 Apple Inc. All rights reserved.
Mac Pro (8x)
Contents
Basics
Overview 6
Identifying the Mac Pro (8x)
Serial Number Location 7
GSX Parts 8
7
Special Handling Instructions 9
Handling Instructions 9
Safety and First Aid Guidelines 10
Disposal Instructions 11
Take Apart
General Information 13
Orientation 13
Tools 13
Dierences Between the Original Mac Pro and Mac Pro (8x) 13
Opening the Computer 15
Hard Drives 17
Optical Drive Carrier and Optical Drives 20
Memory (FB-DIMMs) and Memory Riser Cards 24
PCI Express/Graphics Card 2
Power Supply 33
Power Supply Fan 37
AirPort Extreme Card 4
2
Bluetooth Card 45
Battery 47
Processor Heatsink Cover 49
8
ii
Front Fan Assembly 52
Memory Cage with Rear Fan 57
Processor Heatsinks 62
Processors 71
Speaker Assembly 76
USB Cable 79
Logic Board 81
Front Panel Board 89
Power Button 93
AirPort Antenna Board with Cables 97
Optical Drive Power Cable 101
Optical Drive Data (Ribbon) Cable 104
Ambient Board 106
Ambient Board Cable 108
Bluetooth Antenna Board and Cable 110
Hard Drive Cable Harness 113
Hard Drive Temperature Sensor Cable 115
Hard Drive Temperature Sensor 117
Power Cable Harness 120
Troubleshooting
General Information 126
Memory 126
PCI Express Cards 127
Internal Cabling Matrix 127
Thermal Calibration 129
Resetting the Logic Board 130
Power-On Self Test: RAM and Processor Verication 131
Diagnostic LEDs 132
Power Supply Verication 137
Mac Pro Firmware Updates 137
Processor Heatsink and Processor Visual Inspection Instructions 139
iii
Symptom Charts 142
How to Use the Symptom Charts 142
Startup Failures 142
Fans 145
AirPort Extreme Card 146
Bluetooth Card 147
Other Failures 147
Upgrades
AirPort Extreme Card 151
Bluetooth Card 154
PCI Express/Graphics Card 156
Views
Exploded View 161
External Views 163
Screw Matrix 165
iv
Service Source
Basics
Mac Pro (8x)
© 2007 Apple Inc. All rights reserved.
Overview
The Mac Pro (8x) is the high-end conguration of the original Mac Pro and shares the same form
factor. However, the Mac Pro (8x) conguration features two quad-core Intel Xeon processors,
eectively making it an 8x-processor computer.
Mac Pro (8x) Basics 6
Identifying the Mac Pro (8x)
To identify a Mac Pro (8x) computer, check the computer’s conguration label, which is located
on the computer’s back panel directly below the video ports. Two numbers on the conguration
label identify the computer as a Mac Pro (8x):
On the rst line of the label, the EMC number is listed as “2138”
•
On the second line, the conguration description includes “3.0_8cx”
•
Serial Number Location
The Mac Pro (8x) serial number is located on the conguration label, directly below the
conguration description.
Mac Pro (8x) Basics 7
GSX Parts
Because Mac Pro (8x) is a product conguration of the original Mac Pro, Mac Pro (8x) computers
do not have serial numbers distinct from Mac Pro serial numbers. There is also no separate Mac
Pro (8x) product pull-down list in GSX.
When using a computer’s serial number to look up Mac Pro (8x) parts in GSX, be aware that you
will receive a list of parts for both Mac Pro and Mac Pro (8x). Parts that are unique to Mac Pro (8x)
will have “8x” included at the end of the part description. Parts without “8x” in the description
may be either a) parts unique to the original Mac Pro or b) parts used in both the original Mac
Pro and Mac Pro (8x). To verify that a particular part is used in the Mac Pro (8x), check the GSX
“Notes” eld for the part or the “Exploded View” diagrams in the Views chapter.
Mac Pro (8x) Basics 8
Special Handling Instructions
The Mac Pro (8x) conguration uses a special coating on the processor heatsink and processor
to manage the temperature in the computer. To ensure proper handling and disposal of this
material, please read the following information.
Handling Instructions
Use these guidelines when handling the Mac Pro (8x) processor heatsink and processor:
General
•
Wear disposable nitrile or latex gloves when handling the processor heatsink and processor.
•
Avoid touching the silver coating on the underside of the heatsink and the top of the
processor.
•
Use care when removing the heatsink from the computer. As much as possible, lift the
heatsink straight up o the processor.
•
Use care when removing the processor from the logic board. Lift the processor out of the
processor holder by inserting a nger or atblade screwdriver in the notch at the front of the
holder. Hold the processor only by the edges.
•
When installing a replacement heatsink or processor, remove the protective cover from
the new heatsink or processor and transfer it to the defective heatsink or processor before
packaging it for return to Apple.
Timing
•
When removing or replacing the heatsink and/or processor, do not allow the heatsink to be
separated from the processor for more than 15 minutes. The silver coating on the heatsink
and processor degrades with exposure to air; more than 15 minutes exposure could result
in damage to the computer and a repeat, multi-part repair. Reassemble the computer while
waiting for any new parts to arrive.
•
When installing a new logic board, use care in transferring the heatsinks and processors to
the new board. Do not allow the heatsinks and processors to be separated from the board
or from each other for more than 15 minutes. Reassemble the computer while waiting for a
new logic board to arrive.
Visual Inspection
•
Always make a visual inspection of a new processor or heatsink before installing it in the
computer.
•
Always make a visual inspection of both existing processors and heatsinks before
transferring them to a new logic board.
•
See “Processor Heatsink and Processor Visual Inspection Instructions” in the
Troubleshooting chapter for more information.
Mac Pro (8x) Basics 9
Krytox Thermal Grease
To ensure a proper seal between the heatsink and processor, a bead of Krytox grease rims
•
the gasket on the underside of the heatsink. Replacement heatsinks come with the grease
already applied.
Use the following guidelines for when to reapply Krytox grease to the heatsink. (Refer to
•
“Processor Heatsinks” in the Take Apart chapter for detailed instructions on how to apply or
clean o the grease.)
In most cases, you do not need to reapply Krytox grease when installing a new
-
processor or when transferring processors and heatsinks to a replacement logic board.
If you are installing a new heatsink , remove any residual grease from the outer edges
-
of the processor. Do not apply new grease to the heatsink or processor, as the heatsink
comes with the full capacity of grease applied.
For more detailed information, refer to “Processor Heatsinks” and “Processors” in the Take Apart
chapter.
Safety and First Aid Guidelines
Below is a summary of safety and rst aid measures for exposure to the coating on the processor
heatsink and processor or the Krytox grease used in sealing the processor heatsink to the
processor. For complete instructions, refer to the specic Material Safety Data Sheets (MSDS)
included with the replacement parts.
Safety
Avoid contact with eyes.
Avoid contact with skin.
Wash thoroughly after handling.
Do not store or consume food, drink, or tobacco in areas where they may become
contaminated with the material.
First Aid
Eyes: Immediately ush with plenty of water. If wearing contact lenses, after initial ushing,
remove contact lenses and continue to ush for 15 minutes. Have eyes examined by a
medical professional if irritation persists.
Skin: Wash skin with soap and running water. The recommended ushing is 15 minutes if
pain or irritation occurs. Remove and wash contaminated clothing. Seek medical attention if
irritation or redness develops.
Inhalation: Remove to fresh air. If not breathing, give articial respiration. If breathing is
dicult, give oxygen. Call a physician.
Ingestion: Do not induce vomiting. Contaminated individual should immediately be given
two glasses of water. Never give anything by mouth to someone who is unconscious, having
convulsions, or unable to swallow. Call a physician.
Mac Pro (8x) Basics 10
Disposal Instructions
Place all disposable materials used in removing or replacing a processor heatsink or processor
inside the resealable plastic bag included with the replacement module. (Disposable materials
include such items as protective gloves, alcohol wipes, lint-free cleaning cloths, Krytox grease
and syringe, and heatsink gasket.) Pack this bag along with the failed module in the box that the
replacement module came in, and return the box to Apple.
Mac Pro (8x) Basics 11
Service Source
Take Apart
Mac Pro (8x)
© 2007 Apple Inc. All rights reserved.
General Information
Orientation
For most take-apart procedures, it is recommended that you lay the computer on its side before
removing or installing the part. For proper operation, however, Apple recommends that the
unit be run in the upright position. The computer should never be operated on its side with the
access panel facing down.
Tools
The following tools are required to service all congurations of the computer:
Long-handled magnetized Phillips #1 screwdriver
•
Long-handled magnetized 3 mm athead hex screwdriver
•
Magnetized 2.5 mm hex wrench
•
Flat-blade screwdriver
•
Magnetized jewelers Phillips #1 screwdriver
•
Magnetized jeweler’s Phillips #0 screwdriver
•
Jeweler’s at-blade screwdriver
•
Needlenose pliers
•
Scissors or wire cutters
•
Xacto knife
•
Nylon probe tool (black stick)
•
Tape (for temporarily holding cables out of the way)
•
Small mirror (for seeing small boards inside the enclosure)
•
Soft cloth (for protecting the enclosure from scratches)
•
Differences Between the Original Mac Pro and Mac Pro (8x)
The following are dierences in the take-apart procedures for the Mac Pro (8x), as compared with
earlier Mac Pro congurations. (For detailed information, be sure to refer to the full procedure for
each part.)
Power Supply
The power supply cables are located under a cover at the back wall of the optical drive bay. This
change simplies access to the cable connectors and makes removal of the power supply easier.
Mac Pro (8x) Take Apart — General Information 13
Power Supply Fan
Fully removing the power supply is a preliminary step for removing the power supply fan. The
simplied procedure for removing the power supply therefore simplies removal of the power
supply fan.
Processor Heatsink Cover
When removing the heatsink cover, you no longer have to make room by removing the memory
cage screws and sliding the memory cage toward the back of the computer. The heatsink cover is
held in place with tabs and magnets and comes o easily without any tools.
Front Fan Assembly
The front fan assembly is held in place by two screws: one at the top rear of the assembly that
mounts the assembly to the logic board and a new screw at the bottom front of the assembly.
Once these screws are removed, the front fan assembly can easily be lifted out of the enclosure.
Memory Cage with Rear Fan
The only parts that must be removed before removing the memory cage are the top and bottom
memory cards, any PCI Express card installed in slot 1, and the processor heatsink cover. The rear
fan collapses into the cage, which simplies removal of the cage and fan. In addition, the rear fan
can be removed from the memory cage and is therefore a separate, orderable part.
Processor Heatsinks and Processors
A special coating that helps manage the temperature of the computer comes applied to the
underside of the heatsink and the top of the processor. As a result, several new guidelines are
necessary for handling the heatsink and processor.
Logic Board
Eleven screws secure the logic board to the enclosure. Previous Mac Pro congurations used
eight screws.
Bluetooth Antenna Board and Cable
Because the Bluetooth antenna board cable runs under the logic board, you must remove the
logic board before removing the antenna board and cable.
Parts Requiring Enclosure Replacement
The following are not separate, orderable parts. To replace them, you must replace the enclosure.
Media shelf
•
Rear panel latch
•
Mac Pro (8x) Take Apart — General Information 14
Opening the Computer
Tools
No tools are required for this procedure.
Preliminary Steps
1.
Shut down the computer.
Warning: Always shut down the computer before opening it to avoid damaging its internal
components or the components you are installing. Do not open the computer or attempt to
install items inside it while it is on.
2.
Wait 5 to 10 minutes to allow the computer’s internal components to cool.
Warning: After you shut down the system, the internal components can be very hot. You
must let the computer cool down before continuing.
3.
Unplug all external cables from the computer except the power cord.
4.
Touch the metal PCI access covers on the back of the computer to discharge any static
electricity from your body.
Important: Always discharge static before you touch any parts or install any components
inside the computer. To avoid generating static electricity, do not walk around the room until
you have nished working and closed the computer.
5.
Unplug the power cord.
Warning: To avoid damaging its internal components or the components you want to
install, always unplug the computer before attempting any take-apart procedure.
6.
Put on an ESD wrist strap.
Mac Pro (8x) — Opening the Computer 15
Procedure
Hold the side access panel and lift the latch on the back of the computer.
1.
Warning: The edges of the access panel and the enclosure can be sharp. Be very careful
when handling them.
Remove the access panel and place it on a at surface covered by a soft, clean cloth.
2.
Replacement Note: Make sure the latch is in the up position before replacing the access
panel. If the latch is down, the access panel will not seat correctly in the enclosure.
Mac Pro (8x) — Opening the Computer 16
Hard Drives
The Mac Pro (8x) computer can accommodate four serial ATA (SATA) 3 Gbps hard drives in its four
internal hard drive bays. In most congurations, a single hard drive occupies the far left bay
(bay 1).
The hard drives must meet the following specications:
Type: SATA 3 Gbps
•
Width: 3.9 inches (102 mm)
•
Depth: 5.7 inches (147 mm)
•
Height: 1.0 inch
•
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Important: Make sure the latch on the back panel is in the up position. When the latch is down,
the hard drives and carriers are locked in place and you will not be able to remove them.
Mac Pro (8x) Take Apart — Hard Drives 17
Part Location
Procedure
Make sure the latch on the back panel is up, so that the drives and carriers are unlocked.
1.
Pull the hard drive out of the drive bay.
2.
Mac Pro (8x) Take Apart — Hard Drives 18
3.
If you are replacing the hard drive with a new drive, remove the four screws that mount the
drive to the carrier and mount the new drive in the carrier.
Important: Hold the drive by its sides. Be careful not to touch the printed circuit board on
the bottom of the drive.
Replacement Note: Slide the carrier and drive over the guides and into the drive bay, until you
feel the drive snap into place.
Note: If you install a new (replacement) drive, format it by following these steps:
1.
Open Disk Utility and select the drive in the list to the left.
Note: If you are formatting the primary drive, use the Disk Utility program on the Install Disk.
2.
Click on the Partition tab.
3.
Click on “Options” and verify GUID is selected if this is a bootable drive.
4.
Apply the change by clicking on the “Partition” button.
Mac Pro (8x) Take Apart — Hard Drives 19
Optical Drive Carrier and Optical Drives
The Mac Pro (8x) computer can accommodate two optical drives in the optical drive bay. If the
computer has only one optical drive, it is installed in the top position.
Note: To eject the drives, use the following:
Top drive: Press the Eject key.
•
Bottom drive: Press the Option and Eject keys.
•
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Important: Make sure the latch on the back panel is in the up position. When the latch is down,
the optical drives and carrier are locked in place and you will not be able to remove them.
Part Location
Mac Pro (8x) Take Apart — Optical Drive Carrier and Optical Drives 20
Procedure
Removing the Optical Drive Carrier and Optical Drives
Make sure the latch on the back panel is up, so that the drives and carriers are unlocked.
1.
Pull the optical drive carrier part way out of the computer.
2.
Mac Pro (8x) Take Apart — Optical Drive Carrier and Optical Drives 21
Disconnect the power and ribbon cables from the optical drive(s) and remove the carrier.
3.
If you are replacing the optical drive with a new optical drive, do the following:
4.
Remove the four mounting screws and remove the optical drive from the carrier.
•
Use the four screws to mount the replacement drive in the carrier.
•
Note: If you are adding a second drive to the carrier, use the four screws stored on the back of
the drive carrier to secure the drive to the carrier.
Mac Pro (8x) Take Apart — Optical Drive Carrier and Optical Drives 22
Replacing the Optical Drive Carrier and Optical Drives
Important: Use the original Apple cables that came with the computer when you install or
replace the optical drives. If just one optical drive is installed, tuck the cables for the second drive
out of the way.
Attach the power and ribbon cables to the back of the drive(s).
1.
Important: Attach the connector on the end of the optical drive ribbon cable and the
connector in the middle of the optical drive power cable to the top drive. If there is a second
drive in the carrier, attach the remaining optical drive ribbon and power connectors to the
bottom drive.
Slide the optical drive carrier over the guides and into place in the optical drive bay.
2.
Mac Pro (8x) Take Apart — Optical Drive Carrier and Optical Drives 23
Memory (FB-DIMMs) and Memory Riser Cards
The Mac Pro (8x) computer has two memory riser cards with a total of 8 memory slots. On each
card, the slots are arranged as two banks of two slots each. The computer comes with a minimum
of 1 GB of memory, installed as a pair of 512 MB fully buered, dual inline memory modules (FBDIMMs) in two of the DIMM slots. Additional DIMMs can be installed in the open DIMM slots, as
illustrated below.
Note: DIMMs must be installed in pairs of equal size from the same vendor. In the illustration
below, DIMMs in one colored pair do not need to match DIMMs in a dierent colored pair.
Mac Pro (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 24
DIMMs for Mac Pro (8x) must t these specications:
•
667 MHz, FB-DIMMs
•
72-bit wide, 240-pin modules
•
36 devices maximum per DIMM
•
Error-correcting code (ECC)
Memory from older Macintosh computers is not compatible with Mac Pro (8x).
Important: For proper operation of Mac Pro (8x) computers, Apple recommends using only
Apple-approved Mac Pro (8x) FB-DIMMs. Refer to GSX for Apple FB-DIMMs service part numbers.
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Warning: Always wait 5–10 minutes for the computer to cool down before you remove or install
memory. The DIMMs may be very hot.
Part Location
Mac Pro (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 25
Procedure
Holding the memory riser card by the two nger holes, pull it out of the memory cage and
1.
place the card DIMM side up on a soft, clean cloth.
Open the ejectors on the DIMM slot by pushing them out to the sides, and remove the
2.
DIMM from the riser card.
Mac Pro (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 26
Replacement Note: Align the DIMM in the slot on the riser card and push both ends of the
DIMM down until the ejectors snap back up into place.
Warning: FB-DIMMs carry heatsinks on either side of the DIMM. Never attempt to remove the
heatsinks from the DIMMs. Doing so could damage the DIMM.
Mac Pro (8x) Take Apart — Memory (DIMMs) and Memory Riser Cards 27
PCI Express/Graphics Card
Slot 1: Double-wide
PCI Express graphics
(graphics card installed)
Slots 2–4: PCI Express
The Mac Pro (8x) logic board includes one double-wide PCI Express graphics slot and three
PCI Express expansion slots, for a total of four slots. The computer comes with a graphics card
installed in slot 1. You can install additional PCI Express graphics and expansion cards in the
remaining three PCI Express expansion slots.
Important: Graphics cards from previous Power Mac G5 models are not compatible with Mac
Pro (8x) models. In addition, Mac Pro (8x) graphics cards are not compatible with previous
models.
Important: Combined maximum power consumption for all four PCI Express slots must not
exceed 300 W.
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Note: You may also nd it helpful to remove the hard drives and carriers and any adjacent PCI
Express cards before beginning this procedure.
Mac Pro (8x) Take Apart — PCI Express/Graphics Card 28
Part Location
Procedure
This procedure explains how to remove a standard card and a card that includes a booster cable.
Before you can remove either type of card, however, you must rst loosen the two captive screws
that secure the PCI bracket to the enclosure and remove the bracket.
Mac Pro (8x) Take Apart — PCI Express/Graphics Card 29
Warning: When removing or installing a card, handle it only by the edges. Do not touch its
connectors or any of the components on the card. Lift the card straight out from the connector
to remove it, and insert it straight into the connector to install it. Do not rock the card from side
to side and don’t force the card into the slot. Once the replacement card is installed, pull on it
gently to check that it is properly connected.
Standard Card
Release the small locking clip at the front of the card’s logic board connector by pushing the
1.
clip up toward the media shelf.
Holding the card by the top corners, pull up the card and remove it from its expansion slot.
2.
Replacement Note: Align the card’s connector with the expansion slot and press until the
connector is inserted all the way into the slot. If you’re installing a 12-inch card, make sure the
card engages the appropriate slot in the PCI card guide.
Don’t rock the card from side to side; instead, press the card straight into the slot.
•
Don’t force the card. If you meet a lot of resistance, pull the card out. Check the connector
•
and the slot for damage or obstructions, then try inserting the card again.
Pull the card gently to see if it is properly connected. If it resists and stays in place and its
•
gold connectors are barely visible, the card is connected.
Mac Pro (8x) Take Apart — PCI Express/Graphics Card 30
Card with Booster Cable
Disconnect the booster cable from the logic board.
1.
Release the small locking clip at the front of the card’s logic board connector by pushing the
2.
clip up toward the media shelf.
Holding the card by the top corners, gently pull up the card and remove it from its
3.
expansion slot.
If you are replacing the booster cable with a new booster cable, disconnect the cable from
4.
the card.
Mac Pro (8x) Take Apart — PCI Express/Graphics Card 31
Replacement Note: There are two logic board connectors for booster cables. Connect the
booster cable for a card in PCI slot 1 to the lower connector. Connect the booster cable for a card
in PCI slot 2 to the upper connector.
Mac Pro (8x) Take Apart — PCI Express/Graphics Card 32
Power Supply
Tools
The only tools required for this procedure are a magnetized 2.5 mm hex wrench and a longhandled, magnetized Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 3 and 4
•
Optical drive carrier and optical drives
•
Any PCI Express cards that block access to the power supply mounting screws
•
Part Location
Mac Pro (8x) Take Apart — Power Supply 33
Procedure
Using a Phillips screwdriver, remove the two mounting screws on the power supply cable
1.
cover located at the back of the optical drive bay.
Slide the cover toward the top of the enclosure, tilt it up until the two tabs on the cover clear
2.
the slots in the media shelf, and remove the cover from the enclosure.
Replacement Note: Replace the cover at an angle so that the tabs engage with the slots in
the media shelf. Then lower the cover into place.
Mac Pro (8x) Take Apart — Power Supply 34
Using a short-handled, magnetized 2.5 mm hex wrench, remove the four power supply
3.
mounting screws from the bottom of the media shelf.
Release the four power supply cables from their hook-and-loop fasteners on the enclosure.
4.
Depress the locking latch on each cable connector and disconnect the four power supply
5.
cables from the four connectors on the power harness cable.
Mac Pro (8x) Take Apart — Power Supply 35
Slide the power supply toward the front of the computer.
6.
Lift the power supply and cables out of the enclosure.
7.
Replacement Note: When replacing the power supply, be sure to slide it toward the back of the
computer as far as possible. The power receptacle must align with the opening in the enclosure’s
back panel and the four screw holes in the power supply must align with the screw holes in the
media shelf.
Mac Pro (8x) Take Apart — Power Supply 36
Power Supply Fan
Tools
The only tools required for this procedure are needlenose pliers and scissors or wire cutters
(optional)
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 3 and 4
•
Optical drive carrier and optical drives
•
Any PCI Express cards that block access to the power supply mounting screws
•
Power supply
•
Part Location
Mac Pro (8x) Take Apart — Power Supply Fan 37
Procedure
Disconnect the power supply fan cable from the logic board and thread the cable through
1.
the opening in the media shelf.
Using needlenose pliers, pull out the four grommets that mount the power supply fan to the
2.
media shelf divider.
Note: You may nd scissors or wire cutters useful in snipping o the grommet heads.
Mac Pro (8x) Take Apart — Power Supply Fan 38
Rotate the fan and remove it from the enclosure.3.
Mac Pro (8x) Take Apart — Power Supply Fan 39
Replacing the Power Supply Fan
Place the power supply fan in the media shelf and thread the fan’s cable through the
1.
opening in the shelf.
Connect the cable to the logic board.
2.
Rotate the fan into place ush against the media shelf divider. Make sure the back of the fan
3.
faces the divider, as illustrated.
Mac Pro (8x) Take Apart — Power Supply Fan 40
Note: To secure the power supply fan to the divider, use the long-tailed grommets enclosed
with the replacement fan.
Thread the rst grommet, tail rst, through one of the four grommet holes in the divider
4.
and on through the corresponding grommet hole in the fan bracket. Then pull to secure the
grommet and detach the excess threading tail. (The tail is notched to break o at the correct
place.)
Repeat for the other three grommets.
5.
Mac Pro (8x) Take Apart — Power Supply Fan 41
AirPort Extreme Card
Important: The computer enclosure includes AirPort antenna wires and a Bluetooth antenna
wire. The Bluetooth antenna wire looks similar to the AirPort antenna wires, except that it
includes a “BT” label. For proper operation, be careful not to connect the Bluetooth antenna wire
to the AirPort card or any AirPort antenna wire to the Bluetooth card.
Note: You may connect the AirPort antenna wires to either AirPort card connector.
Tools
The only tool required for this procedure is a magnetized jewelers Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Part Location
Mac Pro (8x) Take Apart — AirPort Extreme Card 42
Procedure
Remove the two AirPort Extreme card mounting screws.
1.
Lift the AirPort Extreme card a short distance from the logic board.
2.
Disconnect the AirPort antenna wires from the card.
3.
Mac Pro (8x) Take Apart — AirPort Extreme Card 43
Remove the card from the enclosure.
4.
Replacement Note: To replace the AirPort Extreme card, do the following:
Connect the antenna wires to the card.
•
Important: Be sure to connect the wires that are marked 1 and 3 to the card; the antenna
wire that is marked 2 should be taped out of the way.
Insert the card into its logic board connector at an angle, as illustrated.
•
Lower the screw end of the card down to the standos on the logic board and replace the
•
two mounting screws.
Note: If you are not replacing the AirPort card, cover the connectors on the AirPort antenna wires
with Kapton or other non-conductive tape to prevent them from shorting out components on
the logic board.
Mac Pro (8x) Take Apart — AirPort Extreme Card 44
Bluetooth Card
Important: The computer enclosure includes one Bluetooth antenna wire, which looks similar to
the AirPort antenna wires, except that it includes a “BT” label. If the label is missing, you can also
identify the Bluetooth cable by its location; it is the cable that runs to the back of the computer.
For proper operation, be careful not to connect the Bluetooth antenna wire to the AirPort card or
any AirPort antenna wire to the Bluetooth card.
Tools
The only tool required for this procedure is a magnetized jewelers Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, and lay it on its side with the access side facing up.
Part Location
Mac Pro (8x) Take Apart — Bluetooth Card 45
Procedure
Remove the two Bluetooth card mounting screws.
1.
Lift the Bluetooth card a short distance from the logic board.
2.
Disconnect the Bluetooth antenna wire from the card.
3.
Remove the card from the enclosure.
4.
Note: If you are not replacing the Bluetooth card, cover the connector on the Bluetooth antenna
wire with Kapton or other non-conductive tape to prevent it from shorting out components on
the logic board.
Mac Pro (8x) Take Apart — Bluetooth Card 46
Battery
Tools
No tools are required for this procedure. You may, however, nd a at-blade screwdriver useful in
removing the battery from its holder.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
any PCI Express cards that block access to the battery.
Part Location
Mac Pro (8x) Take Apart — Battery 47
Procedure
Slide the battery out from underneath the battery holder’s metal clip.
1.
Remove the battery from its holder.
2.
Replacement Note: Insert the new battery into the holder, making sure the battery’s positive
symbol (+) faces up.
Warning: Installing the battery incorrectly may cause an explosion. Be sure the battery’s positive
and negative sides are correctly oriented in the holder. Use only the same type of battery or an
equivalent recommended by the manufacturer of the original.
Important: Batteries contain chemicals, some of which may be harmful to the environment.
Please dispose of used batteries according to your local environmental laws and guidelines.
Mac Pro (8x) Take Apart — Battery 48
Processor Heatsink Cover
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
any 12-inch PCI Express cards.
Part Location
Mac Pro (8x) Take Apart — Processor Heatsink Cover 49
Procedure
Note: The heatsink cover is held in place by a number of tabs and magnets on the underside of
the cover. You must release the tabs before you can remove the cover from the enclosure.
Place the ngers of one hand under the lip of the heatsink cover nearest the logic board. Lift
1.
the lip slightly toward the media shelf to release the tabs and magnets under the top face of
the cover.
With your ngers still under the cover’s bottom lip, lift the cover straight up to release the
2.
remaining tabs and magnets under the front face of the cover
Remove the cover from the enclosure.
3.
Mac Pro (8x) Take Apart — Processor Heatsink Cover 50
Replacement Note: When reinstalling the processor heatsink cover, make sure the tabs on the
underside of the cover align with the slots directly below them. (The slots are on the front fan
and memory cage on either side of the heatsink cover.)
Mac Pro (8x) Take Apart — Processor Heatsink Cover 51
Front Fan Assembly
Tools
The only tool required for this procedure is a long-handled, magnetized #1 Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and 2
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Part Location
Mac Pro (8x) Take Apart — Front Fan Assembly 52
Procedure
Using a long-handled, magnetized #1 Phillips screwdriver, remove the screw at the top rear
1.
of the front fan assembly that mounts the assembly to the logic board.
Remove the second Phillips screw at the bottom front of the assembly.
2.
Mac Pro (8x) Take Apart — Front Fan Assembly 53
Place one hand on each end of the fan, lift straight up, and remove the fan from the
3.
enclosure.
Replacement Note: Before re-installing the front fan assembly in the enclosure, make sure that
the fan cables are routed correctly in the fan channel.
Mac Pro (8x) Take Apart — Front Fan Assembly 54
Replacement Note: Make sure all AirPort and Bluetooth antenna wires are out of the way before
lowering the fan assembly onto the logic board.
Replacement Note: When lowering the front fan into the enclosure, slide the guide on the base
of the fan assembly into the channel on the speaker assembly.
Mac Pro (8x) Take Apart — Front Fan Assembly 55
Also make sure the latch on the inside top left edge of the fan assembly engages with the slot
on the inside lip of the enclosure. Then press down until you hear the fan click into place in the
connector on the logic board.
Mac Pro (8x) Take Apart — Front Fan Assembly 56
Memory Cage with Rear Fan
Tools
The only tools required for this procedure are a long-handled, magnetized #1 Phillips screwdriver
and a short-handled, magnetized jeweler’s #1 Phillips screwdriver or right-angle, magnetized #1
Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
PCI Express card installed in slot 1
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Top and bottom memory cards
•
Part Location
Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 57
Procedure
Disconnect the rear fan cable from the logic board.
1.
Using a long-handled, magnetized #1 Phillips screwdriver, remove the two long screws that
2.
mount the memory cage to the logic board.
Using a short-handled, magnetized jeweler’s #1 Phillips screwdriver or right-angle,
3.
magnetized #1 Phillips screwdriver, carefully remove the two short screws that mount the
memory cage to the bottom panel of the enclosure.
Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 58
Note: To remove the memory cage and fan, you must rst slide the fan partway into the
cage. The fan is held in place by two latches, which you must release before sliding the fan.
Using your forenger, reach below the fan and release the latch nearest the logic board.
4.
Using a at-blade screwdriver, release the second latch nearest the front of the computer.
5.
Slide the rear fan into the memory cage.
6.
Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 59
Slide the memory cage and fan toward the power supply far enough that the cage clears the
7.
bottom edge of the enclosure. Then lift the memory cage and fan out of the enclosure.
Replacement Note: If you are installing a new fan in the memory cage assembly, position the fan
as illustrated.
Important: Before you install the cage in the enclosure, the fan should always be inserted
partway into the cage.
Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 60
Replacement Note: Before installing the memory cage and fan, make sure all logic board cables
below the cage are out of the way so that the cage sits properly and the cables are not pinched
or damaged when you tighten the screws.
Replacement Note: To install the memory cage and fan, maneuver the cage into position in the
enclosure. Replace one long mounting screw. Then slide the fan toward the back panel, until you
hear it snap into place.
Replace the other three mounting screws and reconnect the rear fan cable to the logic board.
Mac Pro (8x) Take Apart — Memory Cage with Rear Fan 61
Processor Heatsinks
The Mac Pro (8x) computer uses a special coating on the processor heatsink and processor to
manage the temperature in the computer. The silver-colored coating comes applied to the
underside of the heatsink and the top of the processor.
Use the following guidelines when handling the processor heatsink and/or processor:
Wear disposable nitrile or latex gloves.
•
Avoid touching the silver-colored coating on the underside of the heatsink and the top of
•
the processor.
Always make a visual inspection of new or existing heatsinks and processors before
•
installing them in the computer. See “Processor Heatsink and Processor Visual Inspection
Instructions” in the Troubleshooting chapter for more information.
When removing or replacing the heatsink and/or processor, do not allow the heatsink to be
•
separated from the processor for more than 15 minutes. The special coating on the heatsink
and processor degrades with exposure to air; more than 15 minutes exposure could result in
damage to the computer and a repeat, multi-part repair.
± IMPORTANT
± IMPORTANT
If you need to install
If you need to install
a new heasink or
a new heasink or
processor, reassemble
processor, reassemble
the unit while you are
the unit while you are
waiting for the new
waiting for the new
part to arrive.
part to arrive.
Tools
The only tool required for this procedure is a long-handled, magnetized 3 mm athead hex
screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and 2
•
PCI Express card installed in slot 1
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Top and bottom memory cards with DIMMs
•
Memory cage with rear fan
•
Mac Pro (8x) Take Apart — Processor Heatsinks 62
Part Location
Procedure
Disconnect the 2-pin cable for the upper processor (CPU A) heatsink from the logic board. 1.
Mac Pro (8x) Take Apart — Processor Heatsinks 63
Using a long-handled, magnetized 3 mm athead hex screwdriver, loosen the four captive
2.
mounting screws for the upper processor heatsink in the order indicated below.
Lift the heatsink straight up and out of the enclosure.
3.
Disconnect the cable connector for the lower processor (CPU B) heatsink.
4.
Mac Pro (8x) Take Apart — Processor Heatsinks 64
± IMPORTANT
± IMPORTANT
Remember that you
Remember that you
cannot leave the heat-
cannot leave the heatsink separated from
sink separated from
either the upper or
either the upper or
lower processor for
lower processor for
more than 15 minutes.
more than 15 minutes.
Using a long-handled, magnetized 3 mm athead hex screwdriver, loosen the four captive
5.
mounting screws for the lower processor heatsink in the order indicated below.
Carefully tilt the heatsink so that it clears the bottom lip of the enclosure and then lift the
6.
heatsink out of the computer.
Mac Pro (8x) Take Apart — Processor Heatsinks 65
Visual Inspection of Heatsink Gasket
Before installing a new or existing heatsink, check that the gasket that surrounds the silvercolored coating on the underside of the heatsink is in good condition, as illustrated below.
Replace the gasket if it shows obvious damage, such as cracks, folds, and broken-o surfaces, or
if it is dislocated from the heatsink. The gasket is available through GSX as part of the Mac Pro
Grease Kit, part number 076-1258.
Replacement Instructions for Krytox Grease
The Mac Pro (8x) uses Krytox grease to ensure a proper seal between the heatsink and processor.
A bead of the grease rims the gasket on the underside of the heatsink and comes pre-applied on
replacement heatsinks.
Re-installing Existing Heatsinks/Processors
If you are re-installing existing heatsinks and processors, or transferring existing heatsinks and
processors to a replacement logic board, in most cases you do not need to reapply Krytox grease.
However, if additional grease must be added, do the following:
Order the Mac Pro (8x) Grease Kit (part number 076-1258).
•
Reassemble the unit while you wait for the kit to arrive.
•
Once you have the kit, remove the heatsink and/or processor from the enclosure.
•
Using rst the lint-free cloth and then the alcohol wipe from the grease kit, carefully clean
•
o any residual grease from the underside of the heatsink and the top of the processor. (See
“Installing New Heatsinks” below for more information.) Finish wiping the surfaces one
more time with the cloth.
Mac Pro (8x) Take Apart — Processor Heatsinks 66
Using the pre-measured syringe of Krytox grease from the kit, evenly apply a bead of grease
•
around the full perimeter of the heatsink gasket. Apply the full syringe of grease to the
gasket.
Warning: Do not apply more grease than recommended. The grease must not overow the
heatsink and come in contact with the processor connector.
Do not apply any grease to the processor.
•
Installing New Processors
Do not apply new grease to either the heatsink or the processor.
Installing New Heatsinks
If you are installing a new heatsink, do not apply new grease to either the heatsink or processor,
as the replacement heatsink comes with the full capacity of grease applied.
Note: When installing a new heatsink, be sure to remove any residual grease from the top edges
of the heatsink’s processor. To clean o the grease, do the following:
Remove the processor from its holder on the logic board. (See “Processors” in this chapter.)
•
Using rst the lint-free cloth and then the alcohol wipe included with the replacement
•
heatsink, carefully clean o any grease from the top edges of the processor. Be very careful
not to touch the silver-colored coating on the top of the processor and the gold pins on the
bottom of the processor.
Use the cloth to carefully wipe the top edges of the processor one more time to clean o any
•
remaining grease.
Mac Pro (8x) Take Apart — Processor Heatsinks 67
± IMPORTANT
± IMPORTANT
If you are installing a
If you are installing a
new heatsink, do not
new heatsink, do not
remove it from its
remove it from its
vacuum-packed bag
vacuum-packed bag
until you are ready to
until you are ready to
install it. Be sure to
install it. Be sure to
follow all directions
follow all directions
for unpacking the
for unpacking the
heatsink that are
heatsink that are
included in its packing
included in its packing
box.
box.
Replacement Instructions for Heatsink
Note: If you are re-installing an existing heatsink, go directly to step 1 below. If you are installing
a replacement heatsink, rst do the following:
Unpack the new heatsink according to the instructions included in the parts box.
•
Remove the protective cap covering the underside of the heatsink and transfer it to the
•
heatsink you are returning to Apple.
Apply the top gasket included in the parts box to the top of the heatsink.
•
Mac Pro (8x) Take Apart — Processor Heatsinks 68
If you are replacing the lower processor heatsink with a new heatsink, install the bumper
•
included in the parts box on the side of the heatsink.
Visually inspect the gasket on the underside of the heatsink. See “Visual Inspection of
1.
Heatsink Gasket” earlier in this procedure.
Carefully align the posts on the lower heatsink with the mounting holes in the logic board,
2.
and lower the heatsink onto the processor.
Lightly tighten the heatsink mounting screws in the order indicated below.
3.
To secure the heatsink to the processor, again tighten the screws in the order indicated.
4.
Repeat steps 1–4 for the upper processor heatsink.
5.
Mac Pro (8x) Take Apart — Processor Heatsinks 69
Disposal Instructions
Place all disposable materials used in removing or replacing a processor heatsink or processor
inside the resealable plastic bag included with the replacement module. (Disposable materials
include such items as protective gloves, alcohol wipes, lint-free cleaning cloths, Krytox grease
and syringe, and heatsink gasket.) Pack this bag along with the failed module in the box that the
replacement module came in, and return the box to Apple.
Mac Pro (8x) Take Apart — Processor Heatsinks 70
Processors
The Mac Pro (8x) computer uses a special coating on the processor heatsink and processor to
manage the temperature in the computer. The silver-colored coating comes applied to the
underside of the heatsink and the top of the processor.
Use the following guidelines when handling the processor heatsink and/or processor:
Wear disposable nitrile or latex gloves.
•
Avoid touching the silver-colored coating on the underside of the heatsink and the top of
•
the processor.
Always make a visual inspection of new or existing heatsinks and processors before
•
installing them in the computer. See “Processor Heatsink and Processor Visual Inspection
Instructions” in the Troubleshooting chapter for more information.
When removing or replacing the heatsink and/or processor, do not allow the heatsink to be
•
separated from the processor for more than 15 minutes. The special coating on the heatsink
and processor degrades with exposure to air; more than 15 minutes exposure could result in
damage to the computer and a repeat, multi-part repair.
± IMPORTANT
± IMPORTANT
If you need to install
If you need to install
a new heasink or
a new heasink or
processor, reassemble
processor, reassemble
the unit while you are
the unit while you are
waiting for the new
waiting for the new
part to arrive.
part to arrive.
Tools
No tools are required for this procedure. However, you may nd a at-blade screwdriver helpful in
releasing the processor holder latch.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and 2
•
PCI Express card installed in slot 1
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Top and bottom memory cards with DIMMs
•
Memory cage with rear fan
•
Processor heatsinks
•
Mac Pro (8x) Take Apart — Processors 71
Part Location
Procedure
Note: This procedure illustrates how to remove the lower processor (CPU B). The instructions are
the same for removing the upper processor (CPU A). You may, however, want to use a at-blade
screwdriver to release the latch on the upper processor.
Release the latch on the metal processor holder.
1.
Note: You may want to use a at-blade screwdriver to release the latch on the upper
processor.
Mac Pro (8x) Take Apart — Processors 72
Rotate the top of the holder to the open position.
2.
Placing a nger in the notch at the front of the processor holder, pry up the processor and
3.
lift it out of the holder.
Mac Pro (8x) Take Apart — Processors 73
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.
± IMPORTANT
± IMPORTANT
If you are installing a
If you are installing a
new processor, do not
new processor, do not
remove it from its
remove it from its
vacuum-packed bag
vacuum-packed bag
until you are ready to
until you are ready to
install it. Be sure to
install it. Be sure to
follow all directions for
follow all directions for
unpacking the proces-
unpacking the processor that are included in
sor that are included in
its packing box.
its packing box.
Replacement Note: Before installing a new, replacement processor, remove the protective
container covering the new processor. Transfer the container to the original processor before
returning it to Apple.
Mac Pro (8x) Take Apart — Processors 74
Replacement 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.
Note: Unlike in earlier Power Mac G5 computers, replacing a processor in Mac Pro (8x) does not
require running Apple Service Diagnostic for thermal calibration.
Mac Pro (8x) Take Apart — Processors 75
Speaker Assembly
Tools
The only tools required for this procedure are a magnetized #1 Phillips screwdriver and a
magnetized jeweler’s #0 Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and 2
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Part Location
Mac Pro (8x) Take Apart — Speaker Assembly 76
Procedure
Remove the three speaker assembly mounting screws.
1.
Carefully pivot the speaker assembly a short distance away from the enclosure.
2.
Disconnect the speaker assembly cable from the logic board.
3.
Remove the speaker assembly from the computer.
4.
Mac Pro (8x) Take Apart — Speaker Assembly 77
If you are replacing the speaker in the assembly bracket, do the following:
5.
• Slide the speaker cable through the opening in the speaker bracket.
• Using a magnetized jeweler’s #0 Phillips screwdriver, remove the four mounting screws.
Remove the speaker and cable from the bracket.
6.
Mac Pro (8x) Take Apart — Speaker Assembly 78
USB Cable
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and 2
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Part Location
Mac Pro (8x) Take Apart — USB Cable 79
Procedure
Disconnect the USB cable from connector J201 on the front panel board.
1.
Disconnect the USB cable from connector J2D1 on the logic board.
2.
Remove the cable from the enclosure.
3.
Mac Pro (8x) Take Apart — USB Cable 80
Logic Board
Note: Every time you remove the logic board, you must also remove the two processor heatsinks.
See special instructions for handling the heatsinks in “Processor Heatsinks” in the Take Apart
chapter.
Tools
The only tool required for this procedure is a magnetized Phillips #1 screwdriver.
Preliminary Steps
± IMPORTANT
± IMPORTANT
Do not allow the
Do not allow the
heatsink to be
heatsink to be
separated from the
separated from the
processor for more
processor for more
than 15 minutes. If
than 15 minutes. If
you are ordering
you are ordering
a new logic board,
a new logic board,
reassemble the unit
reassemble the unit
while you are waiting
while you are waiting
for the part to arrive.
for the part to arrive.
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
All hard drives and hard drive carriers
•
All PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Top and bottom memory cards with DIMMs
•
Memory cage with rear fan
•
Processor heatsinks
•
Speaker assembly
•
USB cable
•
AirPort Extreme card (if installed)
•
Bluetooth card (if installed)
•
Mac Pro (8x) Take Apart — Logic Board 81
Part Location
Mac Pro (8x) Take Apart — Logic Board 82
Procedure
To keep them out of the way, temporarily tape the antenna cables to the bottom of the
1.
media shelf.
Important: Be sure to disconnect all cables from the logic board before you remove the
logic board mounting screws.
Mac Pro (8x) Take Apart — Logic Board 83
Starting at the back panel side of the logic board and working clockwise around the board,
2.
disconnect all cables from the logic board.
Note: There are 14 cables you will be disconnecting from the logic board.
Mac Pro (8x) Take Apart — Logic Board 84
Using a magnetized #1 Phillips screwdriver, remove the 11 black logic board mounting
3.
screws.
Mac Pro (8x) Take Apart — Logic Board 85
Slide the logic board back a short distance from the port openings in the back panel. Make
4.
sure the ports clear the openings.
Tilt the top edge of the logic board up and maneuver the board out of the enclosure.
5.
Mac Pro (8x) Take Apart — Logic Board 86
Replacement Note: Before replacing the logic board, check the underside of the board to be
sure that all bumpers are in place. Replace any missing bumpers.
Replacement Note: If you are replacing the logic board with a new logic board, do the following:
Remove the protective caps from the new logic board’s processor holders and transfer the
•
caps on the original logic board’s processor holders. Note that logic boards returned to
Apple without the protective caps may be rejected.
Warning: Be careful not to touch the gold pins in the processor socket on the logic board.
Mac Pro (8x) Take Apart — Logic Board 87
Transfer the processors to the new board: Refer to the “Processors” topic in this chapter.
•
You must also transfer the back ports EMI shield to the new board.
•
Replacement Note: To replace the logic board, tilt it as shown and lower it into the enclosure.
Note: Unlike in earlier Power Mac G5 computers, replacing a logic board in Mac Pro (8x) does not
require running Apple Service Diagnostic for thermal calibration.
Mac Pro (8x) Take Apart — Logic Board 88
Front Panel Board
Tools
The only tool required for this procedure is a long-handled, magnetized Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and 2
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Part Location
Mac Pro (8x) Take Apart — Front Panel Board 89
Procedure
Disconnect the optical drive ribbon cable from the logic board and move the cable out of
1.
the way.
Mac Pro (8x) Take Apart — Front Panel Board 90
Disconnect the following ve cables from the front panel board:
2.
• FireWire 800 cable from connector J200
• USB cable from connector J201
• Front panel board power cable from connector J202
• Front panel board audio cable from connector J600
• Power button cable from connector J800
Mac Pro (8x) Take Apart — Front Panel Board 91
Using a magnetized #1 Phillips screwdriver, remove the ve front panel board mounting
3.
screws.
Lift the front panel board out of the computer.
4.
Note: If you are replacing the front panel board with a new front panel board, separate the EMI
shield from the back of the board and transfer it to the new front panel board.
Mac Pro (8x) Take Apart — Front Panel Board 92
Power Button
Tools
The only tool required for this procedure is a jeweler’s at-blade screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
Hard drives and hard drive carriers in drive bays 1 and 2
•
Any 12-inch PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Part Location
Mac Pro (8x) Take Apart — Power Button 93
Procedure
Disconnect the optical drive ribbon cable from the logic board and move the cable out of
1.
the way.
Disconnect the front panel board power cable from the front panel board and move it out of
2.
the way.
Disconnect the power button cable from the front panel board.
3.
Lay the computer so that the front panel is facing down.
4.
Mac Pro (8x) Take Apart — Power Button 94
Remove the black rubber cap that covers the power button LED.
5.
Using a jeweler’s at-blade screwdriver, pry up the metal C-ring that secures the power
6.
button board.
Lift up and remove the power button board.
7.
Mac Pro (8x) Take Apart — Power Button 95
Remove the metal activation ring that lies below the power button board.
8.
Remove the power button from the enclosure.
9.
Mac Pro (8x) Take Apart — Power Button 96
AirPort Antenna Board with Cables
The AirPort Extreme antenna cables are part of the AirPort antenna board assembly. To remove or
replace the cables, you must replace the antenna board assembly
Tools
The only tools required for this procedure are a jeweler’s at-blade screwdriver and a magnetized
jeweler’s Phillips #0 screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove
the following:
All hard drives and hard drive carriers
•
All PCI Express cards
•
Processor heatsink cover
•
Front fan assembly
•
Top and bottom memory cards with DIMMs
•
Memory cage with rear fan
•
Processor heatsinks
•
Speaker assembly
•
USB cable
•
AirPort Extreme card (if installed)
•
Bluetooth card (if installed)
•
Logic board
•
Mac Pro (8x) Take Apart — AirPort Antenna Board with Cables 97
Part Location
Procedure
Place the computer so that the bottom panel is facing you.
1.
Remove the tape holding the antenna cables to the enclosure.
2.
Using a jeweler’s at-blade screwdriver, pry open the three latches on the antenna cables
3.
ferrite bead and remove the bead from the cables.
Mac Pro (8x) Take Apart — AirPort Antenna Board with Cables 98
Using the jeweler’s at-blade screwdriver, carefully pry up the rectangular plastic plate on
4.
the bottom panel.
Using a jeweler’s #0 Phillips screwdriver, remove the four antenna board mounting screws.
5.
Mac Pro (8x) Take Apart — AirPort Antenna Board with Cables 99
Tilt the antenna board away from the back panel a short distance.
6.
Feed each antenna cable separately out through the small opening in the bottom panel.
7.
Remove the antenna board and cables from the enclosure.
8.
Mac Pro (8x) Take Apart — AirPort Antenna Board with Cables 100
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