Apple macpro early2008 Service Manual
Service Source
Mac Pro (Early 2008)
Updated: 23 April 2008
© 2008 Apple Inc. All rights reserved.
Apple Inc.
© 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
www.apple.com
Apple, the Apple logo, and Mac Pro are trademarks of Apple Inc., registered in the U.S. and other
countries.
ii
Mac Pro (Early 2008)
Contents
Basics
Overview 7
Identifying Mac Pro (Early 2008) Computers 8
Serial Number Location 8
Special Handling Instructions for Dual 3.2 GHz Conguration 9
Handling Instructions 9
Safety and First Aid Guidelines 10
Disposal Instructions 11
Take Apart
General Information 13
Orientation 13
Tools 13
Parts Requiring Enclosure Replacement 13
Note on Illustrations 13
Opening the Computer 14
Hard Drives 16
Optical Drive Carrier and Optical Drives 19
Memory (FB-DIMMs) and Memory Riser Cards 23
PCI Express/Graphics Card 27
Power Supply 32
Power Supply Fan 36
AirPort Extreme Card 41
Bluetooth Card 44
Battery 46
Processor Heatsink Cover 48
iii
Front Fan Assembly 51
Mac Pro RAID Card and Battery 56
Memory Cage with Rear Fan 62
Northbridge Heatsink 68
Processor Heatsinks for 2.8 and 3.0 GHz Processors 71
Processor Heatsinks for 3.2 GHz Processors 78
Processors, 2.8 and 3.0 GHz 87
Processors, 3.2 GHz 92
Speaker Assembly 97
USB Cable 100
Logic Board 102
Front Panel Board 110
Power Button 114
AirPort Antenna Board with Cables 118
Optical Drive Power Cable 122
Optical Drive Data (Ribbon) Cable 125
Ambient Board 127
Ambient Board Cable 129
Bluetooth Antenna Board and Cable 131
Hard Drive Cable Harness 134
Hard Drive Temperature Sensor Cable 136
Hard Drive Temperature Sensor 138
Power Cable Harness 141
Troubleshooting
General Information 147
Memory 147
PCI Express Cards 149
Internal Cabling Matrix 149
iv
Thermal Calibration 151
Resetting the Logic Board 152
Power-On Self Test: RAM and Processor Verication 153
Diagnostic LEDs 154
Power Supply Verication 159
Mac Pro Firmware Updates 159
Processor Heatsink and Processor Visual Inspection Instructions 161
Symptom Charts 164
How to Use the Symptom Charts 164
Startup Failures 164
Fans 167
AirPort Extreme Card 168
Bluetooth Card 169
Other Failures 169
Upgrades
AirPort Extreme Card 173
PCI Express/Graphics Card 176
Views
Exploded Views 181
External Views 183
Screw Matrix 185
v
Service Source
Basics
Mac Pro (Early 2008)
© 2008 Apple Inc. All rights reserved.
Overview
The Mac Pro (Early 2008) computer features single and dual quad-core Intel 2.8 GHz processors
and dual quad-core Intel 3.0 and 3.2 GHz processors. New CTO options include a 1 TB SATA hard
drive and a 300 GB SAS drive.
Note: The 3.2 GHz conguration of the Mac Pro (Early 2008) computer uses a special coating
on the processor heatsink and processor as was used on the Mac Pro (8x) processor heatsink
and processor. The other 2.8 and 3.0 congurations of the Mac Pro (Early 2008) do not use this
coating.
Mac Pro (Early 2008)) Basics 7
Identifying Mac Pro (Early
2008) Computers
To identify a Mac Pro (Early 2008) computer, check the conguration code on the computer’s
conguration label, which is located on the computer’s back panel directly below the video ports.
See the following section “Serial Number Location.”
One other quick way to identify the computer is to open the side panel and inspect the memory
cage. The Mac Pro (Early 2008) memory cage has a cross bar and looks like the following:
Serial Number Location
The Mac Pro (Early 2008) serial number is located on the conguration label, directly below the
conguration description.
Mac Pro (Early 2008)) Basics 8
Special Handling Instructions
for Dual 3.2 GHz Conguration
The dual 3.2 GHz conguration of the Mac Pro (Early 2008) 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.
Important: These instructions apply only to the dual 3.2 GHz conguration.
Handling Instructions
Use these guidelines when handling the Mac Pro (Early 2008) 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 30 minutes. The silver coating on the heatsink
and processor degrades with exposure to air; more than 30 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 30 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.
Mac Pro (Early 2008)) Basics 9
See “• Processor Heatsink and Processor Visual Inspection Instructions” in the
Troubleshooting chapter for more information.
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 for 3.2 GHz Processors” 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 for 3.2 GHz Processors” and
“Processors, 3.2 GHZ” 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.
Mac Pro (Early 2008)) Basics 10
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.
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 (Early 2008)) Basics 11
Service Source
Take Apart
Mac Pro (Early 2008)
© 2008 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•
Short-handled, 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•
Nylon probe tool (black stick)•
Thermal grease kit (Apple part number 076-1258)•
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)•
Parts Requiring Enclosure Replacement
The following are not separate, orderable parts. To replace them, you must replace the enclosure.
Media shelf•
Rear panel latch•
Note on Illustrations
Because a pre-production model was used for the illustrations in this manual, you may notice
small dierences between the image pictured and the computer you are servicing.
Mac Pro (Early 2008) Take Apart — General Information 13
Opening the Computer
Tools
No tools are required for this procedure.
Preliminary Steps
Shut down the computer. 1.
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.
Wait 5 to 10 minutes to allow the computer’s internal components to cool. 2.
Warning: After you shut down the system, the internal components can be very hot. You
must let the computer cool down before continuing.
Unplug all external cables from the computer except the power cord.3.
Touch the metal PCI access covers on the back of the computer to discharge any static 4.
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.
Unplug the power cord. 5.
Warning: To avoid damaging its internal components or the components you want to
install, always unplug the computer before attempting any take-apart procedure.
Put on an ESD wrist strap.6.
Mac Pro (Early 2008) — Opening the Computer 14
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 (Early 2008) — Opening the Computer 15
Hard Drives
The Mac Pro (Early 2008) computer can accommodate four hard drives in its four internal hard
drive bays. In most congurations, a single SATA hard drive occupies the far left bay (bay 1). You
can install additional SATA drives in the second, third, and fourth hard drive bays. Or you can
install up to four SAS drives.
The hard drives must meet the following specications:
Type: Serial Attached SCSI (SAS) or Serial ATA (SATA) 3 Gb/s•
Width: 3.9 inches (102 mm)•
Depth: 5.7 inches (147 mm)•
Height: 1.0 inch •
Important: To install SAS drives in a Mac Pro (Early 2008) computer, you must also install the
optional Mac Pro RAID Card.
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 (Early 2008) Take Apart — Hard Drives 16
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 (Early 2008) Take Apart — Hard Drives 17
If you are replacing the hard drive with a new drive, remove the four screws that mount the 3.
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:
Open Disk Utility and select the drive in the list to the left. 1.
Note: If you are formatting the primary drive, use the Disk Utility program on the Install Disk.
Click on the Partition tab.2.
Click on “Options” and verify GUID is selected if this is a bootable drive.3.
Apply the change by clicking on the “Partition” button.4.
Mac Pro (Early 2008) Take Apart — Hard Drives 18
Optical Drive Carrier and Optical Drives
The Mac Pro (Early 2008) 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 (Early 2008) Take Apart — Optical Drive Carrier and Optical Drives 19
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 (Early 2008) Take Apart — Optical Drive Carrier and Optical Drives 20
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 (Early 2008) Take Apart — Optical Drive Carrier and Optical Drives 21
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.
Important: Be very careful not to catch the cables under the carrier as you slide it into the
bay.
Mac Pro (Early 2008) Take Apart — Optical Drive Carrier and Optical Drives 22
Memory (FB-DIMMs) and Memory Riser Cards
The Mac Pro (Early 2008) 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 2 GB of memory, installed as a pair of 1 GB fully buered, dual inline memory
modules (FB-DIMMs) in two of the DIMM slots. Additional pairs of 1 GB, 2 GB, or 4 GB FB-DIMMs
can be installed in the open DIMM slots, as illustrated below. Maximum memory is 32 GB.
DIMMs must be installed as pairs of identical size and type, from the same vendor. In the
illustration below, like-colored DIMMs must match.
Mac Pro (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 23
DIMMs for Mac Pro (Early 2008) must t these specications:
800 MHz, DDR2, FB-DIMMs•
72-bit wide, 240-pin modules•
36 memory ICs maximum per DIMM•
Error-correcting code (ECC)•
Memory from older Macintosh computers is not compatible with Mac Pro (Early 2008).
Important: For proper operation of Mac Pro (Early 2008) computers, Apple recommends using
only Apple-approved Mac Pro (Early 2008) 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 (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 24
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 (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 25
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 (Early 2008) Take Apart — Memory (DIMMs) and Memory Riser Cards 26
PCI Express/Graphics Card
Slot 1: Double-wide
PCI Express graphics
(graphics card installed)
Slots 2–4: PCI Express
The Mac Pro (Early 2008) 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 (Early 2008) models. In addition, Mac Pro (Early 2008) 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 (Early 2008) Take Apart — PCI Express/Graphics Card 27
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 (Early 2008) Take Apart — PCI Express/Graphics Card 28
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 (Early 2008) Take Apart — PCI Express/Graphics Card 29
Card with Booster Cable
Some graphics cards require either one or two booster cables connecting the card to the
auxillary power connectors on the logic board.
Note: The graphics card NVIDIA GeForce 8800 GT requires one booster cable; the graphics card
NVIDIA Quadro FX 5600 requires two booster cables.
Disconnect the booster cable(s) 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 a booster cable with a new one, disconnect the cable from the card.4.
Mac Pro (Early 2008) Take Apart — PCI Express/Graphics Card 30
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