Apple MAC PRO Service Manual
Service Source
Mac Pro
Updated: 4 March 2008
© 2006 Apple Computer, Inc. All rights reserved.
Mac Pro
Contents
Basics
Overview 6
Serial Number Location 7
Take Apart
General Information 9
Opening the Computer 10
Hard Drives 12
Optical Drive Carrier and Optical Drives 15
Memory (FB-DIMMs) and Memory Riser Cards 19
PCI Express/Graphics Card 23
Power Supply 29
Power Supply Fan 38
AirPort Extreme Card 47
Bluetooth Card 50
Battery 52
Processor Heatsink Cover 54
Front Fan Assembly 59
Mac Pro RAID Card & Battery 62
Processor Heatsinks 68
Memory Cage with Rear Fan 73
Processors 76
ii
Speaker Assembly 83
USB Cable 87
Logic Board 90
Front Panel Board 100
Power Button 105
AirPort Antenna Board with Cables 110
Optical Drive Power Cable 114
Optical Drive Data (Ribbon) Cable 117
Ambient Board 120
Ambient Board Cable 122
Bluetooth Antenna Board and Cable 124
Hard Drive Cable Harness 127
Hard Drive Temperature Sensor Cable 130
Hard Drive Temperature Sensor 133
Power Cable Harness 136
Troubleshooting
General Information 140
Memory 140
PCI Express Cards 141
Internal Cabling Matrix 141
Thermal Calibration 143
Block Diagram 144
Resetting the Logic Board 145
Power-On Self Test: RAM and Processor Verication 146
Diagnostic LEDs 147
Power Supply Verication 152
Mac Pro Firmware Updates 152
Symptom Charts 154
How to Use the Symptom Charts 154
Startup Failures 154
Fans 157
Other Failures 158
iii
Upgrades
AirPort Extreme Card 162
Bluetooth Card 165
PCI Express/Graphics Card 167
Views
Exploded View 172
External Views 174
Screw Matrix 176
iv
Service Source
Basics
Mac Pro
© 2006 Apple Computer, Inc. All rights reserved.
Overview
The Mac Pro form factor is similar to that of earlier Power Mac G5 models. However, the Mac Pro
includes several new hardware features, including:
Two dual-core Intel processors•
All Mac Pro models have two dual-core Intel Xeon processors, eectively making them quad
processor computers.
FB-DIMM memory supporting ECC and up to 16 GB of RAM•
Higher performance memory with support for error correction and greater capacity means
more room to grow when using high-performance computing applications.
Four internal hard drives•
Mac Pro supports up to four serial ATA (SATA) hard drives in easy-to-install drive carriers.
Two optical drives•
Mac Pro oers support for two cable-select optical drives
In addition to the features above, Mac Pro includes logic board diagnostic LEDs that help you
better diagnose hardware issues.
Mac Pro Basics 6
Serial Number Location
To identify a particular Mac Pro computer, check the computer’s serial number. You can nd the
serial number within the model’s conguration label, which is located on the computer’s back
panel directly below the video ports.
Mac Pro Basics 7
Service Source
Take Apart
Mac Pro
© 2006 Apple Computer, 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•
Socket wrench•
Apple Mac Pro wrench (part number 922-8025)•
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)•
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 Take Apart — General Information 9
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 — Opening the Computer 10
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 — Opening the Computer 11
Hard Drives
The Mac Pro 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 Take Apart — Hard Drives 12
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 Take Apart — Hard Drives 13
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 Take Apart — Hard Drives 14
Optical Drive Carrier and Optical Drives
The Mac Pro 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 Take Apart — Optical Drive Carrier and Optical Drives 15
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 Take Apart — Optical Drive Carrier and Optical Drives 16
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 Take Apart — Optical Drive Carrier and Optical Drives 17
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 Take Apart — Optical Drive Carrier and Optical Drives 18
Memory (FB-DIMMs) and Memory Riser Cards
The Mac Pro 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 (FB-
DIMMs) 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 Take Apart — Memory (DIMMs) and Memory Riser Cards 19
DIMMs for Mac Pro 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.
Important: For proper operation of Mac Pro computers, Apple recommends using only Appleapproved Mac Pro 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 Take Apart — Memory (DIMMs) and Memory Riser Cards 20
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 Take Apart — Memory (DIMMs) and Memory Riser Cards 21
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 Take Apart — Memory (DIMMs) and Memory Riser Cards 22
PCI Express/Graphics Card
Slot 1: Double-wide
PCI Express graphics
(graphics card installed)
Slots 2–4: PCI Express
The Mac Pro 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 models. In addition, Mac Pro graphics cards are not compatible with Power Mac G5 models.
Important: Combined maximum power consumption for all four PCI Express slots must not
exceed 300 W.
Note: Port 2 of the ATI Radeon X1900 XT graphics card is compatible with the Apple DVI-to-video
adapter. See KnowledgeBase article 304910.
Tools
The only tool required for this procedure is a Phillips #1 screwdriver.
Mac Pro Take Apart — PCI Express/Graphics Card 23
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.
Part Location
Mac Pro Take Apart — PCI Express/Graphics Card 24
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.
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.
Mac Pro Take Apart — PCI Express/Graphics Card 25
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 Take Apart — PCI Express/Graphics Card 26
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 Take Apart — PCI Express/Graphics Card 27
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 Take Apart — PCI Express/Graphics Card 28
Power Supply
Tools
The only tool required for this procedure is a magnetized 2.5 mm hex wrench. You may also nd
a at-blade screwdriver helpful in releasing some cable connectors.
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 drive• s
Any PCI Express cards that block access to the power supply mounting screw• s
Part Location
Mac Pro Take Apart — Power Supply 29
Procedure
Removing the Power Supply
Using a magnetized 2.5 mm hex wrench remove the four power supply mounting screws 1.
from the bottom of the media shelf.
Depress the upper right corner of the power supply and slide the power supply toward the 2.
front of the computer.
Mac Pro Take Apart — Power Supply 30
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