Apple mac pro early 2008 User Manual

							© 2008 Apple Inc. All rights reserved.
 Service Source
Mac Pro (Early 2008)
Updated: 23 April 2008 
						

							ii
 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 effort has been made to ensure that the information in this document is accurate. Apple is 
not responsible for printing or clerical errors.
Apple 
1 Infinite 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.  
						

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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 Configuration 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 
						

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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 
						

							v
Thermal Calibration 151
Resetting the Logic Board  152
Power-On Self Test: RAM and Processor Verification  153
Diagnostic LEDs 154
Power Supply Verification   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 
						

							© 2008 Apple Inc. All rights reserved.
 Service Source 
Basics
Mac Pro (Early 2008) 
						

							Mac Pro (Early 2008)) Basics 7
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 configuration 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 configurations of the Mac Pro (Early 2008) do not use this 
coating.
  
						

							Mac Pro (Early 2008)) Basics 8
Identifying Mac Pro (Early 
2008) Computers
To identify a Mac Pro (Early 2008) computer, check the configuration code on the computer’s 
configuration 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 configuration label, directly below the 
configuration description. 
						

							Mac Pro (Early 2008)) Basics 9
Special Handling Instructions 
for Dual 3.2 GHz Configuration
The dual 3.2 GHz configuration 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 configuration.
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 off the processor. 
Use care when removing the processor from the logic board. Lift the processor out of the • 
processor holder by inserting a finger or flatblade 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 10
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 off 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 first 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 specific 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 flush with plenty of water. If wearing contact lenses, after initial flushing, 
remove contact lenses and continue to flush for 15 minutes. Have eyes examined by a 
medical professional if irritation persists.
Skin: Wash skin with soap and running water. The recommended flushing 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 artificial respiration. If breathing is 
difficult, give oxygen. Call a physician.