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 Apple Technician Guide
Mac Pro (Early 2009)
Updated: 2010-06-03
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 Apple Inc.
© 2009 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 efort has been made to ensure that the information in this document is accurate. Apple
is not responsible for printing or clerical errors.
Apple
1 Ininite Loop
Cupertino, CA 95014-2084
USA
+ 1 408 996 1010
www.apple.com
Apple, the Apple logo, Mac, and Macintosh are trademarks of Apple Inc., registered in the U.S.
and other countries.
Mac Pro (Early 2009)
Contents
About This Guide
Manual Updates 8
Feedback 9
Basics
Overview 11
How to Identify Quad-Core and 8-Core Processor Conigurations 12
Serial Number Location 13
Troubleshooting
General Troubleshooting 15
Update System Software 15
Troubleshooting Theory 15
Emerging Issues 15
Hardware vs. Software 15
Mac Pro Firmware Updates 16
Memory Coniguration 17
Memory Diagnostic LEDs 19
PCIe/Graphics Cards 21
Functional Overview 22
Block Diagram 24
Common Reset Procedures 25
Power-On Self Test: RAM and Processor Veriication 27
Minimum Coniguration Testing 28
Processor Diagnostic LEDs 32
Symptom Charts Overview 34
Startup and Power Issues 37
No Power/Dead Unit 37
Intermittent Shutdown 40
Memory Issues/Kernel Panic and Freezes 43
No Video 48
Power, but No Boot 51
Noise/Hum/Vibration 52
Burnt Smell/Odor 54
Uncategorized Symptom 55
Communications 56
Ethernet Port/Device Issue 56
AirPort/Bluetooth: Defective Wireless Devices 58
No/Poor Wireless Signal 60
Wireless Input Device Loses Connection 62
AirPort Card: Kernel Panic 64
Wireless Performance Issue / Slow Connection 65
Wireless Input Device Doesn’t Pair 67
Uncategorized Symptom 69
Mass Storage 70
Hard Drive Read/Write Issue 70
Hard Drive Not Recognized/Not Mounting 72
Hard Drive Noisy 74
Optical Drive Won’t Accept/Reject Media 75
Optical Drive Read/Write Data Error 77
Optical Drive Not Recognized/Not Mounting 79
Optical Drive Noisy 81
Optical Drive Not Performing to Specs 84
Uncategorized Symptom 85
Input/Output Devices 86
USB Port Does Not Recognize Known Devices 86
FireWire Port Does Not Recognize Known Good Devices 87
No Audio from Internal Speaker 89
Distorted Audio from Internal Speaker 90
Front Headphone Jack Has No Audio 92
Line-In Jack Has No Input 93
Line-In Jack Has Distorted Input 95
Rear Line-Out Jack Has No Audio 96
Optical Digital Audio In Has No Input 98
Optical Digital Audio Out Has No Output 100
Uncategorized Symptom 101
Mechanical Issues: Thermals and Enclosure 102
Computer Runs Slow with Fast/Failed Fans 102
Power Button Stuck 104
Internal Cables and Connectors Defective 106
Mechanical/Physical Damage 107
Uncategorized Symptom 107
Take Apart
General Information 109
Orientation 109
Tools 109
Parts Requiring Enclosure Replacement 109
How to Identify Quad-Core and 8-Core Processor Conigurations 109
Icon Legend 110
Note on Illustrations 110
Opening the Computer 111
Hard Drive 113
Removal 114
Reassembly 114
Formatting a New Drive 115
Optical Drive Carrier and Optical Drive 116
Removal 117
Reassembly 118
Processor Tray 119
Memory DIMMs 121
Memory Coniguration 122
Removal 124
PCI Express/Graphics Card 125
Power Supply 132
AirPort Extreme Card 136
Bluetooth Card 138
Battery 140
Removal 141
Reassembly 141
PCIe Fan 142
Removal 143
Reassembly 143
Mac Pro RAID Card and Battery 144
Removal 145
Reassembly 146
Processor Cage 148
Processor Cage Fans,

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