User Guide

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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 Verication 146
Diagnostic LEDs 147
Power Supply Verication 152
Mac Pro Firmware Updates 152
Symptom Charts 154
How to Use the Symptom Charts 154
Startup Failures 154
Fans 157
Other Failures 158