User Guide

Mac Pro Troubleshooting — Symptom Charts 159
Front Panel USB 2.0 port
Reseat front panel board cables1.
Replace front panel board cables2.
Reseat front panel board 3.
Replace front panel board 4.
Replace logic board 5.
Rear Panel USB 2.0 port
Replace logic board
Internal speaker
Check speaker cable connection 1.
Replace speaker2.
Replace logic board 3.
AirPort Extreme Card
Start up the computer from a known-good volume (such as an external hard drive) with 1.
AirPort driver software installed, to isolate the issue to software or hardware. If the computer
seems to perform adequately when booted in this way, troubleshoot as a software issue. If
the computer continues to exhibit the issue, follow the steps below.
Reseat antenna cables connected to card 2.
Replace card 3.
Replace logic board 4.
Bluetooth Card
Start up the computer from a known-good volume (such as an external hard drive) with 1.
Bluetooth driver software installed, to isolate the issue to software or hardware. If the
computer seems to perform adequately when booted in this way, troubleshoot as a software
issue. If the computer continues to exhibit the issue, follow the steps below.
Reseat antenna cable connected to card.2.
Replace card.3.
Replace logic board.4.
Audio IO (front headphones)
Start up the computer from a known-good volume (such as its Installation disc or an external 1.
hard drive), to isolate the issue to software or hardware. If the computer seems to perform
adequately when booted in this way, troubleshoot as a software issue. If the computer
continues to exhibit the issue, follow the steps below.