User Guide
Table Of Contents
- Mac Pro (8x)
- Contents
- Basics
- Take Apart
- General Information
- Opening the Computer
- Hard Drives
- Optical Drive Carrier and Optical Drives
- Memory (FB-DIMMs) and Memory Riser Cards
- PCI Express/Graphics Card
- Power Supply
- Power Supply Fan
- AirPort Extreme Card
- Bluetooth Card
- Battery
- Processor Heatsink Cover
- Front Fan Assembly
- Mac Pro RAID Card and Battery
- Memory Cage with Rear Fan
- Processor Heatsinks
- Processors
- Speaker Assembly
- USB Cable
- Logic Board
- Front Panel Board
- Power Button
- AirPort Antenna Board with Cables
- Optical Drive Power Cable
- Optical Drive Data (Ribbon) Cable
- Ambient Board
- Ambient Board Cable
- Bluetooth Antenna Board and Cable
- Hard Drive Cable Harness
- Hard Drive Temperature Sensor Cable
- Hard Drive Temperature Sensor
- Power Cable Harness
- Troubleshooting
- Upgrades
- Views
Mac Pro (8x) Troubleshooting — Symptom Charts 153
Check for proper ventilation around the exterior of the computer. 3.
Remove the computer’s side access panel and observe the diagnostic LEDs, specically LED 4.
4 and LED 5 (the CPU A and B Overtemp LEDs). Refer to “Diagnostic LEDs” in this chapter
for more information on how to locate and interpret these LEDs. If either of these LEDs is
ashing, this may indicate an initial processor over temperature condition. If either of these
LEDs is solidly on, this may indicate a chronic processor over temperature condition. Initial
processor over-temperature can cause symptoms such as sluggish computer performance. A
chronic processor over-temperature condition can cause the computer to hang completely.
Verify proper processor heat sink installation. (Refer to “5. Processor Heatsinks” in the Take
Apart chapter for more information.)
Verify all thermal sensors and their cables are properly connected, especially the ambient 6.
temperature sensor board.
Verify all fans are operating properly and are unobstructed, especially the front intake fan.7.
AirPort Extreme Card
AirPort Extreme Card does not appear to function and is not recognized by
System Proler
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 card and antenna cables connected to card 2.
Replace card 3.
Replace logic board 4.
AirPort Extreme Card does not appear to function or has weak performance and is
recognized by System Proler
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 card and antenna cables connected to card 2.
Replace card3.
Replace logic board4.
Replace AirPort Extreme antenna board / cable assembly5.