Apple mac pro 8x User Manual

Mac Pro (8x) Troubleshooting — Symptom Charts 151
Check diagnostic LED 2 and/or LED 3 for processor connection 4. 
If only one of the CPU Error LEDs (LED 2 or 3) comes on, try swapping the processors. If the 5. 
Error LED follows the processor to the other processor location, replace that processor.
Replace logic board 6. 
Power-on LED illuminates when power button is pressed, fans spin, and boot tone 
chimes, but there is no video 
Verify display is properly connected and powered on.1. 
Check video card...

Mac Pro (8x) Troubleshooting — Symptom Charts 15 2
Fans 
Individual fan failure 
Verify fan is properly connected.1. 
Verify all other fans are working properly. If all fans seem to have failed, the problem is most 2.  
likely not the fans. Reset the logic board to see if this resolves this problem.
Replace fan3. 
Replace logic board 4. 
Fans run at high speed (computer may shut down or may just hang and not shut 
down as a result)
Check for proper ventilation around the exterior of the computer. 1. 
If...

Mac Pro (8x) Troubleshooting — Symptom Charts 15 3
Check for proper ventilation around the exterior of the computer. 3. 
Remove the computer’s side access panel and observe the diagnostic LEDs, specifically 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 
flashing, this may indicate an initial processor over temperature condition. If either of these 
LEDs is solidly...

Mac Pro (8x) Troubleshooting — Symptom Charts 154
Bluetooth Card
Bluetooth Card does not appear to function and is not recognized by System 
Profiler
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...

Mac Pro (8x) Troubleshooting — Symptom Charts 15 5
Front Panel FireWire port 
Reset SMC.1. 
Reseat front panel board cables2.  
Replace front panel board cables3. 
Reseat front panel board 4. 
Replace front panel board 5. 
Replace logic board 6. 
Rear FireWire port 
Reset SMC.1. 
Replace logic board 2.  
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...

Mac Pro (8x) Troubleshooting — Symptom Charts 156
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. 
Reset PRAM2.  
Reseat front panel board 3. 
Replace front panel board 4. 
Replace logic board 5....

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Upgrades
Mac Pro (8x) 

Mac Pro (8x) Upgrades — AirPort Extreme Card 15 8
AirPort Extreme Card
Important: The computer enclosure includes AirPort antenna wires and a Bluetooth antenna 
wire. The Bluetooth antenna wire looks similar to the AirPort antenna wires, except that it 
includes a “BT” label. For proper operation, be careful not to connect the Bluetooth antenna wire 
to the AirPort card or any AirPort antenna wire to the Bluetooth card. 
Note: You may connect the AirPort antenna wires to either AirPort card connector....

Mac Pro (8x) Upgrades — AirPort Extreme Card 15 9
Procedure
Connect the AirPort antenna wires to the connectors on the card. 1. 
Important: Be sure to connect the wires that are marked 1 and 3 to the card; the antenna 
wire that is marked 2 should be taped out of the way. 
Insert the AirPort Extreme card into its logic board connector at an angle, as illustrated. Then 2.  
lower the screw end of the card down to the standoffs on the logic board.  

Mac Pro (8x) Upgrades — AirPort Extreme Card 160
Install the two AirPort Extreme card mounting screws.3.