Apple mac pro User Manual

Mac Pro Take Apart — Processors 81
Replacement Note: When installing the processor on the logic board, align the processor notch 
with the tab on the processor holder, as illustrated. Then lower the processor straight down onto 
the socket.
Replacement Note: Make sure the two logic board bumpers by the upper processor are in place 
before you reinstall the heatsinks. 
Note: Unlike in earlier Power Mac G5 computers, replacing a processor in Mac Pro does not 
require running Apple Service Diagnostic for...

Mac Pro Take Apart — Processors 82
Important: For the new processor to perform properly, the logic board must be upgraded to the 
latest version of the BootROM. You can download the latest version from the Apple support web 
site: http://www.apple.com/support/downloads/
Specifically, see KnowledgeBase article 303880, “Firmware Updates for Intel-based Macs.” 

Mac Pro Take Apart — Speaker Assembly 83
Speaker Assembly
Tools
The only tools required for this procedure are a magnetized #1 Phillips screwdriver and a 
magnetized jeweler’s #0 Phillips screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove 
the following:
Hard drives and hard drive carriers in drive bays 1 and • 2
PCI Express card installed in slot • 1
Any 12-inch PCI Express card• s
Top and bottom memory card• s
Processor...

Mac Pro Take Apart — Speaker Assembly 84
Part Location 

Mac Pro Take Apart — Speaker Assembly 85
Procedure
Remove the three speaker assembly mounting screws.1. 
Carefully pivot the speaker assembly a short distance away from the enclosure. 2.  
Disconnect the speaker assembly cable from the logic board. 3. 
Remove the speaker assembly from the computer. 4.  

Mac Pro Take Apart — Speaker Assembly 86
If you are replacing the speaker in the assembly bracket, do the following: 5. 
• Slide the speaker cable through the opening in the speaker bracket. 
• Using a magnetized jeweler’s #0 Phillips screwdriver, remove the four mounting screws. 
Remove the speaker and cable from the bracket.6.  

Mac Pro Take Apart — USB Cable 87
USB Cable
Tools
No tools are required for this procedure.
Preliminary Steps
Before you begin, open the computer, lay it on its side with the access side facing up, and remove 
the following:
Hard drives and hard drive carriers in drive bays 1 and • 2
PCI Express card installed in slot • 1
Any 12-inch PCI Express card• s
Top and bottom memory card• s
Processor heatsink cove• r
Front fan assembl• y 

Mac Pro Take Apart — USB Cable 88
Part Location 

Mac Pro Take Apart — USB Cable 89
Procedure
Disconnect the USB cable from connector J201 on the front panel board.1. 
Disconnect the USB cable from connector J2D1 on the logic board. 2.  
Remove the cable from the enclosure.3.  

Mac Pro Take Apart — Logic Board 90
Logic Board
Note: Every time you remove the logic board, you must replace the thermal grease on the 
processor heatsinks. New grease and alcohol wipes for removing the previous grease are 
included with replacement logic boards. Instructions for applying the grease are included with 
the processor heatsinks procedure.
Tools
The only tool required for this procedure is a magnetized Phillips #1 screwdriver.
Preliminary Steps
Before you begin, open the computer, lay it on...