Apple mac pro User Manual

							Mac Pro Take Apart — Logic Board 91
Part Location 
						

							Mac Pro Take Apart — Logic Board 92
Procedure
To keep them out of the way, temporarily tape the antenna cables to the bottom of the 1. 
media shelf. 
 
Important: Be sure to disconnect all cables from the logic board before you remove the 
logic board mounting screws. 
						

							Mac Pro Take Apart — Logic Board 93
Starting at the back panel side of the logic board and working clockwise around the board, 2. 
disconnect all cables from the logic board. 
Note: There are 14 cables you will be disconnecting from the logic board.   
						

							Mac Pro Take Apart — Logic Board 94
Using a magnetized #1 Phillips screwdriver, remove the eight black logic board mounting 3. 
screws.  
						

							Mac Pro Take Apart — Logic Board 95
Slide the logic board back a short distance from the port openings in the back panel. Make 4. 
sure the ports clear the openings.
Tilt the top edge of the logic board up and maneuver the board out of the enclosure.5.  
						

							Mac Pro Take Apart — Logic Board 96
Replacement Note: Before replacing the logic board, check the underside of the board to be 
sure that all bumpers are in place. Replace any missing bumpers.
Replacement Note: Also check that the two bumpers are in place by the upper processor on the 
top side of the logic board. Replace any missing bumpers. 
						

							Mac Pro Take Apart — Logic Board 97
Replacement Note: If you are replacing the logic board with a new logic board, do the following:
Remove the protective caps from the new logic board’s processor holders and transfer the • 
caps to the original logic board’s processor holders. Note that logic boards returned to Apple 
without the protective caps may be rejected. 
Warning: Be careful not to touch the gold pins in the processor socket on the logic board. 
						

							Mac Pro Take Apart — Logic Board 98
T• ransfer the following to the new board:
Processors•	
DIMMs•	
PCI Express/graphics cards•	
AirPort Extreme card (if installed)•	
Bluetooth card (if installed)•	
You must also transfer the back ports EMI shield to the new board.• 
Replacement Note: To replace the logic board, tilt the board as illustrated and lower it into the 
enclosure.
Note: Unlike in earlier Power Mac G5 computers, replacing a logic board in Mac Pro does not 
require running Apple Service Diagnostic for thermal calibration. 
						

							Mac Pro Take Apart — Logic Board 99
Important: For proper performance, all logic boards in Intel-based desktop computers and 
servers 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/ 
						

							Mac Pro Take Apart — Front Panel Board 100
Front Panel Board
Tools
The only tool required for this procedure is a long-handled, magnetized Phillips #1 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 heatsink cove• r
Front fan assembl• y