User Guide

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 its side with the access side facing up, and remove
the following:
All hard drives and hard drive carrier• s
All PCI Express card• s
Top and bottom memory card• s
Processor heatsink cove• r
Front fan assembl• y
Processor heatsink• s
Memory cag• e
Speaker assembl• y
USB cabl• e
AirPort Ex• treme card (if installed)
Bluetooth card (if installed• )