Apple Processor Cage Fans warranty First Steps, Opening the Computer, Replacement Instructions

Models: Processor Cage Fans Front and Rear

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1Shut down computer.

2Wait 10 minutes.

Warning: Parts inside computer can be very hot. Allow computer to cool down before continuing.

3Unplug all external cables except power cord.

4Touch metal PCI cover on back of computer.

5Unplug power cord.

Computer

1Hold side access panel and lift latch on back of computer.

Warning: Edges of access panel and enclosure can be sharp. Be careful when handling.

2Remove access panel and place it on flat surface covered by soft, clean cloth.

Note: Follow these instructions carefully. Failure to do so could damage your equipment and void its warranty.

073-1254 Rev. A 1

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Contents

Opening the Computer First StepsReplacement Instructions Processor Cage Fans, Front and RearHard Drive Required ToolsRemoving the Installed Fans 3 Locate graphics card in slot Graphics Card5 Remove bracket from enclosure 073-1254 Rev. A 7 Move fan to left, which releases retention bar 6 Press button on PCIe fanChecklist for handling card 10 Locate processor tray Processor Tray073-1254 Rev. A 13 Place tray DIMM side up on soft, clean cloth PCIe Fan12 Holding tray by latches, lift it out of computer 14 Locate PCIe fan15 Remove 2 screws 16 Slide fan up and out of computer Processor Cage17 Locate processor cage 073-1254 Rev. A 19 Using long-handled Phillips #1 screwdriver, loosen 6 captive screws 24 Lift cage out of enclosure Processor Cage Fans25 Locate processor cage fans 073-1254 Rev. A 27 Release 4 latches on front fan and slide fan out of cage 26 Release fan cables from clips on bottom of processor cageNote Latch #4 is on inside of cage 28 Repeat above step for rear fan 2009 Apple Inc. All rights reserved1 IPosition front fan in cage Installing the Replacement Fans2 Slide fan back until it engages with the 4 latches 3 Repeat above two steps for rear fanPCIe Fan Processor Cage5 Position cage in enclosure Processor Tray 15 Reinstall graphics card in slotGraphics Card Slide PCIe fan to the right to lock card in place1 Replace access panel Closing the ComputerHard Drive 19 Replace hard drive in far-left drive bay