Apple Processor Cage Fans warranty Release fan cables from clips on bottom of processor cage

Models: Processor Cage Fans Front and Rear

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28 Repeat above step for rear fan.

073-1254 Rev. A 11

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Contents

Processor Cage Fans, Front and Rear First StepsOpening the Computer Replacement InstructionsRemoving the Installed Fans Required ToolsHard Drive 073-1254 Rev. A Graphics Card3 Locate graphics card in slot 5 Remove bracket from enclosure7 Move fan to left, which releases retention bar 6 Press button on PCIe fanChecklist for handling card 073-1254 Rev. A Processor Tray10 Locate processor tray 14 Locate PCIe fan PCIe Fan13 Place tray DIMM side up on soft, clean cloth 12 Holding tray by latches, lift it out of computer073-1254 Rev. A Processor Cage15 Remove 2 screws 16 Slide fan up and out of computer 17 Locate processor cage19 Using long-handled Phillips #1 screwdriver, loosen 6 captive screws 073-1254 Rev. A Processor Cage Fans24 Lift cage out of enclosure 25 Locate processor cage fans2009 Apple Inc. All rights reserved 26 Release fan cables from clips on bottom of processor cage27 Release 4 latches on front fan and slide fan out of cage Note Latch #4 is on inside of cage 28 Repeat above step for rear fan3 Repeat above two steps for rear fan Installing the Replacement Fans1 IPosition front fan in cage 2 Slide fan back until it engages with the 4 latches5 Position cage in enclosure Processor CagePCIe Fan Slide PCIe fan to the right to lock card in place 15 Reinstall graphics card in slotProcessor Tray Graphics Card19 Replace hard drive in far-left drive bay Closing the Computer1 Replace access panel Hard Drive