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Apple Front and Rear Press button on PCIe fan, Move fan to left, which releases retention bar

Models: Processor Cage Fans Front and Rear

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Note: Card is held in place by retention bar. Following two steps explain how to release bar.

6Press button on PCIe fan.

7Move fan to left, which releases retention bar.

Note: Some graphics cards require 1 or 2 booster cables connecting card to auxiliary power connectors on backplane board. If your card has booster cables, disconnect them from backplane board.

073-1254 Rev. A 4

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Apple Front and Rear, Processor Cage Fans warranty Press button on PCIe fan, Move fan to left, which releases retention bar

Contents

First Steps Opening the ComputerReplacement Instructions Processor Cage Fans, Front and RearHard Drive Required ToolsRemoving the Installed Fans Graphics Card 3 Locate graphics card in slot5 Remove bracket from enclosure 073-1254 Rev. A 6 Press button on PCIe fan 7 Move fan to left, which releases retention barChecklist for handling card 10 Locate processor tray Processor Tray073-1254 Rev. A PCIe Fan 13 Place tray DIMM side up on soft, clean cloth12 Holding tray by latches, lift it out of computer 14 Locate PCIe fanProcessor Cage 15 Remove 2 screws 16 Slide fan up and out of computer17 Locate processor cage 073-1254 Rev. A 19 Using long-handled Phillips #1 screwdriver, loosen 6 captive screws Processor Cage Fans 24 Lift cage out of enclosure25 Locate processor cage fans 073-1254 Rev. A 26 Release fan cables from clips on bottom of processor cage 27 Release 4 latches on front fan and slide fan out of cageNote Latch #4 is on inside of cage 28 Repeat above step for rear fan 2009 Apple Inc. All rights reservedInstalling the Replacement Fans 1 IPosition front fan in cage2 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 15 Reinstall graphics card in slot Processor TrayGraphics Card Slide PCIe fan to the right to lock card in placeClosing the Computer 1 Replace access panelHard Drive 19 Replace hard drive in far-left drive bay