Assessments - 5, GPA: 4
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Failure to do so could damage your equipment and void its warranty. 1 Shut down computer. 2 Wait 10 minutes. Warning: Parts inside computer can be very hot. Allow computer to cool down before continuing. 3 Unplug all external cables except power cord. 4 Touch metal PCI cover on back of computer. 5 Unplug power cord. Opening the Computer 1 Hold side access panel and lift latch on back of computer. Warning: Edges of access panel and enclosure can be sharp. Be careful when handling. 2 Remove access panel and place it on flat surface covered by soft, clean cloth. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A Required Tools • Phillips #2 screwdriver • RIght-angle, 2.5 mm hex driver • Flatblade screwdriver • Long-handled Phillips #1 screwdriver Removing the Installed Cable Before removing the front panel board cable, you must remove: • Hard drive in far-left drive bay • Graphics card in slot 1 • Processor tray • PCIe fan • Processor cage Hard Drive 1 Make sure latch on back panel is up, so that drive is unlocked. 2 Pull hard drive out of far-left drive bay. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A Graphics Card 3 Locate graphics card in slot 1. 4 Using Phillips #1 screwdriver, loosen 2 captive screws securing card’s bracket to enclosure. 5 Remove bracket from enclosure. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A Note: Card is held in place by retention bar. Following two steps explain how to release bar. 6 Press button on PCIe fan. 7 Move 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. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 8 Holding card by top corners, pull it up out of slot. 9 Remove card from computer. Checklist for handling card: • When removing or installing card, handle it only by the edges. Do not touch its connectors or any components. • Don’t rock card from side to side; instead, lift card straight up from connecotr to remove it, and press card straight into slot to install it. • Don’t force card. If you meet a lot of resistance, pull card out. Check connector and slot for damage or obstructions, then try inserting card again. • Pull card gently to see if it is properly connected. If it resists and stays in place and its gold connectors are barely visible, card is connected. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A Processor Tray 10 Locate processor tray. 11 Press down and release 2 latches on front of processor tray. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 12 Holding tray by latches, lift it out of computer. 13 Place tray DIMM side up on soft, clean cloth. PCIe Fan 14 Locate PCIe fan. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 15 Remove 2 screws. 16 Slide fan up and out of computer. Processor Cage 17 Locate processor cage. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 18 Disconnect 3 cables from logic board. 19 Using long-handled Phillips #1 screwdriver, loosen 6 captive screws. 20 Rotate computer to stand vertically. Using 2.5 mm hex driver, remove 5 mushroom- head screws. 21 To release 2 latches holding front fan to cage, press down on bottom of cage while using flatblade screwdriver to release latch from top of cage. 22 Slide fan partway into cage, so that fan clears enclosure. 23 Repeat steps 4 and 5 for rear fan. Note: Processor cage includes two fans, one at each end of cage. Before removing cage from enclosure, you must release 2 latches on each fan and push fans partway into cage. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 24 Lift cage out of enclosure. Front Panel Board Cable 25 Locate front panel board cable. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 10 26 Disconnect cable from front panel board and backplane board. 27 Remove cable from enclosure. Installing the Replacement Cable 1 Connect replacement cable to front panel board and backplane board. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 11 Processor Cage Important: Before you reinstall cage into enclosure, fans must be inserted partway into cage. 2 Position cage in enclosure. 3 Slide front and rear fans into place, so that they engage with latches. 4 Replace and tighten 5 mushroom-head screws. 5 Secure 6 captive screws. 6 Reconnect 3 cables. PCIe Fan 7 Slide fan into enclosure so that fan tabs engage with slots on metal cage. 8 Press down until fan clicks into place in connector. 9 Replace 2 screws. © 2009 Apple Inc. All rights reserved. 073-1257 Rev. A 12 Processor Tray 10 Holding tray by latches, lower it into processor cage. 11 Make sure latches are closed flush with front of processor tray. Graphics Card 12 Reinstall graphics card in slot 1. Note: Align card’s connector with expansion slot and press down until connector is inserted all the way into slot. If installing a 12-inch card, make sure card engages correct ...