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Apple Memory DIMMs manual

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Table of contents for the manual

  • Page 1

    07 3-1 246 Rev . B 1 © 2009 Apple Inc . All rights reserved.  Mac P ro F irst Steps Shut down computer . 1 2 W ait 1 0 minutes. W arning: Parts inside computer can be very hot. Allow comput er to cool down bef ore continuing . Unplug all external 3 cables exc ept power cord . T ouch metal PCI cover 4 on back of computer . Unplug power cor d. 5 [...]

  • Page 2

    07 3-1 246 Rev . B 2 © 2009 Apple Inc . All rights reserved. Memor y C onguration DIMMs reside on the computer’ s processor board , which is laid out in two congurations . Check the illustrations on this page to determine if you hav e a quad-core or 8-core conguration. Specications DIMMs for your computer must t these specicati[...]

  • Page 3

    07 3-1 246 Rev . B 3 © 2009 Apple Inc . All rights reserved. F illing Slots If you are installing DIMMs that are of the same size , follow the order in the tables on pages 3 and 4. If you are installing di erent-size DIMMs, also refer to “Memory Slot Utility ” on page 4. Quad-Cor e Memor y Quad-core computers have f our memor y slots. Y ou [...]

  • Page 4

    07 3-1 246 Rev . B 4 © 2009 Apple Inc . All rights reserved. 8-Cor e Memor y Eight-core comput ers have eight memory slots, four per proce ssor . Y ou can install 1 GB, 2 GB, or 4 GB DIMMs for a total of up to 3 2 GB of memory . Each processor’ s memor y controller has thr ee memor y channels. DIMM slots 1, 2, 5, and 6 have their own channels; s[...]

  • Page 5

    07 3-1 246 Rev . B 5 © 2009 Apple Inc . All rights reserved. Removing the Installed DIMM Because memory DIMMs are installed on the computer’ s processor board , before y ou can remove a DIMM, you must remove the pr ocessor tray . Locate pr ocessor tray . 1 2 Pr ess down and release 2 latches on front of proce ssor tray .[...]

  • Page 6

    07 3-1 246 Rev . B 6 © 2009 Apple Inc . All rights reserved. 3 Holding tray by latches , lift it out of computer . Place tray DIMM side 4 up on soft, clean cloth. Important: W hen removing or installing DIMM, be careful of nearby heatsink ns , as they can be sharp. Always handle DIMM only by the edges. Do not touch its connectors or any compone[...]

  • Page 7

    07 3-1 246 Rev . B 7 © 2009 Apple Inc . All rights reserved. Installing the Replacement DIMM 1 Align DIMM in slot on processor board . Push both ends of 2 DIMM down until ejectors snap back up into place . Note: If a black sticker covers bar code label on DIMM you are replacing , remove sticker bef ore returning DIMM to Apple . (Ser vice DIMMs do [...]

  • Page 8

    07 3-1 246 Rev . B 8 © 2009 Apple Inc . All rights reserved. Closing the C omputer 1 Replace access panel. Note: Make sure latch is up befor e you replace panel. If latch is down, panel will not seat correctly . Push latch do wn 2 to close and secure access panel. W arning: Never turn on computer unless all its internal and external par ts are in [...]

  • Page 9

    07 3-1 246 Rev . B 9 © 2009 Apple Inc . All rights reserved. Memor y Diagnostic LEDs Important: The quad- core and 8-core pr ocessor boards include a set of diagnostic memor y LEDs. After re-installing or replacing a DIMM, alwa ys use the LEDs to verify the DIMM is correctly seated. T o verify your DIMM installation, do this: Start up the 1 comput[...]

  • Page 10

    07 3-1 246 Rev . B 10 © 2009 Apple Inc . All rights reserved. How to T roubleshoot Memor y LEDs F ollow this procedure when tr oubleshooting each DIMM identied by a red LED: Remove and re seat DIMM. 1. Restart computer . I f associated LED is no longer illuminated , issue is re solved. 2. If associated LED remains illuminated , replace DIMM wit[...]