跳转到主内容

简介

This guide details removing the logic board in a iMac Intel 21.5" EMC 3068 in order to remove or replace the RAM.

Some images in this guide use a 2015 iMac, which has minor visual differences. These differences do not affect the repair procedure.

This guide is marked "potentially dangerous" because it requires you to handle a power supply that contains large capacitors. Unplug the iMac and hold the power button down for at least 10 seconds to help discharge the capacitors. Handle the board by the edges and do not touch surface components.

    • With the hinge free to move, the iMac will be unbalanced and hard to work on. Repairs are fast and easy with an iMac service wedge, but can be completed without one.

    • If you are using the iFixit cardboard service wedge, follow these assembly directions to put it together.

    • Before beginning any work on your iMac: Unplug the computer and press and hold the power button for ten seconds to discharge the power supply's capacitors.

    • Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

  1. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 2 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 2 中的图像 2,2
    • Starting on the left of the display, near the power button, insert the iMac Opening Tool into the gap between the glass panel and the rear enclosure.

    • The hub on the iMac Opening Tool will keep you from pushing the wheel in too far. If using a different tool, insert no more than 3/8" into the display. Otherwise, you risk severing antenna cables and causing serious damage.

  2. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 3 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 3 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 3 中的图像 3,3
    • Use the tool like a pizza cutter—roll it along through the gap, and it will cut the foam adhesive through the center.

    • Be sure to always push with the handle behind the cutting wheel. If you pull, the wheel might get pulled out of the handle.

    • Run the tool up along the left side of the display.

  3. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 4 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 4 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 4 中的图像 3,3
    • Continue running the tool up around the top left corner.

  4. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 5 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 5 中的图像 2,2
    • Cut the adhesive along the top left of the display.

  5. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 6 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 6 中的图像 2,2
    • Continue along the top of the display.

    • You may want to run the tool back and forth through what you've already cut a few times, to ensure you get as much of the adhesive separated as possible.

  6. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 7 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 7 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 7 中的图像 3,3
    • Push the tool around the top right corner of the display.

  7. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 8 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 8 中的图像 2,2
    • Wheel the tool down along the right side of the display.

  8. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 9 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 9 中的图像 2,2
    • Finish pushing the opening tool to the bottom of the right side of the display.

    • At this point, you'll want to run the tool back around the entire display, to ensure you cut as much adhesive as possible.

  9. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 10 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 10 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 10 中的图像 3,3
    • While the opening tool cut most of the adhesive, the display will still be slightly adhered to the case. A plastic card will be necessary to free up the last of this adhesive.

    • Set the iMac face-up on a table.

    • Starting from the top right corner of the iMac, wedge a plastic card between the display and frame.

    • Be careful not to insert the plastic card more than 3/8", or you may damage internal components.

  10. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 11 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 11 中的图像 2,2
    • Gently twist the plastic card sideways to create a gap between the display and frame.

    • Move slowly and be careful not to stress the display glass too much—you only need to make a gap of about 1/4".

  11. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 12 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 12 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 12 中的图像 3,3
    • Slide the card toward the center of the display to cut any of the remaining adhesive along the top right corner of the iMac.

    • Be sure to stop before the iSight camera, or you may damage it.

  12. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 13 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 13 中的图像 2,2
    • Wedge the plastic card into the top right corner once again, and leave it there to prevent the adhesive from resticking.

  13. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 14 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 14 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 14 中的图像 3,3
    • Insert a second plastic card into the gap between the display and frame near the top left corner of the iMac.

  14. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 15 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 15 中的图像 2,2
    • Gently twist the card upward, slightly increasing the space between the display and frame.

    • As with the other side, twist slowly to allow the adhesive time to separate, and be careful not to over-stress the display glass.

  15. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 16 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 16 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 16 中的图像 3,3
    • Slide the plastic card toward the center, again stopping just before the iSight camera.

  16. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 17 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 17 中的图像 2,2
    • Wedge the plastic card back into the top left corner.

  17. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 18 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 18 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 18 中的图像 3,3
    • With both plastic cards inserted as shown near the corners, gently twist the cards sideways to increase the gap between display and case.

    • If there are any sections that seem to stick and won't separate, stop twisting and use one of the cards to cut the remaining adhesive.

    • Begin to lift the top of the display up from the frame.

    • Only lift the display a few inches—the display data and power cables are still connected to the logic board.

  18. iMac Intel 21.5" EMC 3068 RAM Replacement, Display Assembly Cables: 步骤 19 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement, Display Assembly Cables: 步骤 19 中的图像 2,2
    • Lift the display up enough to have easy access to the connector, but not so much that you stretch the cables and stress their connections (about 8").

    • Hold the display with one hand while using your other hand to unplug the display power cable.

  19. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 20 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 20 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 20 中的图像 3,3
    • Continuing to support the display with one hand, flip up the metal retaining bracket on the display data cable.

    • Carefully pull the display data cable from its socket on the logic board.

    • Be sure to pull the display data cable connector straight out of its socket, keeping it parallel to the motherboard, to avoid damaging it.

  20. iMac Intel 21.5" EMC 3068 RAM Replacement, Display Assembly Separation: 步骤 21 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement, Display Assembly Separation: 步骤 21 中的图像 2,2
    • Lift the display up to a near-vertical position.

    • At this point there is still a strip of adhesive along the bottom of the display that will hold the display to the frame like a hinge. You can loosen this adhesive by working the display up and down a few times.

  21. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 22 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 22 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 22 中的图像 3,3
    • Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply (boxed in red).

    • Grasp the small tab at the end of one of the bottom edge display adhesive strips and pull the adhesive toward the top of the iMac to remove it.

    • Repeat this step with the other adhesive strip and remove it.

    • If either adhesive strip breaks before it's removed, use a plastic card to slice through the remaining adhesive.

  22. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 23 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 23 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 23 中的图像 3,3
    • Lift the display up from the frame and remove it from the iMac.

    • It may be necessary to slowly lift from one side to peel against the remaining adhesive.

    • Be very careful handling the display—it's big, heavy, and made of glass.

    • After the adhesive is cut, it cannot be used to re-seal the display in place. Follow this guide to replace the adhesive strips that secure the display to the rear enclosure.

  23. iMac Intel 21.5" EMC 3068 RAM Replacement, Lower Support Bracket: 步骤 24 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement, Lower Support Bracket: 步骤 24 中的图像 2,2
    • Remove the following five Phillips screws holding the lower support bracket in place:

    • Four 3.2 mm screws

    • One 1.7 mm screw

    • You may need to peel up the display adhesive lining the bottom edge of the iMac enclosure to access the screws.

  24. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 25 中的图像 1,1
    • Remove the lower support bracket (a.k.a. "chin strap") from the iMac enclosure.

  25. iMac Intel 21.5" EMC 3068 RAM Replacement, Hard Drive Brackets: 步骤 26 中的图像 1,1
    • Remove the following T10 Torx screws securing the hard drive brackets to the iMac:

    • Two 21 mm screws

    • One 9 mm screw

    • One 27 mm screw

  26. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 27 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 27 中的图像 2,2
    • Remove the left and right hard drive brackets from the iMac.

  27. iMac Intel 21.5" EMC 3068 RAM Replacement, Power Supply: 步骤 28 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement, Power Supply: 步骤 28 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement, Power Supply: 步骤 28 中的图像 3,3
    • The next few steps bring your hands close to the exposed face of the power supply. Do not touch the face of the power supply or any of the exposed solder. Touching it risks a high voltage shock from the many large capacitors attached to the board.

    • Use the tip of a spudger to push each side of the power button cable connector and gently walk it out of its socket.

  28. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 29 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 29 中的图像 2,2
    • Use the tip of a spudger to push each side of the power supply control cable connector and gently walk it out of its socket.

  29. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 30 中的图像 1,1
    • Remove the two 7.2 mm T8 Torx screws securing the power supply to the rear enclosure.

  30. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 31 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 31 中的图像 2,2
    • When working on the power supply, be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

    • Tilt the power supply forward.

  31. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 32 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 32 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 32 中的图像 3,3
    • Pull the power supply slightly up and out from the rear enclosure.

    • Rotate the power supply counterclockwise, lifting the right side up about an inch higher than the left.

  32. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 33 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 33 中的图像 2,2
    • Slide the power supply to the right to clear the screw posts on the rear enclosure.

  33. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 34 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 34 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 34 中的图像 3,3
    • Rock the power supply forward and remove it from its recess in the rear enclosure.

    • Do not try to completely remove the power supply from the iMac yet—it is still connected to the logic board.

  34. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 35 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 35 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 35 中的图像 3,3
    • Be very careful not to touch the capacitor leads or any exposed solder joints on the back of the power supply. Only handle the board by the edges.

    • Do not let any of the exposed solder joints come in contact with a metal surface, as that can cause a short.

    • Flip the power supply over to access the DC power cable connection behind the logic board.

    • To disconnect the cable, squeeze the release clip on the back side of the connector, behind the logic board, and pull the connector straight out.

  35. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 36 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 36 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 36 中的图像 3,3
    • You may find it helpful to set the iMac down on its back for the next couple of steps.

    • Use the flat end of a spudger to press the release clip on the side of the AC inlet cable connector inward.

    • While pressing on the release clip with the spudger, grasp the AC inlet cable, and pull the connector straight out of its socket.

  36. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 37 中的图像 1,1
    • Remove the power supply from the iMac.

  37. iMac Intel 21.5" EMC 3068 RAM Replacement, Fan: 步骤 38 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement, Fan: 步骤 38 中的图像 2,2
    • Gently pull the fan cable connector straight out of its socket on the logic board.

  38. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 39 中的图像 1,1
    • Remove the three 10 mm T10 Torx screws securing the fan to the rear enclosure.

    • The uppermost screw has a rubber standoff adhered to its head to support the display—leave this in place.

  39. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 40 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 40 中的图像 2,2
    • Remove the fan from the iMac.

  40. iMac Intel 21.5" EMC 3068 RAM Replacement, Hard Drive Assembly: 步骤 41 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement, Hard Drive Assembly: 步骤 41 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement, Hard Drive Assembly: 步骤 41 中的图像 3,3
    • Lift the hard drive from the edge nearest the logic board and pull it slightly out of its recess.

    • The hard drive is attached by a single SATA power/data cable—do not attempt to fully remove it from the iMac yet.

  41. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 42 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 42 中的图像 2,2
    • Use a spudger to disconnect the single SATA power and data combo cable by gently prying its large plastic connector away from the hard drive.

  42. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 43 中的图像 1,1
    • Remove the hard drive assembly from the iMac.

  43. iMac Intel 21.5" EMC 3068 RAM Replacement, Hard Drive Tray: 步骤 44 中的图像 1,1
    • Remove the 7.3 mm T8 Torx screw securing the hard drive tray to the rear enclosure.

  44. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 45 中的图像 1,1
    • Remove the hard drive tray.

  45. iMac Intel 21.5" EMC 3068 RAM Replacement, Logic Board Assembly: 步骤 46 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement, Logic Board Assembly: 步骤 46 中的图像 2,2
    • Gently pull the left speaker cable straight out of its socket on the logic board.

  46. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 47 中的图像 1,1
    • De-route the left speaker cable by pulling it straight up out of the retaining clip in the back of the rear enclosure.

  47. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 48 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 48 中的图像 2,2
    • Similarly to the previous step, de-route the SATA and power cables by pulling the braid straight up out of the retaining clip.

  48. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 49 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 49 中的图像 2,2
    • Peel up the piece of tape connecting the left speaker connector to the SATA power and data cables.

  49. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 50 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 50 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 50 中的图像 3,3
    • Flip up the metal retaining bracket on the FaceTime camera cable connector.

    • Pull the FaceTime camera cable straight out of its socket on the logic board.

    • This is a delicate connector that can be easily damaged.

  50. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 51 中的图像 1,1
    • Remove the two 4.0 mm T5 Torx screws securing the four antenna connectors to the AirPort/Bluetooth card.

  51. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 52 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 52 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 52 中的图像 3,3
    • Disconnect all four antenna connectors by prying them straight up from their sockets on the AirPort/Bluetooth card.

  52. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 53 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 53 中的图像 2,2
    • Gently pull the right speaker cable connector parallel to the logic board, straight out of its socket on the logic board.

  53. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 54 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 54 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 54 中的图像 3,3
    • Use the flat edge of a spudger to pry the headphone jack cable connector from its socket on the logic board.

    • Push the cable slightly to the right.

  54. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 55 中的图像 1,1
    • Peel off the tape covering the exhaust duct.

  55. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 56 中的图像 1,1
    • Remove the following T8 Torx screws securing the exhaust duct to the rear enclosure:

    • Two 6.2 mm screws

    • Two 4.7 mm screws

  56. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 57 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 57 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 57 中的图像 3,3
    • Use the tip of a spudger to flip open the retaining flap on the microphone ribbon cable ZIF socket.

    • Be sure you are prying up on the hinged retaining flap, not the socket itself.

    • Gently pull the microphone ribbon cable straight out of its socket.

  57. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 58 中的图像 1,1
    • Remove the four 7.3 mm T8 Torx screws securing the logic board to the rear enclosure.

  58. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 59 中的图像 1,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 59 中的图像 2,3 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 59 中的图像 3,3
    • Tilt the top of the logic board away from the rear enclosure.

    • When removing and installing the logic board, take care not to damage the delicate microphone ribbon cable at the bottom left.

    • Lift the logic board straight up and out of the iMac.

    • Be careful not to snag the board on any of the rear enclosure's screw posts.

  59. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 60 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 60 中的图像 2,2
    • When reassembling your iMac, be sure to align the exterior I/O ports correctly. The logic board can sit crooked even when secured with all its screws.

    • Use a USB flash drive and/or ethernet cable to ensure the logic board is aligned correctly while you screw it in.

  60. iMac Intel 21.5" EMC 3068 RAM Replacement, RAM: 步骤 61 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement, RAM: 步骤 61 中的图像 2,2
    • Handling the board by the edges, flip the logic board over to access the two RAM modules.

    • Two clips secure the RAM module in place, one on each side. Using your fingers, spread the clips away from the RAM module.

    • When released, the RAM module will pop up at a slight angle.

  61. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 62 中的图像 1,2 iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 62 中的图像 2,2
    • Lift the RAM module to an angle of about 30 degrees and slide it out.

    • When handling the RAM module, touch only the outside edges. Take care not to touch the gold-colored contact points along the bottom edge.

    • To install a new RAM module, slide it in place at about the same angle until it is snug, and then swing it downward until the two clips snap into place.

  62. iMac Intel 21.5" EMC 3068 RAM Replacement: 步骤 63 中的图像 1,1
    • The original RAM module closer to the logic board has a thermal pad adhered to its top side (facing away from the logic board, between the two DIMMs).

    • Peel off and transfer the thermal pad from the original RAM stick to your replacement RAM before you install it in the lower slot.

结论

To reassemble your iMac, follow these instructions in reverse order.

25等其他人完成本指南。

Adam O'Camb

于2015年04月11日注册

169,794 声望

创作了418篇指南

7条评论

Thought this was going to be extremely difficult but once I started with these instructions it actually wasn’t that bad, though it took me a slow and careful 3.5 hours. Was quite nervous handling that power supply though!

Chris Caldwell - 回复

Excellent guide! It took me about 1.5 hours to complete the entire RAM+SSD installation. The iMac has massively improved and feels like a new computer: way way faster than before, with a 1TB Samsung SSD, 32GB of RAM and a brand new installation of macOS Catalina. Be very careful with the I/O ports, especially with the USB-C/Thunderbolt ones: the alignment is critical, as well as the correct position of the logic board in relation to the case. Even a slight misalignment can impede the USB-C plug from fully entering the port, making it hard or impossible to establish a connection.

Mattia - 回复

Great guide… took a mediocre “unupgradable” iMac to 32 GB ram and new SSD HD (the other guide… but crosses with this). Excellent guidance. If you have to fix or upgrade anything else while changing out the RAM, this is the time and performed steps to do it with. Read the others to see the variations you need to do (like steps to clone the HD before changing, etc.) but as deep as you get into this machine, it exposes pretty much everything. Again, great work!

chucknut7 - 回复

Wonderful guide! I was afraid that I am not going to make it since I don’t have a lot of experience in such things but following the steps carefully, paying attention to every detail, has led me to successfully upgrade my iMac 3086 with 1TB SSD and 32GB RAM. I was really afraid that this RAM upgrade probably won’t work because it’s been said on everymac.com that the maximum is 16GB and I’ve read somewhere about a person whose iMac didn’t even start after such intervention. I decided to purchase Crucial 2x16GB at 2400MHz, despite that the iMac has 2133Mhz bus. I trust this brand and I’ve already upgraded my MacBook Pro 15” mid-2012 with the same brand, again pushing the RAM beyond the official limits and it still works great. The SSD I put here is also from Crucial and I just turned on the iMac and it runs like never before! The whole procedure took me a bit over 2 hours. Thanks for the great work with this guide!!!

Alexandra Zerner - 回复

Hey Alex, I’m also worried about the compatibility of the Crucial RAM, so could you tell me which especific model did you use, please?

bruno.kato -

添加评论

浏览统计数据:

过去 24 小时: 6

过去 7 天: 77

过去 30 天: 310

总计 15,023