はじめに

Use this guide to replace the monster 20" LCD housed within your iMac.

Lay the iMac display-side down on a flat surface.
  • Lay the iMac display-side down on a flat surface.

  • Loosen the three Phillips screws securing the rear panel to the iMac.

  • These screws are captive in the iMac. The center screw will stop turning after about 3.5 turns and the outer screws will stop turning after about 5.5 turns. Do not try to remove these screws from your iMac.

Some models (with light sensor) have only the two outboard screws.

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Lift the rear panel slightly near the bottom of the iMac. Pull the rear panel toward yourself and remove it from the iMac.
  • Lift the rear panel slightly near the bottom of the iMac.

  • Pull the rear panel toward yourself and remove it from the iMac.

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Rotate each of the two RAM retaining arms away from the RAM chip. Pull the RAM chip straight away from its socket.
  • Rotate each of the two RAM retaining arms away from the RAM chip.

  • Pull the RAM chip straight away from its socket.

  • Repeat this process for the other RAM chip.

  • Be sure the RAM arms are rotated fully outward before installing new RAM chips.

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Remove the following three screws securing the inverter to the chassis:
  • Remove the following three screws securing the inverter to the chassis:

    • Two 7.9 mm Phillips.

    • One 26 mm Phillips.

  • When reinstalling the inverter, be careful to route the purple and black cables around the screw mount. It is very easy to pinch the cable and damage the insulation.

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Slide the inverter toward the edge of the mid-plane, then lift it out of the iMac. Be careful to not pry up against the RAM brackets.
  • Slide the inverter toward the edge of the mid-plane, then lift it out of the iMac.

  • Be careful to not pry up against the RAM brackets.

  • When reinstalling the inverter, press the blue and white cables down in the edge of the midplane before lowering the inverter down into the midplane. The black cable can be routed near the hard drive thermal sensor cable.

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Disconnect the large inverter cable connector from the inverter by pulling straight away from its socket.
  • Disconnect the large inverter cable connector from the inverter by pulling straight away from its socket.

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Disconnect the small inverter cable connector by pulling it straight away from its socket.
  • Disconnect the small inverter cable connector by pulling it straight away from its socket.

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Disconnect the hard drive thermal sensor cable from the thermal sensor board on the hard drive bracket by pulling the cable away from the heat sink.
  • Disconnect the hard drive thermal sensor cable from the thermal sensor board on the hard drive bracket by pulling the cable away from the heat sink.

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Gently pull the black inverter cable to disconnect it from the logic board.
  • Gently pull the black inverter cable to disconnect it from the logic board.

  • If you have trouble plugging this cable back in during reinstallation, remove the fan duct for more room to work.

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Flip up the inverter cable cover from its left edge and lift it out of the chassis.
  • Flip up the inverter cable cover from its left edge and lift it out of the chassis.

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De-route the inverter cables from the inverter cable cover hook.
  • De-route the inverter cables from the inverter cable cover hook.

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Remove the inverter cables from the inverter cable cover, and disconnect both connectors. Remove the inverter cables from the inverter cable cover, and disconnect both connectors. Remove the inverter cables from the inverter cable cover, and disconnect both connectors.
  • Remove the inverter cables from the inverter cable cover, and disconnect both connectors.

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If you wish to replace just the inverter board, use a spudger to pry off its plastic cover. If you wish to replace just the inverter board, use a spudger to pry off its plastic cover.
  • If you wish to replace just the inverter board, use a spudger to pry off its plastic cover.

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Remove the four 7 mm Phillips screws securing the optical drive to the midplane.
  • Remove the four 7 mm Phillips screws securing the optical drive to the midplane.

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Pull the optical drive up by its white pull tab to disconnect it from the logic board. Lift the free end of the optical drive just enough to clear the fan cover.  Lifting the free end of the optical drive too far may break the plastic positioning pins off the front bezel.
  • Pull the optical drive up by its white pull tab to disconnect it from the logic board.

  • Lift the free end of the optical drive just enough to clear the fan cover. Lifting the free end of the optical drive too far may break the plastic positioning pins off the front bezel.

  • Lift the free end of the optical drive slightly, then pull it away from the edge of the rear case to clear the two plastic positioning pins.

  • Lift the optical drive out of your iMac.

  • When reinstalling your optical drive it may be necessary to set the bezel attached to the open end of the drive on the plastic positioning pins molded into the front bezel of the iMac and pull the connector side of the drive toward the edge of the rear case, bending it outward slightly, to properly seat the connector.

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Remove the two 7.3 mm shouldered Phillips screws securing the display cable connector to the logic board.
  • Remove the two 7.3 mm shouldered Phillips screws securing the display cable connector to the logic board.

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Pull the display data cable up off the logic board by its black pull tab. De-route the display cable from the two aluminum fingers in the mid-plane.
  • Pull the display data cable up off the logic board by its black pull tab.

  • De-route the display cable from the two aluminum fingers in the mid-plane.

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Loosen the center Phillips screw securing the power supply to the front case.
  • Loosen the center Phillips screw securing the power supply to the front case.

  • This screw will remain captive in the power supply.

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Remove the four coarse-thread 7.8 mm Phillips screws along the top edge of the iMac.
  • Remove the four coarse-thread 7.8 mm Phillips screws along the top edge of the iMac.

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Remove the following two screws:
  • Remove the following two screws:

    • One 7 mm Phillips.

    • One 26 mm Phillips.

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Lift the midplane assembly out of the front case.
  • Lift the midplane assembly out of the front case.

  • Be mindful of the inverter cables on the hard drive side of the midplane that may get caught as you lift out the midplane.

  • During reinstallation, insert the screw heads protruding from the speakers along the lower edge of the midplane into the holes in the front bezel and thread the inverter cables through the openings in the midplane before lowering the top edge down into the front bezel.

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Remove the six 7.2 mm coarse-thread T10 Torx screws securing the display to the front case.
  • Remove the six 7.2 mm coarse-thread T10 Torx screws securing the display to the front case.

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Lift the display out of the front case.
  • Lift the display out of the front case.

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まとめ

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

15 の人々がこのガイドを完成させました。

Andrew Bookholt

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Excellent Thank you

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