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iMac Intel 21.5" EMC 2308 Logic Board Replacement

Potenziell gefährlich

Potenziell gefährlich

Es besteht Verletzungsgefahr, wenn die Anweisungen nicht ordnungsgemäß befolgt werden. Sei vorsichtig und befolge alle Warnhinweise.

Use this guide to remove your logic board.

Abschnitte
Werkzeuge

Schritt 1 Logic Board  ¶ 

Pull the left and right speaker connectors toward the right side of the iMac to disconnect them from the logic board.

Schritt 1 Logic Board  ¶ 

  • Pull the left and right speaker connectors toward the right side of the iMac to disconnect them from the logic board.

Schritt 2  ¶ 

Disconnect the audio port cable by pulling its connector toward the right side of the iMac.

Schritt 2  ¶ 

  • Disconnect the audio port cable by pulling its connector toward the right side of the iMac.

Schritt 3  ¶ 

Disconnect the AirPort cable by lifting its connector off the socket on the logic board.

Schritt 3  ¶ 

  • Disconnect the AirPort cable by lifting its connector off the socket on the logic board.

  • Lift the connector perpendicular to the face of the logic board.

Schritt 4  ¶ 

Disconnect the following cables by pulling their connectors toward the top edge of the iMac:

Schritt 4  ¶ 

  • Disconnect the following cables by pulling their connectors toward the top edge of the iMac:

  • Camera cable

  • Hard drive thermal sensor

  • Hard drive fan

  • Microphone

  • Disconnect the following cables by pulling their connectors toward the right edge of the iMac:

  • Ambient temperature sensor

  • Bluetooth cable

Schritt 5  ¶ 

Disconnect the CPU fan and power button by pulling their connectors toward the left edge of the iMac.

Schritt 5  ¶ 

  • Disconnect the CPU fan and power button by pulling their connectors toward the left edge of the iMac.

Schritt 6  ¶ 

If present, remove the piece of tape covering the IR sensor connector. Disconnect the IR sensor by pulling its connector toward the top edge of the iMac.

Schritt 6  ¶ 

  • If present, remove the piece of tape covering the IR sensor connector.

  • Disconnect the IR sensor by pulling its connector toward the top edge of the iMac.

Schritt 7  ¶ 

Use your fingers to lift IR sensor assembly straight up out of the outer case.

Schritt 7  ¶ 

  • Use your fingers to lift IR sensor assembly straight up out of the outer case.

Schritt 8  ¶ 

Remove the following six screws securing the logic board to the outer case:

Schritt 8  ¶ 

  • Remove the following six screws securing the logic board to the outer case:

  • Three 25 mm T10 Torx

  • Two 21.5 mm T10 Torx

  • One 7 mm T10 Torx

Schritt 9  ¶ 

Remove the plastic ducts from the side of the LED driver board and the hard drive by pulling them away from the outer case. Remove the plastic ducts from the side of the LED driver board and the hard drive by pulling them away from the outer case.

Schritt 9  ¶ 

  • Remove the plastic ducts from the side of the LED driver board and the hard drive by pulling them away from the outer case.

Schritt 10  ¶ 

Carefully remove the aluminum tape attaching the GPU heat sink to the outer case.

Schritt 10  ¶ 

  • Carefully remove the aluminum tape attaching the GPU heat sink to the outer case.

  • It is not necessary to completely remove the aluminum tape from the GPU heat sink.

Schritt 11  ¶ 

In the following steps, you will maneuver the logic board out from the outer case. In doing so, be aware of the many cables still attaching the logic board to the outer case.

Schritt 11  ¶ 

  • In the following steps, you will maneuver the logic board out from the outer case. In doing so, be aware of the many cables still attaching the logic board to the outer case.

  • Be sure the logic board clears the plastic lower optical drive fan mounting pin before lifting it up, as it is easily snapped off.

Schritt 12  ¶ 

Carefully pull the logic board slightly away from the outer case.

Schritt 12  ¶ 

  • Carefully pull the logic board slightly away from the outer case.

  • While holding the board away from the outer case, rotate the board back and forth while lifting up to release it from the outer case.

Schritt 13  ¶ 

Now that the lower edge of the board is free from the outer case, rotate the logic board toward yourself to expose its rear face. The following connector has a tendency to stick in its socket. If so, insert a metal spudger into the gap between the connecter and its socket. Twist the spudger to separate the two components.

Schritt 13  ¶ 

  • Now that the lower edge of the board is free from the outer case, rotate the logic board toward yourself to expose its rear face.

  • The following connector has a tendency to stick in its socket. If so, insert a metal spudger into the gap between the connecter and its socket. Twist the spudger to separate the two components.

  • Carefully pull the optical drive connector away from its socket on the logic board.

  • Pull the connector perpendicular to the face of the logic board.

Schritt 14  ¶ 

Disconnect the DC-In cable from the logic board by simultaneously depressing the locking lever on the connector while pulling it away from its socket.

Schritt 14  ¶ 

  • Disconnect the DC-In cable from the logic board by simultaneously depressing the locking lever on the connector while pulling it away from its socket.

  • Remove the logic board from the outer case.

  • During reassembly of the logic board, pay attention to the position of the I/O connectors. When the board is back in the case, insert a USB or Thunderbolt cable into one of the connectors to align it perfectly.