Introduction

The Macintosh IIsi has a case fan mouted on inside back of the computer case.

Image 1/1:
  • The fan recieves power from two contacts on the logic board and has no connector.

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Image 1/3: The best way to start, is to push in here on the side of the fan. Image 2/3: Being careful not to exert too much force, try to push in, and wiggle the fan outward as such. (2nd Photo) Image 3/3: You can now lift the fan all the way out, and remove it.
  • In all of the years that I have worked on this machine, I have found no good way to remove the fan.

  • The best way to start, is to push in here on the side of the fan.

  • Being careful not to exert too much force, try to push in, and wiggle the fan outward as such. (2nd Photo)

  • You can now lift the fan all the way out, and remove it.

  • The Fan Power Contacts on the Logic Board:

There is no need to pull out the fan. Just take a knife and you can squeeze the tab in step 7

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Conclusion

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

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Chris Green

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