Einleitung
The communication board sends information about the aperture and focus of the lens. If you are having trouble with focus or aperture, then there may be a problem with the communication board.
Werkzeuge
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Remove the three loose parts (spring, small rod, and metal ring) that were under the lens mount and put them aside.
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Use 00 Phillips head screwdriver to remove the screw from the bottom of the front black case.
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Use a 00 Phillips head screwdriver to remove the screws from either side of the communication board.
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Abschluss
To reassemble your device, follow these instructions in reverse order.