Canon EOS Rebel T2i Dioptric Adjustment Lens Replacement

Turn off camera using the power button on the top of the camera.

On the bottom of the camera, open the battery door and remove the battery.

Remove the 7 screws from the bottom of the camera using a Phillips screwdriver

On the top cover, remove the two screws from under the metal tabs that are used to attach the camera straps.

Remove the two screws on the right side of the camera.

Remove 1 screw from the left side of the camera.

Inside the rubber door, remove the two black screws.

Remove the two screws beneath the eyepiece

Remove the screw in the center of the viewfinder focus knob located to the right of the eyepiece.

Remove the two black screws on the front of the camera just above the lens mounting ring.

NOTE: Do not remove any of the silver screws on the lens mount ring. This could cause problems with auto focussing features.

Using the spudger and plastic opening tool, pry the back of the camera loose.

Remove the ribbon connector on the lower left hand side of the circuit board.

Using the spudger and plastic opening tool, pry the bottom of the front panel of the camera over the tripod mount.

Remove the ribbon connector on the upper right hand side of the circuit board.

Remove the microphone connection on the upper left hand side of the circuit board.

On the lower left side on the front of the camera, disconnect the red and yellow wires from the circuit board.

Pull the top cover free.

Remove the red wire that travels across the mirror box.

Remove the 4 screws holding the mirror box in place.

Remove 3 screws to disconnect the ribbon mount assembly

Now that the top assembly is free, this exposes another screw on the right side of the mirror box.

Remove this screw.

Remove the orange ribbon cable.

Remove the viewfinder assembly from the camera.The screws that hold the eyepiece in place are accessible. Remove these 3 screws from the rear face of the eyepiece. Two screws are located at the bottom and one screw is located on top.

With the screws removed, the eyepiece can easily be pulled free.

Swivel the dioptric lens 90 degrees.

Remove pin with tweezers.

Compress spring and remove spring and dioptric lens assembly