Difficulty

Moderate

Steps

22

Time Required

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Sections

1

  • Dioptric Adjustment Lens
  • 22 steps

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  • BackCanon EOS Rebel T2i / 550D

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What you need

Step 1

              Dioptric Adjustment Lens               
  • 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.

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.

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Step 2

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

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

Step 3

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

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

Step 4

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

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

Step 5

  • Remove 1 screw from the left side of the camera.
  • Inside the rubber door, remove the two black screws.

Remove 1 screw from the left side of the camera.

Inside the rubber door, remove the two black screws.

Step 6

  • Remove the two screws beneath the eyepiece

Remove the two screws beneath the eyepiece

Step 7

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

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

Step 8

  • 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.

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.

Step 9

  • 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 back of the camera loose.

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

Step 10

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

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

Step 11

  • 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.

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.

Step 12

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

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

Step 13

  • Pull the top cover free.

Pull the top cover free.

Step 14

  • Remove the red wire that travels across the mirror box.

Remove the red wire that travels across the mirror box.

Step 15

  • Remove the 4 screws holding the mirror box in place.

Remove the 4 screws holding the mirror box in place.

Step 16

  • Remove 3 screws to disconnect the ribbon mount assembly

Remove 3 screws to disconnect the ribbon mount assembly

Step 17

  • 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.

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.

Step 18

  • 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.

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.

Step 19

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

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

Step 20

  • Swivel the dioptric lens 90 degrees.

Swivel the dioptric lens 90 degrees.

Step 21

  • Remove pin with tweezers.

Remove pin with tweezers.

Step 22

  • Compress spring and remove spring and dioptric lens assembly

Compress spring and remove spring and dioptric lens assembly

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

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                    Jacob Jaskolka                     

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Lex - Feb 24, 2018

Reply

Thank u for the clear directives.

Really helped

For those who are intending to clean the internal prism mirrors, do note the two pieces on the top are no made of glass hence easily scratched. Best to avold wiping them.