Canon EOS Rebel T2i Dioptric Adjustment Lens Replacement

Written By: Jacob Jaskolka
  • Comments: 1
Canon EOS Rebel T2i Dioptric Adjustment Lens Replacement

Difficulty

Difficult

Steps

19

Time Required

50 minutes

Introduction

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    • Before beginning, ensure that the camera is off, and the battery is removed.

    • Pry open the rubber I/F terminal cap with your finger.

    • Remove the two M1.7x2.5mm JIS #000 screws that are underneath the I/F terminal cap.

    • Using a plastic pick, or another thin plastic prying tool, pop off the I/F terminal cover from the camera.

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    • On the left side of the camera, remove the following screw:

    • One M1.7x6.0mm JIS #000 screw

    • On the right side, remove the following screws:

    • One M1.7x5.5mm JIS #000 screw

    • One M1.7x3.5mm JIS #000 screw

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    • Remove the battery door.

    • Open the battery door to about a 35° angle.

    • Pull the battery door straight outwards.

    • Remove the following screws from the bottom of the camera:

    • One M1.7x6.0mm JIS #000 screw

    • Two M1.7x2.5mm JIS #000 screws

    • One M1.7x5.5mm JIS #000 screw

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    • Slide the viewfinder eyepiece vertically upwards.

    • Start to pull the back cover partially off of the camera.

    • Use caution when removing the back cover, there is a ribbon cable that connects the LCD screen to the main PCB board.

    • Disconnect the LCD screen ribbon cable from the main PCB board.

    • Use a plastic spudger to lift up the black locking tab.

    • Carefully pull out the ribbon cable from its connector using a pair of angled tweezers.

    • Finish pulling the back cover off of the camera body.

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    • Remove the following screws from the front of the camera:

    • Two M1.7x5.5mm JIS #000 screws

    • On the bottom of the camera, remove the following screws:

    • Three M1.7x5.5mm JIS #000 screws

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    • Slide a spudger tool towards the tripod mount, underneath the plastic cover.

    • Push the plastic cover up and over the tripod mount.

    • Pull the front cover off of the camera.

    • Electric Shock Warning: With the front cover off, the high voltage capacitor on the DC PCB board is now exposed. It is recommended that you use a capacitor discharge tool to ensure the capacitor is fully discharged before proceeding further.

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    • Remove the screws next to the viewfinder:

    • Two M1.7x2.5mm JIS #000 screws

    • One M2.0x8.9mm JIS #000 diopter screw

    • Remove the following screws from the top of the camera:

    • One M1.7x2.5mm JIS #000 screw

    • One M1.7x5.0mm Phillips #000 screw

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    • Disconnect the microphone cable from the main PCB board.

    • Position a flathead 2.5mm screwdriver between the main PCB board connector and the microphone connector.

    • Gently wiggle the flathead screwdriver back and forth until the microphone connector comes free.

    • If you do not have a flathead 2.5mm screwdriver, another similarly sized flathead screwdriver should work.

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    • Locate the ribbon cable which connects the top cover the main PCB board.

    • Use a plastic spudger tool to carefully pry off the connector.

    • Use caution when handling ribbon connectors and their connectors.

    • Take note of where this fiber optic cable connects to the main PCB board.

    • The cable will slide out of the connector when you pull the top cover off. You will need to remember to slide this cable back into the connector with a pair of tweezers when reinstalling the top cover. This cable is crucial for the function of the camera flash.

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    • Disconnect these two cables connected to the DC PCB board.

    • Use the same method as with removing the microphone cable, except with using a flathead 3.0mm screwdriver.

    • Gently wiggle the flathead screwdriver back and forth until the connectors comes free.

    • If you do not have a flathead 3.0mm screwdriver, another slightly larger flathead screwdriver should work.

    • Gently lift the top cover up and off of the camera body, being careful that the loose cables do not snag on anything.

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

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    • Remove the following screws holding the mirror box in place:

    • Four M1.7x4.5mm Phillips #000 screws

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    • Remove three JIS #000 screws to disconnect the ribbon mount assembly

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

    • Remove the following screw:

    • One M2.0x4.3mm JIS #000 screw

    • Remove the orange ribbon cable.

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    • Remove the viewfinder assembly from the camera. The screws that hold the eyepiece in place are accessible. Remove these three JIS #000 screws from the rear face of the eyepiece. Two screws are located at the bottom and one screw is located on top.

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

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    • Swivel the dioptric lens 90 degrees.

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    • Compress spring and remove spring and dioptric lens assembly

Conclusion

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

Author

Jacob Jaskolka

Member since: 30/03/15

745 Reputation

One comment

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.

Lex -