Canon Digital Rebel XSi (450D) Modification

by Gary Honis

 

Page 2 - Camera Disassembly Continued

Removal of IR Cut Filter for Astrophotography

7. Carefully pry case apart starting from the bottom side of the camera:

8. Note that there is only one ribbon cable connecting the back of the camera:

9. Remove ribbon cable from its connector. Note that this ia a "hinge type" connector. Use a small flat head jeweler's driver to flip up the black part of the connector which is hinged so that it moves up and away from the ribbon cable allowing the ribbon cable to be removed: You can see a how a similar hinged connector is opened in Step 12-B below.

Here is a photo of a typical and much larger "hinged type" connector that shows how the connector is flipped up to allow removal of the ribbon cable. To install a ribbon cable, the cable would be placed into position and the hinge snapped down to hold the cable in place.

10. Remove the port cover by pulling it off. It is held on with a soft rubber strap that is hooked on the end:

11. Remove three screws as shown below:

12. In the photo below, the ribbon cable connectors are labeled "A" through "J" for reference. We will disconnect all of these ribbon cables in the next steps.

Note that ribbon cable connectors "I" and "J" are located under ribbon cables "G" and "H". A suggestion was made by Oz, that a fine point Sharpie be used to draw a line on the ribbon cables at the edge of the ribbon cable connector before removing the ribbon cables from the connectors. This would be a indicator to check that the ribbon is fully seated and squared correctly upon reassembly.

Comment by Gary: Oz's suggestion is to avoid a problem experienced by a few modifiers of the camera not powering up after modification because a ribbon cable was not fully seated in its connector.

A. This is a "slider" type of ribbon cable connector, not a "hinged" type. Insert a toothpick in the small hole in the ribbon cable and wiggle the cable gently from side to side as you apply pressure away from the connector to pull the ribbon cable out of the connector:

B. This is a hinged type connector as we opened in Step 9. Use a small flat head jeweler's driver to flip up the brown part of the connector which is hinged so that it moves up and away from the ribbon cable allowing the ribbon cable to be removed:

C. This is a "slider" type of ribbon cable connector. Insert a toothpick in the small hole in the ribbon cable and wiggle the cable gently from side to side as you apply pressure away from the connector to pull the ribbon cable out of the connector.

D. This is a hinged type connector. Use a small flat head jeweler's driver to flip up the brown part of the connector which is hinged so that it moves up and away from the ribbon cable allowing the ribbon cable to be removed.

E. This is a "pop off" (plug type) connector. Lift it off with a tooth pick or your fingernail:

F, G, H & I: These are hinged type connectors. Use a small flat head jeweler's driver to flip up the dark part of the connector which is hinged so that it moves up and away from the ribbon cable allowing the ribbon cable to be removed.

J. This is also a hinged type of ribbon cable connector. (NOTE: When I disassembled my camera, I did not know it was a hinged type and removed it as if it was a slider type with some difficulty.) Thanks to Rudolf Schweizer for learning this when he did his modification. The hinge on this connector is located differently than the other hinged type connectors. Instead of the hinge being located on the ribbon cable side, it is located on the opposite side of the connector. Use a small flat head jeweler's driver to flip up the connector's hinge so that it moves up and away from the connector allowing the ribbon cable to be removed.

All the ribbon cables "A" through "J" have now been disconnected, continue with dessassembly steps on next page.

CONTINUED Next Page - Camera Disassembly Continued


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