13. Remove screw that was under ribbon cable
14. Bend back metal grounding strap as shown
so that circuit board can be removed later. ***500D:
For 500D skip this step and go to Step 14A.
"I found it easy to remove the grounding strap by removing
its mounting screw instead of bending it." UPDATE: More recently,
newer Canon 1000Ds have a cutout on the black body plastic and
the mounting screw can be easily accessed .
14A. ***500D only: Ribbon cable "C" needs
to be slid out from behind small metal clip so that the circuit
board can be removed in Step 16:
15. Disconnect white connector on edge of
circuit board with a flat head jewelers driver. This is just a
pull out type connector:
16. Remove the circuit board. To remove the
circuit board lift up on the lower left end first, past the metal
strap that was bent upward in Step 14, and then remove the circuit
board by pulling it down toward the bottom of the camera. There
is a white plastic pin at the top of the circuit board that will
slide out of a black part that has a hole for the pin. ***500D:
For 500D see Figure 16A for cable that remains connected to the
Figure 16A: ***500D
only. The circuit board will remain attached to a cable in the
upper left corner so just lay the circuit board alongside the
500D as shown below:
17. Remove two small screws for metal ground
shield and one large screw as shown. UPDATE: There is no need to remove the
metal ground shield, so as an option, you can remove the single
long screw only and skip the next step, #18. ***500D:
For 500D, skip this step (Step 17) and follow the steps HERE.
18. Remove metal ground shield by using small
flat head jewelers driver as shown to pry the shield off at all
19. Disconnect ribbon cable from small white
connector as shown. It is a slide type connector. Use a toothpick
in the ribbon cable hole to wiggle it out gently.
20. Remove two long screws and two short
screws as shown. (The
long screw at the top of the photo was a little difficult to get
to. The screwdriver I used had enough grab to remove and re-install
this screw at a slant. Some modifiers report having to drill
a small hole in
the plastic housing directly above it to get at the screw. The
hole is not a problem because the viewfinder cap when re-installed
21. The next step is to remove the CMOS imaging
chip/circuit board assembly. Be careful when removing it because
there will be an exposed filter on the back side. There will also
be three small metal shims where this
assembly mates with the camera body. The shims are used for adjusting
precise focus and there may be one or two at each mounting location.
Move the small ribbon cable behind the metal tab as labeled in
the above photo, so it does not get hung up on the metal tab when
removing the assembly. The assembly needs to clear small black
pins first to become totally free. Here is the assembly removed
(large pic). The small pic shows the assembly if you did not remove
the ground shield.
"I had to remove
rubber sealant from around the "support material frame"
lug which protrudes from underneath the sensor assembly before
I could lift it out. The screw next to the label "ribbon
cable" in step 20's Figure goes through that lug."
22. And this is the back side of the assembly:
I kept parts that I removed in
plastic Glad food containers to keep dust free. Now continue to
the next page for steps on replacing the IR Cut filter of this
CMOS imaging chip/circuit board assembly.
Next Page - Imaging