Question about Canon Rebel XT / EOS 350D Digital Camera

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Error 99 in Canon EOS 350 D

I have been experiencing sporatic error 99 messages for the past 1 week with my kit lens and my Canon EF-S, 18-55 mm, 1:3.5 - 5.6 II. This original Lens was bought along with the Camera. I have taken just over 10,000 exposures with my camera in 16 months. If I change the lens, the camera works fine. I have done this, but still the error continues : 1. Carefully clean the 8 gold color lens contact pins on the camera body lens mount with a pencil eraser. Do this while holding the camera so that any eraser dust will not fall into the camera. 2. Take out both batteries. Also remove the CF memory card. 3. With the batteries removed, turn the camera switch on for 3-5 minutes. He said that this clears the memory. 4. Turn the camera off and put the batteries and CF card back in. 5. Re-attach the lens and turn it back on. I get the Err 99 when I try to take a picture with my Canon Digital Rebel XT. It used to happen intermittantly, but lately I can't take a picture at all. I cleaned the lens contacts with an eraser, but it didn't help at all.

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Try the following diagnosis steps, in this exact order. This will isolate the cause of the issue: -
1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert only a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, the camera may be faulty and requires a service. If it does not, then: -
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.

Does the “ERR 99" message appear? If so, then the CF card is faulty. Try a different card. If the message does not appear: -
1. Turn off the camera.
2. Clean the gold contacts on the lens by GENTLY rubbing them with a pencil eraser or soft cloth. Keeping the camera face pointing down, also clean the gold contacts on the camera, being careful that you do not let any debris fall into the camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.

If the “ERR 99" message only appears when one particular lens is attached, then that lens should be examined by a service technician.
If you see the “ERR 99" with a different Canon lens attached, then the camera is faulty and should be serviced.

Posted on Mar 23, 2009

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Here's what you can try:
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This is what the people at the canon tech support say to do for error 99



read this!! :)

The guy at tech support listened and then told me that the lens contacts were dirty and to get a pencil with an eraser on the end, just a regular old pencil with a red rubber eraser. Detach the lens from the camera, hold it so that the lens’ gold contacts are pointing down and lightly erase their exposed surface, cleaning them of any hand oil that might have gotten on them.

Do the same thing with the gold contacts inside the camera body. This is a bit harder but it’s doable: just hold camera so lens opening points down so no gunk falls in. Erase lightly. I used a lens cloth and dabbed at the contacts rather than blow them so as not to blow the erasings inside the camera.

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I did some digging and found that this error is most often a lens communication error. Are you, by chance using a non-Canon lens?

Try the following:

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Hope this helps.
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Hi,
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Try the following steps.

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2. Remove the memmory card and try some clicks..(without Card)
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Why do I get Error 99 in my Canon EOS 350 D?


1. Turn off the camera.
2. Remove the lens, battery, and CF card.
3. Allow the camera to sit without power for approximately 20 minutes.
4. Insert a fully charged battery, and turn on the camera.
5. Depress the shutter button as you would to take a picture.
Does the “ERR 99′ message appear? If it does, then the camera should be
serviced. If it does not, then please proceed to the next set of steps:
1. Turn off the camera.
2. Insert the CF card.
3. Turn on the camera.
4. Format the CF card in the camera.
5. Depress the shutter button as you would to take a picture.
Does the “ERR 99′ message appear? If so, then the CF card is the most
likely source of the issue. Try using a different card.
If the message does not appear, please complete the following steps:
1. Turn off the camera.
2. Clean the lens contacts by gently rubbing them with a pencil eraser
or soft cloth. Be careful that you do not let any debris fall into the
camera body.
3. Reattach your lens.
4. Turn on the camera.
5. Depress the shutter button as you would to take a picture.
If the “ERR 99′ message only appears when one particular lens is
attached, then that lens should be examined by a service technician.
If you see the “ERR 99′ with a different Canon lens attached, then the
camera should be serviced.

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