Canon Rebel XT / EOS 350D Digital Camera Logo
Posted on Jun 25, 2009
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Canon rebel xt eos

As soon as the automatic flash pops up i get a "busy" message then "error 99" message. if I go to no flash setting, it works fine. If I put a separate flash on, it works fine.

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Michael Grey

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  • Canon Master 365 Answers
  • Posted on Jun 28, 2009
Michael Grey
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Error 99 means lens communication error.
Try to clean the contacts on both sides.
and re-install lens

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  • Contributor 1 Answer
  • Posted on Jul 23, 2011
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Err99 is the 'none of the above' error code.. so all hunches above probably have nothing to do with your problem. Can't see why a memory card disables you to use the flash of your EOS?!

I have exactly the same issue. Do you also hear a very soft cranking/beeping sound when the flash pops out?

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I can help you fix the BUSY Error or Error 99 of your Canon EOS Rebel XS.

Installation of this Canon EOS Rebel XS firmware version 1.06 update will solve these problems:
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I can help you fix the BUSY Error or Error 99 of your Canon EOS Rebel XS.

Installation of this Canon EOS Rebel XS firmware version 1.06 update will solve these problems:
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See the firmware instructions and download the firmware upgrade by following these Fixya Tips :

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I can help you fix the BUSY Error or Error 99 of your Canon EOS Rebel XS / Canon EOS 1000D.

Installation of this Canon EOS Rebel XS / Canon EOS 1000D firmware version 1.06 update will solve these problems:
  1. Some cameras may exhibit a phenomenon in which the LCD monitor does not display, the shutter does not release, and the BUSY indication remains lit in the viewfinder.
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See the firmware instructions and download the firmware upgrade by following these Fixya Tips :

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  3. Follow this link to download the MAC version of the Canon EOS Rebel XS / Canon EOS 1000D firmware version 1.06 update.
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I can help you fix the BUSY Error or Error 99 of your Canon EOS Rebel XS.

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  3. Follow this link to download the MAC version of the Canon EOS Rebel XS / Canon EOS 1000D firmware version 1.06 update.
  4. Follow this link to download the Canon EOS Rebel XS / Canon EOS 1000D Instruction Manual.

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To isolate the cause of the issue, do the following: -
1. Turn off the camera.
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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.
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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: -
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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.
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The "error 99" is a general error on Canon cameras meaning "something's gone wrong and I don't know what to do about it". If you get them all the time, the camera is effectively dead and must go back to Canon for a service repair (circa £175 if I remember correctly).

If the error 99 only happens when you try to pop up the flash, but otherwise the camera can take good pictures, then yes, an external flash unit could well solve your problem. With an external flash on the hot-shoe, the internal flash is completely bypassed and the camera will never try to pop it up.

I recommend taking your camera to a shop such as Jessops and ask to try out a flash gun to be sure.
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I know what you two are talking about. I ordered a Canon EOS 300d from a site called "Keh" and I had never used one before... so I get it in the mail on time. The camera works fine for a few minutes then I get an "error 99" and can't do jack with the camera. I researched online and even called keh ... I read and heard that it has to do with the lens... so I sen't the camera back and got my money.
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