Error message mechr err-can't open unit - Onkyo DV-CP701 Multi-disc DVD Player

Usually this is cased by shutter failure or failure of the aperture unit in the lens. Try another lens and see if you get the same error message - that will tell you if the problem is in the camera body or lens

What error message? ERR 99? ERR 05?

CANON ERROR 99 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. http://www.youtube.com/watch?v=WkXyLieNUDI - - - - - VIDEO & VOICE INSTRUSTION. Error 99

ERR 01 is a lens communication error. Try cleaning the contacts on the lens and in the mirror box.

ERR 05 is a flash error. It is usually caused because the flash failed to pop up. This can be casued by something as simple as the flash hitting the brim of a 'gimme' cap or impact to the flash or most likely spillage of sticky liquid around the flash and its pivots.

The XT also is notorious for having the bottom right screw of the rear circuit board come loose and short out some function of the camera, or even blow the main fuse or damage the circuit boards.

Welcome to Fixya
Err 99 could mean several different things, such as... Memory Card, Lens or Lens contacts....

Here's what you can try:
Remove the memory card an enable "shooting with out memory card" and see if you still get the error. If it works your memory card is bad. Try another lens if you can. Clean the lens contacts with a pencil eraser (be careful not to get eraser dust in the camera body or in the lens). Worst case scenario is, Err 99 could be related to the shutter failing which would mean a trip to Canon.
Thanks

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This worked for me, from a Sony Tech.
1) When SYS ERR is displayed turn off the player by holding down the power button until tghe unit turns off. 2) Unplug the power cord. 3) Wait a minute or so and plug the player back in. This reset the player for me.

check this link for service manual


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Since the cds are stuck inside, you need to open the unit and remove them. There are four screws on the top cover. Remove them (2 on each side) and lift the cover. You should see the cds, remove them, then plug on the unit.

phone sig error mean your Phone MonsterPack(software) is demaged. you need to flash back using RSD lite to make back to normal. give me what software version you have on your cell and what bootloader you have..eg.bootloader 0A.30/0A.52..SW:R479 and etc. i these so i can upload one for you