Canon 7d – ERR20

After exposure, ERR20 – shooting is not possible message. This means some mechanical failure.

Official Canon advice:

“Err 20

Description: A malfunction with the mechanical mechanism has been detected.

Resolution: Turn the power off, then remove and re-install the battery. Then turn the power on again.”

Or say a prayer, whatever.

Reading out with SPT software:

2016-11-19_120133 err240  2016-11-19_120152 err216

This means, the mirror position sensor is not working. I disassembled the camera, and on the flex cable which comes from the sensor, I have found a tiny oxide dot (or what).

DPP_0001  DPP_0003  DPP_0004 

I washed it away with normal water, then I treated it with some methanol, to take away the water.

And now it works, and no error code!

2016-11-19_120205  no error


About canonrepair

Ruzsa János. Amatőr fotós, Canon DSLR váz. Amateur photographer. Canon DSLR user.
This entry was posted in 7d, oxide, service softver SPT, short circuit. Bookmark the permalink.

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