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Customer Support for a Phenomenon in which Error 70 or Error 80 ...sg.canon › support › noticeCanon EOS 70D Q&As: Digital Photography Reviewwww.dpreview.com › canon › slrs › questions-and-answersCanon EOS 70D Troubleshooting - iFixitwww.ifixit.com › Wiki › Canon_EOS_70D_Tro