Here are some solutions to solve error code 6A80 on Canon printers: MP520, MP540, MP620, MP550, MP560, MP600, MP610, MP630, MP800, MP810, MP830, MP970, MP980, MG5100, MP640, MP990, MG5200, MG5300, MG6100, MG6200, MG8100, MG8200 Solution 1 : Switch the printer OFF Press buttons 1 + 2 + 3 and 4 (simultaneously using four fingers) Keep pressing this four buttons for 10 seconds Release the On/Off button (number 4) (Keeping pressing the others) After a few seconds (when the printer go ON), release buttons 1, 2, 3 Solution 2 (Thanks to Dick): I discovered that the head was blocked from moving all the way to the right by a white nylon lever and discovered that there was a thin, small pad that had come loose and was blocking the mechanism to activate the head motion. One pad was about 1/2 inch by 1/2 inch and a second was a narrow 3/32 x 1/2 inch pad both about 1/16 thick. I removed these pads and the printer returned to normal. Solution 3 (thanks to anonym):