User Activity

After a busy printing session using input from both a desktop and a laptop, the printer door remains open.  I don't see any obstruction.  It can't be forced closed either.    Can anyone help me?
My Pixma mx 712 has recently developed a vertical line about 2 inches from the left side on the printed product from the ADF feed. i have cleaned the glass and it still occurs.  Does anyone have any suggestions?
Likes from