Canon PIXMA MP140 Series Quick Start Manual page 54

Cause
Landscape credit card-sized paper
jammed inside the machine.
50 Troubleshooting
Do not load credit card-sized paper in the landscape orientation.
Remove the paper according to the following procedure.
(1) Press the ON/OFF button to turn the machine off.
(2) Open the Scanning Unit (Printer Cover), then remove the
jammed paper.
Be careful not to touch the components inside the machine.
(3) After removing all paper, close the Scanning Unit (Printer
Cover), then turn the machine back on.
If you cannot remove the jammed paper or the paper jam error continues after
removing the paper, contact your Canon Service representative.
Action