Canon BJ-10sx - Manual (Page 43)

4. Insert a sheet of paper into the printer.
5. Press the LF/FF button. The printer positions the sheet of paper.
6. Press the ON LINE button. The printer starts to print the self test.
Stopping the Test
To stop the self test, press the ON LINE button.
To eject the sheet of paper, press ON LINE to set the printer off-line,
and then press LF/FF .
Pausing the Test
To pause the self test, press the LF/FF button. The ON LINE indicator
light blinks.
To resume press LF/FF again.
When the self test is paused, you can press ON LINE to set the printer
on-line.