Canon BJ-10sx - Manual (Page 22)

4. Secure the cable connector by snapping the two wire clips
(located on the printer) into the cable connector.
5. Connect the other end of the interface cable to the parallel port on
your computer.
Turning the Printer On and Off
To turn on the printer, press the POWER button on the
operator panel until the printer sounds a beep. The POWER
light comes on, and the printer makes several sounds as it gets
ready to print.
CAUTION: Never unplug the AC adapter when the power is
turned on. This may cause the print head to remain where it is
without returning to the home position. Once in the home
position, the print head is capped, which protects it from damage
or drying out.
To turn off the printer, press the POWER button again. Always
turn off the printer when you will not be using it.
NOTE: After turning off the printer, always wait at least four
seconds before turning it back on.