Canon BJC-55 User Manual page 315

Problems and Solutions
Make sure the battery is fully charged
When you are using the printer on battery power only, you cannot turn on the printer if the
battery is low. With the battery installed in the printer, connect and use the AC adapter.
Make sure the Power Lock switch is not set in the LOCK position
If the Power Lock switch is set forward in the LOCK position, the printer will not turn on even
if you press the POWER button. Slide the Power Lock switch to the unlock position.
Troubleshooting 315