Canon BJC-55 User Manual page 276

Check the BJ cartridge by printing a Nozzle Check Pattern
Use the printer operation panel to print a Nozzle Check Pattern.
Printing a Nozzle Check Pattern
If the Nozzle Check Pattern does not print ...
The printer may be damaged. Call the Canon Customer Care Center.
If the Nozzle Check Pattern prints normally ...
There may be a problem in the software application, or the interface cable
could be damaged or not plugged in correctly.
Before You Call For Service
Problems and Solutions
Troubleshooting 276