Canon PIXMA G620 G600 series User Manual - Page 90

Deep Print Head Cleaning If print quality does not improve by the standard cleaning of the print head, clean the print head deeply. Cleaning the print head deeply consumes more ink than the standard cleaning of the print head, so clean the print head deeply only when necessary. 1. Check that printer is turned on. 2. Press the Setup button, use the button. LCD and Operation Panel button to select Maintenance, and press the OK 3. Use button to select Deep Cleaning and press OK button. The printer starts cleaning the print head deeply. Do not perform any other operations until the printer completes the deep cleaning of the print head. This takes about 2 to 3 minutes. 4. Check the print head condition. To check the print head condition, print the nozzle check pattern. If the problem is not resolved, turn off the power and clean the print head deeply again after 24 hours. 90