Canon MX850 Quick Start Guide - Page 122

(5) Use the { or } button to select Yes, then press the OK button. Print Head Cleaning starts. Do not perform any other operations until Print Head Cleaning finishes. This takes about 1 minute. The pattern print confirmation screen is displayed. (6) Use the { or } button to select Yes, then press the OK button. The nozzle check pattern is printed. 5 Check the print head condition with the printed nozzle check pattern, and take appropriate action. See "Examining the Nozzle Check Pattern" on page 116. Note If the problem is not resolved after performing Print Head Cleaning twice, try Print Head Deep Cleaning. See "Print Head Deep Cleaning" on page 118. Print Head Deep Cleaning If print quality does not improve by standard Print Head Cleaning, try Print Head Deep Cleaning, which is a more powerful process. Note that cleaning the Print Head causes used ink to be absorbed in the ink absorber. Print Head Deep Cleaning consumes more ink than standard Print Head Cleaning, so perform this procedure only when necessary. Note Make sure that the Inner Cover is closed. 1 Make sure that the machine is turned on, and then load a sheet of A4 or Letter- sized plain paper in the Rear Tray or Cassette. 2 Open the Paper Output Tray, and then open the Output Tray Extension. (1) Press the Open button to open the Paper Output Tray. (2) Open the Output Tray Extension. 3 Press the Feed Switch to select the paper source where you have loaded paper. 4 Start Print Head Deep Cleaning. (1) Press the Menu button. (2) Use the [ or ] button to select Maintenance/settings, then press the OK button. The Maintenance/settings screen is displayed. (3) Use the [ or ] button to select Maintenance, then press the OK button. The Maintenance screen is displayed. 118 Routine Maintenance