Canon PIXMA iP1500 Service Manual - Page 11

6-2. Print Head Troubleshooting Flowchart (print head operation confirmation) Connect to computer Nozzle check pattern printing See 4. SERVICE MODE for printing method. Correct? Yes No Print head cleaning See 4. SERVICE MODE for cleaning method. Nozzle check pattern printing Correct? Yes No Print head deep cleaning See 4. SERVICE MODE for cleaning method. Nozzle check pattern printing Correct? Yes No Print head deep cleaning Nozzle check pattern printing Correct? Yes No Replace ink tanks Nozzle check pattern printing Correct? Yes No Defective Normal ( 11 / 21 )