Canon PIXMA MP620 User Manual - Page 90

When Printing Becomes Faint or Colors Are Incorrect Page 90 of 815 pages Advanced Guide Troubleshooting Contents > Routine Maintenance > When Printing Becomes Faint or Colors Are Incorrect When Printing Becomes Faint or Colors Are Incorrect If print results are blurred or colors are not printed correctly, the pint head nozzles are probably clogged. Follow the procedure below to print the nozzle check pattern, check the print head nozzle condition, then clean the Print Head. If printed ruled lines are misaligned or print results are otherwise unsatisfactory, aligning the Print Head may improve print quality. Caution Do not rinse or wipe the Print Head and ink tanks. This can cause trouble with the Print Head and ink tanks. Note Before performing maintenance Open the Scanning Unit (Cover) and make sure that all lamps on the ink tanks are lit red. If not, see Checking the Ink Status and take an appropriate action. Increasing the print quality in the printer driver settings may improve the print result. For details, refer to the on-screen manual: Advanced Guide. When the Print Results Are Blurred or Uneven: Step 1 See Printing the Nozzle Check Pattern. See Examining the Nozzle Check Pattern. If the pattern is missing: Step 2 See Cleaning the Print Head. If the problem is not resolved after cleaning the Print Head twice: After cleaning the Print Head, print and examine the nozzle check pattern. Step 3 See Cleaning the Print Head Deeply. Note If you have performed the procedure until step 3 and the problem has not been resolved, turn off the power and clean the Print Head deeply again after 24 hours. If the problem is still not resolved, the Print Head may be damaged. Contact your Canon service representative. When the Print Results Are Not Even such as the Ruled Lines Are Misaligned: See Aligning the Print Head. Note You can also perform the maintenance operations from your computer. For details, refer to the on-screen manual: Advanced Guide.