Canon imagePROGRAF iPF770 MFP M40 User Guide - Page 503
Cleaning the Printhead, Test Print, Nozzle Check, Head Cleaning A, Tab Selection screen
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iPF770 4 Press ▲ or ▼ to select Test Print, and then press the OK button. 5 Press ▲ or ▼ to select Nozzle Check, and then press the OK button. The printer now prints a test pattern for checking the nozzles. 6 Check the printing results. If the horizontal lines are not faint or incomplete, the nozzles are clear. Cleaning the Printhead If some sections of the horizontal lines are faint or incomplete, the nozzles for those colors are clogged. If horizontal lines are faint or incomplete, follow the steps below and check again for nozzle clogging. 1. Clean the Printhead. (See "Cleaning the Printhead.") ➔P.503 2. Print a test pattern to check the nozzles. • If you repeat these steps several times but the horizontal lines are still faint or incomplete, the Printhead may have Note reached the end of its useful life. Contact your Canon dealer for assistance. Maintenance and Consumables Printheads Cleaning the Printhead If printing is faint, cleaning the Printhead may improve results. Choose one of two Printhead cleaning modes ( Head Cleaning A or Head Cleaning B ), depending on the problem to resolve. • Head Cleaning A Use this mode if printing is faint or contains foreign substances. This method of cleaning consumes the least amount of ink. It takes about three minutes to complete. • Head Cleaning B Use this mode if no ink is ejected at all, or if Head Cleaning A does not solve the problem. It takes about three and a half minutes to complete. • Do not remove the Maintenance Cartridge or ink tanks during either Head Cleaning A or Head Cleaning B. Important Ink may leak or an error may occur. • If printing does not improve even if you execute Head Cleaning B, try repeating Head Cleaning B once or twice. If this still does not improve printing, the Printhead may have reached the end of its useful life. Contact your Canon dealer for assistance. • By default, nozzles are checked at fixed intervals. Note Configure the settings on the Control Panel menu in Nozzle Check. (See "Menu Settings.") ➔P.416 Perform cleaning as follows. 1 On the Tab Selection screen of the Control Panel, press ◀ or ▶ to select the Settings/Adj. tab ( ). 503 • If the Tab Selection screen is not displayed, press the Menu button. Note User's Guide