Canon GX3000 Series Online Manual

Also see for GX3000 Series: Getting started Online manual

Cleaning the Print Head• From the computer•◦ For Windows:◦Clean the print head◦ For macOS:◦Clean the print headIf it still does not improve, go to the next step.Step3 Clean the print head again.After cleaning the print head again, print the nozzle check pattern and check the result.If it still does not improve, go to the next step.Step4 Clean the print head deeply.After cleaning the print head deeply, print the nozzle check pattern and check the result.• From the printer•Deep Print Head Cleaning• From the computer•◦ For Windows:◦Clean the print head deeply◦ For macOS:◦Clean the print head deeplyIf it does not improve, turn off the printer, wait for more than 24 hours without unplugging the power supply, and go to the next step.Step5 Clean the print head deeply again.After cleaning the print head deeply again, print the nozzle check pattern and check the result.For details on printing the nozzle check pattern, print head cleaning, and print head deep cleaning, see If PrintingIs Faint or Uneven.Check3 When using paper with one printable surface, check the correct printable sideof the paper.Printing on the wrong side of such paper may cause unclear prints or prints with reduced quality.When you load paper on the rear tray or rear flat tray, load paper with the printable side facing up. When youload paper in the cassette, load paper with the printable side facing down.Refer to the instruction manual supplied with the paper for detailed information on the printable side.• When copying, see also the sections below:•Check4 Is platen glass dirty?Clean the platen glass.Cleaning Platen and Document CoverCheck5 Make sure original is properly loaded on platen.When you load the original on the platen, load it with the side to be copied facing down.Loading Originals431