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 printerDeep 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, 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.If it still does not improve, go to the next step.Step6 Perform ink flush.After performing ink flush, print the nozzle check pattern and check the result.Ink flush consumes a great amount of ink. Frequent ink flush can rapidly consume ink, so perform it only when necessary.How to Perform Ink FlushIf the nozzle check pattern is not printed correctly even after performing ink flush, check the installing condition ofthe print head.Check Installation of Print HeadImportant• Performing ink flush when the remaining ink level is not enough may damage the printer.Before performing ink flush, check the remaining ink level of all colors.How to Perform Ink FlushNote• Although some air may enter the ink tube, it is not a malfunction. No problem if the nozzle check patternis printed correctly.287