HP Deskjet 3840 HP Deskjet 3840 Printer series - (Windows) User's Guide - Page 67
Aligning print cartridges, Calibrating color, Automatically cleaning print cartridges
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HP Deskjet 3840 series printer 9.2 Aligning print cartridges After installing a print cartridge, align the print cartridges to ensure the best print quality. To align the print cartridges: 1. Load letter-size or A4-size plain white paper in the In tray. 2. Open the printer Toolbox. 3. Click Align the Device. 4. Click Align, and then follow the onscreen instructions. 9.3 Calibrating color Perform a color calibration only if the colors in photographs that are printed with the photo print cartridge and the tri-color print cartridge consistently look incorrect. Before performing a color calibration, align the print cartridges, and then reprint your photograph. If the color is still incorrect, then perform a color calibration. To calibrate color: 1. Load letter-size or A4-size plain white paper in the In tray. 2. Verify that a photo print cartridge and a tri-color print cartridge are installed in the printer. 3. Open the printer Toolbox. 4. Click Align the Device and then follow the onscreen instructions. 9.4 Automatically cleaning print cartridges If your printed pages are missing lines or dots, or if they contain ink streaks, the print cartridges might be low on ink or might need to be cleaned. If the print cartridges are not low on ink, follow these steps to clean the print cartridges automatically: 1. Open the printer Toolbox. 2. Click Clean the Print Cartridges. 3. Click Clean, and then follow the onscreen instructions. If your documents are still missing lines or dots after cleaning, replace the print cartridges. Caution: Clean print cartridges only when necessary. Unnecessary cleaning wastes ink and shortens the life of the cartridge. 67