HP Color LaserJet Pro MFP 4301-4303dw User Guide - Page 130
Check the scanner glass for dirt and smudges, Check the paper type setting on the control panel
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If the problem still exists, try these additional solutions. If they do not fix the problem, see "Improve print quality" for further solutions. Check the scanner glass for dirt and smudges Over time, specks of debris might collect on the scanner glass and white plastic backing, which can affect performance. Use the following procedure to clean the scanner. 1. Press the Power button to turn off the printer, and then disconnect the power cable from the electrical outlet. 2. Open the scanner lid. 3. Clean the scanner glass and the white plastic backing underneath the scanner lid with a soft cloth or sponge that has been moistened with nonabrasive glass cleaner. CAUTION: Do not use abrasives, acetone, benzene, ammonia, ethyl alcohol, or carbon tetrachloride on any part of the printer; these can damage the printer. Do not place liquids directly on the glass or platen. They might seep and damage the printer. 4. Dry the glass and white plastic parts with a chamois or a cellulose sponge to prevent spotting. 5. Connect the power cable to an outlet, and then press the Power button to turn on the printer. Check the paper type setting on the control panel Check the paper type setting on the printer control panel, and change the setting as needed. 1. Open and close the paper tray. 2. Follow the control panel prompts to confirm or modify the paper type and size settings for the tray. 3. Make sure the paper loaded meets specifications. 4. To check the paper size and type settings for each tray (and modify, if needed), follow these steps: a. From the Home screen on the printer control panel, touch the Menu icon, and then touch Paper. b. Touch Paper Source. c. Touch the tray name (Tray 1 or Tray 2) to view the paper size and type settings for that tray. To change the settings, touch Modify, then touch the paper size and/or type from the list of available options. d. Touch Done to save the settings. 5. Make sure the driver settings match the control panel settings. NOTE: The print driver settings will override any control panel settings. Check the image adjustment settings To improve copy quality, adjust the image settings using the printer control panel. 1. At the printer control panel, touch Copy. Check the scanner glass for dirt and smudges 119