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HP Color LaserJet 2820 and 2840 AiO Series Products - How to Clean the Printer

To clean the exterior

Use a soft, damp, lint-free cloth to wipe dust, smudges, and stains off of the exterior of the device.

To clean the scanner glass

Dirty glass, from fingerprints, smudges, hair, and so on, slows down performance and affects the accuracy of special features such as fit-to-page and copy.
NOTE: If streaks or other defects appear only on copies produced using the automatic document feeder (ADF), clean the scanner strip (step 3). It is not necessary to clean the scanner glass.
  1. Turn off the device, unplug the power cord from the electrical socket, and raise the lid.

  2. Clean the glass by using 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 device; these can damage the device. Do not place liquids directly on the glass. They might seep under it and damage the device.
  3. Clean the scanner strip by using a soft cloth or sponge that has been moistened with nonabrasive glass cleaner.

  4. To prevent spotting, dry the glass by using a chamois or cellulose sponge.

To clean the lid backing

Minor debris can accumulate on the white document lid backing that is located underneath the device lid.
  1. Turn off the device, unplug the power cord from the electrical socket, and raise the lid.

  2. Clean the white document lid backing by using a soft cloth or sponge that has been moistened with a mild soap and warm water. Also, clean the scanner strip next to the ADF scanner glass.

  3. Wash the backing gently to loosen debris; do not scrub the backing.

  4. Dry the backing by using a chamois or soft cloth.

    CAUTION: Do not use paper-based wipes because they might scratch the backing.
  5. If this does not clean the backing well enough, repeat the previous steps and use isopropyl alcohol to dampen the cloth or sponge, and then wipe the backing thoroughly with a damp cloth to remove any residual alcohol.

    NOTE: In certain areas of California, air pollution control regulations restrict the use of liquid Isopropyl Alcohol (IPA) as a cleaning agent. In those areas of California, please disregard the previous recommendations and use a dry, lint-free cloth. The cloth may be moistened with water if desired.

Cleaning the paper path

During the printing process, paper, toner and dust particles can accumulate inside the device. Over time, this buildup can cause print-quality problems such as toner specks or smearing. This device has a cleaning mode that can correct and prevent these types of problems.

To clean the paper path from HP Toolbox

Use HP Toolbox to clean the paper path.
NOTE: This is the recommended cleaning method. However, if there is no access to HP Toolbox, use the method in To clean the paper path from the device control panel .
  1. Make sure that the device is turned on and in the Ready state.

  2. Open HP Toolbox.

  3. On the Troubleshooting tab, click Troubleshooting Tools button on the left. Under the Cleaning Page header follow the directions to print a cleaning page.

  4. At the device, remove any print media that might be in tray 1.

  5. Remove the page that printed and load it face-down into tray 1.

  6. At the computer, click Clean .

To clean the paper path from the device control panel

If there is no access to HP Toolbox, print and use a cleaning page from the device control panel.
  1. Press MENU .

  2. Use the < (Left Arrow) or the > (Right Arrow) button to find the Service menu.

  3. Press Enter .

  4. Use the < (Left Arrow) or the > (Right Arrow) button to find Cleaning Mode.

  5. Press Enter .

  6. Load plain letter or A4 paper when prompted.

  7. Press Enter again to confirm and begin the cleaning process.

    A page feeds through the printer slowly. Discard the page when the process is completed.

To clean the ADF pickup roller assembly

If the automatic document feeder (ADF) has trouble feeding paper, clean the ADF pickup roller assembly. To clean the assembly, use the following procedure:

  1. Turn off the device and unplug the power cord.

  2. Open the automatic document feeder (ADF) cover.

  3. Press the round green button while lifting the green lever. Rotate the green lever until it stops in the open position. The pickup roller assembly should remain on the surface.

  4. Remove the assembly, and then wipe the assembly with a soft, dry cloth.

  5. Return the assembly to the same place in the ADF. The largest roller goes in back, and the gear side is away.

  6. Lower the green lever with the flat green part fitting in between the rollers. Press down on the green lever until hear a snap.

  7. To check for proper installation, lift the green lever until it remains open. The pickup roller assembly should be secured to the lever assembly and should not fall out.

  8. Make sure that both sides of the assembly are secured by the green hooks.

  9. Lower the green lever assembly and close the ADF lid.

    NOTE: If there are jams in the ADF, contact the local HP-authorized service provider.
  10. Plug the device in, and then turn the power switch to the on position.

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