HP DESKJET 3820 GREEN LIGHT FLASHING, WILL NOT PRINT.

Issue

Printer cover is open

Solution

Close the cover.

Issue

Printer is out of paper

Solution

Insert appropriate media in the In tray.

Issue

Printer has difficulty picking up label media

Solution

• Change the printer's print mode setting.
• Change the printer's paper type selection.
• Use a different brand of label media.

1. Remove the paper from both paper trays.
2. Press the Power button once. Wait a moment for the paper jam to clear.
3. If printing labels, verify that a label did not become detached while passing through the printer. If the paper jam was not resolved, continue on to the next steps.
4. Remove the rear access door.
5. Remove the paper jam through the opening at the back of the printer.
6. Replace the rear access door.
7. Reload the paper into the paper In tray.
8. Print the document.

1. Remove and then reinsert the print cartridge(s) into the printer.
2. Clean the print cartridges automatically using the Clean Cartridges option in the Printer Assistant.
3. Manually clean the print cartridges and print cartridge cradles:
   • Open the printer cover and wait until the carriage moves to the center.
   • Press the Power button to turn off the printer.
   • Disconnect power cord from the back of the printer.
   • Remove the print cartridges and place them on a piece of paper with the nozzle plate facing up.
   • Lightly moisten a cotton swab with distilled water.
   • Clean the face and edges of the print cartridges with the swab. Do not touch the print cartridge ink nozzles or copper contacts.
   • Wipe the underside of the print cartridge cradle walls using a clean, moistened swab.
   • Reinsert the print cartridges.
   • Close the printer cover.
   • Connect the power cord to the back of the printer.
   • Press the Power button to turn on the printer.
4. Calibrate the print cartridges.
5. If the light is still flashing, replace the print cartridges.

1. Print a printer self-test by holding the power button down with a pencil and opening and closing the top cover four times.
2. Check the nozzle self-test pattern in the self-test print out. If one or more of the solid rectangular areas are missing, an electrical contact problem may be present.
3. Remove and then reinsert the print cartridge(s) into the printer.
4. Print the document.
5. If the problem persists, follow the steps listed above for cleaning the print cartridges and print cartridge cradle.
6. Try printing again. If the problem continues, replace the print cartridges.

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