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Unboxed 7740 won’t allow me to load ink and says paper jam

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I just unboxed a 7740 and it’s stuck in “paper jam” error and won’t allow me to load printer cartridges , any advice? 

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Welcome to the HP support community.


Clean the rollers from inside the ink cartridge access area

  1. Turn off the printer, and then disconnect the power cord and any other cables.


    You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.

  2. Open the ink cartridge access door.

    Figure : Opening the ink cartridge access door

    Example of opening the ink cartridge access door
  3. Lightly dampen a lint-free cloth with distilled water, and then squeeze any excess liquid from the cloth.

  4. Move the carriage all the way to the right, if necessary.

  5. Press the cloth against the rollers inside the printer, and then rotate the rollers upwards with your fingers. Apply a moderate amount of pressure to remove any dust or dirt buildup.

    Figure : Cleaning the rollers in the ink cartridge access area

    Image: Clean the rollers in the cartridge access area
  6. Allow the rollers to dry completely (approximately 10 minutes).

  7. Close the ink cartridge access door.

    Figure : Closing the ink cartridge access door

    Image: Closing the ink cartridge access door
  8. Reconnect the power cord and any other cables to the rear of the printer, and then turn on the printer.

Perform a power reset

  1. Turn on the printer, if it is not already on.
  2. Wait until the printer is idle and silent before you continue.
  3. With the printer turned on, disconnect the power cord from the rear of the printer.
  4. Wait at least 30 seconds.
  5. Plug back the power cable straight to a wall outlet and printer without any surge protector.
  6. Turn on the printer.

Update the printer firmware

Here are the steps:- Click here


You can refer this HP document for more assistance:- Click here


I hope that helps.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.


I am an HP Employee

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