HP OfficeJet Pro 7740 Printers - 'Paper Jam' Error

This document is for the HP OfficeJet Pro 7740 Wide Format All-in-One Printer.

During a print job, the printer stops feeding pages and a Paper Jam error displays on the printer control panel. This indicates that paper might be jammed inside the printer.

note:
Paper jams can be real or false. The printer might report a paper jam even when there is no jammed paper. The following steps apply to both real and false paper jams.

Step 1: Clear jammed paper from the printer

Paper jams can occur in multiple areas of the printer. If you cannot find the paper jam in one area, continue to the next area until the jam is located.

You need a flashlight to complete some of these steps.

Figure : Flashlight

Clear jammed paper from the input tray area

Remove any jammed paper that is accessible from the input tray area.

Pull out Tray 1.

Figure : Pulling out Tray 1
Use a flashlight to check for any paper or objects in input tray area, and then remove any paper or objects that you find. To avoid tearing any whole sheets of paper, pull the paper with both hands.

Figure : Removing jammed paper from the input tray area
Insert the input tray back into the printer.
Repeat these steps for Tray 2.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the ink cartridge access area

Remove any loose or jammed paper that is accessible from the ink cartridge access area.

Open the ink cartridge access door.

Figure : Opening the ink cartridge access door
Wait until the printer is idle and silent before you continue.
With the printer turned on, disconnect the power cord and any other cables from the rear of the printer.

warning:
You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.
Use a flashlight to check for any paper or objects in the ink cartridge access area while moving the print carriage side to side.
Use both hands to remove any paper or objects you find.

Figure : Removing jammed paper from the ink cartridge access area
Close the ink cartridge access door.

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

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the duplex area

Remove any jammed paper from the duplex area of the printer.

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

warning:
You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.
Pull out Tray 1.

Figure : Pulling out Tray 1
Push the buttons on both sides of the output tray towards you, and then pull up to remove it.

Figure : Removing the output tray
From inside the printer, grab the center of the duplex door, and then pull it towards you to open it.

Figure : Opening the duplex door
Use a flashlight to check for any paper or objects in the duplex area, and then remove any paper or objects that you find. To avoid tearing the paper, use both hands to pull out the paper.

Figure : Removing paper from the duplex area
Lift the duplex door up, and then push back to close it.

Figure : Closing the duplex door
Insert the output tray.

Figure : Inserting the output tray
Insert the input tray back into the printer.
Reconnect the power cord and any other cables to the rear of the printer, and then turn on the printer.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the rear of the printer

Clear a paper jam from the rear of the printer.

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

warning:
You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.
Turn the printer so that the rear access door faces you.
Press the two tabs inward on the rear access door, and then lower the rear access door to open it.

Figure : Opening the rear access door
Press the two buttons inward on the paper path cover, and then pull the cover out of the printer.

Figure : Removing the paper path cover
Use a flashlight to check for any paper or objects in rear of the printer, and then use both hands to remove any paper or objects you find.

Figure : Removing paper from rear of the printer
Insert the paper path cover back into the printer.
Close the rear access door.
Reconnect the power cord and any other cables to the rear of the printer, and then turn on the printer.

Try to print. If the error persists, check for jammed paper in another area of the printer.

Clear jammed paper from the ADF

Clear jammed paper from the automatic document feeder (ADF).

Lift the ADF cover.

Figure : Lifting the ADF cover
Pull out any jammed paper from the rollers, and then close the ADF cover.

Figure : Removing jammed paper from the rollers
Lift the ADF tray up, and then remove any jammed paper from under the tray.

Figure : Removing jammed paper from under the ADF tray
Lift up the scanner lid, and then remove any jammed paper from the scanner area.

Figure : Removing paper from the scanner area

If you have checked and removed any jammed paper from each printer area and the error persists, continue to the next step.

Step 2: Clean the paper feed rollers

Dust, paper fiber, and other debris might accumulate on the paper feed rollers and cause paper jams and paper feed issues. Clean the rollers inside the printer, and then try to print again.

Gather the following materials:

A clean, lint-free cotton swab
Distilled or bottled water

caution:
Do not use tap water because it might contain contaminates that can damage the printhead.

Clean the rollers from inside the ink cartridge access area

Clean the rollers inside the ink cartridge access area.

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

warning:
You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.
Open the ink cartridge access door.

Figure : Opening the ink cartridge access door
Lightly dampen a lint-free cloth with distilled water, and then squeeze any excess liquid from the cloth.
Move the carriage all the way to the right, if necessary.
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
Allow the rollers to dry completely (approximately 10 minutes).
Close the ink cartridge access door.

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

Try to print. If the error persists, clean the rollers in another area of the printer.

Clean the rollers from inside the rear of the printer

Clean the rollers inside the rear of the printer.

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

warning:
You must disconnect the power cord before reaching inside theprinter to avoid risk of injuries or electric shock.
Turn the printer so that the rear access door faces you.
Press the two tabs inward on the rear access door, and then lower the rear access door to open it.

Figure : Opening the rear access door
Press the two buttons inward on the paper path cover, and then pull the cover out of the printer.

Figure : Removing the paper path cover
Lightly dampen a clean, lint-free cloth with bottled or distilled water, and then squeeze any excess liquid from the cloth.
Press the cloth against the rollers, and then rotate them upward with your fingers. Apply a moderate amount of pressure to remove any dust or dirt buildup.

Figure : Cleaning the rollers in the rear of the printer
Repeat the cleaning steps on the paper path cover rollers.

Figure : Cleaning the paper path cover rollers
Allow the rollers to dry completely (approximately 10 minutes).
Insert the paper path cover back into the printer.
Close the rear access door.
Reconnect the power cord and any other cables to the rear of the printer, and then turn on the printer.

Try to print. If the error persists, clean the rollers in another area of the printer.

Clean the rollers in the ADF

Clean the paper feed rollers in the automatic document feeder (ADF).

Lift the cover of the ADF.

Figure : Lifting the ADF cover
Lightly dampen a clean, lint-free cloth with bottled or distilled water, and then squeeze any excess liquid from the cloth.
Press the cloth against the rollers, and then rotate them upward with your fingers. Apply a moderate amount of pressure to remove any dust or dirt buildup.

Figure : Cleaning the rollers and separator pad
Allow the rollers to dry completely (approximately 10 minutes).
Close the ADF cover tightly at both ends.

Try to print.

If you have cleaned the rollers in each printer area and the error persists, continue to the next step.

Step 3: Reset the printer

Sometimes a paper jam error persists even though there is no jammed paper (false paper jam). Reset the printer, which might clear a false paper jam error, and then try to print again.

With the printer turned on, disconnect the power cord from the printer.
Unplug the power cord from the power source.
Wait 60 seconds.
Reconnect the power cord to a wall outlet and to the printer.

note:
HP recommends plugging the printer directly into a wall outlet.

Try to print. If the error persists, continue to the next step.

Step 4: Service the printer

Service or replace your HP product if the issue persists after completing all the preceding steps.

Go to Contact HP Customer Support to schedule a product repair or replacement. If you are in Asia Pacific, you will be directed to a local service center in your area.

To confirm your warranty status, go to HP Product Warranty Check. Repair fees might apply for out-of-warranty products.

HP OfficeJet Pro 7740 Printers - 'Paper Jam' Error

Step 1: Clear jammed paper from the printer

Clear jammed paper from the input tray area

Clear jammed paper from the ink cartridge access area

Clear jammed paper from the duplex area

Clear jammed paper from the rear of the printer

Clear jammed paper from the ADF

Step 2: Clean the paper feed rollers

Clean the rollers from inside the ink cartridge access area

Clean the rollers from inside the rear of the printer

Clean the rollers in the ADF

Step 3: Reset the printer

Step 4: Service the printer

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