Question about HP LaserJet 2840 Printer

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Hp 4345 won't lift paper says paper jam. I open the tray close it and it works for one paper. Then it happens again.

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This error message is displayed by the printer when paper is jammed in one or more locations. In such a case, users are recommended to remove the jammed paper from the specified location. The entire paper path must be checked for any pieces of paper. To stop the message, open and close the top most cover of the printer. Lastly, verify the flags and the sensors. If the problem persists, the cause of the error message could be a broken sensor or sensor lever.

Posted on Oct 11, 2010

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2 Answers

Paper jam. How do I get the paper out. my instructions don't tell what to do. This is HP Officejet J4680cAll in One


http://h10032.www1.hp.com/ctg/Manual/c01770356.pdf


Follow the instructions on how to "To clean the plastic strip inside the automatic document feeder" This is the closest you will be able to get to getting inside the paper feeder to check for the paper jam.

Feb 28, 2011 | HP Office Equipment & Supplies

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Cartrige won't move


Instructions Things You'll Need:
  • Cup of distilled water
  • Clean wash cloth
    Fixing The Printer Cartridge
  1. Shut down the HP 6480 by pressing the "On/Off" button on the right side of the control panel. Some paper jams will clear themselves just by turning the printer off and starting it again. Wait a few minutes after the printer has shut down and then turn it on again.
  2. Remove the paper feed tray. If the printer does not clear the paper jam by itself, shut off the device again. Be sure to pull the tray out gently to avoid damaging the device.
  3. Lift up the automatic document feeder. The feeder makes up the top half of printer, and it can be opened like the hood of a car. Lift the sides of it slowly. This exposes the printer mechanism and ink cartridges. Pull the jammed paper up and out of the printer mechanism with both hands. Pull it gently to ensure you don't damage any components.

  4. After removing the paper, clean off the cylindrical, silver printer roller. Dampen a clean cloth with distilled water, and gently wipe any dirt, ink or paper off the roller. Rotate it when you're done cleaning one side, and continue rotating and cleaning until the roller is clean on all sides.
  5. Close the automatic printer feeder. After removing all paper, close the top printer feeder and shake it to ensure it's fastened. Re-attach the printer tray by lining it up with the arrow markers on both sides of the printer.
  6. Put one sheet of paper into the printer tray, and reset the HP 6480 by pressing and holding the "On/Off" button for 15 seconds. The printer should automatically restart and return to factory settings. It will run diagnostics and the printer cartridges should begin moving again as they print a test sheet.

Dec 21, 2010 | HP PSC 1350 All-In-One Thermal Printer

2 Answers

Hp laserjet 8150. i have a problem, tray 3 empty, always but have paper in tray 3


CAUSE: This error message indicates the paper present sensor flag in one of the trays does not detect paper in the tray. This could be caused by one of the following:
  • A broken sensor flag
  • The tray paper guides being set too close and restricting the paper from being pulled
  • The tray is not lifting
SOLUTION: Follow the steps below to determine the cause of a false TRAY X EMPTY message. Tray 2 empty
  1. Verify there is paper in the tray.
  2. Open the duplex unit access door just above Tray 2 on the front of the printer.
  3. Check the black-paper present flag by looking in through the duplex access door.
  4. Open and close Tray 2 and observe the tray lifting looking through the duplex unit access door.
The tray lifts but the error is still present
  1. Inspect the paper present flag on the PIU located just behind the pickup rollers. Ensure the flags are present and not damaged.
  2. Remove the tray guides from the tray and reseat them. Ensure the guides are seated correctly and are in the correct slot for the size paper in the tray. Add paper to the tray and try printing again.
  3. Try another known good tray, if available.
The tray does not lift and the error is still present
  1. Remove the tray, remove the paper in the tray, and inspect the lifting plate in the tray for damage. Ensure it will lift freely by hand.
  2. Try another known good tray if available.
Tray 3 empty
  1. Verify there is paper in the tray.
  2. Remove Tray 2.
  3. Open and close Tray 3 and verify it lifts by observing through the Tray 2 cavity.
The tray lifts but the error is still present
  1. Inspect the paper present flag on the PIU located just behind the pickup rollers. Ensure the flags are present and not damaged.
  2. Remove the tray guides from the tray and reseat them. Ensure the guides are seated correctly and are in the correct slot for the size paper in the tray. Add paper to the tray and try printing again.
  3. Try another known good tray if available.
The tray does not lift and the error is still present
  1. Remove the tray, remove the paper in the tray, and inspect the lifting plate in the tray for damage. Ensure it will lift freely by hand.
  2. Try another known good tray if available.
Tray 4 empty
  1. Verify there is paper in the tray
  2. Open Tray 4 and check for an extra **** of paper stored on the left side of the tray. This can cause the tray to stall while lifting and result in a tray empty message.
  3. Defeat the interlock in the vertical transfer unit (VTU). Open and close Tray 4 and watch the tray lift through the VTU door on the lower-right side of the printer.
    NOTE: Follow troubleshooting steps for Trays 2 and 3 when working with the 2 X 500 sheet-input tray.
The tray lifts but the error is still present
  1. Check the tray guides to ensure the guides are seated corrected and are in the correct slots for the paper size in the tray.
  2. Inspect the paper present sensor for damage.
  3. Check for any broken plastic pieces in the tray that may be a broken sensor flag.
The tray does not lift and the error is still present Defeat the VTU interlock on the right side of Tray 4. Open and close Tray 4 and observe the tray lifting.

Nov 25, 2009 | HP LaserJet 8150n Printer

1 Answer

Paper jams using nextech premium photo pape gloss finish


  1. Before you do anything else, turn the printer off and on by following these steps:
    1. Turn off the printer by pressing the Power button.
    2. If the optional HP Photosmart Internal Battery is not installed in the printer, unplug the printer power cord. Wait about 10 seconds, then plug the power cord back in.
    3. If the optional HP Photosmart Internal Battery is installed in the printer, unplug the printer power cord, if it is plugged in. Open the battery compartment cover and remove the battery. Wait about 10 seconds, then reinstall the battery. If desired, plug in the power cord.
    4. Turn on the printer. The printer checks for paper in the paper path and will automatically eject the jammed paper. Press OK to continue.
    If the error still occurs, go on to the next step.
  2. If the paper came part way through the front of the printer, gently pull the paper towards you to remove it.
  3. If the paper did not come part way through the front of the printer, try removing it from the back of the printer:
    1. Remove the paper from the In tray, then push in the catches to release the in tray. Figure 1: In tray catches c00256377.jpg
    2. Open the In tray to a horizontal position.
    3. Gently pull the jammed paper to remove it from the back of the printer.
    4. Before you lift the In tray to close it, make sure it is pushed all the way to the right on its hinges. Figure 2: Pushing the tray to the right before closing c00256378.jpg
    5. Lift the In tray up until it snaps back into paper-loading position.
  4. Open and close the pen door on the front of the printer to make sure it is securely latched. Figure 3: Opening and closing the pen door c00269435.gif
How to avoid paper jams
  • Make sure that the cartridge door on the front of the printer is securely closed.
  • If you experience paper jams while printing, try loading one sheet of photo paper at a time. Insert the paper as far as it will go into the In tray.
  • Do not add paper while the unit is printing.
  • Do not use paper that is too thin, too slick, or that stretches.
  • Do not use torn or creased paper. Paper that has been printed previously may cause jams.

Aug 04, 2009 | HP Photosmart 375 InkJet Printer

2 Answers

Two error messages persist after replacing toner cartridge.


This kind of error indicates that your toner is not properly set or there is some paper jam. so please follow the instruction and open the panel and remove the toner and check for any kind of paper piece and than refit toner properly and close the panel and than check you will definatly able to resolve the problem ok

Dec 20, 2008 | Canon imageCLASS MF4270 All-In-One Laser...

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