Error Code U 6

What this light sequence means that the printer has a paper jam.

When a paper jam occurs, the printer stops and the operator panel's Paper Jam light and Continue button lights come on. Press and release Continue twice quickly to display the specific secondary error paper jam light sequence.

How to clear Paper Jam

?· Press Continue button twice quickly to see the secondary error code.

To get the secondary error codes

?· When the Error light (!) and Continue button lights are both on, a secondary error has occurred.

?· When the Paper Jam light (4th light) and Continue button lights are both on, a paper jam secondary error has occurred.

?· Press and release Continue button twice quickly to display the secondary error code light sequence.

Press Continue button to resume printing once all the jammed pages are cleared from the paper path.

We recommend that you clear the entire paper path when a paper jam occurs.

To clear a paper jam:

1 If you are feeding paper from a tray, remove the tray, and then remove any jams.

2 Open the front cover and remove the print cartridge assembly.

NOTE: Do not leave the print cartridge assembly exposed to direct light for an Extended period of time. Extended light exposure can cause print quality problems.

3 Remove any jams in the area behind the print cartridge assembly.

4 Lift the flap at the front of the printer and remove any jams beneath the flap.

5 Open the rear exit and remove any jams.

6 After you have cleared the jams, reinstall the print cartridge assembly, make sure all printer covers and trays are closed, and then press Continue button to resume printing.

NOTE: The printer reprints the pages that caused the paper jam.

Thank you contacting FixYa for your printer inquiry.
This error is associated with either a sheet of paper blocking the paper path or a partial piece of paper that blocks path or trips a sensor. The printer will usually throw up a error code 13.XX on the display and the XX is a number that will indicate where in the paper path this error most probably occurred. Just follow the steps for your error on the below chart.
This link will take you to the user guide which will be helpfull identifying components and providing guidelines for most of the helpful hints and things you will need to know about this printer.
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00218691/c00218691.pdf
Locate your error on the matrix below and follow the steps. Comment back if you need more help. Thank you again for contacting FixYa.
TF
HP Laserjet Error Codes 0 - 19 Message on printer Display Panel What it means. What to do. 13.XX PAPER JAM [LOCATION] Media is jammed at the specified location (and possibly at other locations). If the message persists after all jams have been cleared, a sensor or sensor lever might be stuck or broken. For all jam messages, do the following: 1. Remove jammed print media from the specified location. Check the entire paper path for other pieces of media in the path. 2. Open and close the top cover to clear the message. 3. Check sensors and flags in the paper path for proper operation. 3.0 PAPER JAM [LOCATION] A non-specific paper jam occurred. 1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation. 13.1 PAPER JAM OPEN INPUT TRAYS Paper-delay jam at paperfeed area. 1. Ensure that paper trays are loaded and adjusted properly so media can feed from the tray. It might be necessary to reduce the stack height of media in the tray. 2. Check the input area for obstructions such as media in the path. Also check to see if the registration assembly damaged or unseated. 3. Replace any defective sensors or flags. 4. Verify the media meets the specifications. 5. Check the pickup feed and separation rollers for unusual wear. Replace as needed. 6. Rotate the media in the input tray by 180° and/or turn it over On NX engines this is most likely the fuser flag or the ACPM. The ACPM has a photosensor hard-wired to the back of it. 13.10 PAPER JAM CHECK DUPLEXER Jam at duplexer. 1. Check the duplexer and the rear area of the printer for obstructions or damage. 2. Check the duplexer for proper operation. Replace the duplexer if a sensor is defective. On a 5si, 8000, or 8100 series laserjet a Duplex Jam can be caused by a tray 2 and 3 feed assembly failure. 13.14 For Laserjet 5si. This error is caused by a defective paper control PCA Replace paper control PCA. 13.2 PAPER JAM OPEN INPUT TRAYS Paper-stopped jam at paper-feed area. 1. Check the input area for obstructions such as paper in the path. Also check to see if the registration assembly is damaged or if the transfer roller is out of place. 2. Replace any defective sensors or flags. 3. Ensure the media does not exceed the maximum length. 4. If multiple sheets are feeding, it might be necessary to fan the media and reduce the stack height. Also, replace separation pad. 5. Verify that the fuser is properly installed. On NX engines this is an input jam. 13.20 PAPER JAM CHECK REAR DOOR Media stopped in the paper path during power on or when the top door was closed. 1. Remove all media in the paper path, and then open and close the top cover. 2. If the message persists after all media is removed: Check if media is jammed in the prefeed area. Replace any defective sensors or flags 13.21 DOOR OPEN JAM The top cover was open while printing. 1. Clear the jam and close the top door. 2. If the message persists, check the top door switch for proper operation. 13.5 PAPER JAM CHECK REAR DOOR Paper-delay jam at fuser. 1. Check the transfer roller and small media belt to ensure they are operating and can feed print media. 2. Check the paper path for obstructions at the transfer roller, toner cartridge, paper feed assembly, and fuser. 3. Replace any defective sensors or flags. 4. Turn the media stack over and/ or rotate it by 180° in the input tray. If still persists - replace fuser, then DC controller. 13.6 PAPER JAM CHECK REAR DOOR Paper-stopped jam at fuser. 1. Check the paper path for obstructions at the fuser and output/delivery area. 3. Replace any defective sensors or flags. 13.99 PAPER JAM [LOCATION] A non-specific paper jam occurred. 1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation

paper jam on hp laserjet

If message in display panel reads [13.XX PAPER JAM [LOCATION]]Media is jammed at the specified location (and possibly at other locations). If the message persists after all jams have been cleared, a sensor or sensor lever might be stuck or broken.
Soln.
For all jam messages, do the following: 1. Remove jammed print media from the specified location. Check the entire paper path for other pieces of media in the path. 2. Open and close the top cover to clear the message. 3. Check sensors and flags in the paper path for proper operation.

For message 3.0 PAPER JAM [LOCATION]
means A non-specific paper jam occurred.
Soln
1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation.

For more help check yhis site

http://www.printertechs.com/tech/error-codes/error-codes-0-19.php

Hp printer paper jam 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.

1. Step 1
Turn the printer off and on to see if it can automatically clear some or all of the jam. Many printers provide an error-code listing on the front panel display for the area where the jam occurred. If your printer shows an error code, be sure and check the printer manual to see if that identifies the area of the printer where the jam occurred.
2. Step 2
Turn off the printer.
3. Step 3
Remove any paper trays. Inspect them for wrinkled or damaged paper.
4. Step 4
Open any other doors that give access to the printer's paper path and to the toner or ink cartridge.
5. Step 5
If necessary, remove the toner or ink cartridge. Place it in a bag or away from light to avoid damaging it.
6. Step 6

jQuery(document).ready(function(){ jQuery('#jsArticleStep6 span.image a:first').attr('href','http://i.ehow.co.uk/images/a00/3f/31/clear-printer-paper-1.6-800X800.jpg'); }); If you find a piece of jammed paper, remove it by holding it with both hands and pulling firmly. The goal is to keep the paper from tearing. If several pieces are jammed together, try pulling out the middle piece first to loosen the jam.
7. Step 7

jQuery(document).ready(function(){ jQuery('#jsArticleStep7 span.image a:first').attr('href','http://i.ehow.co.uk/images/a00/3f/31/clear-printer-paper-1.7-800X800.jpg'); }); If the paper does tear, try rotating the roller gears manually to free the paper . Don't force anything, though.
8. Step 8
Replace the toner or ink cartridge and paper trays, close any doors you opened and turn the printer back on.
9. Step 9
If the printer paper jam message still appears, then there is still some paper in the printer. Reinspect the paper path.

1. Turn the printer off and on to see if it can automatically clear some or all of the jam. Many printers provide an error-code listing on the front panel display for the area where the jam occurred. If your printer shows an error code, be sure and check the printer manual to see if that identifies the area of the printer where the jam occurred.
   
2. Step 2 Turn off the printer.
   
3. Step 3 Remove any paper trays. Inspect them for wrinkled or damaged paper.
   
4. Step 4 Open any other doors that give access to the printer's paper path and to the toner or ink cartridge.
   
5. Step 5 If necessary, remove the toner or ink cartridge. Place it in a bag or away from light to avoid damaging it.
   
6. Step 6 If you find a piece of jammed paper, remove it by holding it with both hands and pulling firmly (see A). The goal is to keep the paper from tearing. If several pieces are jammed together, try pulling out the middle piece first to loosen the jam.
   
7. Step 7 If the paper does tear, try rotating the roller gears manually to free the paper (see B). Don't force anything, though.
   
8. Step 8 Replace the toner or ink cartridge and paper trays, close any doors you opened and turn the printer back on.
   
9. Step 9 If the printer paper jam message still appears, then there is still some paper in the printer. Reinspect the paper path.
   

Step 1
Turn the printer off and on to see if it can automatically clear
some or all of the jam.Many printers provide an error-code listing
on the front panel display for the area where the jam occurred.If
your printer shows an error code, be sure and check the printer
manual to see if that identifies the area of the printer where the
jam occurred.
Step 2
Turn off the printer.
Step 3
Remove any paper trays. Inspect them for wrinkled or damaged paper.
Step 4
Open any other doors that give access to the printer's paper path
and to the toner or ink cartridge.
Step 5
If necessary,remove the toner or ink cartridge.Place it in a bag
or away from light to avoid damaging it.
Step 6
If you find a piece of jammed paper,remove it by holding it with
both hands and pulling firmly.If several pieces are jammed together
try pulling out the middle piece first to loosen the jam.
Step 7
If the paper does tear,try rotating the roller gears manually to
free the paper.
Step 8
Replace the toner or ink cartridge and paper trays,close any doors
you opened and turn the printer back on.
Step 8
If the printer paper jam message still appears,then there is still
some paper in the printer.Reinspect the paper path.

E2-3 is paper jam at tray 3 check paper path as paper exits this tray.
-Carl, please let me know if this helps.

There is an easy fix for Lexmark E232 paper jams at the beginning of the paper path. This fix only works when the problem is that the paper starts to feed, but does not quite make it out of the paper tray.

The problem is the pickup paper rollers. If you remove the paper tray and press down on the paper indicator (the red lever to the left of the paper tray) you can see the twin rollers attached to a spring loaded armature.

Chances are these rollers are worn and are very smooth to the touch. This slick smooth surface does not have enough friction to push the paper up to the next roller.

To fix this, remove both rollers, they slide off easily. Then simply turn both rollers inside out and replace them on the armature. Notice how much "stickier" they feel now? Chances are your paper jam problems are over, until the rollers wear out again.

At that point you will have to replace them.