Question about HP LaserJet 4250n Printer

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Duplexer problem When attempting to duplex, the sheet goes into the duplexer but does not come out. Printer shows paper jam error in duplexer. However, when the printer is power cycled, the first sheet will successfully duplex but the next page will stick. Checked paper size settings on tray, in printer, and in PC. Everything looks fine. Tore down the duplexer. Everything looks OK there; all belts and gears in place and no obvious signs of wear. Any help will be appreciated.

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There are several thing which may cause unexpected jams in the duplex tray...,
1. first thing to do is eliminate all other possibilities by removing the netCard/Net connection Parralel connection so the machine is Stand Alone. make sure there is paper in the feed cassette 2 ( paper Tray)
press the TICK to enter menu
scroll down to diagnostic- press TICK
scroll down to paper path test - press Tick
scroll down to Source and select tray 2
scroll down to Duplex And select YES
( if the duplex option is not visible here then there is a connection/seating problem with the duplex tray)
Scroll down to copies and select 10
scroll up to print test page and press tick
the machine should now start duplexing 10 pages,
if you get the same error ( 1 page enters then jams)
it could be a dirty/snapped paper entry sensor,( looks like a little plastic match stick that protrudes into the feed path of the paper)
use a can of pressurised air to Blast any dust away from this arm and the surrounding area being careful to follow the Paper sensor Arm back to the sensor and blasting this as well-
Duplexer tray are cheaper than an engineer call out, if the fix above fails , your cheapest option may be a replacement Duplexer tray, available from most HP office equipment Stores as well as Belmonte Business Equipment.

Posted on Sep 13, 2013

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Posted on Jan 02, 2017

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SOURCE: Duplexer problem

First, the machine always prints the first page first. Make sure you have the right driver (4 plus and not 4)and check the settings in the device settings of your printer driver on the pc. Also make sure the duplex unit is for the 4 plus and not the 4.

Posted on Jun 21, 2007

  • 685 Answers

SOURCE: paper jam on hpc7280 printer noise from duplexer area NO PAPER JAM

Follow the instructions in this video. If you follow those instructions and still get the message, you may need to replace your printer or the rear door.

Posted on Jun 17, 2009

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It gives me a bad duplexer connection error, im not sure where a duplexer is located


The duplexer on this machine is mounted right on the top where the paper exits. It should have a clear paper guide on it. When duplexing,the paper comes out here, and then reenters the machine.I would try reseating the duplexer as I have had them dislodged by users sometimes when they are removing jams.

Jul 28, 2011 | HP LaserJet 4700 Printer

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JAM IN DUPLEXER CONSTANT ON DUPLEX JOBS FINE OTHERWISE.I HAVE REPLACED DUPLEXER,ENGINE POWER BOARD,DCE CONTROLER,REVERSING ASSEMBLY,FUSER UNIT. ANY IDEAS.


You've done everything I would have done and more.
How about you installing a DOA duplexer. At this point I would change it again. Is there another printer that you can swap duplexers with?
There is a paper path sensor test (letter H) and manual sensor test . I don't know if the Component test checks the duplexer, but you should be able to find out.
Is the printer still under warranty? Can you call HP or are you an HP tech and you can call 2nd level support.
Just a thought....when you run a Config sheet, does it show the duplexer?

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Paper jam


Hi,
If you are experiencing paper jam problem with your printer, please follow these steps: 1. Remove any loose sheets of paper from the input tray and the output tray. 2. Press the Power button (c01602202.gif ) to turn off the product. 3. Disconnect the power cord from the rear of the product. 4. Unplug the power cord from the wall outlet. 5. Turn the product around so that you can access the rear side. 6. Push in the button on either side of the two-sided printing accessory (duplexer), and then remove the duplexer. 7. Gently remove any jammed paper or bits of torn paper from the rollers inside the product. Use both hands to pull any whole sheets of paper to avoid tearing them. 8. If you do not see jammed paper in the rear access area, push the buttons on the latch on the rear of the duplexer, and then lower the cover. 9. Remove any jammed paper from inside the duplexer. 10. Close the duplexer cover. 11. Gently push the duplexer into the product until it snaps firmly into place. Do not press the buttons on the end of the accessory while you reattach it. 12. Reconnect the power cord to the rear of the product. 13. Plug the power cord back into the wall outlet. 14. Press the Power button (c01602202.gif ) to turn on the product.
If you need any further assistance, please comment back.

Feb 13, 2011 | HP 8500 Premier All-In-One InkJet Printer

1 Answer

I have a 18 mo old 8500 OJPro wireless that won't advance the paper, makes a clicking sound and gives a false paper jam error. I have seen a split white gear within a black clutch assembly on the left end...


Follow these steps in the order presented to resolve the paper jam. Step one: Remove any loose paper Remove any loose sheets of paper from the input tray and the output tray. CAUTION: Do not remove jammed paper at this stage. Trying to clear jammed paper from the front of the product can damage the print mechanism. Remove any loose paper Do not pull jammed paper c02073375.gif c01994705.gif Step two: Clear the jam from the rear of the product CAUTION: Never pull jammed paper from the front of the product. If you can pull it from the rear of the product or the tray, always try the rear first. Pulling paper from inside the front cover can cause mechanical damage to the product.
  1. Press the Power button (c01602202.gif ) to turn off the product.
  2. Disconnect the power cord from the rear of the product.
  3. Unplug the power cord from the wall outlet.
  4. Turn the product around so that you can access the rear side. Figure 1: The rear side of the productc01617574.gif
  5. Push in the button on either side of the two-sided printing accessory (duplexer), and then remove the duplexer. Figure 2: Remove the duplexerc02051407.gif 1 - Press the buttons on the sides of the duplexer 2 - Pull the duplexer out of product
  6. Gently remove any jammed paper or bits of torn paper from the rollers inside the product. Use both hands to pull any whole sheets of paper to avoid tearing them. Figure 3: Gently remove the jammed paperc02073376.gif CAUTION: Use a flashlight to thoroughly check the rollers and wheels for torn pieces of paper that might remain inside the product. If any torn pieces of paper remain inside the product, more jams are likely to occur. Figure 4: Remove scraps of paperc02073377.gif
  7. If you do not see jammed paper in the rear access area, push the buttons on the latch on the rear of the duplexer, and then lower the cover. Figure 5: Open the duplexerc01617577.gif 1 - Latch on rear of the duplexer 2 - Duplexer cover
  8. Remove any jammed paper from inside the duplexer.
  9. Close the duplexer cover.
  10. Gently push the duplexer into the product until it snaps firmly into place. Do not press the buttons on the end of the accessory while you reattach it. Figure 6: Reattach the duplexerc01617578.gif
  11. Reconnect the power cord to the rear of the product.
  12. Plug the power cord back into the wall outlet.
  13. Press the Power button (c01602202.gif ) to turn on the product.
Step three: Print a self-test report Follow these steps to print a self-test report. Printing a self-test report verifies if the hardware functions correctly.
  1. Load unused, plain white paper in the input tray.
  2. Press the Power button (c01602202.gif ) to turn on the product.
  3. Press the Setup button (c01726396.gif ).
  4. Press the Right Arrow (c01185072.jpg ) to select Print Report , and then press OK .
  5. Press the Right Arrow (c01185072.jpg ) to select Self-Test Report , and then press OK . The self-test report prints.

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Duplex paper jam . i thought i took out the paper that was jammed and i am still getting that message, PLUS now I cannot the top tray back.


The duplexer, which flips the paper to automatically print on the back side, slides into the back of your printer. Unplug the printer and slide the duplexer out to check it for jammed sheets. You might have pulled out a sheet or two in the main printer section and left one in the duplexer.
As for the top tray, the paper feed wheels ride on the end of a long lever that drops down to rest on the paper. It should be held up out of the way by a spring until the drawer is inserted, but sometimes the plastic nub that the spring pulls on breaks off. Lexmark sells a little kit of the spring and "bellcrank" to fix it. If your paper tray holds 500 sheets - a whole **** - you need part no. 56P1331 "Parts packet, bellcrank and spring, 500 sheet." For 250-sheet trays the part number is 56P1337. A web search for either part number will find you a seller.

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Error 13.10 paer jam in HP laser jet 5100 DTN


HI ayyasamyr:
This your problem.
13.10 PAPER JAM The event log message for a paper-delay jam in the duplexer is 13.10.
1. Check the duplexer and the rear area of the printer for obstructions or damage.
2. Check PS1701 and PS1703 in the duplexer for correct operation. Replace the
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Hope this helps

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3 Answers

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Back door broken, diverter gate broken?
I would look for something like this. did the tech clean the duplexers tires??

I would also try a different duplexer if possible-paper path sensor may be dirty or obstructed

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1 Answer

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First, the machine always prints the first page first. Make sure you have the right driver (4 plus and not 4)and check the settings in the device settings of your printer driver on the pc. Also make sure the duplex unit is for the 4 plus and not the 4.

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