Question about HP LaserJet 4000n Printer

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Hp 4000 roller replacement

I can't figure out how to unlock and pull off the old rollers. Help please.

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  • Gopal Ramraj May 11, 2010

    There are a few rollers in this printer. Could you pls specify which one you want to remove?

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Just to clarify, tray one is the flip-down "multi purpose" tray.
Tray 2 and 3 are the "drawers". I assume you removed the round rollers, called the sep rollers. One of them is in the tray, and the other one is in the machine, directly above the one in the tray when the tray is in the closed position. Hope you did not miss that one.

Try this....directly behind the roller (on the same metal shaft) in the trays (drawers) is a little barrell shaped gizmo called the torque limiter. It is grey and black.

Pull off your seperation roller (in the tray) then pull off this little torque limiter right behind it. Now replace the roller (without the torque limiter) only to the "detant" position, (dead center middle) you will feel a slight click. as the roller sets into its "locking" groove. Now the roller is where it was, but there is no torque limiter behind it.

Note that without the torque limiter, there is no "groaning" noise. I know exactly what you are talking about when you say "groaning".

Now try to test. Does it still fail to pick up paper? If it picks up OK, all you need is a little torque limiter. It will work without this torque limiter, but not for long, this is just a test.

Make SURE your paper is all the way to the front of the tray, that the block behind the paper is in the LETTTER SIZE position. If it is NOT all the way to the front and under the metal clips at the front left and right of the tray, you wont pick up any paper at all cause your rollers would just be spinning on air, no paper for them to pick up. This happen FREQUENTLY because the paper backing block in the rear of the tray moves if you slam the drawer shut with too much force.

OK. After you have done this, if you still cant pick up the paper, try this. Try to print something from one of the trays. Look in the BACK of the printer into the drawer cavity. WHen you print, you will see 4 "d" shaped rollers rotate and come into contact with the stacked paper. If you do not see these rotating, you need a paper feed assembly.

You cannot do that one unless you know how. But should not be expensive to fix, less than $100. Takes a pro 30 minutes.

Posted on Mar 14, 2009

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Sorry, I forgot I posted this. I figured out how to get the rollers off and back on. The problem now is that I replaced the smaller rollers but it is still failing to pick up the paper. It worked well for about 3 days and is back to the same paper jam error, minus the groaning. Any ideas? These would be the intake rollers on trays 1 and 2.

Posted on Nov 24, 2008

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How to replace pickup rollers


This should help. Good luck !

Cassette (Tray 2) paper pickup and feed rollers

To remove the paper pickup and feed rollers

1 Remove the cassette.

2 Locate the two rollers on the bottom of the paper pickup unit (above the cassette). The pickup

roller is the smaller roller, and the feed roller is the larger roller.

3 Pinch the tab on the end of the cassette pickup roller (callout 1), and pull the roller out.

4 Pinch the tab on the end of the cassette feed roller (callout 2), and pull the roller out.

Figure 6-24 Removing the cassette pickup and feed rollers

Note Always replace the cassette pickup roller and the cassette feed rollers at the same time. Also replace
the separation roller (located in the paper cassette) when replacing these rollers

Aug 14, 2014 | HP Color LaserJet 4600n Printer

Tip

How to troubleshoot paper jam problem in printers?


Most common reason are as follows:-- Among the most common problems with any make of printer are paper jams. A printer will jam for any number of reasons: It’s dirty, the wrong paper type is being used, or the rollers on the printer that feed the paper through its pathway are worn down. While cleaning the printer periodically and using the correct paper type are easy fixes, roller replacement can be a difficult job depending on the model of HP printer. For some HP printers, the rollers are easily accessible, but you'll need to completely tear down other models to remove the rollers. Regardless of the cause, when removing a paper jam, always pull the paper in the direction of the paper path, because pulling it backwards can severely damage the printer.

Certain HP printers are more susceptible to paper jams than others. In my experience, any printer that holds the paper vertically and then pulls it down through the printer invariably ends up having paper jam problems. These models aren't designed for heavy use, but many organizations make use of them on individual systems and should be aware of this flaw. In addition, some people have trouble with the newer HP 4000 series printers' paper pickup rollers—which is odd, because the older 4000 and 5000 series HP printers are considered rock solid and don't seem to have any trouble with their pickup rollers.
This will help.good luck.

on Mar 05, 2010 | Office Equipment & Supplies

1 Answer

Bottom tray is not pulling paper?


Due to old age pick up roller might be warn out.. replace the tray2 pick up roller P.No RB2-2891
Browse the link and see how to replace the pickup roller..http://printertechs.com/tech/mkinst/mk-2100-3tray2puroller.php

Oct 28, 2011 | HP LaserJet 2100 Printer

2 Answers

Paper jamed in front roller where paper is taken from


It sounds like your paper pickup roller is worn down and can't grip the paper to pick it up. This roller is located on the bottom of the printer. Pull the paper tray all the way out and turn the printer over and you can see it as seen in the attached picture.
1_19_2012_3_46_46_pm.gif
This roller comes in a kit along with the separation pad and the charge roller. When you replace one its best to replace them all. The roller kit is available here:

http://www.ccl-la.com/catalog/product_info.php?cPath=24_41_42&products_id=71

I hope this helps, if so please rate my solution.

BuddyMc

Oct 17, 2009 | HP LaserJet 1320n Printer

1 Answer

Hp laser 4000 keeps coming up w/ 41.5 error


41.5 is a paper feed error, take out the paper tray and clean the rubber roller above where the paper goes with a cloth just damp with water. Dirt on that roller will stop it from picking up the paper.

Jul 09, 2009 | HP LaserJet 4000n Printer

2 Answers

Got a new part. don't know how to install it


I assume you either have recieved the separation pad or the paperpick roller. Here are instructions on how to replace both.

  1. Use the power switch to turn the product off and then unplug the power cord. Figure 1: Unplugging the power cord c00062340.gif
  2. Open the print-cartridge door, and remove the print cartridge. CAUTION: To prevent damage, do not expose the print cartridge to light. Cover the print cartridge or place it in a black plastic bag, if necessary. Also, do not touch the black-sponge transfer roller inside the product. Touching the transfer roller can damage the product.
  3. Locate the pickup roller. Figure 2: Removing the print cartridge, and locating roller c00062341.gif
  4. Gently release the small, white tabs on each side of the pickup roller by pushing them away from the roller, and then rotate the pickup roller toward the front. CAUTION: Use gentle pressure to release the small white tabs to avoid breaking them. Figure 3: Releasing the tabs c00062342.gif
  5. Gently pull the pickup roller up and out. Figure 4: Removing pickup roller c00062343.gif
  6. Perform one of the two following options:
    • Cleaning the pickup roller:
      1. Dampen a lint-free cloth with isopropyl alcohol, and scrub the roller.
      2. Using a dry lint free cloth, wipe the pickup roller to remove loosened dirt. Figure 5: Wiping the pickup roller c00062344.gif
    • Removing the new pickup roller from its packaging.
  7. Position the cleaned or replacement pickup roller in the slots on the pickup roller frame. NOTE: Circular and rectangular pegs on each side prevent incorrectly positioning the pickup roller. Figure 6: Positioning pickup roller c00062345.gif
  8. Rotate the top of the pickup roller into position until the white tabs on each side of the roller snap into place. NOTE: Touching the transfer roller can damage the product. Figure 7: Reinstalling the pickup roller c00062346.gif
  9. Reinstall the print cartridge and close the print-cartridge door.
  10. Plug the product in, and then use the power switch to turn on the product. Figure 8: Plugging the power cord in c00062347.gif
  11. Use the power switch to turn the product off and unplug the power cord. Figure 1: Turning off power and remove power cord c00062407.gif
  12. At the back of the product, unscrew the two screws that fasten the separation pad and frame to the product. Figure 2: Unscrewing the separation pad c00062408.gif
  13. Remove the separation pad and frame. Figure 3: Removing the separation pad c00062409.gif
  14. Perform one of the following two options:
    • To clean the separation pad: Dampen a lint-free cloth with isopropyl alcohol, and scrub the separation pad.
    • To replace the separation pad: Remove the new separation pad from its packaging
  15. Insert either the cleaned or replacement separation pad and frame and fasten it to the product with the two screws. Figure 4: Fastening the separation pad c00062410.gif
  16. Plug the product in, and then use the power switch to turn on the product. Figure 5: Turning the product on c00062411.gif

Nov 17, 2008 | HP LaserJet 3015 All-In-One Printer

2 Answers

Printing problem with HP Laserjet P2015 printer


This can be an issue with one of the faulty sensor across the printer.
Please check if you are able to print from tray 1, e.g. a configuration page.
A config page can be printed by holding the Green Button and releasing it as soon as the Triangle light comes on. This would take approx 5 secs.
If the printer is able to print from tray 1, then it could be an issue with the tray 2 pickup sensor.
Check if the tray 2 pickup sensor ( a black plastic piece to the right of the tray 2 pickup roller) is moving freely (front and back), also check if tray 2 pickup roller is not able to rotate completely.

If the tray 2 sensor is not moving freely and of the pickup roller is rotating completely, then reseat the pickup roller.

Normal use with good media causes wear resulting in the need to periodically clean or replace the pickup roller. Additionally, the use of poor media might require more frequent replacement of the pickup roller. Replacing the pickup roller Complete the following to replace the pickup roller:

CAUTION: Failure to complete this procedure might damage the printer. Unplug the power cord from the printer, and allow the printer to cool.

Figure 1: Unplugging the power cord
mma01_13245_0
2. Open the print cartridge door, and remove the print cartridge.

Figure 2: Removing the print cartridge
mma01_13246_0
3. Remove the main input tray (Tray 2).

Figure 3: Removing the main input tray (tray 2)


mma01_13247_0
4. Open the front automatic two-sided path door (HP LaserJet 1320 series printer only).

Figure 4: Opening automatic two-sided path door


mma01_13248_0




5.Place the printer on the work surface with the front of the printer facing up.

Figure 5: Placement of printer


mma01_13249_0

6. Pull the white tabs outward, and rotate the tabs up.
Figure 6: White tabs
mma01_13250_0

7. Slide the right tab to the right, and leave the tab in this position throughout the procedure.
Figure 7: Right tab movement
mma01_13251_0


8. Slide the pickup roller assembly to the right, and remove the left end cap.

Figure 8: Pickup roller assembly movement



mma01_13252_0




9. Remove the pickup roller.


Figure 9: Pickup roller

mma01_13253_0



10. Insert the left side of the new pickup roller into the left slot (1), and insert the right side (with notches in the shaft) into the right slot (2).

mma01_13254_0

11. Rotate the shaft until the notches engage and the shaft clicks into place. 12.Place the end cap over the shaft on the left side, push the end cap to the right, and rotate the tab downward into position.



Figure 11: Pickup roller end cap


mma01_13255_0

13.Push the right tab to the left, and rotate the tab downward into position. 14.Place the printer on the work surface with the top of the printer facing up. 15.Close the front automatic two-sided path door.


Figure 12: Closed automatic two-sided path door
mma01_13256_0
16.Reinstall the print cartridge, and close the print cartridge door.

Figure 13: Print cartridge
mma01_13257_0

17.Plug the printer in to turn it back on.

Figure 14: Power cord in

mma01_13258_0

Cleaning the pickup roller

Perform the following to clean the pickup roller.

1.Remove the pickup roller as described in steps 1 through 9 of Replacing the pickup roller above.

2. Dab a lint-free cloth in water, and scrub the roller.

mma01_13259_0
Figure 15: Scrubbing the roller




3. Using a dry, lint-free cloth, wipe the pickup roller to remove loosened dirt. Figure 16: Wiping the pickup roller
mma01_13260_0


4. Allow the pickup roller to dry completely before you reinstall it in the printer (see steps 10 through 17 of Section with a task ).

mma01_13261_0
Figure 17: Reinstalling the pickup roller

Oct 27, 2008 | HP LaserJet P2015dn Printer

2 Answers

I have a HP Laser Jet 4000N sitting here in my office that makes a noise like the gears need oiled or some ****. Happen to know what I could use to help get them doing? When pulling a page from Tray 2; the...


This happens when the rubber on the roller is worn or has accumulated paper dust on it. The rubber is of a blue or grey color. Usually you can clean the gear with cotton swab and alcohol.
Also, there is a roller in the paper tray and a rubber pad that can be cleaned with alcohol.
If it is badly worn, you can order a replacement. There is a maintenance kit available which contains a fuser,transfer gear and up to six rollers. I keep one kit handy to keep my HP in top form.

Good luck,
Joe

Please remember to rate Techs who assist you for free :)

Oct 08, 2008 | HP Office Equipment & Supplies

1 Answer

Could you please tell me how to release paper jammed in a hp photosmart c3175 ALL IN ONE printer scanner copier,if I pull the paper it just tears away. Thank You . RAY WINCH. EMAIL...


Clearing a paper jam from the rear door Follow the steps below to clear a paper jam through the rear door.
  1. Press in the tab on the left side of the rear door to release the door. Remove the door by pulling it away from the unit. Figure 1: Removing the rear door c00652942.gif
  2. Gently pull the paper out of the rollers. CAUTION: If the paper tears when you are removing it from the rollers, check the rollers and wheels for torn pieces of paper that might be remaining inside the device. If you do not remove all of the pieces of paper from the unit, more paper jams are likely to occur.
  3. Replace the rear door. Gently push the door forward until it snaps into place.
  4. Press Cancel to continue the current job.
Clearing a paper jam from the front door
  1. If necessary, pull the input tray down to open it. Then, lower the print cartridge door. Figure 2: Lowering the print cartridge door c00652943.gif
  2. Gently pull the paper out of the rollers. CAUTION: If the paper tears when you are removing it from the rollers, check the rollers and wheels for torn pieces of paper that might be remaining inside the device. If you do not remove all the pieces of paper from the unit, more paper jams are likely to occur.
  3. Close the print cartridge door. Figure 3: Closing the print cartridge door c00652944.gif
  4. Press Start Copy Black or Start Copy Color to continue the current job.

Aug 06, 2008 | HP Office Equipment & Supplies

3 Answers

Rollers are leaving black smudges on my checks


Are you positive that this is a 'roller' problem.  Black smudges usually indicate a drum problem (your toner cartridge).  If you pull it out, you'll see a flap that should move back and forth.  If you move that flap, you'll see a shiny cylendar.  That's the drum.  See if you can see any marks on it (don't touch it with your hands.) 

The problem is, it's hard to tell whether or not it's the drum just by looking.  Your best bet is to see if replacing the cartridge takes care of the problem.

Oct 26, 2007 | HP LaserJet 1012 Printer

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