A vertical, geared moving part in the main body of the device has stopped working
And as a consequence the paper scrunches up just as it exits (or, would have exited) to the output tray. It appears the geared plastic rod below is intended to be enabling the final set of brushes to sweep the paper through the slot and out of the machine. Instead, the brushes have become a barrier against which the duplex unit jams the paper sheets, producing something not unlike a paper fan. My question is: whether anyone knows of a source for such a part? And advice on how to install it, if that's advisable (the K-M warranty is now a year old, but the store where I bought the machine has written a 'performance guarantee' contract for it.
Anyone know of a source of parts and a detailed service manual?
Many thanks in advance for any suggestions!
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How old is the printer? It sounds like the rubber rollers have gotten hard and no longer can pull the paper through the vertical as quickly as the tray rollers do. I had a similar problem with a LaserJet4 printer and I had to obtain a repair kit (available online) and replace the old parts. Hope this helped.
Paper jams can occur in 3 places: Entry, registration and exit.
If the paper isn't picking up out of the paper tray, visually inspect the pickup roller. If it looks shiny, replace it. You should also replace the separation pad as they work together. On the 4L/4P/5P/6P the pickup roller has a plastic shaft that breaks. You'll have to replace the whole pickup assembly. This requires major disassembly of the printer. Check our printer repair kits for your model printer. If you don't see it listed, email us.
If you have an HP 4/4+/5 with an optional 500 sheet feeder that's jamming, check the balance knob adjustment. Center it with a full **** of paper for proper operation.
If the paper is jamming at registration or anywhere between pickup and exit it could be a number of things. Check the paper path for torn bits of paper or label residue. On the II/III series, remove the metal registration guide plate (2 screws) and check underneath it. If the pickup rollers are moderately worn, the paper will stop just short of the registration roller. On the 4L/4P/5P/6P remove the screw holding the oblique roller assembly (Inside front of printer) and pull out and inspect the assembly and the area under it. On the HP 4/4+/5 pivot up the metal plate and check underneath it. Check the roller assembly on the left side for torn scraps of paper (a flashlight or torch is necessary).
Make sure paper cassettes are firmly seated, corner tabs aren't bent. Some trays have lifting springs that could pop out if tray has been dropped.
Check your software settings in the program you are attempting to print from. Do you have the correct paper size specified? If you have a different paper size than what is in the tray, you'll get a paper jam.
Exit jams are frequently caused by exit sensors. These sensors are typically mounted on the fuser assembly or adjacent to it. They are plastic arms that block and unblock an optical sensor. The arms can get stuck or knocked out of place when clearing paper jams. The optical sensors can also get dirt blocking the photo cell. Clean the sensor and check for free movement and proper installation of the sensor arms.
On HP II/III series exit jams are mostly caused by worn gears. The best way to troubleshoot this is to defeat the door interlock (see door interlock photo on troubleshooting page). Press down on the arm on the top right of the fuser. Initiate a test page. While holding down the arm, press one of the metal cartridge detect switches just below the door interlock. Watch the movement of the gears. You will get a 51 error because the door is open. Recycle power to get rid of error. There is an arm gear on the lower right of the fuser that can shed teeth. There is also a 14 tooth gear below the large gear on top of the fuser. You can also manually rotate the large gear and check for binding or crunching. If that happens, then replace the 14 tooth gear. On the door, there are some delivery coupler gears that mate with the fuser and drive the exit roller. Check the gears for excessive wear. Replace if necessary. If the paper gets almost all the way out and jams, replace the exit roller or the exit roller assembly. If the error occurs after fuser replacement, check and see if the connector on the left of the fuser is properly mated with the one in the printer.
On HP 4/4+/5 printers the most common cause of exit jams is the exit assembly. Order our 4/4+/5 Exit Jam Repair Kit. Exit jams in the fuser can be caused by a broken fuser drive gear or a broken gear on the fuser. Remove the fuser and check the gear inside the printer for broken teeth. Manually turn the gears on the fuser and check for smooth operation. Check the paper exit sensor arm for proper mounting and free movement.
Check to make sure the rear door is closed on the printer. Open doors can cause 13 paper jam indications.
On the 5L/6L check the registration sensor arm below the pickup roller. Also check the exit sensor arm (bottom center of the fuser). These arms frequently get stuck or dislodged clearing paper jams. On these printers, if you are experiencing frequent paper jams, order our 5L/6L Multi-Sheet/No Feed Repair Kit
please verify that the main roller that is moving the paper out while its being printed upon is moving....if its not or it moves a bit verify that the gear teething are all intact at the gear assembly end....
check to see that you don't have worn out rollers.
This happened with an old HP Laserjet 1100A of mine. I had apparently dropped a screw in the paper-out slot and it was jamming the paper on just one spot.
As you know, the entire sheet is connected, so It is most likely a similar situation in which a previous jam has left a small wad of paper under one of the rollers, and this is preventing the paper from exiting the slot. Best bet, print something and see where the paper is scrunching up. This is most likely the roller that has the paper stuck under it. Remove the toner block and blast some compressed air into the spot the jam is most likely originating and see if anything else flys out. Also, if that does not work, you might try manually rotating the rollers backwards, which will often eject the lodged paper chunk. Note- Please be careful inside the printer! Do not touch the bright green drum, or anything that dosen't look like it is rubber and rolls paper around! It is very easy to mess things up in there ;)
1. Turn the printer off and open the access cover. 2. Look for any obstructions in the paper path and remove them if necessary. (It is possible to move the carrier assembly with the power off.) 3. Turn the printer on, load some paper, and press the Form Feed button. (On the X83, press the Select button.) 4. Watch the paper as it feeds through and try to determine where the jam is occurring. 5. Check to see if all the rollers are turning.
If all the rollers are turning, there may be something in the feed path that you can't see. Go to step 6. If not, there is probably a feed motor or a gear problem and the printer may require service. 6. If the paper is jamming under the carrier assembly, you may be able to fix it using the manual feed slot. 7. Turn the printer off. 8. Take a #10 envelope and feed it through the left side of the manual feed slot until it comes right through the printer to the back of the exit rollers. 9. Move it up and down first, and then slowly move it over to the right side. If something is stuck under the black guide plate, this may work it loose.
please confirm that nothing droped inside in your printer (pins-stapler-small pieces of torn paper)-double a piece of paper roll and try to insert it while you press paper feed button to remove any object in paper path- apply light grease in gears and test your calculator.if the problem exist pass it to service center.