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Re: Paper Jam...grinding noise
The print head lock is probably not retracting. Look for the white plastic block that pokes through from the paper feed side just in front of the head. Push it in with your finger and move the head to the middle by hand. Now turn the machine on. Then turn it off using the correct method. Then turn it on once more. If it starts grinding again, you screwed the feed mechanism when tugged out the jammed paper (probably pulled it backward through the feed instead of making it go forward and out the correct exit). If this is the case, you may as well bin it. If it in warranty, you can try to get a claim for repair.
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Pl. do test as per following.
1- empty paper tray.
2- pull the toner cart. and close the door.
3- power ON the printer. Listen the sound of initial motor run,
(If smooth not grinding noise, check the toner cart OPC drum for jam. If yes check the fusser drive gear and fusser gear and assembly)
If all are ok.
4- Check the paper pick up roller shaft, (sometimes it takes a bunch of paper and jammed if you forcible pull the bunch in reverse direction the shaft may gets bend cause the grinding noise during paper pickup. in that case you have to replace the paper pickup shaft.
You may be right about the worn gear as a factor but I used to have a LJ 4 and whenever it indicated a paper jam it was always right. In some cases, the jam was a tiny scrap of paper deep inside. It took a flashlight and examination of every bit of the paper path to find it
The grinding noise is the clashing of gears. The fuser is composed of 2 rollers, a metal or ceramic with a heater inside (bulb) and a silicon roller to apply pressure. The 'hot' roller is geared and the silicon roller can be geared or free floating. There is at least 1 paper sensor in the the fuser to let the unit know whether paper is there and there when it should or should not be. Sometimes, the sensor gets slightly dislodged and can actually cause a jam. If you are hearing a gear clash, the paper is being pushed through the machine and instead of being pushed through the fuser, it stops because the fuser rollers are not turning. The rest of the machine keeps pushing, crinkling the paper. If there is crinkling, then gears that drive the fuser need to be checked. It is this gear cluster and/or the fuser that need to be replaced.
Remove any paper trays. Inspect them for wrinkled or damaged paper.
Also open the back cover of the printer if this model has one.
Open any other doors that give access to the printer's paper path and to the toner or ink cartridge.
If necessary, remove the toner or ink cartridge. Place it away from light/ sun light to avoid damaging it.
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.
If the paper does tear, try rotating the roller gears manually to free the paper. Don't force anything, though. Do this step especially if the jam message comes up repeatedly without any obvious paper jam, there may be a small tear of paper inside.
Ones the printer is free of paper Replace the toner or ink cartridge and paper trays, close any doors you opened and turn the printer back on.
If the printer paper jam message still appears, then there is still some paper in the printer. Reinspect the paper path.
see alternative if the problem is still not solved.
alternative : Load a piece of thick paper, for example photo paper and press the resume button (may be diffrent button on diffrent models) a few times to the printer picks up the paper and puts it through the machine.
Loud clacking sound, jamming in fuser ? sounds like the gear that turns the fuser are bad and not meshing together,
accordion jam is the fingers or claws that ride on the fuser roller are probably worn out ( these can be replaced usually 3-5 ).
You can buy the parts and replace them yourself if a handy person, not that difficult.
If you are not a technical person best thing to do is to show it to an expert. grinding noise means some part in the machine is running with the friction. and might brake something or scratch something. Find out persons who work on photocopiers in your area either samsung or Xerox. as this model comes with both the companies and Xerox people are generly better than samsung people.
I took mine apart from the back and put it back together and it worked. It is probably due to moving it and the bottom paper tray alignment gets out of whack. I inspected all of the gear train and didn't find any worn or missing teeth. I suspect a paper jam started it and the user turned the printer around to open the back door. Since the handles are on the printer the tray doesn't move with it which allows it to separate and possibly jam a pickup drive gear.