When turned on - machine cycles to ready. On every copy, machine (stops) jams at paper transfer roller after fuser. With back off motor turns on warm up but not when copying. When I open and close the door, machine starts up (motor turns) and runs the paper through.
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Re: Sharp-275 Not a simple paper jam
This sounds like you may have a bad jam detect sensor, there is a sensor on the exit end of the fuser on the right and the flag for this is located in the middle of the exit guide on the fuser this gives us most of those types of jams.
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Most likely a common problem of a broken fuser drive gear. This is especially true if the lead edge of the paper is stopping at the fuser assembly. This is the assembly that is hot to the touch. There is a upper fuser roller drive gear that breaks on these and causes the fuser roller to stop turning. So everytime the paper gets to the rollers it stops and a jam reults. The gear is 16.00 at precisionroller.com part number M510X
Here is a picture of the gear.
Very common problem in that copier. The fuser unit has little pawls which seperate the paper from the rollers, they can become dislodged when customers remove jams. Another very common problem is the gear that turns those rollers wears down internallly, to check this make a mark on the orange fuser roller with a sharpie. See if the mark moves from it's previous spot after trying to make a copy. These rollers turn every time the machine is used or is turned on.
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.
most copiers that have lcd screens, should you show you where the paper is. sometimes it may take getting down to look under a couple of guide plates. or just roll some of the rollers to get the paper to come out. all it takes a minute piece of paper to be sitting on a sensor for it to throw the paper jam message.
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 getting a lot of jams in the fuser then there is a problem in the fuser unit !
Is it jamming like an accordion? if Yes, then the problem is w/ the little fingers in the fuser, they are worn and need to be replaced. The rollers in the fuser should be shiny and smooth if not they ca also cause jams.
What black thingy are we talking about and where? if it's the fuser rollers ( where the paper exits and gets hot then try cleaning w/reg soap & water rag then wipe off.
I had almost the same problem but the problem that I had was that after running 5 or more copies it would show a jam with no paper anywhere. And the only way to clear the jam was shutting the machine off and turing it back on.
What I found out was that the gate (flag) on the fuser unit was heating up and the gate (flag) was sticking a bit. (Plastic that close to the fuser isn't the best design)
Anyway, the only way to resolve this problem was replacing the fuser that had a new gate (flag) already installed.
You can replace the flag by itself also.
The way to see if your machine has the same problem, is if you get a jam and you open the right side door, push the black gate and see if it moves a little bit. If it was stuck then your machine is doing the same as mine was.
Hope this helps.