Pls help me how to fix paper jam?
I've got a Brother 2070-N mo no-laser,, a LexMark X5360, a Brother MFC 495-CFW, and they have all had this problem. The laser printer and LexMark have been in the closet, too new to toss, but absolutely NO paper jams. Since it can be maddening to be told over and over "be sure and look for a paper jam" when you've already done that, and done it, and DONE it, I'll share the other common tips I've seen so you won't have to read them, too:
Paper rollers have rubber grips in various places, and they may also have little wheels called "tractors" that advance the paper, or both at different points in the paper path. They can get loose, or dried out and not very grip-py, or the tractor wheels can get loose or on the wrong settings, etc so they no longer firmly grasp and advance the paper. These will set off the alarm. Cleaning, replacing grips, or even turning rubber grips inside out can help. You'll have to fiddle with the tractors to be sure they are snug against the paper, and roll easily, etc.
Sensors can get dirty, and need cleaning, or go bad and need replacing. If so, it's a very cheap fix, sometimes--call and ask the company what the part number is (according to one repairman on FixYa). Problems with the paper tray can keep the paper from responding to normal traction, as it can when the tray is nearly empty. And everyone says to search for even the tiniest item--not always paper--that has gotten loose or fallen down into the paper path...shake upside down, jiggle, open every openable part and search, etc.
After I finish installing my 3rd new printer, I'll check some of these out. It's pretty clear that taking printers to a repair service is more expensive than replacing--provided you spend an hour researching the cost of supplies for the "inexpensive" replacement you choose. Oh, the games they play with printer ink cartridge fees! Ink for a cheap printer can be double the cost for a pricey one, but the way things are packaged and how replaced when you run out (all 3 colors in one cartridge, or separately? etc.) makes a big difference. Do the math first. I found I was buying many color cartridges becuase my color ink dried up unused and the printer wouldn't print without them--and those were replaced separately since they didn't dry out at equal rates...but buying individually was pricey. It may be worse when I have to buy all 3 together--or not.
It might also be worth keeping a nice all-in-one when the printer part goes bad, and replacing the printer function with a new, super-simple cheap printer (if they exist; most are everything-but-fax), or a good small mono-laser that does nothing but print, no color. That's what I'm going to do next time; for now I have an all-in-one (minus the broken printer function) for every phone in the house, and this new one with a printer. LOL.