Question about Samsung SCX 4521F All-In-One Laser Printer
My Samsung SCX-4521 boots up and always flashes this message. I've checked the paper exit area and can't see any thing that is jammed. I've looked both in the front and the back. Could it be that a senser is malfunctioning? Any advice is appreciated.
I had this problem too. For me the answer turned out to be the paper sensor in the back part of the machine, behind the little back door just under the top part of the machine. This sensor hangs down from a thin rod that runs across the width of the machine, and is held in place by a small spring that encircles the same rod that supports the finger. The finger had apparently gotten moved so the spring was dislodged from its proper place. I was able to rotate it around the rod with my finger & get the spring moved back to where it should be. This seems to have cleared the problem--I'm keeping my fingers crossed.
Posted on Feb 04, 2008
I had Paper Jam 2 Check Inside and I fixed it like this:
ATTENTION!:This brought me to Jam 1 or Insert Toner problem!!!
1.Unplug all cables (USB and power)
2.Turn around the printer
3.In the back there should be a small door that on my printer (SCX-4300) flips upside.
4.Look for any jammed paper.
5.Pull out the jammed paper.
Now I don't know how to fix Jam 1 but i'll try.
Posted on Jun 16, 2010
I just fixed my sensor at the back. Thanks for the tips!
Unplug everything from the back and then remove the four screws from the back panel. Pull the panel out but watch that the on/off switch doesn't hang the cover up.
Once off, I removed the screw from the mount holding the right end of the sensor stick while holding the mount in place with my finger.
When the screw is out, lift the mount up and carefully slide it off of the stick. Carefully rotate the spring, topside away until the left side of the spring catches the sensor piece. Now rotate the other end of the spring once more around the stick and while holding it at the top of the stick (12 o'clock) slide the mount back on. With the mount in place, release the spring and it will come to rest on the mount.
Refasten the mount and check for light tension on the sensor. If it pushes forward when you release it, you're good to go. Refasten the back panel, attach all wires and enjoy.
(I still struggle with the paper feed from Solution #5.)
Posted on Apr 30, 2010
Please check the delivery sensor it is displace or broken lever
Posted on Sep 05, 2009
Check fuser sensor flag may it broken.
Posted on Jun 26, 2013
I was getting a paper jam 1 error with no paper jam, but just a 1/4 paper feed. The spring was is place. What seemed to fix it was taking the paper out and cleaning, that area, even though it was very clean looking. Maybe I also moved something. (Of course take the cartridge out)
Posted on Dec 16, 2009
Mine was doing the same thing. there is a black rubber drum about the size of a film canister in the center, mine was worn out. I removed it and turned the rubber so that a new part would contact the paper when it fed it in. Works fine now
Posted on Aug 14, 2009
How do you get to that paper sensor / spring thing? Do you have to take the back cover off?
Posted on Jan 15, 2010
Factory reset it
Posted on Sep 03, 2015
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Posted on Jan 02, 2017
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