Is saying clear paper jam when no paper is jammed , i have tried switching everything off and back on but still comes back, have checked all around for jammed paper but cant find!

I will take a wild guess here. You say your paper jam was very bad. Now something started this problem and maybe when you went in to clear you didn't clear everything. Something is still stuck in there . Go back in and look around with a flashlight, I think you will find another paper blockage. Good Luck Friend.

Turn off your printer then restart your PC,turn on back your printer then your pC, try to print again...

Hi. This could be sendor is failing or there is a jammed paper on you printer.

How to removed jammed paper

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.

Here's how to fix the sensor

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.

Have a good one!

If you need further help, reach me via phone at https://www.6ya.com/expert/elixirjose_00375ea24bd8141b

any sensor actuator broken?

may be there is small pice of paper inside just remove that.

check to make sure there aren't little pieces of paper jammed at the ends of the roller. if you can pop out the roller easily you may find tiny pieces of paper still lodged in there

Open the rear clean out cover and check for a jam. Or the rear clean out cover could just be off like mine was. I was get out of paper message. So I found a the HP help manual that there was a rear clean out. I reached around back and found that i twas off, I popped it back on and it works just fine now.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jay_17408fb1a2cad107

There may be a problem with the fuser unit. First check all the doors and drawers for paper jams, including removing the toner cartridge and looking inside. Leave the cartridge out, turn off your machine, unplug for 1 minute, then turn back on. Close door without the cartridge inside. Machine should tell you to insert cartridge. Put it back in, and see what it does. If a simple reset like i have described does not solve the problem, there may be a small piece of torn paper somewhere, or a sensor may be broken or dirty. Please reply with the results!

Look Inside of each cover on the printer & see if there is a small piece of paper inside. Also, check if there is loose dust from the paper built up by the sensor switches. If none of these work, try flipping the sensor switches manually. Sometimes these get stuck in a particular bad paper jam.

Turn the printer off, unplug it, wait 10 seconds, plug it back it, and turn it back on. If it still says there's a paper jam, there is something interfering with it. Turn it off again, pull everything out that you are meant to, poke around, take anything you see that doesn't belong out, put everything back in the right place, and turn it back on. If you still have a problem, you should contact the manufacturer.