Paper light flashing

Open the front compartment to see if there is a paper jam. It could be out of paper. Or the paper rollers could be jammed, or immovable. What kind of printer is it? Laser or Ink-Jet, Thermal, ect?

I had the same problem and looked around for a paper jam, I had to actually take the toner cartridge out in order to see the paper jam, once I removed the jammed paper the printer worked just fine.

What worked for me was to clean the drumunit; take the toner out of the drum unit and clean between the plastic housing and the drum. Dust heaps up and presumably makes the toner rotate more difficult.
I just used a piece of folded paper and blew the rest out..
Bas

I tried everything - all manners of pressing buttons in different orders ("Hold down the Go, turn off the power, press Go 14 times - 2 slow, 12 fast - turn the power back on, etc.), I used the blue thing to clean the corona wire, I quadruple checked for tiny paper jams, I used a different weight paper, I made sure everything was seated correctly. None of this helped.

As I was researching a new printer I decided to BLAST EVERYTHING WITH A CAN OF AIR. Printer is now working.

I know Brother says not to do it. This is not a one-size-fits-all solution. I just happen to have a lot of loose toner and dust floating around.

ITS A HL2070N BROTHER PRINTER