Dell 1600n Paper jam 2 (check inside)

I had constant Paper jam 2  error with my Dell 1600n.

If i closed the cartridge door harder sometimes the printer would pass this error but most of the times it didn't. So i ended up cleaning the paper sensor from the fuser (the one with the S plastic piece) with no success.

I've checked the connection of the sensor to the motherboard and i was moving, so I soldered the 3 pin jack.

After that it worked just fine.

Maybe it will help!paper sensor(red), the plug (green)the 3 pin jack underneath the motherboard