It does not take much to have a false paper jam issue.
Unplug the printer's power cord and disconnect any other cables.
Get a bright flashlight and open up every tray, lid, paper feed port possible and look very carefully.
Even a tiny scrap of paper may cause the problem.
Do you have the User Guide/Manual?
http://support.ricoh.com/bb_v1oi/html/oi/re/model/mp200/mp200fr.htm
Per the User Guide/Manual, gently clean and clear out any dust, debris, little paper scraps, etc.
Check the troubleshooting section. There may be some factory reset button or some combination of button presses to clear the error.
Do remember that the factory reset may require you to reconfigure the printer if you have changed any of the default settings.
Also look for signs of physical damage: bent metal, plastic chips, loose or bare wires, corrosion, etc..