Now, check the duplexer and sorter. Close the machine and the jam light should go out. If not, pull out all the cassettes and drawers and check for paper sticking out. Be sure to follow your manual. Most are very well written and illustrated.
Most machines have error codes built in.
They generally tell you what sort of problem you are having by the type of code. C-codes are usually a problem with the copier itself. A-codes are usually problems with accessories. Most codes other than general error codes or E type codes require a Service Technician to remedy the problem. On Toshiba copiers, hold down the clear and 8 key at the same time to get the code.