Hi, my name is ***** ***** I'll be assisting you today. Does the printer indicate where the jam is supposedly located? Is it with the auto-document-feeder for the scanner?
Also, have you tried scanning from the flat-bed glass, and does scanning work from there?
The service manual for your printer is available here: http://www.moroinformatica.it/files/articles/docs/BROTH/DCP-195C_SERVICE%20MANUAL.pdf It is a combination manual that covers a number of different MFCs including yours.
You will need to enter maintenance mode by following the procedure on page 9-1 of the above manual. Then skip to page 9-23 and follow the procedure there to test the ADF sensors. If the sensors indicate paper present or a jam, you will have to try to get at the sensors and make sure they aren't stuck.
The approximate locations of the sensors for the ADF are shown on page 3-43