A paper jam error may occur if the paper is not feeding properly. I recommend cleaning the feed rollers to resolve the issue. Instructions for cleaning the feed rollers can be found starting on page 85 of the user manual ++[link|http://gdlp01.c-wss.com/gds/1/0300025221/02/TS5000ser_OnlineManual_Win_EN_V02.pdf|HERE]++.
You can also try feeding some medium-thickness 8.5x11" card stock through the printer or similar. Small pieces of paper can hide inside beyond your line of sight.