Samsung Multifunction Printer Error Code U3-3213

Error code U3-3213 on a Samsung multifunction printer indicates that the printer's control system has detected a document jam within the Automatic Document Feeder (ADF) or Duplex Automatic Document Feeder (DADF) unit. The ADF/DADF is the component that automatically pulls originals from the input tray, feeds them past the scanner glass, and ejects them to the output tray. When the firmware detects that a document has stopped moving or has not cleared a sensor within the expected time window, it halts the feed mechanism and triggers this fault code to prevent damage to both the document and the internal drive components.

The ADF/DADF unit relies on a series of feed rollers, separation pads, and positional sensors that track document movement through the paper path. If a sheet stalls between any two sensor points, the controller registers the jam and stops the drive motor. The error also points to the ADF/DADF drive unit itself and its electrical connection to the scanner assembly, meaning the fault may not always be a physical paper obstruction. A worn or slipping feed roller, a failed drive motor, or a disconnected or damaged cable between the ADF drive unit and the scanner board can all produce the same U3-3213 code.

Begin diagnosis by opening the ADF cover and carefully removing any jammed or partially fed documents, checking for torn paper fragments left behind. After clearing the paper path, inspect the drive unit connection to the scanner to confirm the harness is fully seated and undamaged. If the error persists after clearing the jam and confirming all connections, the feed rollers, separation pad, or the ADF drive unit assembly likely require further inspection or replacement.