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Error code reference

Samsung Multifunction Printer Error Code U3-3314

Document jam detected in ADF/DADF unit.

Samsung codesSamsung multifunction printer codes

Document jam detected in ADF/DADF unit.

First step from the service manual

Remove the jammed paper; check ADF/DADF drive unit and connection to scanner.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What U3-3314 means on a Samsung multifunction printer

The U3-3314 error code on Samsung multifunction printers indicates that the automatic document feeder (ADF) or duplex automatic document feeder (DADF) unit has detected a paper jam during a scan or copy operation. The ADF/DADF system uses a combination of document detection sensors and drive rollers to pull originals through the feed path. When the firmware detects that a document has stalled, failed to advance, or is obstructing the feed path, it halts the operation and triggers this code to prevent damage to both the original document and the internal feed mechanism.

The ADF/DADF drive unit consists of a motor, a series of pick and feed rollers, and sensor assemblies that monitor document position and movement. If the drive unit loses traction on the document, or if a sensor detects a sheet that is not advancing within the expected time window, the jam condition is flagged. Connection faults between the drive unit and the scanner assembly can also produce this error even when no physical paper jam is present, making it important to inspect both the mechanical feed path and the electrical connection to the scanner board.

Common contributing factors include worn or contaminated feed rollers that fail to grip the media consistently, torn or dog-eared originals that catch on the feed path, and damaged or loosely seated connectors between the ADF drive unit and the scanner. Inspecting the entire document feed path, clearing any debris, and confirming all electrical connections are fully seated should be the first steps before considering component replacement.

Source: manufacturer service documentation.

Common causes of U3-3314

  1. 01

    Physical document jam in the ADF/DADF feed path

    Wiring / connection

    A sheet of paper or a torn fragment has become lodged in the feed rollers or along the document path inside the ADF unit. Open the ADF cover and carefully remove any visible paper, checking for small torn pieces that can block sensor windows.

  2. 02

    Worn or dirty ADF pick and feed rollers

    Part replacement

    Rollers that are glazed, worn down, or coated with paper dust lose the grip needed to pull documents through consistently, causing sheets to stall mid-feed. Inspect the rollers for visible wear or residue and clean them with a lint-free cloth dampened with water.

  3. 03

    Damaged or improperly loaded original document

    Wiring / connection

    Originals with torn edges, folds, staples, sticky notes, or excessive thickness can catch on the feed path and trigger a jam detection event. Always load flat, undamaged sheets within the specified weight and size range for the ADF.

  4. 04

    Loose or damaged connector between the ADF drive unit and scanner

    Wiring / connection

    A poorly seated or damaged cable connecting the ADF drive unit to the scanner assembly can cause the printer to misread sensor signals and report a jam even when the feed path is clear. Inspect the connector for bent pins, debris, or a loose seating and reseat it firmly.

  5. 05

    Faulty ADF/DADF drive unit

    Part replacement

    If the drive motor or internal drive components within the ADF unit have failed, the unit cannot advance documents reliably and will repeatedly trigger this error. If all other causes have been ruled out, the drive unit itself may require replacement.

See the test procedure for each cause

Frequently asked questions about U3-3314

What does U3-3314 mean on a Samsung multifunction_printer?
The U3-3314 code means the printer has detected a document jam inside the automatic document feeder (ADF) or duplex automatic document feeder (DADF) unit. This error halts scanning and copying operations to prevent damage to the original document and the internal feed mechanism. It can result from an actual paper jam, worn rollers, a problematic original, or a connection fault between the ADF drive unit and the scanner.
How do I fix the U3-3314 error on my Samsung printer?
Start by opening the ADF cover and carefully removing any jammed or torn paper from the feed path. Once the path is clear, check that the original documents you are feeding are flat, undamaged, and free of staples or folds. Also inspect the cable connection between the ADF drive unit and the scanner assembly to make sure it is fully seated. If the error persists after clearing the jam and reseating the connector, the feed rollers or the ADF drive unit itself may need to be serviced or replaced.
Is it safe to continue using my Samsung printer while the U3-3314 error is active?
You should not attempt to force documents through the ADF while this error is active, as doing so can tear the original and leave fragments inside the mechanism. The printer will block ADF-based operations until the jam condition is resolved. Basic flatbed scanning and printing functions may still be available depending on the model, but the ADF should not be used until the error is cleared.
How much does it cost to repair a U3-3314 error on a Samsung multifunction printer?
If the fix is simply clearing a jammed sheet or reseating a loose connector, there is no parts cost involved. Replacing worn ADF feed rollers typically costs between $15 and $60 depending on the specific roller kit for the model. If the ADF drive unit itself has failed, replacement parts and labor can range from $80 to $250 or more, depending on the printer model and whether the work is done by a technician.
Will resetting my Samsung printer clear the U3-3314 error?
A simple power cycle or soft reset will generally not clear U3-3314 if the underlying cause has not been resolved, because the jam detection sensors will re-trigger the error as soon as the ADF is used again. The jam must be physically cleared and any connection or component issues must be corrected first. Once the feed path is clear and functional, the error should not return during normal operation.

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