Samsung ProXpress M337x Service Manual page 152

4. Alignment and Troubleshooting
► Error Code
U3-3113
U3-3313
U3-3314
U3-3413
U3-3513
U3-3514
► Error message
Original paper jam / Original paper jam inside of scanner. Remove jam
► Symptom
A document jam was detected in the ADF unit.
► Troubleshooting method
1) Remove the jammed paper from ADF unit.
2) If the error persists, turn the machine off then on.
3) If the document jam occurs continually, open the ADF cover-top. Check if the ADF pick up roller is contaminated
or worn out. Clean or replace it.
4) If the pick up roller is OK, check the followings.
a) Check if the ADF motor is working normally.
b) Check if the connector on the ADF joint board is connected correctly.
5) If the problem persists, replace the ADF unit.
► Error Code
U3-4110
► Error message
Door of scanner is open.
► Symptom
ADF top cover is opened.
► Troubleshooting method
1) Close the ADF top cover.
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