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ADF cover opened
When an error occurs because the ADF is not closed correctly, "U" and "4" will display alternately on the function number display panel of the scanner. Please inspect if the ADF is closed correctly.
Please perform the following:
- Remove all documents from the ADF paper chute.
- Pressing down on the ADF open button, open the ADF.
- Close the ADF pushing the center part of the ADF carefully.
