Duplex unit does not operate correctly
These are possible solutions. Try one or more of the following:

Check paper size and type

Check the paper size and type to make sure the paper is supported by the printer. If you are using automatic
duplexing, use only letter- or A4-size plain paper.
Check for paper jams
Check for and clear any paper jams. For more information, see “Paper jam in the duplex unit” on page 181.

Make sure the duplex unit is properly installed

Remove the duplex unit and reinstall it. For more information, see “Paper jam in the duplex unit” on page 181.
Two-sided paper type error
You have not selected the correct paper type or size for duplex printing.
1Select .
2Press to choose Paper Handling.
3Press to choose Type or Size.
4Press or to choose the correct selection.
Note: Use only plain paper in letter or A4 size. The printer will not make duplex copies on envelopes, card stock, or
photo paper.
Two-sided printing is not supported on the current paper size
The paper size is not supported for duplex printing.
1Select .
2Press to choose Paper Handling.
3Press to choose Size.
4Press or to choose the correct paper size.
Note: The printer supports duplex printing only on Letter and A4.
Two-sided printing is not supported on the current paper type
The paper type is not supported for duplex printing.
1Select .
2Press to choose Paper Handling.
3Press to choose Type.
4Press or to choose the correct paper type.
Note: The printer supports duplex printing only on plain paper.
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