Brother HL-S7000DN User Manual page 70

Driver and Software
Duplex Printing
Before printing, make sure that you set the duplex paper adjustment lever at the back of the printer to
LTR/LGL or A4. When using Folio size paper, set the lever to LTR/LGL.
Letter, Legal or Folio size
Note
If you try to print when the paper adjustment lever for duplex printing is not correctly set for the paper size
being used, the LCD will show DX Lever Error and the machine will stop printing. If this happens, move
the lever to the correct paper size position.
 Automatic Duplex Printing
Select Layout.
Choose Long-Edge binding or Short-Edge binding in Two-Sided.
A4 size
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