Samsung MultiXpress M537x series Basic Manual page 56

Loading paper in the tray
3 Load the paper. 4 Squeeze the multi-purpose tray paper width guides and adjust them to
the width of the paper. Do not force too much, otherwise the paper will
bend resulting in a paper jam or skew.
5 When you print a document, set the paper type and size for the multi-
purpose tray.
• See "Setting the paper size and type" on page 63.
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2. Media and tray