Lexmark C720 User's Guide - Page 52

16 Tray linking If you want to increase your printer paper capacity, add an optional drawer with a 500-sheet paper tray to your printer. If you load the same paper size and paper type in both trays, the printer automatically links the trays when one tray is empty, and feeds paper from the other tray. By linking the trays you create a single paper source that holds up to 750 sheets. To initiate tray linking: 1 Load paper of the same size and type in both trays. 2 Make sure the paper guides in both trays are set to the proper position for the paper size you have loaded. Note: The position of the paper guides tells the printer the paper size loaded. See Paper size sensing for more information about changing the Auto Size Sense setting. 3 Select the same Paper Type setting for both sources. See Changing the Paper Type setting for more information about changing the Paper Type setting. To disable tray linking, change the Paper Type setting for one or both of the trays to a custom setting. See Changing menu settings for more information. 52