System Setup2143. Useful Setting MenusHumidity Optimizes print quality according to the humidity in theenvironment.Auto ContinueDetermine whether or not the machine continuesprinting when it detects the paper does not match thepaper settings.• Off: If a paper mismatch occurs, the machine waitsuntil you insert the correct paper.• On: If a paper mismatch occurs, an error messagewill display. The machine waits for about 30 second,then automatically clear the message and continueprinting.Auto CR Allows you to append the required carriage return toeach line feed, which is useful for Unix or DOS users.Auto Tray Swi.Determine whether or not the machine continuesprinting when it detects the paper does not match. Forexample, if both tray 1 and tray 2 are filled with thesame size paper, the machine automatically prints fromtray 2 after the tray 1 runs out of paper.This option does not appear if you selectedAuto for Paper Source from printer driver.Item DescriptionPaper Substit.Automatically substitutes the printer driver’s paper sizeto prevent the paper mismatch between Letter and A4.For example, if you have A4 paper in the tray but youset the paper size to Letter in the printer driver, themachine prints on A4 paper and vice versa.Tray ProtectDecides to use or not use the Auto Tray Swi. feature. Ifyou set tray 1 to on, for example, then tray 1 is excludedduring tray switching.Print BlankPageThe printer detects the printing data from computerwhether a page is empty or not. You can set to print orskip the blank page.Item Description