Control panel overview251. Introduction15 PowerSaverGoes into power save mode.16 On HookDialWhen you press this button, you can hear a dial tone.Then enter a fax number. It is similar to making a callusing speaker phone.17 Back Sends you back to the upper menu level.18 Scan Switches to Scan mode.19 Status LED Indicates the status of your machine (see"Understanding the status LED" on page 105).20 Eco Turn on Eco mode to reduce toner consumption andpaper usage (see"Eco printing" on page 55).21Print ScreenPress this button and the display will Print Screen? onthe display screen. If you want to print only the activescreen, select the Active. If you want to print the wholescreen, select Full.• Print Screen can only be used in theWindows and Mac operating systems.• You can only use this function with USB-connected machine.• When printing the active window/wholemonitor screen using the print screenbutton, the machine may use more tonerdepending on what is being printed.• You can only use this function if themachine’s Samsung Easy Printer Managerprogram is installed. If you are a Mac OSuser, you need to enable Screen PrintSettings from the Samsung Easy PrinterManager to use the Print Screen feature.Reduce/Enlarge You can reduce or enlarge the size of a copied imagefrom 25% to 400% when you copy original documentsfrom the scanner glass. (see "Reduced or enlargedcopy" on page 60).WPSConfigures the wireless network connection easilywithout a computer (see "Wireless network setup" onpage 162).