User's Guide Printer Basics 23 Menu Settings and Explanations Eco Mode The following Eco mode settings are available. When these settings are disabled, the settings made in Common Settings are applied. Sleep Timer Select the time period before the printer enters sleep mode (energy saving mode) when no operations are performed. The LCD screen turns black when the set time passes. Power Of fTimer Select the time period before the printer turns of fautomatically. Restore Default Settings Resets the selected settings to their defaults.