Select the menus on the control panel as described below.
You cannot change settings that have been locked by your administrator.
Adjust the volume.
Mute
Select On to mute all sound.
Normal Mode
Select the volume such as Button Press.
Quiet Mode
Select the volume such as Button Press in Quiet Mode.
Adjust the time period to enter a sleep mode (energy saving mode) when the printer has not performed any operations. The LCD screen turns black when the setting time passes.
Select On to return from sleep mode (energy saving mode) by tapping the touch panel. When this is off, you need to press a button on the control panel to wake the printer. Turning this feature off prevents any unintentional operations caused due to foreign objects touching the screen. You can also set a time period during this feature is on.
Your product may have this feature or the Power Off Settings feature depending on the location of purchase.
Select this setting to turn the printer off automatically when it is not used for a specified period of time. You can adjust the time before power management is applied. Any increase will affect the product’s energy efficiency. Please consider the environment before making any change.
Date/Time
Enter the current date and time.
Daylight Saving Time
Select the summer time setting that applies to your area.
Time Difference
Enter the time difference between your local time and UTC (Coordinated Universal Time).
Select the country or region in which you are using your printer. If you change the country or region, your fax settings return to their defaults and you must select them again.
Specify the initial menu displayed on the LCD screen when the printer turns on and Operation Time Out is enable.
Change the layout of the icons on the LCD screen. You can also add, remove, and move icons.
Select On to return to the initial screen when no operations have been performed for the specified time. When user restrictions have been applied and no operations are performed for the specified time, you are logged out and returned to the initial screen.
Select the default information you want to display when you press the 
button.
The ADF and the scanner glass are equipped with sensors that automatically detect the size of the paper. However, due to the characteristics of the sensors, similar sizes cannot be identified, and K size paper, which is mainly used in China, cannot be recognized correctly in the printer's initial state. Select K Size Priority if you often use K size paper. The original size will be recognized as K size instead of the approximate size. Depending on the size and orientation of the paper, it may be detected as another approximate size. Also, K size may not be automatically detected depending on the function you are using. For example, when scanning and saving to a computer using an application, whether or not K size can be automatically detected depends on the behavior of the application software.