Adjusting the Volume
You can also set whether the machine emits sounds notifying you of operations and statuses, such as when operating the control panel and errors are detected.
This section describes how to configure the settings using the control panel.
You can also configure the settings using Remote UI from a computer. Managing the Machine from a Computer (Remote UI)
You can also configure the settings using Remote UI from a computer. Managing the Machine from a Computer (Remote UI)
1
On the control panel, press [Menu] in the [Home] screen. [Home] Screen
2
[Preferences] 
[Volume Settings].
[Volume Settings].The [Volume Settings] screen is displayed.
3
Set whether notification sounds are emitted. [Volume Settings] Screen
To emit notification sounds, select the item and press [On].
The volume is adjusted.