A display device comprising: a display component; an output component configured to output a first signal having guidance information and a second signal having audio information as guidance audio and non-guidance audio, respectively, the guidance information pertaining to an operation performed on the display device or a status of the display device, the audio information pertaining to content displayed on the display component; a setting component configured to perform volume setting; a table in which an output level of the first signal and output levels of the second signal are respectively associated with volume setting values, the output level of the first signal being an output volume value of the first signal, the output levels of the second signal being output volume values of the second signal; and a controller configured to control output levels of the first signal and the second signal based on the table, characterized in that: the table is configured such that the output level of the first signal written to the table can be changed by a user to a desired value; and the table is further configured to be rewritten according to a change in the written output level of the first signal such that the volume setting value of the display device is restricted to a range in which the output level of the second signal does not reach nor exceed the output level of the first signal, such that the controller sets the output level of the first signal to a value that is greater than the output level of the second signal and sets the output level of the first signal to a value greater than zero when the output level of the second signal is zero. a display component; an output component configured to output a first signal having guidance information and a second signal having audio information as guidance audio and non-guidance audio, respectively, the guidance information pertaining to an operation performed on the display device or a status of the display device, the audio information pertaining to content displayed on the display component; a setting component configured to perform volume setting; a table in which an output level of the first signal and output levels of the second signal are respectively associated with volume setting values, the output level of the first signal being an output volume value of the first signal, the output levels of the second signal being output volume values of the second signal; and a controller configured to control output levels of the first signal and the second signal based on the table, characterized in that: the table is configured such that the output level of the first signal written to the table can be changed by a user to a desired value; and the table is further configured to be rewritten according to a change in the written output level of the first signal such that the volume setting value of the display device is restricted to a range in which the output level of the second signal does not reach nor exceed the output level of the first signal, such that the controller sets the output level of the first signal to a value that is greater than the output level of the second signal and sets the output level of the first signal to a value greater than zero when the output level of the second signal is zero. the table is configured such that the output level of the first signal written to the table can be changed by a user to a desired value; and the table is further configured to be rewritten according to a change in the written output level of the first signal such that the volume setting value of the display device is restricted to a range in which the output level of the second signal does not reach nor exceed the output level of the first signal, such that the controller sets the output level of the first signal to a value that is greater than the output level of the second signal and sets the output level of the first signal to a value greater than zero when the output level of the second signal is zero.