A gamut error notifying device, comprising: a display means adapted to display an image of an input image signal; a gamut error detection means adapted to detect a gamut error of the input image signal; a plurality of notifying means (5, 8, 9) adapted to notify that a gamut error has occurred in different methods from each other; a setting means adapted to carry out an operation of setting which notifying means of the plurality of notifying means is to be caused to notify a gamut error and an operation of setting a condition for deactivating notification of a gamut error; a storage means adapted to store information indicating a setting result by the setting means; and a control means (10, 13) adapted to acquire, based on that a gamut error has been detected by the gamut error detection means, information indicating the setting result from the storage means, and to cause a notifying means of the plurality of notifying means, indicated by the information, to carry out notification of a gamut error and deactivation of notification of a gamut error under a condition indicated by the information; wherein a first one of the plurality of notifying means includes an indicator arranged separate from the display means, and wherein the plurality of notifying means include a means adapted to superimpose a zebra pattern to be displayed in a portion of a pixel position where a gamut error has occurred, of an image to be displayed in the display means and a means adapted to display that a gamut error has occurred by means of an on-screen display function in the display means, and the control means (10, 13) is adapted to cause the indicator to carry out notification of a gamut error by lighting the indicator, and to cause the means adapted to superimpose a zebra pattern to superimpose a zebra pattern in a portion of a pixel position where a gamut error has occurred, and to cause the means adapted to display that a gamut error has occurred by means of an on-screen display function in the display means to display an on-screen display. a display means adapted to display an image of an input image signal; a gamut error detection means adapted to detect a gamut error of the input image signal; a plurality of notifying means (5, 8, 9) adapted to notify that a gamut error has occurred in different methods from each other; a setting means adapted to carry out an operation of setting which notifying means of the plurality of notifying means is to be caused to notify a gamut error and an operation of setting a condition for deactivating notification of a gamut error; a storage means adapted to store information indicating a setting result by the setting means; and a control means (10, 13) adapted to acquire, based on that a gamut error has been detected by the gamut error detection means, information indicating the setting result from the storage means, and to cause a notifying means of the plurality of notifying means, indicated by the information, to carry out notification of a gamut error and deactivation of notification of a gamut error under a condition indicated by the information; wherein a first one of the plurality of notifying means includes an indicator arranged separate from the display means, and wherein the plurality of notifying means include a means adapted to superimpose a zebra pattern to be displayed in a portion of a pixel position where a gamut error has occurred, of an image to be displayed in the display means and a means adapted to display that a gamut error has occurred by means of an on-screen display function in the display means, and the control means (10, 13) is adapted to cause the indicator to carry out notification of a gamut error by lighting the indicator, and to cause the means adapted to superimpose a zebra pattern to superimpose a zebra pattern in a portion of a pixel position where a gamut error has occurred, and to cause the means adapted to display that a gamut error has occurred by means of an on-screen display function in the display means to display an on-screen display.