An image display apparatus includes a main body in which a display unit is disposed, and a backlight unit that is detachable from the main body and to which a plurality of LED modules are attached, each of which is provided with LEDs, so that the image display apparatus displays an image on the display unit with backlight light emitted by the LEDs. The plurality of LED modules are assigned with different channels as units of control of light emission luminance of the LEDs and can be replaced independently of each other.