Chapter 2 Handling Adjusting the Display Brightness The brightness of the display can be adjusted by pressing the brightness up/down buttons. It is set to the brightest setting by default. 1 Turn on the display by connecting it to the printer or a computer. 2 Remove the rear cover. 3 Press the brightness up/down buttons to adjust the brightness. There are four brightness levels. 4 Attach the rear cover. 17 .