056336 Rev. AA NAVIGUIDE 4000Page 2–14 2.2: Operating the Bus Interface Units2.2.4 Adjusting the BIU Display BrightnessThe brightness of the BIU display and operating key illumination may be changedthrough the brightness sub-menu.Fig. 0-6adjusting the dis-play brightnessPress to access the brightness setting menu.Top Right Key: Increases the display brightness.Top Left Key: Reduces the display brightness.Press to quit the brightness setting menu and resumenormal operation. The menu is quit automatically if nokey is pressed for 10 seconds.BRIGHTNESS (70%)ÿÿÿÿÿÿÿÿÿÿÿÿDIMMUTEDIMMUTE
