English 3WARNINGS:(To prevent accidents and damage)• DO NOT install any unit or wire any cable ina location where;– it may obstruct the steering wheel andgearshift lever operations.– it may obstruct the operation of safetydevices such as air bags.– it may obstruct visibility.• DO NOT operate the unit while driving.If you need to operate the unit whiledriving, be sure to look around carefully.• The driver must not watch the monitorwhile driving.Cautions on the monitor:• The monitor built in this unit has beenproduced with high precision, but itmay have some ineffective dots. This isinevitable and is not considered defective.• Do not expose the monitor to directsunlight.• Do not operate the touch panel using aball-point pen or similar tool with the sharptip.Touch the buttons on the touch panel withyour finger directly (if you are wearing aglove, take it off ).• When the temperature is very cold or veryhot...– Chemical changes occur inside, causingmalfunction.– Pictures may not appear clearly ormay move slowly. Pictures may notbe synchronized with the sound orpicture quality may decline in suchenvironments.How to read this manual:• Illustrations of DDX4028BT/DDX4058BTare mainly used for explanation.• < > indicates the variable screens/menus/operations/settings that appearon the touch panel.• [ ] indicates the buttons on the touchpanel.• Indication language: Englishindications are used for the purposeof explanation. You can select theindication language from the <Setup>menu. (☞ page 40 )For safety...• Do not raise the volume level too much,as this will make driving dangerous byblocking outside sounds, and may causehearing loss.• Stop the car before performing anycomplicated operations.Temperature inside the car...If you have parked the car for a long timein hot or cold weather, wait until thetemperature in the car becomes normalbefore operating the unit.How to reset your unitReset buttonIf the unit fails to operate properly, pressthe Reset button. The unit returns to factorysettings when the Reset button is pressed(except the registered Bluetooth devices).About Remote ControllerOptional Remote Controller KNA-RCDV331 isdesigned for controlling this unit.Refer to the instruction manual that comeswith the remote controller.Before use