2CONTENTSCONTENTSBEFORE USE...................................................2How to reset your unit.................................................... 3INITIAL SETTINGS .........................................4BASICS ...........................................................6Component names and functions ............................. 6Common operations ....................................................... 7Common screen operations......................................... 8Selecting the playback source..................................... 9DISCS ...........................................................10USB...............................................................14iPod/iPhone ................................................15TUNER ..........................................................19DIGITAL RADIO (DAB)(Only for DDX4025DAB) .................................22OTHER EXTERNAL COMPONENTS .............26Using external audio/video players—AV-IN ........26Using a rear view camera ............................................26Using the external navigation unit ..........................27BLUETOOTH (Only for DDX4025DAB/DDX4025BT/DDX4055BT) ...............................28SETTINGS .....................................................36Sound adjustment .........................................................36Adjustment for video playback.................................37Changing display design .............................................39Customizing the screen ....................40Customizing the system settings .............................40Setting menu items .......................................................42REMOTE CONTROLLER ...............................45CONNECTION/INSTALLATION ...................49REFERENCES ................................................54Maintenance ....................................................................54More information ...........................................................54Error message list ...........................................................58Troubleshooting .............................................................59Specifications...................................................................61How to read this manual:• Illustrations of DDX4025BT are mainly used for explanation. The displays and panels shown in thismanual are examples used to provide clear explanations of the operations. For this reason, they may bedifferent from the actual displays or panels.• This manual mainly explains operations using the buttons on the monitor panel and touch panel. Foroperations using the remote controller (KNA-RCDV331: separately purchased), see page 45.• < > indicates the various screens/menus/operations/settings that appear on the touch panel.• [ ] indicates the buttons on the touch panel.• Indication language: English indications are used for the purpose of explanation. You can select theindication language from the < Setup> menu. (Page 44)BEFORE USEBEFORE USE! WARNINGS: (To prevent accidents anddamage)• DO NOT install any unit or wire any cable in alocation where;– it may obstruct the steering wheel and gearshiftlever operations.– it may obstruct the operation of safety devicessuch as air bags.– it may obstruct visibility.• DO NOT operate the unit while driving.If you need to operate the unit while driving, besure to look around carefully.• The driver must not watch the monitor whiledriving.The marking of products using lasersThe label is attached to the chassis/case and saysthat the component uses laser beams that havebeen classified as Class 1. It means that the unit isutilizing laser beams that are of a weaker class. Thereis no danger of hazardous radiation outside the unit.