AUDIO AND VISUAL SYSTEM


  1. FUNCTION OF MAIN COMPONENTS

    Component Function

    Multi-media Module Display


    • Multi-display

    		 Displays image information received from the radio receiver assembly.
    Lexus Display Audio Controller (Remote Operation Board)*1 Sends operation signals to the radio receiver assembly.
    Remote Touch*2

    • Sends operation signals to the radio receiver assembly.

    • Vibrates the touchpad to provide feedback according to signals received from the radio receiver assembly.
    Radio Receiver Assembly

    • Plays back audio from each audio source, such as radio, CD and Bluetooth audio.

    • Sends image information such as the audio source screen and setting screen to the multi-display.

    • Sends audio signals from each audio source to the stereo component amplifier assembly.

    • Enables recording of an audio CD to hard disk drive while currently being played.*3

    • Sends status information of each audio source to the combination meter assembly.

    • Sends call information of a phone call received on a user's cellular phone connected via Bluetooth, to the combination meter assembly.
    Hard Disk Drive*3 Built into the radio receiver assembly, records and saves data from an audio CD currently being played.

    Window Glass Antenna Wire


    • AM

    • FM Main

    • FM-sub

    		 Receives radio broadcasting signals (AM/FM Main/FM-sub).
    Amplifier Antenna Assembly Amplifies radio broadcasting signals from the radio antenna and sends them to the radio receiver assembly.

    Window Glass Antenna Wire


    • DAB*4

    		 Receives radio broadcasting signals (DAB).
    Digital Audio Broadcast Antenna Amplifier*4 Amplifies DAB signals from the DAB antenna and sends them to the radio receiver assembly.
    Steering Pad Switch Assembly Sends operation signals from switches such as the volume switch, mode switch, seek switch, telephone switch and voice switch, to the spiral cable with sensor sub-assembly.
    Spiral Cable with Sensor Sub-assembly Sends operation signals from the steering pad switch assembly to the radio receiver assembly.
    No. 1 Stereo Jack Adapter Assembly

    • Sends audio signal to the radio receiver assembly when an auxiliary device is connected.*5

    • Sends audio and/or video signals to the radio receiver assembly when an auxiliary device is connected.*6

    • Communicates with the radio receiver assembly via a USB communication line when a USB memory device, portable audio player (USB type) or Apple product is connected.
    Roof Console Box Houses telephone microphone assembly.
    Telephone Microphone Assembly Recognizes speech during voice recognition system operation and sends the audio signal to the radio receiver assembly*7 or telematics transceiver (data communication module)*8.

    Rear Control Switch*9


    • Rear Seat Audio Control Panel

    		 Sends operation signals from switches such as the channel up/down switch, tune up/down switch, volume up/down switch, power switch and mode switch operation to the radio receiver assembly.
    Combination Meter Assembly

    • Sends vehicle speed signals to the radio receiver assembly and stereo component amplifier assembly.

    • Displays information such as audio status information received from the radio receiver assembly on the multi-information display.

    • Sends operation signals to the radio receiver assembly when the audio system is operated via the multi-information display.

    • Displays call information, sent from the radio receiver assembly, of a phone call received on a user's cellular phone.
    Stereo Component Amplifier Assembly Amplifies audio signals sent from the radio receiver assembly and sends them to the speakers.
    Telematics Transceiver (Data Communication Module)*8

    • Sends a part of audio signals sent from the radio receiver assembly to the speakers.

    • Sends microphone voice signals sent from the telephone microphone assembly to the radio receiver assembly.

    *1: Models with Lexus display audio system

    *2: Models with 15-speaker surround sound system or navigation system

    *3: Models for China with navigation system

    *4: Models with Digital Audio Broadcast (DAB) tuner

    *5: Destination package for Hong Kong

    *6: Except destination package for Hong Kong

    *7: Except models for China

    *8: Models for China

    *9: Models with 3-zone control air conditioning system

  2. DIAGNOSIS


    1. For details on the procedure required to enter the Service Menu screen, refer to the Repair Manual.