AUDIO AND VISUAL SYSTEM (w/o Navigation System) SYSTEM DESCRIPTION


  1. CD (Compact Disc) PLAYER OUTLINE


    1. A compact disc player uses a laser pickup to read digital signals recorded on a compact disc (CD). By converting the digital signals to analog, it can play music and other content.

      CAUTION:

      Do not look directly at the laser pickup because the CD player uses an invisible laser beam. Be sure to operate the player only as instructed.

      Note


      • Do not disassemble any part of the CD player.

      • Do not apply oil to the CD player.

      • Do not insert anything but a CD into the CD player.

    2. Usable discs


      1. This player can play only audio CDs, CD-Rs (CD-Recordable), and CD-RWs (CD-ReWritable) that have any of the following marks:

        A00JYF3

    3. Precautions for use of discs

      Note


      • Copy-protected CDs cannot be played.

      • CD-Rs and CD-RWs may not be played depending on the recording conditions or characteristics of the discs, or due to damage, dirt, or deterioration caused by leaving the discs in the cabin for a long time.

      • Unfinalized CD-Rs and CD-RWs cannot be played.

      • Keep the discs away from dirt. Be careful not to damage the discs or leave your fingerprints on them.

      • Hold discs by the outer edge and center hole with the label side up.

      • Leaving the disc exposed halfway out of the slot for a long time after pressing the disc eject button may cause deformation of the disc, making the disc unusable.

      • If discs have adhesive tape, stickers, CD-R labels, or any traces of such labels attached, the discs may not be ejected or player malfunctions may result.

      • Keep the discs away from direct sunlight (exposure to direct sunlight may cause deformation of the disc, making the disc unusable).

      • Do not use odd-shaped CDs because these may cause player malfunctions.

      • Do not use discs whose recorded portion is transparent or translucent because they may be unable to be properly inserted, ejected, or played.

      Tech Tips


      • When it is cold or raining, if the windows mist up, mist and condensation may form in the player. In such a cases, the CD may skip or stop in the middle of play. Ventilate or dehumidify the cabin for a while before using the player.

      • The CD may skip if the player experiences strong vibrations when the vehicle is driven on rough road or similar uneven surfaces.

    4. Cleaning

      Note

      Do not use a lens cleaner because it may cause a malfunction in the pickup portion of the player.


      1. A00JW52

        If dirt is on the disc surface, wipe it clean with a soft dry cloth, such as an eyeglass cleaner for plastic lenses, from the inside to the outside in a radial direction.

        Note


        • Pressing on the disc by hand or rubbing the disc with a hard cloth may scratch the disc surface.

        • The use of solvent such as a record spray, antistatic agent, alcohol, benzine, and thinner, or a chemical cloth may cause damage to the disc, making the disc unusable.

  2. MP3/WMA OUTLINE


    1. Playable MP3 file standards

      Compatible standard MP3 (MPEG1 LAYER3, MPEG2 LSF LAYER 3)
      Compatible sampling frequency

      • MPEG1 LAYER3: 32, 44.1, 48 (kHz)

      • MPEG2 LSF LAYER3: 16, 22.05, 24 (kHz)
      Compatible bit rate

      • MPEG1 LAYER3: 64, 80, 96, 112, 128, 160, 192, 224, 256, 320 (kbps)

      • MPEG2 LSF LAYER3: 64, 80, 96, 112, 128, 144, 160 (kbps)

      • Compatible with VBR
      Compatible channel mode Stereo, joint stereo, dual channel, monaural

    2. Playable WMA file standards

      Compatible standard WMA Ver. 7, 8, and 9
      Compatible sampling frequency 32, 44.1, 48 (kHz)
      Compatible bit rate

      • Ver. 7, 8: CBR48, 64, 80, 96, 128, 160, 192 (kbps)

      • Ver. 9: CBR48, 64, 80, 96, 128, 160, 192, 256, 320 (kbps)

      • Compatible with playback of channel 2 only

    3. ID3 tag and WMA tag


      1. Additional textual information called ID3 tags can be input to MP3 files. Information such as song titles and artist names can be stored.

        Tech Tips

        This player is compatible with the ID3 tags of ID3 Ver. 1.0 and 1.1, and ID3 Ver. 2.2 and 2.3 (the number of characters complies with ID3 Ver. 1.0 and 1.1).

      2. Additional textual information called WMA tags can be input to WMA files. Information such as song titles and artist names can be stored.

    4. Usable media


      1. Only CD-ROMs, CD-Rs (CD-Recordable), and CD-RWs (CD-ReWritable) can be used to play MP3/WMA files.

        Note


        • CD-Rs and CD-RWs are more easily affected by a hot and humid environment than discs used for normal audio CDs. For this reason, some CD-Rs and CD-RWs may not be played.

        • If there are fingerprints or scratches on the disc, the disc may not be played or the CD may skip.

        • Some CD-Rs and CD-RWs deteriorate if they are left in the cabin for a long time.

        • Keep CD-Rs and CD-RWs in a storage case that is impenetrable to light.

    5. Usable media format


      1. Usable media format

        Disc format CD-ROM Mode 1, CD-ROM XA Mode 2 Form1
        File format ISO 9660 Level 1 and Level 2 (Joliet, Romeo)

        Tech Tips


        • As for MP3/WMA files written in any format other than those above, the contents of the files may not be playable normally or the file names or folder names may not be displayed correctly.

        • This player is compatible with multi-session discs and can play CD-Rs and CD-RWs on which MP3/WMA files are added. However, only the first session can be played.

        • Discs whose first session includes both music data and MP3 or WMA format data cannot be played.

      2. Standard and restrictions

        Maximum directory levels 8 levels
        Maximum number of characters for a folder name/file name 32 characters
        Maximum number of folders 192 (Including empty folders, route folders, and folders that do not contain MP3/WMA files)
        Maximum number of files in a disc 255 (Including non-MP3/WMA files)

    6. File names


      1. Only files with an extension of ".mp3" or ".wma" can be recognized and played as MP3 or WMA files.

      2. Save MP3 or WMA files with an extension of ".mp3" or ".wma".

        Note

        If saving non-MP3 or non-WMA files with an extension of ".mp3" or ".wma", those files are wrongly recognized as MP3 or WMA files and played. A loud noise may occur and damage to the speakers may result.

  3. AVC-LAN DESCRIPTION


    1. What is AVC-LAN?

      A00JXQTE07

      AVC-LAN, an abbreviation for "Audio Visual Communication Local Area Network", is a united standard developed by the manufacturers in affiliation with Toyota Motor Corporation. This standard pertains to audio and visual signals as well as switch and communication signals.

    2. Purpose:

      Recently, car audio systems have rapidly developed and the functions have vastly changed. The conventional car audio system is being integrated with multi-media interfaces similar to those in navigation systems. At the same time, customers are demanding higher quality from their audio systems. This is merely an overview of the standardization background. The specific purposes are as follows:


      1. To solve sound problems, etc. caused by using components of different manufacturers through signal standardization.

      2. To allow each manufacturer to concentrate on developing products they do best. From this, reasonably priced products can be produced.

        Tech Tips


        • If a short to +B or short to ground is detected in the AVC-LAN circuit, communication is interrupted and the audio system will stop functioning.

        • If the audio system has a navigation system installed, the multi-display unit acts as the master unit. If the navigation system is not installed, the audio head unit acts as the master unit instead. If the navigation receiver assembly is installed, it is the master unit.

  4. COMMUNICATION SYSTEM OUTLINE


    1. Components of the audio system communicate with each other via the AVC-LAN.

    2. The master component of the AVC-LAN is a radio receiver assembly with a 60 to 80 Ω resistor. This is essential for communication.

    3. If a short circuit or open circuit occurs in the AVC-LAN circuit, communication is interrupted and the audio system will stop functioning.

  5. DIAGNOSTIC FUNCTION OUTLINE


    1. The audio system has a diagnostic function (the result is indicated on the master unit).

    2. A 3-digit hexadecimal component code (physical address) is allocated to each component on the AVC-LAN. Using this code, the component in the diagnostic function can be displayed.

  6. "BLUETOOTH" OUTLINE

    A00K20RE01
    Text in Illustration
    *A w/ Accessory Meter *B w/o Accessory Meter
    *a "Bluetooth" Compatible Portable Audio Player *b "Bluetooth" Compatible Cellular Phone
    *c Radio Receiver Assembly ("Bluetooth" Receiver Antenna Built-in) *d Cellular Tower

    1. "Bluetooth" is a trademark owned by Bluetooth SIG. Inc.

    2. "Bluetooth" is a new wireless connection technology that uses the 2.4 GHz frequency band. This makes it possible to connect a cellular phone ("Bluetooth" compatible phone*) to the radio receiver assembly (the "Bluetooth" system is built-in) through the handsfree function of the cellular phone, even if it is in a pocket or bag. As a result, it is not necessary to directly connect the radio receiver assembly to the cellular phone.

      Tech Tips


      • *: Some versions of "Bluetooth" compatible cellular phones may not function.

      • The communication performance of "Bluetooth" may vary depending on obstructions or radio wave conditions between communication devices, electromagnetic radiation, communication device sensitivity and antenna capacity.

    3. "Bluetooth" audio function


      1. The "Bluetooth" built into the navigation receiver assembly and a "Bluetooth" compatible portable audio player* can be connected using a "Bluetooth" wireless connection. This enables files stored in the portable audio player to be heard from the vehicle speakers. In addition, operations such as play/stop can be performed directly from the navigation receiver assembly.

        *: Some versions of "Bluetooth" compatible audio players may not be able to operate using the "Bluetooth" function, or music may play, but functions available using the navigation receiver assembly may be limited.

      2. Available "Bluetooth" audio devices

        "Bluetooth" specifications Ver. 1.1 or higher (Recommended: Ver. 2.0 + EDR or higher)
        Following Profiles

        • A2DP (Advanced Audio Distribution Profile) Ver. 1.0 or higher

        • AVRCP (Audio/Video Remote Control Profile) Ver. 1.0 or higher (Ver. 1.3 or higher recommended)
        Maximum number of audio devices that can be registered 2

        Tech Tips

        The amount of remaining battery charge displayed on the navigation receiver assembly may be different from that of the portable player.

  7. RADIO DESCRIPTION


    1. Radio frequency band


      1. Radio broadcasts use the radio frequency bands shown in the table below.

        A00JVKLE02
    2. A00JY5HE02
      Text in Illustration
      *a FM (Stereo)
      *b FM (Monaural)
      *c AM

      Service area


      1. The service areas of AM and FM broadcasts are vastly different. Sometimes an AM broadcast can be received very clearly but an FM stereo broadcast cannot. An FM stereo broadcast has the smallest service area, and is prone to pick up static and other types of interference such as noise.

    3. Radio reception problems

      Tech Tips

      In addition to static, other problems such as "phasing", "multipath", and "fade out" exist. These problems are not caused by electrical noise, but by the radio signal propagation method itself.


      1. A00JYCRE02
        Text in Illustration
        *a Phasing
        *b Ionosphere

        Phasing

        AM broadcasts are susceptible to electrical interference and another kind of interference called phasing. Occurring only at night, phasing is the interference created when a vehicle receives 2 radio wave signals from the same transmitter. One signal is reflected off the ionosphere and the other signal is received directly from the transmitter.

      2. A00JYS6E02
        Text in Illustration
        *a Multipath

        Multipath

        Multipath is a type of interference created when a vehicle receives 2 radio wave signals from the same transmitter. One signal is reflected off buildings or mountains and the other signal is received directly from the transmitter.

      3. A00K1RDE02
        Text in Illustration
        *a Fade Out

        Fade out

        Fade out is caused by objects (buildings, mountains, and other such large obstacles) that deflect away part of a signal, resulting in a weaker signal when the object is between the transmitter and vehicle. High frequency radio waves, such as FM broadcasts, are easily deflected by obstructions. Low frequency radio waves, such as AM broadcasts, are much more difficult to deflect.

    4. Noise problem

      Technicians must have a clear understanding about the noise complaint of each customer. Use the following table to diagnose noise problems.

      Radio Frequency Noise Occurrence Condition Presumable Cause
      AM Noise occurs in a specified area Foreign noise
      AM Noise occurs when listening to an intermittent broadcast An identical program transmitted from multiple towers can cause noise where the signals overlap
      AM Noise occurs only at night Music beat from a distant broadcast
      FM Noise occurs while driving in a specified area Multipath or phasing noise resulting from a change in FM frequency

      Tech Tips

      If the noise does not match the examples above, refer to the descriptions about phasing and multipath.

  8. USB AUDIO SYSTEM FUNCTION OUTLINE


    1. The No. 1 stereo jack adapter assembly is equipped with a USB terminal. Connecting a USB device or "iPod" to the No. 1 stereo jack adapter assembly allows music files to be played. Not only is it possible to play music from a USB device with audio functions, it is also possible to play MP3 or WMA music files that are stored on a USB device. In addition, "iPod" control software is installed, allowing file selection from playlists and operation using shuffle mode.

      Tech Tips


      • Visual contents of an "iPod" cannot be played.

      • Operation through the controls of a USB device or "iPod" cannot be performed while it is connected.

    2. USB audio system compatible model


      1. USB Device

        The following device formats can be used.

        Compatible USB device formats

        • USB communication format: USB 2.0 FS (12MBPS)

        • File format: FAT16/32 (Windows)

        • Class: Mass storage class

        MP3 and WMA files written in any format other than those listed above may not play correctly, and their file and folder names may not be displayed correctly.

        Items related to standards and limitations are as follows:


        • Maximum directory hierarchy: 8 levels

        • Maximum number of folders in device: 999 (including the root folder)

        • Maximum number of files in device: 65025

        • Maximum number of files per folder: 255

      2. "iPod"

        "iPod" is a trademark of Apple Inc., registered in the U.S. and other countries.

        Supported "iPod" Models and Firmware Versions
        Supported "iPod" Model Supported Firmware Version
        "iPod" 5G Ver. 1.2.0 or more
        "iPod Nano" 1G Ver. 1.2.0 or more
        "iPod Nano" 2G Ver. 1.1.2 or more
        "iPod Nano" 3G Ver. 1.0.0 or more
        "iPod touch" Ver. 1.1 or more
        "iPod classic" Ver. 1.0.0 or more
        Unsupported "iPod" Models
        Unsupported Models "iPod shuffle"
        "iPhone"
        "iPod" 1G, 2G, 3G, 4G
        "iPod mini"

        Tech Tips

        Depending on the generation of "iPod" used, response to commands from the vehicle may be delayed.

        Items related to standards and limitations are as follows:


        • Maximum number of lists in device: 9999

        • Maximum number of songs in device: 65025

        • Maximum number of songs per list: No limitation

  9. AUTOMATIC SOUND LEVELIZER (ASL) FUNCTION OUTLINE


    1. The ASL function automatically adjusts the sound volume in order to enable clear audio quality even when vehicle noise increases (as vehicle speed increases, the volume is turned up, etc.).

      Vehicle speed signals are received from the combination meter assembly and used by ASL control.