System Description

COMMUNICATION SYSTEM
1. Components in the audio system communicate with each other through the Audio Visual Communication-Local Area Network (AVC-LAN).
  
  Fig 1: Communication - Component Diagram
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. The receiver has a resistance of 60 to 80 Ω, which is necessary for communication.
3. When a short circuit or circuit breakdown occurs in the AVC-LAN circuit, the audio system does not operate normally due to the communication cutoff.
DIAGNOSIS FUNCTION
1. The audio system has a diagnosis function. The diagnosis result is displayed on the LCD of the radio receiver assy.
2. A component code (physical address), or 3 digit code (in hexadecimal), is set for each component of the AVC-LAN.
3. The logical address, or 2 digit code (in hexadecimal), is set for each function and component unit in each component of the AVC-LAN.
COMPACT DISC PLAYER
1. The Compact Disc (CD) player uses a laser beam pickup to read the digital signals recorded on CDs and reproduce analog signals of music, etc. The CD player can play 12 cm (4.7 in.) and 8 cm (3.2 in.) discs.
  NOTE: Never disassemble or apply oil to any part of the player unit. Only insert discs into the CD player.
  
  CAUTION: Do not look directly at the CD player's laser beam. Be sure to only operate the player as instructed.
MAINTENANCE
1. Tape player/head cleaning:
  1. Raise the slot cover with your finger. Using a pencil or similar object, push in the guide.
  2. Using a cleaning pen or cotton applicator soaked in cleaner, clean the head surface, pinch rollers and capstans.
    
    Fig 2: Identifying Pinch Rollers, Capstans & Head
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. CD cleaning:
  1. If a disc is dirty, clean the disc by wiping the CD's underside radially with a soft cloth.
    NOTE: Do not use a conventional record cleaner or anti-static preservative.
    
    Fig 3: Cleaning CD
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002