AUDIO AND VISUAL SYSTEM(for Radio Receiver Type) Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

The No. 1 stereo jack adapter assembly sends an external device sound signal to the radio receiver assembly through this circuit.

The sound signal that has been sent is amplified by the radio receiver assembly, and then is sent to the speakers.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the radio receiver assembly or speakers.

WIRING DIAGRAM

A004QVME03
*a Shielded
*b No. 1 Stereo Jack Adapter Assembly
*c Radio Receiver Assembly

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY)


    1. Disconnect the D129 radio receiver assembly connector.

    2. Disconnect the D121 No. 1 stereo jack adapter assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      D129-28 (ALI) - D121-6 (ALO) Always Below 1 Ω
      D129-26 (ARI) - D121-5 (ARO)
      D129-27 (ASGN) - D121-7 (ASGN)
      D129-11 (AGND) - D121-9 (AGND)
      D129-25 (AUXI) - D121-8 (AUXO)
      D129-28 (ALI) - Body ground Always 10 kΩ or higher
      D129-26 (ARI) - Body ground
      D129-27 (ASGN) - Body ground
      D129-11 (AGND) - Body ground
      D129-25 (AUXI) - Body ground

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR