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

A01E1VNE15

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO JACK ADAPTER)


    1. Disconnect the R17 and R20 radio receiver assembly connectors.

    2. Disconnect the N4 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
      R17-28 (VAL+) - N4-6 (ALO) Always Below 1 Ω
      R17-26 (VAR+) - N4-5 (ARO)
      R17-27 (VA-) - N4-7 (ASGN)
      R17-11 (AGND) - N4-9 (AGND)
      R17-25 (ADPG) - N4-8 (AUXO)
      R20-2 (US1-) - N4-2 (UDO-)
      R20-3 (US1+) - N4-3 (UDO+)
      R17-28 (VAL+) - Body ground Always 10 kΩ or higher
      R17-26 (VAR+) - Body ground
      R17-27 (VA-) - Body ground
      R17-11 (AGND) - Body ground
      R17-25 (ADPG) - Body ground
      R20-2 (US1-) - Body ground
      R20-3 (US1+) - Body ground

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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