AUDIO AND VISUAL SYSTEM(for 7 Inch Display) Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter

DESCRIPTION

• The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly via 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

*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 O146 radio receiver assembly connector.

   2. Disconnect the O151 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 O146-14 (ADPG) - O151-2 (ADPG) Always Below 1 Ω O146-10 (AGND) - O151-7 (AGND) Always Below 1 Ω O146-12 (VAR+) - O151-6 (VAR+) Always Below 1 Ω O146-11 (VAL+) - O151-1 (VAL+) Always Below 1 Ω O146-13 (VA-) - O151-5 (VA-) Always Below 1 Ω O146-14 (ADPG) or O151-2 (ADPG) - Body ground Always 10 kΩ or higher O146-10 (AGND) or O151-7 (AGND) - Body ground Always 10 kΩ or higher O146-12 (VAR+) or O151-6 (VAR+) - Body ground Always 10 kΩ or higher O146-11 (VAL+) or O151-1 (VAL+) - Body ground Always 10 kΩ or higher O146-13 (VA-) or O151-5 (VA-) - Body ground Always 10 kΩ or higher

      Result
      Proceed to OK NG

   
   

   OK

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

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR