AUDIO AND VISUAL SYSTEM Noise Occurs

INSPECTION PROCEDURE

PROCEDURE

1. CHECK NOISE-INCLUDED DEVICE

   
   

   1. Check noise-included device.

      
      

      1. Operate the radio receiver assembly to check the device from which the noise is heard.

         Standard:

         A	B
         Noise occurs at the radio mode only.	Noise occurs at any node.

   
   

   (B)

   CHECK OF SPEAKER INSTALLATION Click here

   (A)

2. CHECK WHEN THIS HAPPENS

   
   

   1. Check then this happens.

      
      

      1. Check that in what condition (place) noise occurs.

         Standard:

         A	B
         Noise occurs at any place.	Noise occurs at a particular place.

   
   

   (B)

   WAVE DISTURBANCE

   (A)

3. CHECK OPTIONAL COMPONENT

   
   

   1. Check optional component.

   2. Reference:

      
      

      1. The radio is equipped with noise prevention system that does not work against the regular use of the radio, thereby excessively large noise cannot occur in the radio. If large noise occurs, check whether or not the earth on the antenna installation part and the proper noise-prevention equipment are all installed, and whether or not the improper wiring is held.

   
   

   OK

   EFFECT FROM OPTIONAL COMPONENT

   NG

4. CHECK ANTENNA PLUG BY UNINSTALLATION

   
   

   1. Check for noise by removing antenna plug.

      
      

      1. With the antenna plug being removed from the radio receiver assembly, operate the radio receiver assembly again to see if the noise occurs.

         Standard
         Noise occurs.

   
   

   OK

   CHECK AND REPLACE RADIO RECEIVER ASSEMBLY

   NG

5. CHECK ANTENNA SYSTEM

   
   

   NG

   REPLACE W/HOLDER ANTENNA ASSEMBLY

   OK

   REPLACE RADIO RECEIVER ASSEMBLY

6. CHECK OF SPEAKER INSTALLATION

   
   

   NG

   INSTALL THE SPEAKER PROPERLY

   OK

   IDENTIFICATION OF NOISE PRODUCTION CAUSE