Navigation System Cannot Call In A Certain Place

INSPECTION PROCEDURE

CHECK SURROUNDING CONDITIONS

CHECK RECEPTION

CHECK RECEPTION

INSPECTION PROCEDURE

1. Check if a cellular phone can make calls in a certain place.
   

   OK:

   It can make calls.
   

1. Check if the reception level is the same on a cellular phone and the multi-display.
   

   OK:

   Reception level is different.
   

1. Place a cellular phone close to the multi-display.
   

2. Check if the reception level becomes the same on the cellular phone and the multi-display.
   

   OK:

   Reception level becomes the same.
   

   HINT:

   Multi-display receives different strength radio waves depending on the radio wave strength transmitted by the cellular phone.