Audi Workshop Service and Repair Manuals

The TV system is equipped with a special function for visually monitoring the performance of the aerials.
As soon as this function is started up, a check of the basic functions of the television system is initiated.

To invoke the test function,

• ‒ activate television operation and then search for a television transmitter which will provide good reception.

=> Radio navigation system operating instructions

• ‒ Simultaneously press AM button and TONE button.

Display on screen:

• Aerial monitoring function
• Aerial -1-, TV -R55 with
  ON and OFF function
• Aerial -2-, TV -R56 with
  ON and OFF function
• Aerial -3-, TV -R57 with
  ON and OFF function
• Aerial -4-, TV -R58 with
  ON and OFF function

Note:

The image received from the aerial currently selected can now be seen on the screen.

• ‒ The remote power supply to the respective TV aerial amplifier can be switched on or off using the right rotary control.
  The quality of the image must deteriorate noticeably when the remote power supply is switched on.
• ‒ Press RETURN to exit the function.

Test options:

• ◆ Information concerning the functionality of the respective aerial amplifier can be obtained by switching on and off (ON or OFF position) the remote power supply to the aerial amplifier in question.
• ◆ The CAN bus is tested with regard to hardware and software (partial test) by operating the TV diversity receiver via the Audi RNS.
• ◆ The main functions of the television receiver are activated and the audio/video link guaranteed by commissioning the TV system, selecting a channel and invoking the video text.
• ◆ Should a fault arise (no change in the image), the only way to ascertain whether there is an open circuit in the aerial cable or the TV aerial amplifier is defective is to check the voltage (10V) at the coaxial cable (inner conductor) on the amplifier side.