3360319 - N12 POOR RADIO RECEPTION

The car radio works normally, but the station reception is not the same as before.
Results of the tests
0PRELIMINARY CHECKAll OKProblems metOperation
Check that there are no faults inside the radio. See Test   5570TA  Check radio system operation Continue to Step 1CAN fault detectedRestore correct operation See   E3510  RADIO
Internal modules fault detected.Replace radio
Internal EEPROM fault detected Replace radio
Display segments fault detectedReplace radio
1INTERNAL AMPLIFIER OPERATION CHECKAll OKProblems metOperation
Check that the fault is not present for other audio sources. (Listen to an audio CD in the player)Continue to Step 5Poor audio reproductionReplace radio Op.   5570T80 
2RECEPTION ZONE CHECKAll OKProblems metOperation
Check that the problem does not occur in poor reception areas, when moving away from these areas the reception should improve substantially. It is also possible, if the reception area is very bad, that attempts to switch between frequencies may seem like pausesContinue to Step 3Poor receptionDeactivate the A.F. function
3AMPLIFIED AERIAL CHECKAll OKProblems metOperation
Check the reception system by See Test   5570TB  Check radio aerial reception

Checking the following in order:

  • aerial voltage
  • aerial status - short circuit or open circuit.
Continue to Step 4Aerial voltage not correct.ga Continue to Step 5
Aerial short circuited.Continue to Step 5
Aerial with open circuit. Continue to Step 5
4AMPLIFIED AERIAL CHECKAll OKProblems metOperation

Check the reception system in order:

  • continuity of the coaxial aerial cable
  • aerial amplifier and actual amplifier power supply See   E3510  RADIO
Continue to Step 5Aerial cable faultyRenew or replace the aerial cable
Amplifier supply leads faultyRepair or replace the supply lead
Aerial amplifier faulty Replace the aerial amplifier
5CHECK ON CORRECT OPERATIONAll OKProblems metOperation
Check that the fault is no longer presentEnd of diagnosis