N12 POOR RADIO RECEPTION - Alfa - 147 - eLearn

3022686 - N12 POOR RADIO RECEPTION

The radio comes on normally, but the station reception is not excellent.

The conditions in which the radio is tested should allow excellent reception: check that therre are no tall buildings or trees which could impair reception

0	PRELIMINARY CHECKS	All OK	Problems met	Operation
		Results of the tests
	Check the condition of the aerial: it should not be bent or broken.	Continue to Step 1	Aerial defective	Replace the aerial
1	COAXIAL CABLE CHECK	All OK	Problems met	Operation
	Check: Continuity and insulation of aerial coaxial cable.	Continue to Step 2	Defective Component	Replace the aerial coaxial cable
2	RADIO CHECK	All OK	Problems met	Operation
	Tune the radio into a broadcaster. Check: Correct reception of broadcaster selected.	Continue to Step 3	Tuning not correct/poor broadcaster signal/other adjacent stations	Continue to Step 3
3	RADIO CHECK	All OK	Problems met	Operation
	Tune the radio into other broadcasters in the area which have a strong radio signal and which are received normally on other radios. Check: Correct reception of broadcaster selected by carrying out a road test.	Continue to Step 4	Radio defective	Repair or replace the radio.
4	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists

The radio comes on normally, but the station reception is not excellent.

The conditions in which the radio is tested should allow excellent reception: check that therre are no tall buildings or trees which could impair reception

0	RECEPTION ZONE CHECK	All OK	Problems met	Operation
		Results of the tests
	Check that the problem is not caused by an unsuitable choice of filters (e.g. AF, PTY, TA, etc.) or occurs in poor reception areas, when moving away from these areas the reception should improve considerably. It is also possible, if the reception area is very bad, that attempts to switch between frequencies may seem like pauses.	Continue to Step 1	Poor or no reception due to unsuitable choice of filters.	Deactivate the selection involved.
1	INTERNAL AMPLIFIER OPERATION CHECK	All OK	Problems met	Operation
	Check that the fault is not present for other audio sources. (Listen to an audio CD in the connect)	Continue to Step 2	Poor audio reproduction	See table N11 RADIO CANNOT BE HEARD, IS HARD TO HEAR
2	ERRORS CHECK	All OK	Problems met	Operation
	With the Examiner in the 'Reading Parameters' ambient, check that there are no errors or that the following one or more errors are not present for the Connect Node: Front speaker right and/or left Rear speaker right and/or left Rear speaker AM/FM aerial. Internal error.	Continue to Step 4	Error for the front speaker(s).	See table N11 RADIO CANNOT BE HEARD, IS HARD TO HEAR
			Error for the rear speaker(s).	See table N11 RADIO CANNOT BE HEARD, IS HARD TO HEAR
			AM/FM aerial error.	Continue to Step 3
			Internal error	Replace the Connect Op. 5580P20
3	AMPLIFIED AERIAL CHECK	All OK	Problems met	Operation
	Check, in order: continuity of the coaxial aerial cable aerial amplifier and actual amplifier power supply See E3510 RADIO	Continue to Step 5	Aerial cable faulty	Restore the correct operation of the aerial lead
			Amplifier supply leads faulty	Renew or replace the supply wiring
			Aerial amplifier faulty	Replace the aerial amplifier
4	COMPONENT CHECK	All OK	Problems met	Operation
	Check the condition of the aerial (three functions) located on the roof	Continue to Step 5	Aerial faulty	Replace the aerial
5	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present	End of diagnosis	Fault persists	Replace the Connect module Op. 5580P20