LOUDSPEAKER OPERATION CHECK

Check 5570TF

Turn on the radio and tune to a station or insert an audio CD

Position the red and black voltmeter probes on pins B1 and B2 and then on B3 and B4, B5 and B6 and lastly B7 and B8 of the radio audio output.

Using the Examiner, select a 20 Volt full scale deflection and 5 second time base, then press the Start button. The values on the image that appears, evaluated with a tolerance of around 20%, should be similar to the following image:

Amplifying the graphic trend of the voltage, the signal displayed should be similar to the following:

The presence of this graph, displayed at the radio output, indicates that it is operational.

If the audio signal detected is as follows, the radio or wiring is faulty:

Radio connector