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Trouble Shooting Guide, Advanced
If the voltage on pin 2 is wrong. Fig. 24.2. measure the voltage on R651 ~3.0V at 440 Hz
squared wave on the side against the processor and ~0.9V at same frequency on the other side.
If the voltage is incorrect on the side against the processor, the fault can be due to the solving or
the component.
If the voltage is correct on D600, the fault can be due to R651, V606, V605, C619 or C653, but
usually it is the buzzer.
4/00021-3/FEA 209 544/18 B
106(121)
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