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Marantz 2220 Service Manual page 8

Stereophonic receiver
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12. Audio Adjustment
2. Connect an oscilloscope across the speaker terminals. Apply an audio signal of 1 KHz to the
AUX jacks and increase the audio signal until the audio output on the scope begin to start
clipping. Adjust the trimming resistor R723 for equal and symmetrical clipping. For the other
channel adjust the R724.
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Figure 1. Dial Stringing

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