Nokia RM-506 Service Manual page 121

RM-505; RM-506
BB Troubleshooting and Manual Tuning Guide
Figure 39 Single-ended output waveform of the Ext_microphone in Int handsfree out loop measurement when speaker is
External output from AV
External output from AV (acoustic input)
Issue 1
connected (measured at speaker pads). No filter is used.
Figure 40 Single-ended output waveform of the AV Mic to AV Ear loop.
Figure 41 Single-ended output waveform of the HP Mic to AV Ear loop.
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