Headset Speaker Troubleshooting - Nokia RM-761 Service Manual

Headset speaker troubleshooting

Steps:
1 Connect phone with Phoenix.
2 Open "audio control" window from "Testing –> Audio control", as shown in Figure Phoenix audio control
window above.
3 Select "AV mic to AV ear".
4 Set "Activate" on.
5 Input signal to HS_MIC/GND pads, as shown in Figure PWB audio test point above, for example 100mVpp,
1kHz.
6 Check if sound is heard in headset.
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Figure 33 Test arrangement for headset speaker
Figure 34 external earpiece troubleshooting flow
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