Figure 35 Test arrangement for external microphone
Figure 36 external microphone troubleshooting flow
Headset speaker troubleshooting
Steps:
1 Connect phone with Phoenix.
2 Open “audio test” window from “Testing –> Audio test”, as shown in Figure Phoenix audio test window
above.
3 Select “Ext microphone in Ext speaker out”.
4 Select “Loop” as “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.
RM-704
BB Troubleshooting and Manual Tuning Guide
Page 3 – 32
COMPANY CONFIDENTIAL
Issue 1
Copyright © 2011 Nokia. All rights reserved.
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