External microphone 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 sound at AV mic port, for example 94dB SPL 1kHz.
6 Check if signal is detected at HS_EAR_L/R pads, shown in Figure PWB audio test points above.
Figure 31 Test arrangement for external microphone
Figure 32 external microphone troubleshooting flow
RM-761; RM-799; RM-800
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 – 29
Copyright © 2011 Nokia. All rights reserved.
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