Figure 22 PWB audio test points
Check microphone using "Hp microphone in Ext speaker out" loop
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 “Hp microphone in Ext speaker out”
4. Select “Loop” as “On”
5. Input sound at microphone port, for example 94dB SPL 1kHz.
6. Check if signal is detected at XEarL/R pads, shown in
Figure PWB audio test points
above.
Figure 23 Test arrangement for microphone
Check earpiece using "Ext microphone in Hp speaker out" loop
Steps
1. Connect phone with Phoenix.
RH-99; RH-100; RH-105; RH-106
Baseband troubleshooting
Page 4 –16 COMPANY CONFIDENTIAL Issue 2
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