8.7.2. Send
Check the soldering.
Resolder or replace parts as needed.
Related parts:
[Main PCB] R570,C581,IC410
Headset
NO
END
Related parts:
[Main PCB] CN400,L461,C576,R566,R569,
C571,C580
[Ope PCB] CN160,C166,L160,D162,C165
Flat Cable (Between Main PCB and Ope PCB)
NO
YES
Confirm the voltage between TP:HESMIN and
TP:UART_GND.
Is it about 2.4V?
Related parts: IC410,C442,R238,C443
NO
YES
Confirm the voltage between either end of
C443 (MICBIAS).
Is it about 2.5V?
YES
Confirm the waveform of sending sound from
heaset microphone between TP:HESMIN and
TP:UART_GND during a call.
Can you see the waveform of sending sound?
Insert a headset
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