Table of Contents
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Checking Flow
Does the audio profile
of the phone change to
the earphone mode ?
YES
Earphone
Acoustic
Does waveform at
B507&B509 fluctuate ?
YES
Does waveform at
C534&C535
fluctuate ?
YES
Change another Ear-Mic set
and Try again .
Start
NO
NO
NO
Check U200 and component
status around U200
72
Replace U305 or Change the
PCB .
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