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Checking Flow
START
Resolder J200
Does the audio
profile of the phone
change to the
earphone mode?
YES
Set the audio part
of the test Equipment
to echo mode
NO
Can you hear
your voice from
the earphone?
YES
Earphone will work properly
NO
Level at
JACK_DETECT signal
is low
YES
Change the earphone
and try again
Can you hear
your voice from
the earphone?
YES
Of HEADSET_MIC_P
- 77 -
NO
Resolder R123, R216
or Replace J200
Can you hear
NO
the sound from
the earphone?
YES
Voltage level check
signal.
YES
Check
U200 & U205
works properly
YES
Change main board
4 . TROUBLE SHOOTING
Voltage level check
Of HEADSET_SPK_OUT_P
& HEADSET_SPK_OUT_N
signal
NO
NO
Resolder components
NO
Resoler U200 & U205
YES
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