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Level 3 Repair
8-15
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8-3-5. Audio Part - Main MIC
Phone MIC
does not work
Check the connection of
MIC300
NO
Resolder or Replace
MIC300
Check the voltage
C316
(V_MIC)=
2.2V
,OK?
YES
NO
Check the UCP200
YES
NO
Check the
components
which
are connected to V_MIC
(L305)
Resolder
L305
Check the
circuit
of MIC PATH
(C313, C314, C315)
YES
NO
Resolder
C313, C314, C315
YES
END