Lenovo A328 Service Manual page 16

LENOVO
Microphone does not work
YES
Check MIC circuit
component visually
YES
Check microphone
OK?
YES
Is the bias Voltage 2.4V
measured from MICP
YES
Check the MIC path component
Are the component in place
and of correct value/type
YES
Check PMIC 、 KB
connector soldered again or
replace
NO
NO
NO
NO
NO
NO
YES
board
Soldered again or replace
damaged component OK?
Soldered again or replace
damaged component OK?
Check BBIC Soldered again or
replace
Replace damaged/missing
component
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