A SERVICE OF

logo

SAMSUNG Proprietary-Contents may change without notice
FlowChartofTroubleshooting
7-15
This Document can not be used without Samsung's authorization
Mic Working
Operate MIC
NG
Check 28pin in UCD501
= High?
NO
YES
YES
Check UCD501
& Neighboring Circuits
MIC+, MIC- pin in
MIC501
Signal ON?
Check UCD501 &
Neighboring Circuits
NO
YES
1, 11 pin in U503
Signal ON?
NO
YES
7,8 pin in
U503
=Low?
Change U503
Check UCD501 &
Neighboring Circuits
Check ZD506, ZD504 &
Change MIC
NO