LG GX200 - Page 108

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4.17.3 Checking Flow
Change new
earphone and try
again
Check earphone
work properly ?
Re-soldering or change
U1103 and around
component
try again
Measure Voltage
of TP1,TP2,TP3 status?
NO
YES
YES
NO
Start
Enter the Engineer Mode and
set earphone ON
or Make a cll and insert earphone
Measure Voltage of
TP4,TP5,TP6,TP7 status?
NO
earphone will operate
properly
YES
Re-soldering or change
CPU (U401) and around
component a
and try again
Re-soldering or change
U1101 and around
component
try again
Check earphone
J1101 has output
audio signal?
NO
YES