4. TROUBLE SHOOTING
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4. TROUBLE SHOOTING
CHECKING FLOW
A condition is good?
START
Check of ear_jack condition
NO
YES
FM_radio will
work properly
Check condition of
matching components
(TP1,TP2,TP3)
A condition is good?
NO
YES
Give the additory
solder in
(TP1,TP2,TP3)
Replace J201
Check Bias Voltage
VDD_FMR(C124)
YES
NO
Replace
U102
START
Check of earless condition
Check condition of
CN201 connection
YES
A condition is good?
YES
NO
Replace CN201
NO
Replace U203
A condition is good?
Check Bias Voltage MUIC(U203)
(TP6,TP7,TP8)
Check Input & output
signal at MUIC
YES
NO
Replace U102
A condition is good?
YES
Check Bias Voltage FM LNA
(TP4,TP5)
YES
NO
Replace Q401,Q402
A condition is good?