4. TROUBLE SHOOTING
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Check of ear_jack condition
Check Bias Voltage
TP3, TP4
Replace U101
No
A condition is good?
Give the additory
solder in TP1, TP2
No
Yes
Yes
FM_radio will work properly
Check condition of
matching components
(TP1, TP2)
A condition is good?
Replace J401
No
Yes