Speaker/Receiver Trouble - LG C3600 Service Manual

4. TROUBLE SHOOTING
Earphone sending path problem
No
Voltage at
3 Insert earphone Replace U201
R202=2.5V?
Yes
No
Check soldering R202
Voltage at
C206=2.3V?
AUXIN AUXIP
Yes
No No
Check soldering
Voltage at Check soldering Voltage at
R206=1.2V? R206,R203,C204 C212=2.0V? R214，C212
Yes
Yes
Replace
4
main board

4.12 Speaker/Receiver Trouble

Figure 4-19
26