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Only for training and service purposes
4. TROUBLE SHOOTING
4.15. Ear-Mic Headset HSOR/HSOL Trouble Shooting
Ear-Mic Headset has a problem.
Exchange the Ear-Mic Headset
NO
Check the resistance between
HSOUTR/L & GND of the Headset.
16 0hm 15%?
Re-solder
FB304,FB305,IC200,C304,C305,
C235,C236,R225,R226
Disassemble the rear case of phone.
Connect the Ear-Mic Headset to the Ear-Mic
Socket.
START
YES
NO
The main_PCB has a
Problem,
Change the main_PCB.
YES
Check the soldering status
FB304,FB305,IC200,C304,C305,
C235,C236,R225,R226
Is it O.K?
CN301
FB304
FB305
C304
C305
IC200
R225
R226
C235
C236