Ear-Mic Headset Hsor/Hsol Trouble Shooting - LG KE520 Service Manual

4. TROUBLE SHOOTING

4.16 Ear-Mic Headset HSOR/HSOL Trouble Shooting

Check the resistance between
HSOR/L & GND of the Headset.
Disassemble the rear case of phone.
Connect the Ear-Mic Headset to the Ear-
Mic Socket.
Check the soldering status
C116,C117,L100,L101,C121,C122,
R306,R307,FB300,FB301
The main_PCB has a
Change the main_PCB.
LGE Internal Use Only
START
±
16 0hm 15%?
YES
Is it O.K?
YES
Check the soldering
Pin #4,#5 of CN300
YES
Problem,
- 102 -
NO
Ear-Mic Headset has a
problem.
Exchange the Ear-Mic
Headset
Re-solder
NO
C116,C117,L100,L101,C121,C12
2,R306,R307,FB300,FB301
NO
Resolder Pin #4,#5 of
CN300
FB301
FB300
R307
R306
L101
C117
C121
C116
L100
C122
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