Ear-Mic Headset Hsor/Hsol Trouble Shooting - LG L240 Service Manual

4.19 Ear-Mic Headset HSOR/HSOL Trouble Shooting

Check the resistance between
HSOR/L & GND of the Headset.
16 0hm
YES
Disassemble the rear case of phone.
Connect the Ear-Mic Headset to the Ear-
Mic Socket.
Check the soldering status.
C113,C114,L202~L205
YES
Did you hear TDMA noise?
NO
Play the any MP3 file.
Check the C313,C314
Is there any signal?
YES
Check the
C118,R134,C115,C117,C1
16,VA101
START
NO
±
15%?
NO
YES
NO
- 89 -
4. TROUBLE SHOOTING
Ear-Mic Headset has a
problem.
Exchange the Ear-Mic
Headset
Re-solder
C113,C114,L202~L205
Re-solder
C313,C314,C320,C321,VA30
1,VA303
U101(ABB) is broken.
Change the board.