Ear-Mic Hook Detection Trouble Shooting - LG CE110 Service Manual

4. TROUBLE SHOOTING

4.12 Ear-Mic Hook Detection Trouble Shooting

Disassemble the rear case of phone.
Connect the Ear-Mic Headset
to the Ear-Mic Socket of phone.
Press the HOOK Button.
Is the status of VA300 LOW?
Check the soldering status
Of L302,VA300
U101(DBB) is broken.
LGE Internal Use Only
START
YES
YES
Change the board.
- 88 -
NO
Ear-Mic Headset has a
problem.
Exchange the Ear-Mic
Headset
NO
Re-solder L302,VA300
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Only for training and service purposes
VA300
L302