Bluetooth Trouble Shooting - LG GD330 Service Manual

4. TROUBLE SHOOTING

4.3. Bluetooth Trouble Shooting

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Set BT Test mode ON
YES
Check BT Antenna Status
YES
Check 1.8V from ABB
YES
Check 26MHz
YES
Check BT_CLK_REQ
YES
Check BT_RF_OUT
YES
Re-Download S/W
LGE Internal Use Only
In Engineering mode(1809#*330#)
6(Eng Mode) 4(BT Testing)
2(RF test) or Select & Push RF test
NO
Replace BT Antenna
NO
Check U100
NO
Check DCXO or
U401
NO
Check U403
NO
Check FL403
YES
Replace BT Module
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YES
Check DBB(U103)
& Analog switch
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