Bluetooth Trouble Shooting - LG KE590 Service Manual

4.3 Bluetooth Trouble Shooting

Set BT Test mode ON
Check BT Antenna Status
(Refer to figure 1)
Check 1.8V from ABB
(Refer to figure 2)
(Refer to figure 3)
Check BT_CLK_REQ
(Refer to figure 4)
Check BT_RF_OUT
(Refer to figure 5)
Re-Download S/W
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YES
NO
YES
NO
YES
NO
Check 26MHz
YES
NO
YES
NO
YES
YES
Replace BT Module
4. TROUBLE SHOOTING
In Engineering mode(2945#*#)
Set RF test mode and then BT ON
Replace BT Antenna
Check ABB(U103)
Check DCXO or
MAIN Transceiver
Check BT Module
Check FB100(Banun Filter)
YES
Check DBB(U104)
- 57 -
& Analog switch
LGE Internal Use Only