LG -P990 Service Manual page 104

4.8.2 Wifi/BT/FM Signal Path
Wifi SDIO to AP20
BT PCM & UART to AP20
FM L/R to WM8994
LGE Internal Use Only
Wifi Signal
BT Signal
FM Signal
ANT
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4. TROUBLE SHOOTING
FM ANT via
Earphone GND
Only for training and service purposes