LG KE600 Service Manual - Page 100
FM Radio trouble
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5. Trouble shooting 5.14 FM Radio trouble Check Points -Ear_mic_set is correctly operated as FM radio antenna (When user uses the FM radio function, Ear_mic_set must be connected in phone) -A condition of FM_Radio module soldering -FM_Radio signal is flowed correctly -Power and clock signals are supplied in U303 FM_INTn TP310 C326 L303 24p 100nH C368 NA D308 PG05DBTFC 2V85_IO2 VBAT TP311 TP312 100p C332 R328 0 R329 NA GPIO3 19 GPIO2 20 GPIO1 21 23 22 GND6 NC2 NC1 PGND 24 25 2V72_IO 1 2 GND1 3 4 FMIP RF_GND 5 FMIN GND2 6 GND3 U303 SI4701 18 VA 17 GND5 LOUT 16 15 ROUT 14 GND4 VD 13 12 VIO 11 RCLK 10 SDIO _RST _SEN SCLK 8 9 7 CLK32K 2V72_IO R336 10K U305 VCC A Y FM_RESETn SCL SDA C338 0.1u GND MC74VHC1GT50DFT2 -> MC74VHC1GT50DF1G R337 0 2V72_IO C337 220n FM_L FM_R C335 4.7u C336 22n Checking Points R337 Figure 30 Bluetooth circuit D308 L303 C326 C332 U303 C328 C337 U305 Figure 20. FM_Radio Part - 101 - CN302
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