LG M6100 Service Manual - Page 79
BT Trouble
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4. TROUBLE SHOOTING 4.7 BT Trouble TEST POINT BT_EN _BT_RST DUBUG_TX Figure 4-7 DUBUG_RX CIRCUIT DIAGRAM BLUETOOTH VBAT 2V8_VBT R401 330 BT_EN C402 15p C403 2.2u C404 0.1u U401 3 VIN VOUT GND BGND 4 2 1 STBY NC 6 5 BH28FB1WHFV C405 2.2u C406 15p (BT ANT -> TRANSFER TO FETCH ANT) ANT401 FEED NC1 NC2 ABA9030152442 ( 903015 ) PCM_TX USC3 2V8_VBT U403 TC7SH08FS 5 1 VCC 3 GND 2 C408 0.1u 4 2V8_VMEM PCM_SYNC8 U404 MAX4717EBC-T C414 0.1u _BT_RST R407 0 C409 NA B4 V+ PCM_EN USC_1 USC_2 R418 10K C2 IN1 A2 IN2 C3 COM1 A3 COM2 B1 GND C4 NO1 A4 NO2 C1 NC1 A1 NC2 PCM_RX PCM_TX USC1 USC2 SPI401 SPI402 SPI403 SPI404 M401 16 RESETB 1 2 PIO0 7 PIO1 PIO2 8 9 PIO3 10 PIO4 PIO5 28 NC 13 SPI_CLK 14 12 SPI_CSB 15 SPI_MOSI SPI_MISO ANT 5 2V8_VBT LBMA-2C67B2 VDD_1_8V 22 21 VDD_DIG VDD_VREGIN 3 4 GND1 GND2 6 GND3 11 25 GND4 UART_TX 27 24 UART_RX UART_RTS 23 UART_CTS 26 PCM_IN 19 PCM_OUT 17 18 PCM_SYNC PCM_CLK 20 L401 22nH C415 15p R412 47 R413 47 R414 47 R415 47 R416 47 R417 47 CLOSED TO BT MODULE C416 2.2u C410 2.2u DEBUG_RX DEBUG_TX PCM_TX PCM_RX PCM_SYNC8 USC0 - 80 -
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