LG KM710 Service Manual - Page 112
Usb Boot Select, Analog Switch, Last Call
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7. CIRCUIT DIAGRAM 1 A B C D 2 3 4 5 6 7 8 9 10 A ANALOG SWITCH VBAT HSOUTL HSOUTR HSMICBIAS R300 3K HSMICIP C307 0.1u R301 C300 2.4K 120p C301 10u C304 27p C305 27p FB300 10p C306 270nH L302 FM_ANT UART3_RX BT_RX C308 120p L303 100nH VA300 CN300 21 U300 NLAST9431MT VRIO VRIO EVLC14S02050 19 1 14 13 NC_D1 VCC NO_A0 15 COM_A 16 VRIO VRIO VBAT 2 R303 47 3 UART_RXD 1 2 NC_A1 12 COM_D 11 UART3_RTS R302 U301 1 6 JACK_TYPE FB301 4 VCHG_IN 5 B BT_NRST BT_TX UART3_TX SAB 3 NO_B0 4 COM_B NO_D0 SCD 10 NC_C1 9 BT_RTS 220K U302 5 4 VIN- 1 VCC HOOK_EN S B1 2 VCC GND 5 3A B0 4 R304 1K R305 100K R306 100K FB303 FB302 6 7 8 HOOK_DETECT OUT GND 3 VIN+ FSA4157L6X JACK_DETECT 9 COM_C NO_C0 GND NC_B1 7 8 5 6 2 LMV7291MGX-NOPB R308 10K LAST CALL VA301 EVLC14S02050 PWON 10 11 12 FB304 13 R307 100K BT_NRST : 0 = UART, 1 = BT VRIO VBAT UART3_DSR VBUS_IN C309 1u C310 1u C311 1u UART2_TX UART2_RX FB305 14 15 16 17 FB306 18 UART_TXD BT_CTS UART3_CTS R309 20 VBAT 22 100K USB BOOT SELECT UART_TXD UART_RXD C312 0.1u MM_USB_EN R310 100K FSUSB30UMX U303 10 SEL HSD1+ 1 VRIO C U304 R311 9 VCC HSD2+ 2 16 15 100K 8 _OE 3 D+ V+ 13 NO1 14 NC4 COM1 BGND 17 VBUS R312 100K R313 20K 2 R314 10K 3 Q300 2SC5585 1 USB_BOOT_SEL REMOTE_ADC JACK_DETECT 1 NC1 2 3 IN1_2 4 NO2 COM2 COM4 12 NO4 11 10 IN3_4 9 NC3 USB_BOOT_SEL MM_USB_DM MM_USB_DP 7 HSD1- GND 4 6 5 HSD2- D- COM3 8 NO3 GND 5 NC2 6 7 R807 REMOTE_INT DG2018DN_T1_E4 47K R806 200K ABB_USB_P ABB_USB_N USB_BOOT_SEL : 0 = UART, 1 = ABB USB(DL) C313 0.1u R315 100K ESD9X5.0ST5G INSTPAR INSTPAR ESD9X5.0ST5G ZD300 ZD301 JACK_DETECT : 0 = REMOCON, 1 = UART MM_USB_EN : 0 = ABB/DBB, 1 = MM USB D E 1 2 3 4 5 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 113 - LGE Internal Use Only
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