LG KE990 Service Manual - Page 152

7. CIRCUIT DIAGRAM 1 2 3 4 5 6 7 8 9 10 11 12 KMS-518 SW100 C100 180p C103 180p TX_IP TX_IM G1 A C G2 A ANT100 ANT101 ANT102 L100 0 L101 0 C102 C104 NA NA PQ C101 120p L102 22nH ANT 11 B ANT_SEL0 ANT_SEL1 VREG_RF_SMPS 19 20 VC1 VC2 21 VDD GSM850_RX1 1 2 GSM850_RX2 3 GSM900_RX1 4 GSM900_RX2 C113 C114 1000p 1000p C195 1000p 9 GND1 10 GND2 12 GND3 13 GND4 14 GND5 16 GND6 18 22 GND7 GND8 5 GSM1800_RX1 GSM1800_RX2 6 GSM1900_RX1 7 GSM1900_RX2 8 15 GSM1800_1900_TX 17 GSM850_900_TX NC2 24 NC1 23 LMSP43QA-538 FL100 850GSM 22nH C719 L199 27nH L198 27nH L197 47nH EGSM L109 NA C718 NA L111 NA L110 NA DCS L103 6.8nH L105 6.8nH L104 18nH PCS L106 6.8nH L108 6.8nH L107 12nH DCS_PCS_TX GSM_TX TX_ON DAC_REF 29 WLNA_OUT 34 WMIX_INP 35 WMIX_INN C106 C108 C116 12p SSBDT_RTR 46 DA_HB1_OUT 6p 44 DA_HB2_OUT 5p 43 DA_LB1_OUT 42 DA_LB2_OUT 51 TX_IP TX_IN 50 TX_QP 53 TX_QN 52 TCXO 7 5 V_TUNE1 C111 3300p VTUNE-Connected directly to GND 24 12 56 RF_ON RX_IP 13 54 VCNTRL DAC_REF U100 RX_IN 10 R100 14 SBDT RTR6275-CHARTEREDRRXX__QQNP 11 12K (1%) 3 R_BIAS1 PWD_DET_IN 40 27 R_BIAS2 R101(1%) VDDA1 4 680 30 GCELL_INN 31 GCELL_INP 32 EGSM_INP 33 38 EGSM_INN 39 DCS_INP DCS_INN 6 VDDA2 8 VDDA3 9 VDDA4 15 VDDA5 VDDA6 16 19 VDDA7 36 GPCS_INP VDDA8 20 37 GPCS_INN VDDA9 28 VDDA10 49 VDDA11 48 26 WLNA_IN VDDA12 47 VDDA13 45 C197 VDDA14 41 22p 21 55 TEST 17 OPEN VDDM 18 V_TUNE2 1 2 GND1 22 GND2 23 GND3 GND4 25 GND5 57 PGND C119 0.1u C120 0.1u C121 0.1u C122 0.1u C123 0.1u C124 0.1u C107 180p C110 180p R104 5.1 R107 2.7 R102 0 22u C118 C126 22p C127 100p C128 22p C125 1u A TX_QP TX_QM RTR6275_TCXO RX_IP RX_IM RX_QP RX_QM VREG_RF_SMPS B VREG_SYNTH_2.6V 10 R109 C112 C ANTENNA SWITCH MODULE LOGIC ANT_SEL0 ANT_SEL1 GSM 850/GSM 900 TX GSM 1800/GSM 1900 TX GSM 850 RX GSM 900 RX HIGH LOW LOW LOW LOW HIGH LOW LOW GSM 1800 RX LOW LOW D GSM 1900 RX LOW LOW WCDMA LOW LOW GSM C717 4.7p C136 6.8p L112 15nH C138 NA C146 2.7p C142 5.6nH L113 5.6nH 17 GND8 16 GND7 15 DCS_PCS_OUT 14 GND6 DCS_PCS_IN 1 13 GND5 BS 2 12 VCC 11 GND4 U101 TQM7M5003 3 TX_EN 4 VBATT 10 GND3 5 GND1 9 GSM_OUT VRAMP 6 8 GND2 GSM_IN 7 VREG_MSMP_2.7V GSM_PA_BAND GSM_PA_EN C137 1u C135 33u +VPWR R117 2.2K C143 68p GSM_PA_RAMP 32 G2 G1 IN O1 G3 1 45 EFCH836MTDB1 FL101 GSM_PA_BAND MODE LOW HIGH GSM850/900 DCS/PCS R112 100 R111 68 10 dB R113 100 DCS_PCS_TX R114 68 R118 100 10dB R119 100 GSM_TX NA C199 22p VTUNE-Connected directly to GND C132 C133 C134 0.01u 22p 1000p C131 100p C129 0.1u 22u C130 near to 48pin VREG_RF_SMPS C SMPS circuit for RF D E E FM RADIO F VREG_TCXO_2.85V C139 0.1u C140 1000p TCXO X100 OUT GND 3 2 4 VCC VCONT 1 19.2MHz R115 100ohm C141 0.01u TRK_LO_ADJ VREG_BT_2.85V G TCXO_PM C144 1000p R120 100K C145 1000p RTR6275_TCXO C147 1000p C148 8200p U102 TC7SH04FS TCXO_BT H Rev. 1.1 VREG_MMC_3.0V FM_INTX FM_BUSEN 100K R122 10K R121 C150 C151 0.1u 0.01u L120 47nH TP102 C158 1u U103 A1 CPOUT A2 LOOPSW A3 LO1 A4 LO2 A5 VCCVCO A6 VCC B1 SWPORT B2 INTX B5 AGND B6 RFIN1 C1 FREQIN C2 BUSEN TEA5766UK E6 VAFR E5 VAFL E4 MPXOUT VREFDIG E3 CLOCK E2 DATA E1 D6 TMUTE D5 ISS D3 DGND2 DGND1 D2 VDD D1 C6 RFIN2 RFGND C5 TP100 C157 TP101 0.1u FM_AUDIO_R F FM_AUDIO_L VREG_MSMP_2.7V I2C_SCL I2C_SDA G SLEEP_CLK TP103 C171 56p C172 27p C166 100p L127 100nH FM_ANT H 1 2 3 4 5 6 7 8 9 10 11 12 Copyright © 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 153 - LGE Internal Use Only