LG Nexus 5 Service Manual
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3. TROUBLE SHOOTING - 41 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only BOT U1000 Separator TP2 TP1 3.4.2 U1000 (Low Band) Check the supply voltage and control level for FL1018/U1000 EAT61914101 U1000 RF1492A 21 20 7 8 6 9 5 10 4 3 11 2 12 1 19 18 17 16 15 14 13 TRX1NC2NC3NC4GND2TXHBTXLB ANT TRX2 NC1 TRX3 TRX6TRX5 SCLK TRX4 SDATA GND1 VIOVDD GND3GND4 10p C1023 R1015 0 +1V8_VREG_S3A_RF+2V95_VREG_L16 L1013 DNI C1016 33p R1016 0 100p C1025 GND RFFE2_DATA RFFE2_CLK TRX_ANT1 TRX_B17 TRX_B5_B26 TX_GSM_LB TRX_B8 4/4_QCT_R-013551 TP2 TP1 TP3
3. TROUBLE SHOOTING - 42 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Check TP1 TP1 > 2.95V Check the Power ON No Yes Check TP2 TP2 > 1.8V TP3 Signal? Check the PM8941 Check the FL1018 Check the U1000 No No Yes Yes Check TP3 RF Path Open
3. TROUBLE SHOOTING - 43 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 3.5 Checking RF Block START Check XO (19.2MHz) Block Refer to 4.3 Check the FL1018/U1000 Refer to 3.4 Check Tx/ Rx Level Re-Download & Cal. Change the Board
3. TROUBLE SHOOTING - 44 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only BOTTOP 3.5.1 Checking XO (19.2MHz) Block Refer to 3.3 3.5.2 Checking the FL1018/ U1000 Refer to 3.4 3.5.3 Checking RF TX Level 3.5.3.1 WCDMA, LTE B1 TP1 TP3 TP2
3. TROUBLE SHOOTING - 45 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only C1114100pEAG63293301 20549-001E SW1003 4 3 2 1 ANTCOMMON G3G4 22p C1071 W_FL2-R-SMT-1_80 SW1002 EAG63412001 G1 G2ANTG3 ECA30240001 FL1014 LDJ18829M24AD011 IN 1 Termination_Port 4GND1 2GND2 5OUT 3 Coupling 6 L1048 100n R1011 49.9 DNI L107 3 L1074 DNI TRX_ANT2 CPL_CPL 13.04.25 changed L1001 12n C1102100p1 2 C1018 33p33p C1020C1017 33p L1014 DNIEAM62691501 FL1002 LFL18829MTCRD6274 3 5 2 6 1 ING3G1NCOUTG2 1n C1103 L1016 DNI 0 R1002 DNI L1012 VPA_BATT DNI C1021 3.9p C1006 DNI L1015 L1010 DNIC10221.5n 3p C1015 DNI L1006R1001 49.9 C1012 DNI L1000 DNI33p C100233p C1003 DNI L10038.2n L1005 VPA VPA_GSM +1V8_VREG_S3A_RF 100p C1000 C1011 100n33p C1013C1014 33p L1008 DNI U1001EAN62765801ACPM-7600-TR1 43 42 41 40 39 37 38 35 36 34 30 31 32 33 7 2 1 6 5 4 3RFIN_B26RFIN_B5_B8GND1VIO RFIN_B1_B2RFIN_B3_B4 GND2 RFOUT_B4RFOUT_B2RFOUT_B5_B26GND14 RFOUT_B3GND15RFOUT_B1GND16CPL_OUTGND17GND18GND19GND20PGND C100710u 1n C1117R1023 5.1 0 R102027n L1009 TX_OUT_MB3 TX_OUT_LB4 TX_OUT_MB2 TX_PA_OUT_B3 TX_PA_OUT_B2_B25 TX_PA_OUT_B4 TX_PA_OUT_B1 B2/B25 B4 B3 B5, B6, B19, B26, BC0, BC10 B3, B4 Closed to PA BC1, B1, B2, B25 B14/4_QCT_R-013545 4/4_QCT_R-013547 RC snubber TP3 TP1 TP2
3. TROUBLE SHOOTING - 46 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only First, Check the conducted Max. Power using the RF Connector Check the FL1018 Check TP1 Over 21 dBm?RF TX Level is OK Yes No Check U2004 (WTR1605L) Check TP2 Over 21 dBm?Check FL1007 (B1 Duplexer) Yes No Check TP3 Over -3 dBm?Check U1001(PAM) Yes No
3. TROUBLE SHOOTING - 47 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only BOTTOP 3.5.3.2 WCDMA B2 TP1 TP3 TP2
3. TROUBLE SHOOTING - 48 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only C1114100pEAG63293301 20549-001E SW1003 4 3 2 1 ANTCOMMON G3G4 22p C1071 W_FL2-R-SMT-1_80 SW1002 EAG63412001 G1 G2ANTG3 ECA30240001 FL1014 LDJ18829M24AD011 IN 1 Termination_Port 4GND1 2GND2 5OUT 3 Coupling 6 L1048 100n R1011 49.9 DNI L107 3 L1074 DNI TRX_ANT2 CPL_CPL 13.04.25 changed TP1 L1001 12n C1102100p1 2 C1018 33p33p C1020C1017 33p L1014 DNIEAM62691501 FL1002 LFL18829MTCRD6274 3 5 2 6 1 ING3G1NCOUTG2 1n C1103 L1016 DNI 0 R1002 DNI L1012 VPA_BATT DNI C1021 3.9p C1006 DNI L1015 L1010 DNIC10221.5n 3p C1015 DNI L1006R1001 49.9 C1012 DNI L1000 DNI33p C100233p C1003 DNI L10038.2n L1005 VPA VPA_GSM +1V8_VREG_S3A_RF 100p C1000 C1011 100n33p C1013C1014 33p L1008 DNI U1001EAN62765801ACPM-7600-TR1 43 42 41 40 39 37 38 35 36 34 30 31 32 33 7 2 1 6 5 4 3RFIN_B26RFIN_B5_B8GND1VIO RFIN_B1_B2RFIN_B3_B4 GND2 RFOUT_B4RFOUT_B2RFOUT_B5_B26GND14 RFOUT_B3GND15RFOUT_B1GND16CPL_OUTGND17GND18GND19GND20PGND C100710u 1n C1117R1023 5.1 0 R102027n L1009 TX_OUT_MB3 TX_OUT_LB4 TX_OUT_MB2 TX_PA_OUT_B3 TX_PA_OUT_B2_B25 TX_PA_OUT_B4 TX_PA_OUT_B1 B2/B25 B4 B3 B5, B6, B19, B26, BC0, BC10 B3, B4 Closed to PA BC1, B1, B2, B25 B14/4_QCT_R-013545 4/4_QCT_R-013547 RC snubber TP2 TP3
3. TROUBLE SHOOTING - 49 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Check the FL1018 Check TP1 Over 21 dBm?RF TX Level is OK Yes No Check U2004 (WTR1605L) Check TP2 Over 21 dBm?Check FL1008 (B2 Duplexer) Yes No Check TP3 Over -3 dBm?Check U1001(PAM) Yes No
3. TROUBLE SHOOTING - 50 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only BOTTOP 3.5.3.3 WCDMA B4 TP1 TP3 TP2