LG Nexus 5 Service Manual
Have a look at the manual LG Nexus 5 Service Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 1069 LG manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
3. TROUBLE SHOOTING - 31 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only BOT SW2000 RF Switch FL2003 DRx Separator U2004 RF Transceiver FL13002 Separator U1000 Separator FL1005B20Duplexer FL1001B5/B6B19Duplexer FL1013B2DuplexerFL1018Separator FL1012B4Duplexer FL1013B3Duplexer FL1020B1/B4Separator FL1007B1Duplexer U2001B1,4/B2/B3DRx Separator U2007B7DRx Separator FL2012B7 DRxSeparatorFL2014B7 DRx SAW DRx SAWFL2002/ 2001 /2000 B3/ B2 /B1,4 FL2008B20DRx SAW U2003B5/ B8DRx Separator FL1015B7 Duplexer DRx SAWFL2007/ 2005B8/ B5 FL1016B7Balun SW1003RF Switch SW1002RF Switch FL1014Coupler FL1003B8DuplexerFL1011Separator SW1001 RF Switch SW1000 RF Switch
3. TROUBLE SHOOTING - 32 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only RF component Reference No.DescriptionReference No.Description FL1001B5, B6 GSM850 DuplexerFL1002B5, B6 Low Pass Filter FL1003B8, GSM900 DuplexerFL1004B8 Low Pass Filter FL1005B20 DuplexerFL1006B20 Tx Saw Filter FL1007B1 DuplexerFL1008B2, GSM1900 Duplexer FL1012B4 DuplexerFL1013GSM 1800 Duplexer U2005GPS LNAFL1018B1, B2, B4, GSM1800, GSM1900 Separator FL1020B1, B4 SeparatorFL2000B1, B4 DRx SAW Filter FL2001B2 DRx SAW FilterFL2003B1, B2, B4, B5, B6, B8, B20 Separator FL2005B5 DRx SAW FilterFL2007B8 DRx SAW Filter FL2008B20 DRx SAW FilterFL2009GPS, B7 Separator FL2011GPS SAW FilterU1002B20 PAM U1000B5, B8, B20, GSM850, GSM900 SeparatorU1001B1, B2, B4, B8 GSM Quad MMPA U1008B5, B6 PAMU2000DC-DC convertor U2001B1, B2, B4 DRx SeparatorU2002DC-DC convertor (QFE1100) U2003B5, B6, B8 DRx SeparatorU2004RF Transceiver
3. TROUBLE SHOOTING - 33 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 3.2 SIGNAL PATH TOP/BOT 1. WCDMA, LTE B1 TX PATH 2. WCDMA B4 TX PATH 3. WCDMA B2 TX PATH 4. WCDMA B8 TX PATH 5. GSM_HB TX PATH 6. GSM_LB TX PATH 7. COMMON High Band TX/RX PATH 8. COMMON Low Band TX/RX PATH 9.WCDMA, LTE B5 / WCDMA B6 / TX PATH 10. LTE B20 TX PATH 11. LTE B7 TX PATH WCDMA/LTE/CDMA/GSM TX flow TOP
3. TROUBLE SHOOTING - 34 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only BOT
3. TROUBLE SHOOTING - 35 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only - WCDMA/LTE/CDMA/GSM PRX flow 1. WCDMA, LTE B1 PRX PATH 2. WCDMA B4 PRX PATH 3. WCDMA B2 / GSM 1900 PRX PATH 4. WCDMA, LTE B8 / GSM900 PRX PATH 5. LTE B3 / GSM 1800 PRX PATH 6. COMMON High Band TX/RX PATH 7. COMMON Low Band TX/RX PATH 8. WCDMA, LTE B5 / WCDMA B6 / GSM850 PRX PATH 9. LTE B20 PRX PATH 10. LTE B7 TX PATH
3. TROUBLE SHOOTING - 36 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only - WCDMA/LTE/CDMA DRX flow 1. WCDMA, LTE B1 / WCDMA B4 DRX PATH 2. WCDMA B2 DRX PATH 3. WCDMA, LTE B8 DRX PATH 4. WCDMA, LTE B5 / WCDMA B6 DRX PATH 5. LTE B20 DRX PATH 6. LTE B7 DRX PATH
3. TROUBLE SHOOTING - 37 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 3.3 Checking XO Block The output frequency (19.2MHz) of XO (X6000) is used as the reference one of WTR1605L(U2004) and PM8941(U6002) nternal VCO. X6000 TP1 U2004 TP2 BOT TOP
3. TROUBLE SHOOTING - 38 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Schematic of the Crystal Part (19.2MHz) EAW62063901X6000 1RAA19200AAA 19.2MHz 2 1 3 4SENSORXTAL2 XTAL1GND1 C6027 0.1uC6028 1n R6031 DNI DNI R6033 R6032 DNI 13'1/21 DNI(100K,1%) DNI(0 ohm) TP1 DNI C2078 0 R2017100p C2027 79 120XO_IN VTUNE_PRX XO_OUT_A0 TP2
3. TROUBLE SHOOTING - 39 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only Check TP1 1.9 .2 MHz SingleCheck the X6000 No Yes Check TP2 19.2MHz SignalCheck the U6002 No Yes XO OK
3. TROUBLE SHOOTING - 40 -Copyright © 2013 LG Electronics. Inc. All right reserved.Only for training and service purposesLGE Internal Use Only 3.4 Checking RF Front-end Separator 3.4.1 FL1018 (High Band) Check the supply voltage and control level for FL1018/U1000 FL1018 Separator TP2 TP1 TP3 BOT L1054 DNI LMSP32QP-F03 EAT61793601FL1018 23 11 10 8 9 6 7 5 13 4 12 2 15 14 20 17 21 16 22 19 3 18 1 TRX2 VDD TRX10 VIO TRX3 TRX4 SCLK GND5 SDATA TRX6TRX5 TRX1 GND4 GND1 TRX7 TRX9 GND2TRX8 TX1LBTX2HB GND3ANT GND6 C1081 100p +1V8_VREG_S3A_RF 100p C1080 +2V95_VREG_L16 33p C1079 RFFE2_DATA RFFE2_CLK TRX_ANT2 TX_GSM_HB TRX_B3 TRX_B2_B25 TRX_B7 RX_B41 TRX_B4 TRX_B1 TX_B41 TP2 TP3 TP1