LG L25 Service Manual Download Page 103

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5. BLOCK DIAGRAM

- 103 -

Only for training and service purposes

LGE Internal Use Only

[L25] RF Block Diagram

3. RF Block Diagram

VPWR

L10_1.8V

GSM_LB

GSM_HB

ANT1
GSM QUAD
CDMA BC0/BC6
WCDMA B1/5
LTE B1/3/26

GSM_LB

GSM_HB

TX_LB2_OUT
TX_MB2_OUT

TX_BB_

PRX_BB_

WTR0_TXBB_IQ

WTR0_PRXBB_IQ

WTR0 DRXBB IQ

APT

DCDC

VPA

L14_2.75V L10_1.8V

L10_1.8V

VPWR

B1, B3, BC6

B1/BC6

CPL

TX_MB3_OUT

B26(5),BC0

TX_LB4_OUT

DPX

WTR1625L

MMPA

DRX_BB_

GNSS_BB_

WTR0_DRXBB_IQ

WTR0_GNSSBB_IQ

SAW

FEM

B26(5)

PRX_HMB4_IN

PRX_MB1_IN

PRX LB1 IN

B1, BC6

B26(5),BC0,GSM850

DPX

MSM8926-3

DAC_REF

GP_DATA0

WTR0_DAC_IREF

WTR0_GPDATA_0

WTR0 GPDATA 1

ANT2
B11

PRX_MB2_IN

PRX_LB2_IN

GSM LB

GSM_HB

B11

PAM

Dual
SAW

SAW

GP_DATA1

WTR0_GPDATA_1

VPA

L10_1.8V

VPWR

PRX_MB3_IN

ANT3
B1(BC6)/B11 DRX
GNSS

B1, BC6

CPL

DPX

SAW

B11

TX_MB1_OUT

B11

PAM

PDET_RFFB

WTR0_PDET_IN

SSBI_TX_GNSS

SSBI_PRX_DRX

WTR0_SSBI_TX_GNSS
WTR0_SSBI_PRX_DRX

L14_2.75V

DRX HMB4 IN

ANT4
B3/B26
(BC0) DRX

DRX_MB3_IN

GNSS_RF_INP

B11

SAW

DIP

LNA

GNSS_RF_INN

SP2T

VDD_DIO

VDD_RF2_

L10_1.8V

L9_+2.05V

PM8926

L1 +1 225V

DRX_HMB4_IN

SAW

DRX_LB2_IN

B26(5),BC0

PM8926

VDD_RF1_

L1_+1.225V

XO_IN

WTR0_XO_IN

DPX

DRX_MB1_IN

Summary of Contents for L25

Page 1: ...Internal Use Only Service Manual LG L25 Date Dec 2014 Issue 0 9 ...

Page 2: ...TH 15 3 4 Checking RFTx Level 17 3 5 Checking RFTx Level Cont 25 3 6 Checking RF PRx Level 28 3 7 Checking RF DRx Level 31 3 8 GPS WIFI BT Module 34 3 9 GPS WIFI BT SIGNAL PATH 36 3 10 Checking GPS WIFI BT 37 3 11 Checking NFC 43 3 12 SIM 46 3 13 Side Key 48 3 14 USB 50 3 15 Gyro Sensor Accelerometer sensor 53 3 16 Compass Sensor 56 3 17 Proximity Ambient Light Sensor 59 3 18 Camera 62 3 19 LCD 68...

Page 3: ...on service of facilities accessed through or connected to it The manufacturer will not be responsible for any charges that result from such unauthorized use B Incidence of Harm If a telephone company determines that the equipment provided to customer is faulty and possibly causing harm or interruption in service to the telephone network it should disconnect telephone service until repair can be do...

Page 4: ... and Attenuation A phone may interfere with sensitive laboratory equipment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service personnel should ground themselves by using a wrist st...

Page 5: ...Mobile SDRAM LPDDR3 WCN3660A BT WLAN Tranceiver LGL25 Product SPEC Item Feature Comment Supporting Standard US Cellular IMT 2000 GPS LTE B1 B3 B11 B26 WCDMA B1 B5 Frequency Range US Cellular TX 816 848 19 MHz US Cellular RX 861 893 19 MHz IMT 2000 TX 1920 1979 95 MHz IMT 2000 RX 2110 2169 95 MHz LTEB1 TX 1920 1979 9 MHz LTE B1 RX 2110 2169 9 MHz LTE B3 TX 1710 1784 9 MHz LTE B3 RX 1805 1879 9 MHz ...

Page 6: ...MP OIS 2 1MP VT Keypad Full Touch Screen Home Key Side Key Power On Volume up down ANT Main PIFA Embeded Type System connector u USB Ear Phone Jack 3 5Φ Ear Jack Memory 12Gb SDRAM LPDDR3 16GB eMMC Speech coding QCELP EVRC EVRC B EVRC WB Vibrator Coin Type Blue Tooth Bluetooth 3 0 MIDI for BuzzerFunction No Music Player PCM MP3 AAC LC AAC eAAC Vorbis OGG AMR NB WB EVRC QCELP Video Player MPEG4 H 26...

Page 7: ...e Book Name Phone Email Postal Addresses Organizations Birthday Notes It is possible to save 200 call logs Share count last dial number last received number last missed number Last Dial Number Yes It is possible to save 200 call logs Share count last dial number last received number last missed number Last Received Number Yes It is possible to save 200 call logs Share count last dial number last r...

Page 8: ...ing No Support only GSM Call Charge AoC No Call Duration Yes Not support it in menu User can find it in call screen SMS EMS There is no limitation on the number of items It depends on available memory amount EMS does not support SMS Over GPRS Yes EMS Melody Picture No Send Receive Save Yes MMS MPEG4 Send Receive Save Yes Long Message No Cell Broadcast No Download Yes Game No No preinstalled game a...

Page 9: ...era Yes 8M OIS AF Continuous AF Face Tracking focus Touch Focus Self Timer Image 8M Video Size 1080P HDR Continuous Shot White Balance ISO Brightness Grid View Auto Flash For video Zoom Frame Grid Volume Key Image capture Dual Mode Indicator Low Battery scenario JAVA No Voice Dial No IrDa No Bluetooth Yes Bluetooth Ver 3 0 FM radio No GPRS Yes Class 12 EDGE Yes Class 12 Hold Retrieve No No Confere...

Page 10: ...Only LGL25 Product SPEC 10 Battery Bar Specification Icon Note Bar 10 Full 100 Bar 10 Bar 9 100 99 Bar 9 Bar 8 90 89 Bar 8 Bar 7 80 79 Bar 7 Bar 6 70 69 Bar 6 Bar 5 60 59 Bar 5 Bar 4 50 49 Bar 4 Bar 3 40 39 Bar 3 Bar 2 30 29 Bar 2 Bar 1 16 15 Bar 1 Bar 0 6 5 Low Battery Pop up 16 15 6 5 Power Off 1 0 3 4V 3 5V 2 6 Battery Bar ...

Page 11: ...RF Transceiver U1300 B1 B3 B26 BC0 BC6 QSM Quad PAM U1102 B11 Single PA FL1109 B11 Tx SAW U1400 DCDC Convertor U1101 B1 B3 B11 B26 BC0 BC6 GSM Quad FEMid FL1105 GSM900 PRx Filter FL1102 B26 BC0 GSM900 Duplexer FL1101 B3 Duplexer FL1104 B1 BC6 Duplexer FL1108 B11 Duplexer FL1115 B3 B26 BC0 Diplexer FL1112 B26 BC0 DRx Filter FL1110 B1 BC6 DRx Filter FL1113 B11 DRx Filter FL1114 B3 DRx Filter ...

Page 12: ...1 B11 BC6 DRX RF Switch SW1104 B3 B26 BC0 DRx RF Switch SW1101 B1 B3 B26 BC0 BC6 GSM Quad TRx RF Switch SW1102 B11 TRx RF Switch FL1111 B1 B11 BC6 DRx Switch U1103 GPS LNA B1 B11 Diplexer FL1106 GPS LNA B1 B11 BC6 Diplexer ANT1109 ANT1107 ANT1101 ANT1104 ANT6913 ANT6912 FL1103 B1 B3 B26 BC0 BC6 GSM Quad Coupler FL1107 B11 Coupler ANT1102 ANT1105 ANT1103 ANT1106 ...

Page 13: ...Filter FL1111 B1 B11 BC6 DRx Switch FL1112 B26 BC0 DRx Filter FL1113 B11 DRx Filter FL1114 B3 DRx Filter FL1115 B3 B26 BC0 Diplexer U1101 B1 B3 B11 B26 BC0 BC6 GSM Quad FEMid U1102 B11 Single PA U1103 GPS LNA B1 B11 Diplexer U1300 B1 B3 B26 BC0 BC6 QSM Quad PAM U1400 DCDC Convertor for PA U1500 RF Transceiver SW1101 B1 B3 B26 BC0 BC6 GSM Quad TRx RF Switch SW1102 B11 TRx RF Switch SW1103 GPS B1 B1...

Page 14: ...14 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 2 LTE WCDMA CDMA GSM Tx SIGNAL PATH B3 B26 WB5 BC0 B11 GSM 850 900 GSM1800 1900 B1 WB1 BC6 B1 WB1 B3 B26 WB5 BC0 BC6 GSM Quad Common ...

Page 15: ... right reserved Only for training and service purposes LGE Internal Use Only 3 3 LTE WCDMA CDMA GSM Rx SIGNAL PATH B3 B26 WB5 BC0 GSM850 B11 GSM 900 GSM1800 1900 B1 WB1 BC6 B1 WB1 B3 B26 WB5 BC0 BC6 GSM Quad PRx Common B11DRx B1 WB1 BC6DRx B26 WB5 BC0DRx B3DRx ...

Page 16: ...t 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking LTE WCDMA CDMA GSM Block START 1 Check DC POWER Supply Circuit 3 Check RF Signal Path 2 Check XO Re Download S W Cal ...

Page 17: ...ly for training and service purposes LGE Internal Use Only 3 4 Checking RF Tx Level LTE B1 B3 B11 B26 WCDMA B1 B5 CDMA BC0 BC6 GSM Quad TP2 TP1 U1300 B1 WB1 B3 B26 WB5 BC0 BC6 QSM Quad PAM TP3 TP4 TP5 TP11 TP12 TP15 TP14 TP6 U1102 B11 Single PA TP16 TP21 TP22 TP23 TP24 TP25 TP26 ...

Page 18: ...22 9 12 7 20 21 19 15 2 18 8 10 11 14 16 17 13 1 25 6 5 4 3 24 X jXZW 1 2 sXZWZ X Y Y Y Y Y kup sXZX 2 1 Y sXZX kup 2 1 jXZWZ Z Y Y jXZY XU_ Y Y ZZ jXZYZ 1 2 Y ZZ jXZY 1 2 jXZY ZZ 1 2 Y kup sXZX 2 1 Y Y sXZYW kup 2 1 Y Y Y Y sXZX_ YY ZZ jXZWX 1 2 VPA0 Y sXZW X Y kup 2 1 sXZYX ZZ jXZY 1 2 Y sXZXZ YY RX _ yln sXW Y R w y Y Y jXZY_ XWW 1 2 jXZW X 1 2 jXZW XWW 1 2 jXZW XW 1 2 sXZWW U_ sXZXY kup 2 1 jX...

Page 19: ... 1 Checking RF Tx Level LTE B1 WCDMA B1 CDMA BC6 START Set the Phone Tx is ON Set RGI 90 Change the Board Check TP1 C1300 at U1300 Check OVER 21dBm Check TP21 22 23 at U1300 Check Over TP21 22 Over 3 0V TP23 Over 1 7V Check TP11 C1301 at U1300 Check OVER 3dBm PAM Circuit is OK See next Page PM8926 is OK WTR1625L is OK YES YES YES NO NO NO ...

Page 20: ... Only 3 4 2 Checking RF Tx Level LTE B3 START Set the Phone Tx is ON Set RGI 90 Change the Board Check TP3 C1303 at U1300 Check OVER 21dBm Check TP21 22 23 at U1300 Check Over TP21 22 Over 3 0V TP23 Over 1 7V Check TP11 C1301 at U1300 Check OVER 3dBm PAM Circuit is OK See next Page PM8926 is OK WTR1625L is OK YES YES YES NO NO NO ...

Page 21: ... Only 3 4 3 Checking RF Tx Level LTE B11 START Set the Phone Tx is ON Set RGI 90 Change the Board Check TP6 C1132 at U1102 Check OVER 21dBm Check TP24 25 26 at U1102 Check Over TP24 25 Over 3 0V TP26 Over 1 7V Check TP16 C1133 at U1102 Check OVER 3dBm PAM Circuit is OK See next Page PM8926 is OK WTR1625L is OK YES YES YES NO NO NO ...

Page 22: ... 4 Checking RF Tx Level LTE B26 WCDMA B1 CDMA BC0 START Set the Phone Tx is ON Set RGI 90 Change the Board Check TP2 C1320 at U1300 Check OVER 21dBm Check TP21 22 23 at U1300 Check Over TP21 22 Over 3 0V TP23 Over 1 7V Check TP12 L1308 at U1300 Check OVER 3dBm PAM Circuit is OK See next Page PM8926 is OK WTR1625L is OK YES YES YES NO NO NO ...

Page 23: ...nly 3 4 5 Checking RF Tx Level GSM850 900 START Set the Phone Tx is ON Set RGI 90 Change the Board Check TP5 C1327 at U1300 Check OVER 21dBm Check TP21 22 23 at U1300 Check Over TP21 22 Over 3 0V TP23 Over 1 7V Check TP15 L1325 at U1300 Check OVER 3dBm PAM Circuit is OK See next Page PM8926 is OK WTR1625L is OK YES YES YES NO NO NO ...

Page 24: ...ly 3 4 6 Checking RF Tx Level GSM1800 1900 START Set the Phone Tx is ON Set RGI 90 Change the Board Check TP4 C1324 at U1300 Check OVER 21dBm Check TP21 22 23 at U1300 Check Over TP21 22 Over 3 0V TP23 Over 1 7V Check TP14 L1322 at U1300 Check OVER 3dBm PAM Circuit is OK See next Page PM8926 is OK WTR1625L is OK YES YES YES NO NO NO ...

Page 25: ...3 TROUBLE SHOOTING 25 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 5 Checking RF Tx Level Cont TOP BOT TP7 TP5 TP6 TP4 TP1 TP2 TP3 ...

Page 26: ..._ y ymZ pv tjTjWWWWYTX GaGlzkGw Gj GOGkntzGn GP nztX WWGy y Y y X nztX_WWGy ihuk w iZG y y y iY G y SGnzt_ WGy nzt WWGy y Z iXG y y jXXXY XU 2 1 1 4 2 5 3 6 msXXWZ XXWX ymX Yh 21 20 7 8 6 9 5 10 4 3 11 2 12 1 19 18 17 16 15 14 13 msXXWX 7 5 8 4 9 2 3 1 6 jXXWX XU_ 2 1 sXXX XU_ 1 sXXW U 2 1 jXXX XY kup sXXXW 2 1 ZZ jXXW_ X Y kup sXXWZ 2 1 jXXW _UY 1 2 XWW jXXW 1 2 sXXXX _Y 2 1 msXXWY _ Y Z X kup sX...

Page 27: ... for training and service purposes LGE Internal Use Only 3 5 1 Checking RF Tx Level START Set the Phone Tx is ON Change the Board Check TP1 2 3 4 Check OVER 21dBm Check TP5 Check Over 21dBm Check TP6 7 Check OVER 21dBm Duplexer is OK FEMid is OK Coupler is OK YES YES YES NO NO NO ...

Page 28: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 6 Checking RF PRx Level LTE B1 B3 B11 B26 WCDMA B1 B5 CDMA BC0 BC6 GSM Quad TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 TP9 TP14 TP10 TP11 TP12 TP13 TP15 TP16 ...

Page 29: ... 2 1 msXXWX 7 5 8 4 9 2 3 1 6 jXXWX XU_ 2 1 sXXWX Z 2 1 sXXYW X jXXWY kup 1 2 sXXWY ZU 2 1 sXXYY ZUZ sXXX XU_ 1 sXXW U 2 1 XWW jXXYY X Y jXXX XY sXXW YY 2 1 kup sXXXW 2 1 jXXX YU 2 1 sXXX YY 2 1 ZZ jXXW_ X Y kup sXXWZ 2 1 ZZ jXX 1 2 jXX _ ZZ 1 2 jXXW _UY 1 2 jXX X 1 2 X sXXX 1 2 XWW jXXW 1 2 msXXWY _ Y Z X kup sXXW 2 1 kup sXXW 2 1 ZZ jXXW 1 2 sXXYX kup Y X kup sXXYZ Y X XWW jXXWZ 1 2 kup sXXXY 2 ...

Page 30: ...Only for training and service purposes LGE Internal Use Only 3 6 1 Checking RF PRx Level START Replace Main B d Check TP1 2 3 4 5 14 Signal Exist Check TP6 7 8 9 10 11 Signal Exist Check TP12 15 Signal Exist Duplexer Filter is OK FEMid is OK Coupler is OK YES YES YES NO NO NO ...

Page 31: ...Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 7 Checking RF DRx Level LTE B1 B3 B11 B26 WCDMA B1 B5 CDMA BC0 BC6 TP1 TP2 TP4 TP3 TP8 TP7 TP5 TP6 TP9 TP10 ...

Page 32: ...1 sXX W Z 2 1 sXXZ_ XU_ 2 1 X _ U to msXXXZ 5 3 2 4 1 jXX ZZ X Y jXX XWW 1 2 XWW jXX W X Y XWW jXX X Y msXXXX 5 2 6 4 3 1 sXX kup 2 1 jXX W XWW 1 2 XWW jXX Z X Y kup sXXZ Y X msXXXW YX Wto Y X Z jXX X ZZ X Y ZZ jXX X Y Y Y GND1 HI BAND COMMOM GND3 GND2 LO BAND Y Y Y Y Y Y Y UB1 UB2 G1 G2 G3 ANT COMMON G3 G4 UB1 UB2 G1 G2 G3 Y nuk ky tiX iZ ky siY ijW iY i iY Gky iZGky GOGkntzGn GP tjTjWWWWYTX GaGl...

Page 33: ... purposes LGE Internal Use Only 3 7 1 Checking RF DRx Level START Replace Main B d Check TP1 2 3 4 Signal Exist Check TP5 6 7 8 Signal Exist Check TP9 Signal Exist Check TP10 11 Signal Exist SAW Filter is OK Diplexer SPDT is OK GPS LNA Diplexer Module U1103 is OK Diplexer is OK YES YES YES YES NO NO NO NO ...

Page 34: ...t reserved Only for training and service purposes LGE Internal Use Only 3 8 GPS WIFI BT Module 3 8 1 GPS Module The WTR1605L is integrated GPS solution ANT1102 SW1103 U1103 ANT1103 Reference Description U1103 GPS LNA SW1103 RF SWITCH ANT1102 ANT1103 ANTENNA CONTACT ...

Page 35: ...poses LGE Internal Use Only 3 8 2 WIFI BT Module WCN3660A Module is the combination module that integrates WLAN WIFI and BT Reference Description ANT5100 ANT5101 Antenna Contact Feeding FL5100 2 4Ghz 5Ghz Separator FL5101 SAW Filter U5102 5Ghz PAM U5100 Wi Fi BT Chip ANT5100 ANT5101 FL5100 FL5101 U5102 U5100 ...

Page 36: ...c All right reserved Only for training and service purposes LGE Internal Use Only 3 9 GPS WIFI BT SIGNAL PATH 3 9 1 GPS Signal Path 3 9 2WIFI BT Signal Path ANT1102 SW1103 U1103 ANT5101 FL5100 FL5101 U5100 U5102 5Ghz TX 5Ghz RX 2 4Ghz T RX 2 4Ghz 5Ghz T RX ...

Page 37: ...ternal Use Only 3 10 Checking GPS WIFI BT 3 10 1 Checking GPS GPS On GPS will work properly Check if the Antenna Contacts in good Condition ANT1102 ANT1103 Checking voltage at TP1 C1137 2 75V Check if GPS works well Change the Antenna Contact Check PMIC U4100 Change the GPS IC U1103 Change Main Board YES YES YES NO NO NO ...

Page 38: ...137 FEED FEED Y Y ANT COMMON G3 G4 Y Y Y y UXUW y Ui jXX _ kup 1 2 sXX Y X 2 1 sXXZZ XWW 1 2 ANT1102 YXW_ XYT 1 YXW_ XYT ANT1103 1 _Y sXXZ 2 1 z XXWZ Z Y X y UXUW jXX XU ivtGXUW 2V75_VREG_L14 Y GND1 ANT VCC VEN GND3 GNSS_B GNSS_A GND2 CELL Y Y Y Y Y Y nuzz lsuh lu RY ym z jXX XWW 1 2 XWW jXX X 1 2 XXWZ yX 8 7 6 5 9 4 3 1 2 kup sXXZ Y X WUX jXXZ X Y jXXZ ZZ 1 2 TP1 C1137 ...

Page 39: ...e Only 3 10 2 Checking WIFI BT Wi Fi On Change the Main Board Check if the Antenna Contacts are in good condition CN5101 CN5100 Check the mounted condition of FL5100 FL5101 and around them Check if TP1 TP2 TP4 1 3V TP3 3V TP5 VPWR Change the Antenna contacts Repair or replace the damaged part Check PMIC U4100 YES YES YES NO NO NO ...

Page 40: ... TP2 TP3 TP4 TP5 XWW j XWZ 2 _Y j XW kup j XXW j XXX kup FEED ANT5101 YXW_ XYT FEED YXW_ XYT ANT5100 j XW X_ j XXZ kup P1 NC2 GND1 GND3 P2 P3 NC1 GND2 ms XWW 5 4 6 3 7 2 8 1 XWW j XX i V m GymGm lzkGvw pvu y Ui j XWX Y s XWW Y j XWW Y P1 NC2 GND1 GND3 P2 P3 NC1 GND2 5 4 6 3 7 2 8 1 IN GND OUT ms XWX 3 2 1 j XW X j XW kup s ympv n s i ympv Yw n Antenna Contact FL5100 FL5101 FL5100 ...

Page 41: ...i w XWW w XWX XW j XX XW j XX_ kup j XW nuk v pu v v mt oz y mt y mt zzip mt kh h i j s i zzip i kh h kk s sv XwZ s wkl pu ujXVym n s ympv nVym n y s ii pw s ii pu s ii xw s ii xu ujY s i ympv jsr v s lwh j ysX s lwh j ysW s jtk zl s jtk jsr s jtk kh hY s jtk kh hX s jtk kh hW juZ WhTWT i suzw XWW X W ZZ Z Y Z Z Y_ X _ Y X ZY Y Y X X _ _ X Z ZX _ VDD_WL_LO shu x u shu x w shu p u shu p w shu jsr s...

Page 42: ... kk i ii XwZ kk i wss XwZ kk i jv XwZ kk i mt kpn XwZ kk s ii XwZ kk s Ynwh XwZ kk s wss XwZ kk s wj XwZ kk s Ynsuh XwZ kk s nsuh XwZ kk s nwh XwZ kk s Ynwh ZwZ kk s nwh ZwZ nukY nukZ nuk nuk nuk nuk nuk_ nuk nukXW nukXX nukXY nukXZ nukX nukX nukX nukX nukX_ nukX nukYW nukYX nukYY nukYZ nukY nukY nukY nukY nukY_ juZ WhTWT i suzw XWW Y W Z XY YZ YY YX Z_ Z Z X_ X XW YW Y XZ X Y Y Z XX _ W W Y X X Z...

Page 43: ...served Only for training and service purposes LGE Internal Use Only 3 11 Checking NFC NFC Do not Operate Change the Board Check TP 1 VPWR Check TP 2 Bias Range 1 65 1 8V Check TP 3 19 2Mhz Signal exists Battery Board check PM8926 check PM8926 check YES YES YES NO NO NO ...

Page 44: ... lZ mY jY kX lY mX j kZ jZ lX m l kY jX k 1V8_VREG_L6 w YWW w YWY 2V95_VREG_L22 X j YYY X j YX X j YYW jvttvu pYj zkh jvttvu pYj zjs umj jsr v umj pyx umj lu umj tvkl umj jsr ylx umj jsr v j YYZ XWW j YX XWW X j YW j YWW WU R w y umj j YX WU w YWZ RZ W zptX umj G D S Q5200 kom z kk l z j ys zpt jj zz Y X kk hu Y hu X tpk w Y w X kjkj zz zz kk pu y w y u zhw kjkj zht kjkj w ih kjkj z pv pjj z pv zl...

Page 46: ...ce of detecting L25 SIM is SIM inserted to L25 3V_SIM goes to 3V Triggers SIM clock reset and data Start END Re insert SIM Work Well Check 2V95_VREG_L22 C9512 TP1 OK Check Clock Line C9511 TP2 Data Line C9512 TP1 OK Change SIM Card OK END Check PM8926 U4100 for TP1 Check PM8926 U4100 for TP1 MSM8926 U2100 for TP2 or Main BD Change Main BD YES YES YES YES NO NO NO NO ...

Page 47: ...ng and service purposes LGE Internal Use Only 3 12 2 USIM TP2 TP1 TP1 TP2 Bot GND2 GND1 jj yz jsrX ylzly lkX nuk ww pVv ylzly lkY G1 G3 zX zY zZ z G2 z z z z_ y WW X r h WX j WX X 2V95_VREG_L22 h W h WZ h WY XW j XX j XY XW y W XW USIM_VCC UIM1_CLK ptX kh h UIM1_RESET_N umj z w y Ui TP2 TP1 ...

Page 48: ... Use Only 3 13 Side Key 3 13 1 Side Key The sequence of detecting L25 Side key is Side key pressed on L25 KEYPAD_SENSE_2 Volume up KEYPAD_SENSE_0 Volume_down goes low Start Check Down KEYPAD_SENSE_0 VA9710 TP1 Up KEYPAD_SENSE_2 VA9712 TP2 When press S W Is it Low Check S W or Main BD Check the MSM 8926 U2100 or Main BD YES NO ...

Page 49: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 13 2 Side Key TP2 TP1 TP1 TP2 TP2 TP1 Top S1 3 4 5 6 S2 z XW S1 3 4 5 6 S2 z XY h XY h XW y XX XWW y XY XWW rl whk zluzl W rl whk zluzl Y TP2 TP1 ...

Page 50: ...device USB_VCHG goes to 5V USB_IO_P goes to 3 05V USB_DATA is triggered USB working END Start Check connection of u USB and Battery USB Connection OK C4144 TP1 C9203 TP2 Is About 5V Check 5V0_VREG_BHARGER C4143 TP3 Over 4 35V Is USB DM TP4 DP TP5 Triggered Check USB Connection OK Change I O Connector Change TA or USB Cable Check Q4100 Q4101 Check PM8926 U4100 Check the FL9203 Change main BD YES YE...

Page 51: ...3 TROUBLE SHOOTING 51 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 14 2 USB TP3 TP3 TP2 TP1 TP5 TP4 TP2 TP1 TP5 TP4 Top Top ...

Page 52: ... r k YW j X X j X kup VBUS_USB_IN YY j YWZ IN OUT GND1 GND2 ms YWX Y Z X k YW zi k w zi k t wt zi pk wt zi pkGaGk G G G ziG G G GpkG GtztGwo G G y Ui y UXUW kup XWWr y X W j X j X Z XW j X XWW j XZX XW D2_1 S2 D2_2 7 4 3 5V0_VREG_BHARGER 5V0_VREG_BHARGER VPWR VCOIN VPWR 5V0_VREG_BHARGER 1V35_VSW_S3 VBAT j XZY WUX VBAT_SENSE VBUS_USB_IN ih zluzl u ih zluzl w YWX W YZ YWX W ZX RX Z wt nyX Y j GaGs j...

Page 53: ...Main PCB problem If the motion sensor IC is damaged it will do not work even thought power is supplied and MSM8926 controls normally Therefore if the motion sensor is damaged change the motion sensor IC or Main PCB Change Main BD Start Check Gyro Sensor Crack U8100 OK Check 1V8_VREG_LVS1 C8103 TP1 OK Check GYRO_INT TP8100 TP2 SENSOR0_I2C_SDA R2207 TP3 SENSOR0_I2C_SCL R2208 TP4 OK Change the BD Che...

Page 54: ...SHOOTING 54 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 15 2 Gyro Sensor Accelerometer sensor TP3 TP4 TP1 TP2 TP1 U8100 TP2 TP3 TP4 Top Bot ...

Page 55: ... X _XWW 16 18 17 9 8 10 7 11 6 12 5 13 4 14 3 15 2 1 1V8_VREG_LVS1 1V8_VREG_LVS1 n yv pu 1V8_VREG_L27 yYYW YUYr yYYW_ YUYr 1V8_VREG_L6 YUYr yYYW YUYr yYYXW 1V8_VREG_LVS1 YUYr yYYX YUYr yYYXX yYYXY YUYr YUYr yYYXZ yYYX YUYr yYYYW YUYr 1V8_8M_VDDIO 1V8_LCDTOUCH_IO jvttvu pYj zkh jvttvu pYj zjs v jo pYj zkh v jo pYj zjs jhtW pYj zjs jhtW pYj zkh zluzvyW pYj zkh zluzvyW pYj zjs jhtX pYj zkh jhtX pYj z...

Page 56: ...ibrated by the gyro sensor data using SW algorithm Therefore Gyro sensor error makes the compass sensor malfunction Change Main BD Start Check Sensor IC Crack U8200 OK Check 1V8_VREG_LVS1 C8201 TP1 2V85_VREG_L19 C8200 TP2 OK Check COMPASS_INT TP8200 TP3 SENSOR0_I2C_SDA R2207 TP4 SENSOR0_I2C_SCL R2208 TP5 OK Change the BD Check MSM8926 U2100 or Main BD Check PM8926 U4100 for TP1 TP2 YES YES YES NO ...

Page 57: ... TROUBLE SHOOTING 57 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 16 2 Compass Sensor TP4 TP5 TP4 TP5 TP1 TP2 TP3 TP3 U8200 Top Top ...

Page 58: ...5 3 2 4 1 j_YWW WUX zluzvyW pYj zkh zluzvyW pYj zjs jvtwhzz pu 1V8_VREG_L27 yYYW YUYr yYYW_ YUYr 1V8_VREG_L6 YUYr yYYW YUYr yYYXW 1V8_VREG_LVS1 YUYr yYYX YUYr yYYXX yYYXY YUYr YUYr yYYXZ yYYX YUYr yYYYW YUYr 1V8_8M_VDDIO 1V8_LCDTOUCH_IO jvttvu pYj zkh jvttvu pYj zjs v jo pYj zkh v jo pYj zjs jhtW pYj zjs jhtW pYj zkh zluzvyW pYj zkh zluzvyW pYj zjs jhtX pYj zkh jhtX pYj zjs pYjGw T Gz kz SGumj t G...

Page 59: ...y click Phone number click Call connected Object moved at the sensor Ambient Light Sensor is worked as below Settings click Display click Adjust automatically check Change Main BD Start Check Sensor IC Crack U8400 OK Check 1V8_VREG_LVS1 R8401 TP1 2V85_VREG_L19 C8401 TP2 OK Check PROXIMITY_INT D8401 TP3 SENSOR0_I2C_SDA R2207 TP4 SENSOR0_I2C_SCL R2208 TP5 OK Change the BD Check MSM8926 U2100 or Main...

Page 60: ...ING 60 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 17 2 Proximity Ambient Light Sensor TP4 TP5 TP4 TP5 TP3 TP2 U8400 TP3 TP2 TP1 TP1 Top Top Top ...

Page 61: ...wkzT ZWTYWW _ WW 9 3 5 4 6 7 2 8 1 SENSOR0_I2C_SDA SENSOR0_I2C_SCL PROXIMITY_INT 1V8_VREG_L27 yYYW YUYr yYYW_ YUYr 1V8_VREG_L6 YUYr yYYW YUYr yYYXW 1V8_VREG_LVS1 YUYr yYYX YUYr yYYXX yYYXY YUYr YUYr yYYXZ yYYX YUYr yYYYW YUYr 1V8_8M_VDDIO 1V8_LCDTOUCH_IO jvttvu pYj zkh jvttvu pYj zjs v jo pYj zkh v jo pYj zjs jhtW pYj zjs jhtW pYj zkh zluzvyW pYj zkh zluzvyW pYj zjs jhtX pYj zkh jhtX pYj zjs pYjGw...

Page 62: ... module Start Check camera connector Check MIPI Line FL7300 FL7302 TP8 OK Check 2V8_OIS_ANA C7313 TP1 2V8_OIS_DIG C7314 TP2 1V8_8M_VDDIO C7310 TP3 2V7_8M_ANA C7311 TP4 1V8_8M_VCM C7301 TP5 1V2_VREG_L26 C7302 TP6 OK Check The Camera Clock MAIN_CAM0_MCLK C7315 TP7 OK Reconnect Connector Check the MSM 8926 or main BD Check the U7302 for TP1 TP2 U7301 for TP3 TP4 U7300 for TP5 PM8926 U4100 for TP6 or ...

Page 63: ...TING 63 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 18 2 8M_1 3M Camera TP1 TP2 TP3 TP4 TP5 TP6 TP8 TP1 TP2 TP3 TP4 TP5 TP6 TP8 TP7 TP7 Top Bot ...

Page 64: ...M 2V8_OIS_DIG ju ZWW 16 15 17 14 18 13 19 12 20 11 21 10 22 9 23 8 24 7 25 6 26 5 27 4 28 3 29 2 30 1 2V8_OIS_ANA D1 D4 D2 D3 nX G2 ms ZWY 6 3 2 4 1 1V8_8M_VDDIO k ZWW RY _t huh j ZW U VIN VOUT1 EN1 VOUT2 P2 GND P1 EN2 PGND 9 ZWX y WZY 5 4 6 3 7 2 8 1 k ZWW 4 3 5 2 1 R w y vpz ylzl u _t pv lu _t huh lu nwpv XXW nwpv j ZX kup W y ZY 1V2_VREG_L26 y ZYY XW vsdWUWX XWW j ZWY 1V8_8M_VDDIO RY _t huh FL7...

Page 65: ...ated by MSM8926 Change the camera module Start Check camera connector Check MIPI Line FL7400 TP5 OK Check 1V8_8M_VDDIO C7400 TP1 1V2_VREG_L5 C7401 TP2 2V8_VREG_L15 C7402 TP3 OK Check The Camera Clock VT_CAM_MCLK C7403 TP4 OK Reconnect Connector Check the MSM 8926 or main BD Check the U7302 for TP1 TP2 U7301 for TP3 TP4 U7300 for TP5 PM8926 U4100 for TP6 or main BD YES YES YES YES NO NO NO NO ...

Page 66: ...3 TROUBLE SHOOTING 66 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 18 5 2 1M Camera TP4 TP4 TP2 TP1 TP3 TP5 TP2 TP1 TP3 TP5 Top Bot ...

Page 67: ...G_L5 y W kup j WW YUY YUY j WX j WY YUY 11 12 13 14 15 16 17 18 19 20 jhtW pYj zjs jhtW pYj zkh jhtX pYj zkh jhtX pYj zjs jht ylzl u RX _ jht pv kk RX Y jhtlyh k kk RY jht h kk tjTjWX_ TXZGaGz Gh Gw G Gk Gw GkntzGn G GkntzGn G tjTjWWW WTXZGaGj G G T G GwhkG GpYjG y UhGj 1 6 2 7 FL7400 3 8 4 9 10 5 kup j WZ vsdWUWX XW y WX ju WW 10 9 8 7 6 5 4 3 2 1 k WW jht tpwp kh hW u jht tpwp jsr w jht tpwp jsr...

Page 68: ...Main LCD control signals are generated by MSM8926 Those signal s path are MSM8926 LCD Module Check LCD Module Start Check the circuit power Check LCD connector CN16001 TP1 Check 3V1_VREG_L28 C16000 TP2 1V8_LCDTOUCH_IO C16002 TP3 Follow the power on trouble shooting Reconnect CN16001 Check U4100 PM8926 TP2 Check U7303 LDO TP3 YES YES YES NO NO NO ...

Page 69: ...1 20 22 19 23 18 24 17 25 16 26 15 27 14 28 13 29 12 30 11 31 10 32 9 33 8 34 7 35 6 36 5 37 4 38 3 39 2 40 1 XWr yX WYY X jX WWW 3V1_VREG_L28 kX WW kX WWW kX WWX X jX WWY kX WW kX WW kX WWZ kX WW XWr yX WY yX WY kup 1V8_LCDTOUCH_IO 1V8_LCDTOUCH_IO XWr yX WYZ v jo pYj zkh v jo pYj zjs PMIC_LED_A PMIC_LED_C jhij slk 5V5_DDVDH 5V5_DDVDL v jo h u v jo ylzl u ylz Y y Ui y Ui uj y Ui y Ui TP3 TP2 TP1 ...

Page 71: ...nly 3 20 Touch Trouble Shooting Touch control signals are generated by MSM8926 Change Touch Module Start Check Touch Connector TP1 Check I2C Line ZD16005 ZD16006 TP4 OK Check 3V1_VREG_L28 C16000 TP2 1V8_LCDTOUCH_IO C16002 TP3 Connect Touch Connector Check U2100 MSM8926 Check U4100 PM8926 TP2 Check U7303 LDO TP3 YES YES YES NO NO NO ...

Page 72: ...20 22 19 23 18 24 17 25 16 26 15 27 14 28 13 29 12 30 11 31 10 32 9 33 8 34 7 35 6 36 5 37 4 38 3 39 2 40 1 XWr yX WYY X jX WWW 3V1_VREG_L28 kX WW kX WWW kX WWX X jX WWY kX WW kX WW kX WWZ kX WW XWr yX WY yX WY kup 1V8_LCDTOUCH_IO 1V8_LCDTOUCH_IO XWr yX WYZ v jo pYj zkh v jo pYj zjs PMIC_LED_A PMIC_LED_C jhij slk 5V5_DDVDH 5V5_DDVDL v jo h u v jo ylzl u ylz Y y Ui y Ui uj y Ui y Ui TP3 TP2 TP4 TP1...

Page 74: ...service purposes LGE Internal Use Only 3 21 Vibrator Troubleshooting Check out the setting menu on the phone If not check Test points shown on the pictures Check MOTOR Start Check PMIC_VIB_N TP1 Check VPWR TP2 Check MOTOR Connector TP3 Check U4100 PM8926 Check L9910 Check L9911 YES YES YES NO NO NO ...

Page 75: ...LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 TP3 k__WX k__WY k XY VPWR j XZ kup j X X ZZ k XX ZZ k XW XWW s XW XWW s XX ju WW 2 1 wtpj pi u y WUZ cG T TXTX t Ge y Ui TP3 TP1 TP2 ...

Page 76: ... LGE Internal Use Only 3 22 Audio 3 22 1 Speaker Trouble Shooting It s trouble shooting guide for no sound case Speaker control signals are generate by WCD9302 U6100 Check U6100 WCD9302 Start Check Speaker Contact TP1 Check TP2 Check TP3 Check Speaker Module Check L6916 L6917 Check L6914 L6915 YES YES YES NO NO NO ...

Page 77: ...s Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 TP3 h Y h Y FEED YXW_ XYT ANT6912 FEED ANT6913 YXW_ XYT s X W W s X zwr u zwr w cG T TX z Ge y Ui y UXUW s X W s X W j ZZ X j Z X ivtGXUW ivtGXUW TP1 TP2 TP3 ...

Page 78: ...urposes LGE Internal Use Only 3 22 2 Receiver Trouble Shooting Receiver control signals are generate by MSM8926 U2100 WCD9302 U6100 Voice Receiver path as below WCD9302 EARO_P EARO_N Receiver Check U6100 WCD9302 Start Check Receiver Contact TP1 Check TP2 Check Receiver Module Check L6912 L6913 YES YES NO NO ...

Page 79: ...79 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 CN6912 2 1 s XY _Y j ZW ZZ ZZ j ZX h YW h YX _Y s XZ yj u yj w j G cG T_TX y v Ge y WUZ TP1 TP2 ...

Page 80: ...y 3 22 3 Main MIC Trouble Shooting Main Mic located on FPCB It s operating voice call except speakerphone voice recording camcorder recording Check U6100 WCD9302 Start Check MIC Signal TP1 VA6919 or C6924 Check MIC Bias TP2 VA6917 or C6923 Check MIC_IN1_P TP3 Check FB6917 Check U6100 WCD9302 Check MIC6912 Main MIC YES YES YES NO NO NO ...

Page 81: ...4 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 TP3 h X_ h X WUX j YZ h X y ZY kup j Y ZZ X_WW mi X P G1 G2 O tpj XY 4 3 2 1 tpj puX u tpj puX w tpj iphz X thpu tpj TP1 TP2 TP3 ...

Page 82: ...E Internal Use Only 3 22 4 Sub MIC Trouble Shooting Sub Mic located on Main PCB It s operating only speakerphone voice call Check U6100 WCD9302 Start Check MIC Signal TP1 VA6924 or C6932 Check MIC Bias TP2 VA6922 or C6929 Check MIC_IN3_P TP3 Check FB6918 Check U6100 WCD9302 Check MIC6913 SUB MIC YES YES YES NO NO NO ...

Page 83: ...14 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 TP3 y Y W h YY h Y P G1 G2 O tpj XZ 4 3 2 1 X_WW mi X_ WUX j Y ZZ j ZY tpj iphz X tpj puZ w tpj puZ u z i tpj y Ui TP1 TP2 TP3 ...

Page 84: ...rposes LGE Internal Use Only 3 22 5 Ear MIC Trouble Shooting Ear MIC control signals are generate by WCD9302 U6100 Check U6100 WCD9302 Start Check EAR_MIC Signal TP1 FB6915 Check MIC_BIAS_2 signal TP2 R6922 Check EAR_MIC_JACK signal TP3 Check U6912 Check U6100 WCD9302 Check J6912 EAR_MIC YES YES YES NO NO NO ...

Page 85: ...and service purposes LGE Internal Use Only TP1 TP2 TP3 f mi XZ f mi X mi XY X_WW S W_Detect SPK_L SPK_R MIC GND q XY X_WW mi X y Ui W y Y j YY XWW y YZ vsdWUWX XUYr j X kup j X kup y YY Xr vsdWUWX YU t y Y ZZWr y YX R w y S 1 B1 6 VCC 2 GND 5 A 3 B0 4 XY mzh X s tpj puY u tpj iphz Y TP3 TP2 TP1 ...

Page 86: ... 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 DOWNLOAD TOOL INFORMATION TOOLVERSION DLL NAME USB DRIVER Please Check theVersion to B2B H W Name Part No SW D L Cable ...

Page 97: ...LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGL25 LGL25 LGL25AT 00 V10a SSV XXX JUN 03 2013 0 tot LGL25 LGL25_20140617_LGFLASHv160_Download LGL25_20140617_LGFLASHv160_Download ...

Page 98: ...Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGL25 LGL25 LGL25_20140617_LGFLASHv160_Download LGL23AT 00 V10a SSV XXX JUN 03 2013 0 tot LGL25 LGL25 ...

Page 103: ...R0_GNSSBB_IQ SAW FEM B26 5 PRX_HMB4_IN PRX_MB1_IN PRX LB1 IN B1 BC6 B3 B26 5 BC0 GSM850 DPX MSM8926 3 DAC_REF GP_DATA0 WTR0_DAC_IREF WTR0_GPDATA_0 WTR0 GPDATA 1 ANT2 B11 PRX_MB2_IN _ _ PRX_LB2_IN GSM LB GSM_HB B11 PAM Dual SAW SAW GP_DATA1 WTR0_GPDATA_1 VPA L10_1 8V VPWR PRX_MB3_IN ANT3 B1 BC6 B11 DRX GNSS B1 BC6 CPL DPX SAW SAW SAW B11 TX_MB1_OUT B11 PAM PDET_RFFB WTR0_PDET_IN SSBI_TX_GNSS SSBI_P...

Page 104: ...L_CMD_SET WL CMD CLK WL_RFIO_5G WLAN_SET WLAN_CLK WLAN_I_P WLAN I N _ GPIO_40 GPIO_41 GPIO_42 _ _ WL_CMD_DATA2 WL_CMD_DATA1 WL_CMD_DATA0 WLAN_BB_IP WL_BB_IP FEM PAM SW_5G_PA_EN SW_5G_CTL PDET_IN WLAN_DATA_2 WLAN_DATA_1 WLAN_DATA_0 PA 3P3 Level WLAN_I_N WLAN_Q_P WLAN_Q_N WLAN_BB_IM WLAN_BB_QP WLAN_BB_QM WL_BB_IN WL_BB_QP WL_BB_QN CLK_OUT PAM 5GHZ_RX 5GHZ_TX WLAN_WCSS_XO WCN_XO VPWR L6_1 8V L10_1 8V...

Page 105: ...MON_I2C_SDA NFC_IRQ GPIO 21 GPIO_10 ANT1 GPIO_11 RXP TX1 TX2 RXN IRQ I2C_SDA I2C_SCL Matching MATCHING GPIO_21 VPWR GPIO_20 NFC_VEN ANT2 VBAT VUP VBAT_DCDC IRQ VEN NFC_MODE GPIO_22 DWL_REQ 2V95_VREG_L22 1V8_VREG_L6 FET UIM1_DATA GPIO_57 EXT_SW_CTRL PVDD PMUVCC NFC CLK REQ PM8926 PM8926 USIM 3V0_USIM1_NFC Option NFC_SWP CLK1 NFC CLK O SWIO_UICC SIMVCC NFC_CLK_REQ CLK_REQ X tal BB_CLK2 GPIO_3 CLK NF...

Page 106: ... 1V8_VREG_L6 VREG_L7 VDD_A2 VREG_L8 VDD_PLL2 MIPI_DSI_1P8 1V9_VREG_L7 1V8_VREG_L8 PAM GPS LNA FEM SPDT VIO VIO VDD VREG_L14 VCC VDD 2V75_VREG_L14 VREG_L10 VDD_USB_1P8 1V8_VREG_L10 VPWR VPA PM8926 VPWR 8M Main Cam OIS LDO 1 LDO 2 LDO 3 PA DCDC VREG_L20 VDD_USB_3P3 VREG_L21 VDD_P2 SDC2 pad VREG_L22 VDD_P5 UIM1 pad 3V075_VREG_L20 2V95_VREG_L21 2V95_VREG_L22 VREG_L24 VDD_WLAN 1V3_VREG_L24 1 2V_VREG_L2...

Page 107: ...A MIPI_DSI0_LN1_P LCD_MIPI_DATA1_P MIPI_CSI0_LN3_N MIPI_CSI0_LN3_P MIPI_CSI0_LN4_P MAIN_CAM0_MIPI_DATA2_P MAIN_CAM0_MIPI_DATA2_N MAIN_CAM0_MIPI_DATA3_P MAIN_CAM0_MIPI_DATA3_N GPIO_114 MAIN_CAM0_RESET_N 1V8_8M_VCM LDO MIPI_CSI0_LN4_N 1V2_VREG_L26 MIPI_DSI0_LN2_N MIPI_DSI0_LN2_P LCD_MIPI_DATA2_N LCD_MIPI_DATA2_P MIPI_DSI0_LN3_N MIPI_DSI0_LN3_P LCD_MIPI_DATA3_N LCD_MIPI_DATA3_P LED_A LED_C VPWR LCD_P...

Page 108: ...6 3 SDCARD_DATA 0 3 SDCARD_CMD SDCARD_CLK SDC2_CLK SDC2_CMD SDC2 DATA 0 3 SDC1_DATA 0 7 SDC1_CLK DAT 0 7 CLK SDC1_DATA 0 7 eMMC_CLK eMMC CMD VCC VDD DAT 0 3 CMD CLK2 SD USIM Combo eMMC 16GB _ SDC2_DATA 0 3 SDCARD_DET GPIO_37 SDC1_CMD RESOUT_N CMD RST_N MSM_RESOUT_N eMMC_CMD UIM1_CLK UIM1_DATA UIM1_RST_N VCCQ VCC UIM1_RESET UIM1_CLK UIM1_DATA DAT 0 3 S W RST CLK1 I O 1V8_VREG_L6 2V95_VREG_L17 VPP V...

Page 111: ...12 1 19 18 17 16 15 14 13 DNI L1114 2 1 C1182 33p 1 2 FL1101 7 5 8 4 9 2 3 1 6 C1172 18n 2 1 C1101 1 8n 2 1 2108612 5 ANT1119 1 L1101 3n 2 1 L1120 1n C1102 DNI 1 2 L1102 3 6n 2 1 L1122 3 3n L1116 1 8n 1 L1109 5 6n 2 1 100p C1122 1 2 C1114 12p L1105 22n 2 1 DNI L1110 2 1 C1117 2 7n 2 1 R1101 51 TOL 0 01 L1117 22n 2 1 1 2108612 5 ANT1109 33p C1108 1 2 C1148 DNI 1 2 U1102 ACPM 9311 6 7 4 8 3 5 9 2 10...

Page 112: ...IN1 BGND PGND SCLK SVDD GPO1 SW1 ACB2 ACB1 SW2 SDATA FB VIO SGND PVIN2 LM3263 U1400 B1 D3 C1 C3 C2 B2 A4 C4 A2 D2 D4 D1 A3 B3 A1 B4 VPA0 10u C1400 1n C1403 C1408 DNI 1V8_VREG_L10 1 5u L1400 VPWR L1300 6 8n L1312 DNI 2 1 C1320 27p RFFE1_CLK RFFE1_CLK RFFE1_DATA RFFE1_DATA TX_MB2_GSM_HB TX_LB4_BC0_B26_B5 TX_LB2_GSM_LB TX_MB3_BC6_B1_B3 FEMID_TX_GSMLB FEMID_TX_GSMHB DPX_TX_B1 DPX_TX_B26 DPX_TX_B3 NOTE...

Page 113: ...AG63652201 2108611 5 FEED ANT1116 EAG63651901 2108609 5 GND GND WTR0_PDET_IN GNSS_IN_P GNSS_IN_N DRX_HMB4_BC6_B1 DRX_MB1_B3 PRX_HMB4_BC6_B1 PRX_MB1_B3 PRX_LB1_BC0_B26_B5_G850 DRX_LB2_BC0_B26_B5 PRX_LB2_G900 DRX_MB3_B11 PRX_MB2_GSM_HB PRX_MB3_B11 TX_MB1_B11 TX_MB2_GSM_HB TX_LB4_BC0_B26_B5 TX_LB2_GSM_LB TX_MB3_BC6_B1_B3 WTR0_TXBB_Q_N WTR0_TXBB_I_P WTR0_TXBB_I_N WTR0_TXBB_Q_P WTR0_DRXBB_Q_P WTR0_DRXB...

Page 114: ...GNSSBB_Q_N WTR0_GNSSBB_I_N WTR0_GNSSBB_I_P WTR0_GNSSBB_Q_P eMMC_CLK SLEEP_CLK WTR0_DAC_IREF VREF_LDO_MPP_3 PMIC_SPMI_CLK PMIC_SPMI_DATA VT_CAM_MIPI_DATA0_N VT_CAM_MIPI_CLK_P VT_CAM_MIPI_CLK_N VT_CAM_MIPI_DATA0_P BB_CLK MSM_RESIN_N MSM_PS_HOLD LCD_MIPI_CLK_P LCD_MIPI_DATA0_P LCD_MIPI_DATA0_N LCD_MIPI_DATA1_N LCD_MIPI_DATA1_P LCD_MIPI_CLK_N MAIN_CAM0_MIPI_CLK_P MAIN_CAM0_MIPI_DATA1_P MAIN_CAM0_MIPI_...

Page 115: ...AU4 AV1 AV3 AR8 AU6 T1 AN6 AP1 AR2 AT5 AV5 AY5 AR10 AV7 AW6 AP13 AR12 AT11 AY9 AN14 AU12 AP15 AV11 AY11 AW10 K35 C28 A28 G34 M35 B29 C40 D39 C38 H35 J38 B3 C4 B7 A4 C6 A10 C10 B9 A8 B31 A30 D37 L34 AC40 AD39 W40 AC38 P39 V37 T39 N38 R40 Y37 AL34 AR40 AM35 AK35 AJ40 AJ36 AH35 AD35 AG40 AH39 AD37 AB35 AC36 Y33 AE40 AR38 AP37 AU40 AT37 AW36 AY37 AP35 AV39 AN36 AR36 AU38 AV37 AC34 AB37 AD33 AE34 C36 D...

Page 116: ... VDD_MEM_05 VDD_MEM_06 VDD_MEM_07 VDD_MEM_08 VDD_MEM_09 VDD_MEM_10 VDD_MEM_11 VDD_MEM_12 VDD_MEM_13 VDD_MEM_14 VDD_MEM_15 VDD_MEM_16 VDD_MEM_17 VDD_MEM_18 VDD_MEM_19 VDD_MEM_20 VDD_MEM_21 VDD_MEM_22 VDD_MEM_23 VDD_MEM_24 VDD_MEM_25 VDD_MEM_26 VDD_MEM_27 VDD_MEM_28 VDD_MEM_29 VDD_MEM_30 VDD_MEM_31 VDD_MEM_32 VDD_MEM_33 VDD_APC_01 VDD_APC_02 VDD_APC_03 VDD_APC_04 VDD_APC_05 VDD_APC_06 VDD_APC_07 VDD...

Page 117: ...8 GND_169 GND_170 GND_171 GND_172 GND_1 GND_2 GND_3 GND_4 GND_5 GND_6 GND_7 GND_9 GND_10 GND_11 GND_12 GND_13 GND_14 GND_15 GND_16 GND_17 GND_18 GND_19 GND_20 GND_21 GND_22 GND_23 GND_24 GND_25 GND_26 GND_27 GND_28 GND_29 GND_30 GND_31 GND_32 GND_33 GND_34 GND_35 GND_36 GND_37 GND_38 GND_39 WCN_XO GND_41 GND_42 GND_43 GND_44 GND_45 GND_46 GND_47 GND_48 GND_49 GND_50 GND_51 GND_52 GND_53 GND_54 GND...

Page 118: ...L U3200 G3 G2 G1 F14 F13 F12 F10 F3 F2 F1 E14 E13 E12 E10 E9 E8 E5 E3 E2 E1 D14 D13 D12 D3 D2 D1 C14 P14 C13 P13 C12 P12 C11 P11 C10 P10 C9 P9 C8 P8 C7 P7 C5 P2 C3 P1 C1 N14 B14 N13 B13 N12 B12 N11 B11 N10 B10 N9 B9 N8 B8 N7 B7 N6 B1 N3 A14 N1 A13 M14 A12 M13 A11 M12 A10 M11 A9 M10 A8 M9 A7 M8 A6 M7 A2 M3 A1 M2 M1 P6 L14 P4 L13 N5 L12 N2 L3 K8 L2 H10 L1 G5 K14 E7 K13 C4 K12 K10 K9 K7 J10 K6 F5 K5 ...

Page 119: ... BB_CLK MSM_RESIN_N MSM_PS_HOLD BATT_UIM_ALARM FLASH_STROBE_TRIG TX_GTR_THRESH VREF_MSM_PX_MPP_1 BB_CLK_EN BAT_ID JTAG_PS_HOLD VBAT_SENSE_N VBAT_SENSE VBAT_SENSE PMIC_AUDIO_REF_CLK VBAT_THERM VBAT_THERM VREF_BAT_THERM NFC_CLK_OUT PM_KYPD_PWR_N VBAT_SENSE_P VBAT PCB_REVISION EXT_OVP_CTRL NFC_CLK_REQ CABC_WLED PM_USB_ID PMIC_VIB_N Use F 1 grade component 1 PCB rev 2 Device ADC MC C04766 5 DGMS Guide...

Page 120: ...5_VREG_L22 1V3_VREG_L24 2V075_VREG_L25 1V8_VREG_LVS1 1V225_VREG_L1 1V2_VREG_L2 1V15_VREG_L3 1V2_VREG_L4 R4130 100K TOL 0 01 33n C4130 VCOIN BAT4130 VBUS_USB_IN 22u C4172 DNI C4141 3V1_VREG_L28 240n L4131 C4184 1u 1u C4185 C4186 1u C4188 1u 1u C4189 C4190 1u 1u C4183 C4133 22u L4133 1u 2 1 VBAT_SENSE_N PMIC_LED_A PMIC_LED_C FLASH_LED_OUT_P FLASH_LED_OUT_P VBAT_SENSE_P PCB_REVISION EXT_OVP_CTRL 2014...

Page 121: ... VDD_WL_5GLNA_1P3 VDD_WL_5GPA_1P3 VDD_WL_2GPA_3P3 VDD_WL_5GPA_3P3 GND2 GND3 GND4 GND5 GND6 GND7 GND8 GND9 GND10 GND11 GND12 GND13 GND14 GND15 GND16 GND17 GND18 GND19 GND20 GND21 GND22 GND23 GND24 GND25 GND26 GND27 GND28 WCN3660A 0 79BWLNSP U5100 27 46 60 53 12 23 66 22 65 21 79 38 44 37 39 18 1 10 20 2 13 15 62 56 55 67 42 73 11 59 78 9 40 50 6 45 25 7 17 14 3 4 49 75 69 54 74 30 26 35 76 C5104 18...

Page 122: ...IN RXP RXN SAP_DCDC SAM_DCDC VUP VBAT_DCDC CLK1 SWIO_UICC SWIO_SE PN5472A2UK C20803 U5200 E5 F4 F3 B2 A3 A1 A2 A4 B4 B7 E7 E4 E3 F2 C2 D1 E2 F1 B6 B1 B5 C4 C5 D3 A5 C6 C7 B3 A7 A6 D5 F6 C3 E1 F5 E6 D2 C1 D7 D4 F7 D6 1V8_VREG_L6 TP5200 TP5202 FEED 2108612 5 ANT5201 2V95_VREG_L22 1u C5222 1u C5219 1u C5220 COMMON_I2C_SDA COMMON_I2C_SCL NFC_CLK_OUT NFC_TX_2 NFC_TX_2 NFC_TX_1 NFC_TX_1 NFC_RX_P NFC_RX_...

Page 123: ...IMBUS_CLK PMIC_AUDIO_REF_CLK CODEC_INT CODEC_RESET_N CDC_BOOST_5V_EN EAR_MIC_JACK EAR_MIC_JACK EAR_SENSE_JACK EAR_SENSE_JACK MIC_IN1_N MIC_IN1_N MIC_IN1_N HPH_R_OUT HPH_R_OUT HPH_L_OUT HPH_L_OUT MIC_IN1_P MIC_IN1_P MIC_BIAS_1 MIC_BIAS_1 MIC_BIAS_1 RCV_N RCV_N RCV_P RCV_P MIC_IN2_N MIC_IN2_N MIC_IN2_N MIC_BIAS_2 MIC_BIAS_2 MIC_IN3_P MIC_IN3_P HPH_REF HPH_REF HPH_REF SPK_N SPK_N SPK_P SPK_P MIC_IN3_...

Page 124: ... R16024 DNI 1V8_LCDTOUCH_IO 1V8_LCDTOUCH_IO 1V8_VREG_L6 DNI R16026 10K R16023 4 7u C7317 VOUT VDD GND CE PGND RP114K181D TRB U7303 5 3 2 4 1 100K R7326 R7327 0 4 7u C7316 VT_CAM_MIPI_DATA0_N VT_CAM_MIPI_CLK_P VT_CAM_MIPI_CLK_N VT_CAM_MIPI_DATA0_P LCD_MIPI_CLK_P LCD_MIPI_DATA0_P LCD_MIPI_DATA0_N LCD_MIPI_DATA1_N LCD_MIPI_DATA1_P LCD_MIPI_CLK_N MAIN_CAM0_MIPI_CLK_P MAIN_CAM0_MIPI_DATA1_P MAIN_CAM0_M...

Page 125: ...REG_L19 SDA VDD INT SCL GND LEDK LEDA LDR NC APDS 9930 200 U8400 9 3 5 4 6 7 2 8 1 SENSOR0_I2C_SDA SENSOR0_I2C_SDA SENSOR0_I2C_SDA SENSOR0_I2C_SCL SENSOR0_I2C_SCL SENSOR0_I2C_SCL KEYPAD_SENSE_0 KEYPAD_SENSE_2 KEYPAD_SENSE_1 PM_KYPD_PWR_N PROXIMITY_INT GYRO_INT COMPASS_INT Rev B Rev B 8 2 1 2_Compass_HSCDTD008A HOME Rev_0 5 9 7 1_Power_Lock_Volume_Key 8 1 3 4 Accel_Gyro_MPU 6515 Rev_1 0 Rev_1 0 Vol...

Page 126: ...C9203 IN OUT GND1 GND2 FL9201 4 2 3 1 2V95_VREG_L22 C9502 33p 1V8_VREG_L6 C9503 1u 2V95_VREG_L18 R9501 1M VA9508 VA9509 VA9510 VA9504 VA9503 VA9502 10p C9511 C9512 10p R9509 10 USIM_VCC 2V95_VREG_L22 3V0_USIM1_NFC USIM_VCC 2V95_VREG_L21 SC20015 1 SC10003 1 SC10006 1 SC10007 1 SC10009 1 SC20010 1 SC20006 1 SC20008 1 SC20005 1 SC20003 1 SC20001 1 SC10011 1 33p D9910 100n L9910 100n L9911 CN9900 2 1 ...

Page 127: ... Only for training and service purposes LGE Internal Use Only 6 CIRCUIT DIAGRAM ANT101 1 ANT102 1 3 SW101 4 2 1 KEYPAD_SENSE_1 KEYPAD_SENSE_1 C clip pad Î á Á 9 7 2_Home_Key_SW MC C00069 11 Key ESD protection on each signal applied DNI Pad DGMS Guide Rev_0 5 ...

Page 128: ...7 BGA PIN MAP 127 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 7 BGA PIN MAP U5100 WCN3660A BT Wi Fimodule TOP View USE NOT IN USE ...

Page 129: ...rvice purposes LGE Internal Use Only U3000 K4E2E304EE SDRAM LPDDR312Gbit Top View Power Ground ZQ NC NOTE 1 In case ODT function is not used ODT pin should be considerd as NC ODT Will be connected to rank 0 The ODT Input to Rank 1 If 2nd rank is present will bl connected to Ground in the package ...

Page 130: ... PIN MAP 129 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U2100 MSM8926 Top View Lower Left quadrant USE NOT IN USE ...

Page 131: ... PIN MAP 130 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U2100 MSM8926 Top View Lower Left quadrant USE NOT IN USE ...

Page 132: ... PIN MAP 131 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U2100 MSM8926 Top View Upper Right quadrant USE NOT IN USE ...

Page 133: ... PIN MAP 132 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U2100 MSM8926 Top View Upper Left quadrant USE NOT IN USE ...

Page 134: ... Number Name Pin Number Name Pin Number Name Pin Number Name A3 DAT0 C2 VDDi J5 Vss N4 VccQ A4 DAT1 C4 VssQ J10 Vcc N5 VssQ A5 DAT2 C6 VccQ K5 RST_n P3 VccQ A6 Vss E6 Vcc K8 Vss P4 VssQ B2 DAT3 E7 Vss K9 Vcc P5 VccQ B3 DAT4 F5 Vcc M4 VccQ P6 VssQ B4 DAT5 G5 Vss M5 CMD B5 DAT6 H5 DS M6 CLK B6 DAT7 H10 Vss N2 VssQ NC No Connect Shall be connected to ground or left floating ...

Page 135: ...N MAP 134 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only Top View U1400 LM3263 IC DC DC Converter Top View USE NOT IN USE ...

Page 136: ...7 BGA PIN MAP 135 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U4100 PM8926 PMIC Top View ...

Page 137: ... PIN MAP 136 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U1500 WTR1625L Top View Lower Left quadrant USE NOT IN USE ...

Page 138: ...PIN MAP 137 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U1500 WTR1625L Top View Lower Right quadrant USE NOT IN USE ...

Page 139: ... PIN MAP 138 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U1500 WTR1625L Top View Upper Left quadrant USE NOT IN USE ...

Page 140: ... PIN MAP 139 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U1500 WTR1625L Top Viw Upper Right quadrant USE NOT IN USE ...

Page 142: ...7 BGA PIN MAP 141 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only LGE Internal Use Only U7500 TPS65132 DSV Bottom View ...

Page 143: ...5501_1 0_TOP MIC6913 Sub MIC No Sub MIC operation SW9712 Volume up Key No Volume up operation U8400 APDS 9930 200 No Proximity Ambient operation U1500 WTR1625L No call operation U6100 WCD9302 No Audio operation U1300 SKY77629 21 No RF Power U2100 U3000 MSM8926 LPDDR3 No boot Reset etc SW9710 Volume down Key No Volume down operation U4100 PM8926 No Power On Charging etc SW9711 Power Key No Power on...

Page 144: ...0 Main Camera CNT No Main Camera operation S9500 SD SIM combo socket No SD SIM operation CN9200 USB IO No USB operation CN7400 Front Camera CNT No Front Camera operation U7500 TPS65132 No DSV operation U5200 PN547 No NFC operation ANT5100 ANT5101 BT WiFi ANT Clip No BT WiFi Service U3200 eMMC No boot Reset Abnormal behavior ANT5200 ANT5202 NFC ANT Clip No NFC Service CN16001 IN Cell LCD Touch CNT ...

Page 147: ...C1141 R2106 L1303 C1133 R4115 C1134 R2304 C7403 C6939 C1304 C2370 C6108 SC10006 D9206 C7315 C4185 C1502 FL1101 C2310 C1161 C6109 C2376 C1169 C1178 FL1113 C1150 C1500 L1321 ANT1 D9204 VA9710 C1164 C6110 L1304 C4159 C1510 C4163 C1503 L1128 C2371 VA2200 U1400 C8400 R9711 R2201 R4145 R4114 C9204 C1323 C2379 SW9710 C4189 R2108 L1137 R2104 Q4100 L1140 R4118 L1118 C1117 L1104 L1154 C1518 C4162 C1519 R211...

Page 148: ... 1 0 1 C 1 1 1 1 C 5 1 2 7 C 4 1 3 8 C 5 1 4 2 U 7 3 0 1 L 6 9 1 4 D 9 9 1 1 F B 5 1 0 0 C 5 1 2 4 C 1 1 8 2 C 5 2 1 3 V A 9 5 0 8 C 6 9 3 3 C 3 2 0 5 F B 6 9 1 4 C 2 3 5 3 C 1 1 4 9 C 6 9 2 3 C 1 1 2 2 C 8 1 0 1 A N T 1 1 0 7 C 5 1 0 0 C 2 3 0 8 C 5 1 5 5 V A 6 9 2 1 D 7 3 0 0 C N 6 9 1 2 L 6 9 1 7 T P 5 1 0 0 C 2 3 8 4 C 4 1 4 0 R 6 9 2 6 R 7 5 5 0 L 1 1 5 2 R 2 2 1 1 C 5 1 4 8 C 2 3 7 7 C 1 1 5...

Page 149: ...nternal Use Only 9 CALIBRATION CAL INFORMATION S WVERSION Please Check theVersion to B2B H W Name Part No PIF PIF200 AllType BJAY0024021 USB Cable USB Cable RAD32247898 Power Cable DC Power Cable RAD32247878 I O Cable RF Cable_Main Power Supply_PIF Power Supply 5 3V RFTest Equipment NOTICE CMW500 RF Cable connection ...

Page 151: ... Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only MS695 Tachyon36 LGMS695_20120213_Calibration TachyonV48 LGL25 20140723 ALL File Calibration LGL25 LGL25 ...

Page 156: ...ht reserved Only for training and service purposes LGE Internal Use Only This is for example You can check C LGE Tachyon Model L25 Setting Guide 5 5V RAD32167861 RF cable MS 156C P No MXFJK1WT4000C2 COM3 The phone must be fitted with the bettery COM1 A B 2A 2B ...

Page 157: ...urposes LGE Internal Use Only This is for example You can check C LGE Tachyon Model L25 Setting Guide MXFJK1WT4000C2 MS 156C RAD32167861 B A 2A 2B 2 1 3 4 USB cable A B type P No BJAY0020060 GPIB cable IEEE 488 P No BJAY0020058 RF Connection Cable COM3 COM1 Shield Box USB Cable A 2A 2B A B 2A 2B 1 3 4 2 ...

Page 168: ... 25 Hidden Menu List Start the desired menu Menu touch Device Test List All Auto Test Partial AATSET needed All Auto Test Result Partial AATSET needed All Auto all Test Device functionality testing at the factory to use Normal Boot power key FTM Boot power Key All Auto Test Full All Auto Test Full menu click Auto Detecting Item USIM1 Card SD Card Ear Phone wrong TA wrong Battery Battery ID ...

Page 169: ...right 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Key Press Test Check Key Press Proximity sensor Camera Main Test Main Camera Test Preview and Result Camcorder Test ...

Page 170: ...EN MENU 169 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Display Check Test Touch Pass Check Change the White color Ring test Vibrator test ...

Page 171: ...ight 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Touch window test Write with finger Motion Sensor Test Check Magnetic Accelerometer Gyroscope Sensor GPS BT WIFI Test ...

Page 173: ...ing and service purposes LGE Internal Use Only 11 DISASSEMBLE GUIDE 1 DISASSEMBLE REAR COVER ASS Y 1 Disassemble the Rear Screws Screw Point 11 Points FAB32798601 Unhook 2 Unhook in the inside of Cover rear using a wide spatula 2 1 3 Start Point Unhook direction 3 Unhook along to the direction ...

Page 174: ...erved Only for training and service purposes LGE Internal Use Only 2 DISASSEMBLE MAIN PCB 1 Dissemble the Rear Ass y 1 Disconnect Front Camera Connector 2 Disconnect LCD FPCB Connector 3 Unhook the PCB hook 2 Disconnect connectors and unhook the PCB hook 3 Pull in main PCB ...

Page 175: ...ternal Use Only 3 DISASSEMBLE HW COMPONENTS Disassemble Front Camera EBP61841901 At First take off FPCB At Second disassemble the Bracket Homekey ABA75449001 Disassemble Receiver EAB63288401 Disassemble Earjack EAG63930601 1 Disassemble Components from Bar Ass y disassemble The Home key ABH75439601 2 Disassemble the Homekey ...

Page 176: ... reserved Only for training and service purposes LGE Internal Use Only 4 DISASSEMBLE MAIN ANTENNA Unhook 2point 1 Unhook the hook between the Rear cover and Main Antenna Disassemble at First the right hook and next second left hook 2 Disassemble Main Antenna EAB63748301 ...

Page 177: ...11 DISASSEMBLE GUIDE 176 Copyright 2014 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 5 COMPLETE DISASSEMBLING LG L25 DISASSEMBLE LG L25 ...

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