LG -K430DSF Service Manual
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LG -K430DSF Service Manual

LG -K430DSF Service Manual

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MOBILE PHONE

SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL
LG-K430DSF
MODEL :
http://eduwebcell.blogspot.com/
Date:Feb 2016 / Ver. 1.0

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Summary of Contents for LG LG-K430DSF

  • Page 1: Mobile Phone

    MOBILE PHONE SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL LG-K430DSF MODEL : http://eduwebcell.blogspot.com/ Date:Feb 2016 / Ver. 1.0...

  • Page 2: Table Of Contents

    3.13 charger 3.14 Audio 3.15 Checking LCD Block 3.16 Touch 3.17 Sensor 3.18 Checking USB Block 3.19 Camera 4. BLOCK DIAGRAM…..........92 5. CIRCUIT DIAGRAM..........8: Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 3: Introduction

    This manual provides the information necessary to repair, calibration, description and download the features of this model. 1.2 Regulatory Information A. Security This material is prohibited to share and release to unauthorized person, in accordance with the regulations, LG Electronics, Civil / criminal responsibility in accordance with the relevant provisions violate. B. Precautions for repair •...

  • Page 4: Performance

    1850 – 1910 1930 – 1990 LTE3 1710 – 1785 1805 – 1880 LTE7 2500 – 2570 2620 – 2690 LTE28 703 – 748 758 – 803 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 5: Hw Features

    Type In-Cell Touch 9. Main Camera (13M) Type CMOS image sensor Resolution 13MP @ 30 FPS Focus (Laser / OIS) AF (X/X) # of Flash Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 6 Max 40Mbps (SDIO Driver performance) Depend on environment 0 ~ 50m (depend on environment) 13. GPS type A-GPS 14. FM type FM Radio, 3.5pi Ear-jack Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 7: Rssi Display

    & CPIPH Level =-3.3 BAR 2->1 - 103dBm± 3dB - 101dBm± 3dB -115dBm ±3dB BAR 1->0 - 105dBm± 3dB - 107dBm± 3dB -128dBm ± 3dB Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 8: Current Consumption

    EGSM, LV5 @ BATT Capacity : 2300mAh (GSM) 400mA under Calling 300m over Cat2 Tx 10dBm @ BATT Capacity : 2300mAh (LTE) 430mA under Charging 4h 20m under Phone off time Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 9: Battery Bar

    53% -> 52% Low battery pop-up 15% , 5% 57 도 , 60 도 (Power off) Bar 10 -> Bar 9 48% -> 47% high temperature pop-up Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 10: Sw Specification

    There is no limitation on the n Group umber of items. It depends on available memor y amount. Fixed Dial Number Service Dial Number My Profile (add/edit/delete are Own Number supported) Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 11 Over the Web Game Calendar Memo There is no limitation on the number o f items. It depends on available memory amo unt. World Clock Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 12 HOGP, HDP, DID] FM radio GPRS Class 12 EDGE Class 12(Rx only) Hold / Retrieve Conference Call Max. 6 DTMF Memo pad SyncML Google Hangout Email IMAP/POP3/SMTP/EAS Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 13: Trouble Shooting

    Replace X5001 and then check TP1 XO Circuit is OK. Is it 26MHz? Check next step The Problem may be Logic part Refer to Logic trouble shoot Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 14: Transceiver Dc Power Supply Circuit Block

    Refer to Logic trouble shoot The Problem may be Check TP2 Logic part +1.8V_RF is OK? Refer to Logic trouble shoot Check next step Image Main Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 15: Dc-Dc Block

    Refer to Logic trouble VBAT is OK? shoot Check TP2 Check U4100 Physical 0.5V ≤ TP2 ≤ 4.2V ? Circuit Diagram Damage or soldering condition Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 16 (2.5V≤TP1 ≤3.1V) Refer to Logic trouble (3.9V≤TP2 ≤4.2V) shoot Circuit Diagram NOT GOOD Check U1002 physical Damage Replace U1002 or soldering condition Check Next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 17 (2.5V≤TP1 ≤3.1V) Refer to Logic trouble (1.7V≤TP2 ≤1.9V) shoot Circuit Diagram NOT GOOD Check U1001 physical Damage Replace U1001 or soldering condition Check Next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 18: Gsm Rf Part

    Check Transceiver DC Power supply Block Refer 3.2 Check DC-DC Block Refer 3.3 Check ASM Block Refer 3.4 Check T/RX Block Re-Download & Cal Change the Board Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 19 3.5.1 GSM RF Part RX RF PATH Image Main 1. GSM850 RX PATH 2. GSM900 RX PATH 3. GSM1800 RX PATH 4. GSM1900 RX PATH Main SW1001 SW1002 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 20 Main Checking Flow Image START U1001 Check Check TP1 Signal exist? SW1002 Soldering Check Check TP2 Signal exist? U1001 Circuit Diagram Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 21 Circuit Diagram Component Check TP3/4 Signal exist? above RF signal path Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 22 Checking Flow Image Main START U1001 Check Check TP1 Signal exist? SW1100 Soldering Circuit Diagram Check Check TP2 Signal exist? U1001 Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 23 Check Component Circuit Diagram Check TP3/4 Signal exist? above RF signal path Check Transceiver Replace U1500 physical damage or soldering condition GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 24 3.5.6 GSM RF Part TX RF PATH 1. GSM850 TX PATH 2. GSM900 TX PATH 3. GSM1800 TX PATH 4. GSM1900 TX PATH Main SW1001 SW1002 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 25 Check TP1 Other part +VPWR OK? Check Logic part Check DC-DC Power Check TP2 Block 1.5V≤TP2≤ 2V? Refer to 1.8V Check Next step Image Main Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 26 Image Checking Flow START U1001 Main Check Check TP1 Signal exist? U1001 Soldering Circuit Diagram Check U1002 Check TP2 Signal exist? Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 27 START Check TP1/2 Replace U1100 If GSM850/900 Over 9dBm? Circuit Diagram Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 28 U1100 Check TP1/2 If GSM1800/1900 Over Replace U1100 9dBm? Circuit Diagram Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 29: Wcdma Rf Part

    Check Transceiver DC Power supply Block Refer 3.2 Check DC-DC Block Refer 3.3 Check ASM Block Refer 3.4 Check T/RX Block Re-Download & Cal Change the Board Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 30 Image Main 1. WCDMA B5 RX PATH 2. WCDMA B8 RX PATH 3. WCDMA B1 RX PATH 4. WCDMA B2 RX PATH Main SW1001 SW1002 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 31 Image Checking Flow Main START U1001 Check Check TP1 Signal exist? SW1001 Soldering Circuit Diagram Check Check TP2 Signal exist? U1001 Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 32 Checking Flow Image START Check TP1/TP2 Signal Replace exist? U1002 Circuit Diagram Replace Check Transceiver U1500 physical damage or soldering condition GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 33 Circuit Diagram Check Component Check TP3/4 Signal exist? above RF signal path Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 34 Image 1. WCDMA B5 TX PATH 2. WCDMA B8 TX PATH Main 3. WCDMA B1 TX PATH 4. WCDMA B2 TX PATH Main SW1001 SW1002 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 35 Image Checking Flow Main START U1001 Check Check TP1 Signal exist? U1001 Soldering Circuit Diagram Check Check TP2 Signal exist? U1002 Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 36 RF signal path FL1108 Check TP2 Replace U1100 Signal is over 3.5dBm? Check Transceiver physical damage Replace U1500 or soldering condition U1002 NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 37 3. TROUBLE SHOOTING 3.6 WCDMA RF PART 3.6.8 Checking RF Signal TX path(WCDMA B1) Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 38 Main START U1001 Check Check TP1 Signal exist? SW1002 Soldering Circuit Diagram Check Check TP2 Signal exist? U1002 Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 39 FL1105 Check TP3/4 Replace U1100 Signal is over 3.5dBm? Main U1100 Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 40 3. TROUBLE SHOOTING 3.6 WCDMA RF PART 3.6.11 Checking RF Signal TX path(WCDMA B5/8) Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 41: Lte Rf Part

    Check Transceiver DC Power supply Block Refer 3.2 Check DC-DC Block Refer 3.3 Check ASM Block Refer 3.4 Check T/RX Block Re-Download & Cal Change the Board Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 42 3.7.1 LTE RF Part RX RF PATH Image 1. LTE B3 RX PATH Main 2. LTE B7 RX PATH 3. LTE B20 RX PATH Main SW1001 SW1002 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 43 Checking Flow Image START Main U1001 Check Check TP1 Signal exist? SW1001 Soldering Check U1001 Check TP2 Signal exist? Circuit Diagram Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 44 Check TP2 Signal exist? Component above RF signal path Circuit Diagram Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 45 Checking Flow Image Main START U1001 Check Check TP1 Signal exist? SW1002 Soldering Check U1001 Check TP2 Signal exist? Circuit Diagram Soldering Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 46 Check TP2 Signal exist? Component above RF signal Circuit Diagram path Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 47 Check TP2 Signal exist? Component above RF signal path Circuit Diagram Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 48 Check TP2 Signal exist? Component above RF signal path Circuit Diagram Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 49 3.7 LTE RF PART 3.7.7 LTE RF Part DRX RF PATH Image 1. LTE B3 DRX PATH B7 DRX PATH Main Main B28 DRX PATH Main Main Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 50 Check TP6/7/8 Signal exist? Main Check Component SW1000 above RF signal path Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Main Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 51 3. TROUBLE SHOOTING 3.7 LTE RF PART 3.7.8 Checking RF Signal DRX path(LTEB3/B7/B20) Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 52 3.7.9 LTE RF Part TX RF PATH Image Main 1. LTE B3 TX PATH 2. LTE B7 TX PATH 3. LTE B28 TX PATH U1100 Main SW1001 SW1002 U1002 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 53 START U1001 Check U1001 Check TP1 Signal is over 21dBm? Soldering Check TP2 Check U1002 Signal is over 21dBm? Soldering Circuit Diagram Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 54 U1002 Check TP2 Replace U1100 Signal is over 23.5dBm? Circuit Diagram Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 55 START Check U1001 Check TP1 SW1002 Signal is over 21dBm? Soldering Check TP2 Check U1001 Signal is over 21dBm? Soldering Circuit Diagram Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 56 U1002 Check TP2 Replace U1100 Signal is over 23.5dBm? Circuit Diagram Check Transceiver physical damage Replace U1500 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 57 RF signal path Check TP2/3 Replace U1100 Signal is over 23.5dBm? FL1103 Check Transceiver physical damage Replace U1500 U1002 or soldering condition NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 58 U1500 Check TP2/3 Replace U1100 Signal is over 23.5dBm? FL1102 Check Transceiver physical damage Replace U1500 or soldering condition U1002 NOT GOOD Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 59 3. TROUBLE SHOOTING 3.7 LTE RF PART 3.7.14 Checking RF Signal TX path(LTE B28A/B) Circuit Diagram B28A/B Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 60: Power

    (Check MT6328) C4124 Check Sleep Clock level ? (Check MT6328) PWR KEY(R4101) Core DC/DC INDUCTOR(L4132) Change MT6753 Check Battery connector(CN9201) Return to Start BATTERY CONNECTOR(CN9201) Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 61 3. TROUBLE SHOOTING 3.8 Power Checking Power signal (Battery connector, Power Key, PMIC Regulator) Circuit Diagram PWR KEY(R4101) BATTERY CONNECTOR(CN1) Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 62 3. TROUBLE SHOOTING 3.8 Power Checking Power signal (Battery connector, Power Key, PMIC Regulator) Circuit Diagram Core DC/DC INDUCTOR(L4132) 32K Sleep Clock Out (C4124) IO DC/DC Inductor(L4103) Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 63: Charger

    4.9V(or 5.0V) (or uUSB Cable) Is it charging properly After turning on? Change the Charger ( U4700 ) Linear Charger Change the Main PCB Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 64: Audio

    Checking Flow Start Check the Receiver. And reconnect RCV module Hear the Voice Circuit Diagram through the RCV? Receiver Change RCV Module? Change Main Board Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 65 Start Check the Speaker. And reconnect Speaker module Speaker Hear the Sound through the SPK? Circuit Diagram Change SPK Module? ANT6200 ANT6201 Change Main Board Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 66 Mic works well? Circuit Diagram Reconnect or change Mic Voice signal OK? Change MT6328(U4100). Mic works well? Change Main Board Check FB6208, VMIC voltage level (C6221) Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 67 Mic works well? Reconnect or change Mic Voice signal OK? Change MT6328(U4100). Mic works well? Change Main Board Check FB6209, , VMIC voltage level (C6226) Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 68 Check the left signal and detection line short when headset inserted? Circuit Diagram Yes, but still not works Change MT6328(U4100). Mic works well? Change Main Board Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 69 Check the left signal and detection line short Circuit Diagram when headset inserted? Yes, but still not works Change MT6625L(CN6814). Mic works well? Change Main Board MT6625L Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 70 LCD display is OK ? Check LCD Power TP1~TP2 Change the LCD Module MIPI CLK/DATA & LEDA TP3 Change the Main Board The LCD works Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 71: Checking Lcd Block

    The LCD control signals are generated by MT6753. Its interface is MIPI having four data lanes and one clock lane. Circuit Diagram MIPI CLK : TP1(FL5002) PIN #1,#2 MIPI DATA : TP2 (FL5001) Pin #5,#6,#7,#8 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 72 C Line & Signal Line (TP3~TP5) Touch Works OK? Change Main Board Check Touch Module Connector Touch Works OK? Change Font A’ssy Touch Woks OK ? Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 73 3. TROUBLE SHOOTING 3.12 Checking Touch Block The Touch control signals are generated by MT6753. It is assembled with LCD. Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 74 Check the sensor function Function is OK? Circuit Diagram Calibration OK? Change the Sensor IC Function is OK? Change the main board Function is OK? Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 75: Sensor

    Object moved at the Power (C8400) Proximity sensor Circuit Diagram LCD off? Power (C8400) Check power (C8400) Output work well? Change the main board Function is OK? Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 76 Circuit Diagram Connection OK? Change I/O connector( CN9200) Is the signal ok for Change AP( U2100 ) USB+ & - ? Change the Main PCB Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 77 Camera is OK ? Circuit Diagram Check power supply (TP1~TP4) Check the camera signals Change the MCLK(TP5),MIPI_CLK(TP6), Main board MIPI_DATA(TP7) Change the Camera Camera is OK ? Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 78 Camera is OK ? Circuit Diagram Check power supply (TP1~TP3) Check the camera signals Change the MCLK(TP4),MIPI_CLK(TP5), Main board MIPI_DATA(TP6) Change the Camera Camera is OK ? Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 79 SW1003 Signal of WiFi_11b exist? MT6625L Replace U5100 Circuit Diagram Check Check TP2 Component Signal of WiFi_11b exist? above RF signal path Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 80 And Check voltage of Signal exist? GPS 2.8V Replace u and Check FL6002 Check TP2 Signal exist? Component Circuit Diagram above RF signal path Check next step Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 81 HPH_L/R MIC_IN2_P/N 2300mAh(Typ), VBAT HOOK_DET Li-Ion MIC_BIAS_2 PMIC SPK_P/N Interface MT6328 - Power/Lock RCV_P/N PM_KYPD_PWR_N - Up/Down MIC_1 MIC_IN1_P/N MIC_BIAS_1 Motor MIC_2 MIC_IN3_P/N 32.768KHz XOUT Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 82 DRX B3/B2 SP6T DRX B3/B2 DRX_MB2(B3,B2) DRX B40 DRX B40 ANT 4 DRX_HB2(B40) DRX B7 DRX B7 B17/20/28A/28B DRX_HB3(B7) DRX B17/B20/B28A/28B DRX B17/B20/B28A/28B DRX_LB2(B17,B20,B LNA Module Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 83 VGP1 +1V05_DVDD_SRAM DVDD_SRAM1~3 VSRAM VPOS VNEG IOVD AVDD VDD VOUT BACK BT/FM/ CAMERA LIGHT IC Touch MCU CAMERA SIM1 GPS LNA U3001 SIM2 GPS/WIFI U4001 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 84 CLK2 SPI_INT +3V0_MTK_USIM1 SDCARD_CMD MSDC1_CMD VSIM1 VDDSWPIN0 SDCARD_DATA2 MSDC1_DAT2 DAT2 SDCARD_DATA3 VBAT MSDC1_DAT3 CD/DATA3 USIM2 VBAT SIM2_RESET_N S9602 3V0_MTK_USIM2 SIM2_SRST VSIM2 SIM2_CLK SIM2_SCLK SIM2_DATA SIM2_SIO Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 85: Camera

    CMMCLK1 (PMIC) 5M/8M +1V8_MTK_CAM_IOVDD VT CAM (FF) VCAMIO VT_CAM_MIPI_CLK_N MIPI_RCN_A +2V8_MTK_VCAMA 30 PIN CON. VCAMA VT_CAM_MIPI_CLK_P MIPI_RCP_A +1V22_MTK_CAM_DVDD VT_CAM_MIPI_DATA[0:1]_N VCAMD MIPI_RDN[0:1]_A VT_CAM_MIPI_DATA[0:1]_P MIPI_RDP[0:1]_A VT_CAM_RESET_N CMMCLK Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 86 VBAT CONN. CS_P CN9101 CS_P CS_N CS_N KEYPAD_SENSE_0 BACK KEY PM_KYPD_PWR_N KPCOL1 KEYPAD_SENSE_1 PWR/UP/DOWN PWRKEY KPCOL2 AUDIO_CLK AUD_CLK_MOSI AUD_CLK AUDIO_DATA_MISO AUD_DAT_MISO AUD_CLK_MISO AUDIO_DATA_MOSI AUD_DAT_MOSI AUD_CLK_MOSI Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 87 WB_TX WB_TX CONN_RSTB HRST_B WB_RSTB CONN_SPI_CLK SCLK WB_SCLK ANT 6 CONN_SPI_DATA SDDATA WB_SDDATA BT_WLAN_ANT RF2G CONN_SPI_EN WB_SEN LNA Module GPS_IN GPS_RFIN U5001 WLAN_CLK XO_IN MT6169 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 88 ANTRDR_P NFC_CLK_REQ GPIO_3 CLK_REQ ANTTAG_N USIM# NFC_TX2 NFC_SWP ANTRDR_N SWPIO_0 +3V0_MTK_USIM1_NFC VDDSWP_0 PMIC VBAT VBAT U4100 +1V8_MTK_VIO MT6328 VDDIO +3V0_MTK_USIM1 VDDSWPIN U5001 26M_NFC_CLK MT6169 XTAL_XOP Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 89: Circuit Diagram

    5.CIRCUIT DIAGRAM CIRCUIT DIAGRAM Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 90 G2 O2 1.1t C1081 0724_change C1082 L1016 CN1001 CN1002 CN1003 CN1004 CN1005 DRX_MB1_P C1036 R1023 R1024 4.7K 4.7K CN1006 CN1007 CN1008 CN1009 LG Electronics 1.1t TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name Drawing Date...
  • Page 91 100p PRX_HB1_P GND1 GND4 L1164 L1165 L1166 L1167 GND2 GND3 L1163 GND1 GND4 L1162 PRX B7 0.5p 1.5n LG Electronics GND3 GND2 C1168 100p PRX_HB1_N C1169 PRX_B4_N TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name...
  • Page 92 DRX_HB3_P RFIP2_HB3 GND15 DRX_HB3_N RFIN2_HB3 GND16 X5001 GND17 GND18 GND19 VCONT XTAL2 GND20 XTAL1 KT2016K26000ZAW28QAS C5109 C5110 0.1u C5011 0.1u LG Electronics TITLE MODEL NAME SIZE DWG NO PDM NUM BER DRAWN BY SHEET Date User Name 1_WTR1605L Drawing Date...
  • Page 93 EBI_DQS_3 RDQS3 EBI_DQS_0_B RDQS0_B EBI_DQS_1_B RDQS1_B EBI_DQS_2_B RDQS2_B EBI_DQS_3_B RDQS3_B EBI_CLK RCLK0 EBI_CLK_B RCLK0_B VREF_LPDDR3 VREF R216 REXTDN Changed - 141121 LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY User Name SHEET Date Drawing Date 2-1-1_MSM8974_DATA...
  • Page 94 AK21 PCB_INDICATOR_1 GPIO_100/BPI_BUS18 AH19 PCB_INDICATOR_2 GPIO_101/BPI_BUS19 AK20 PCB_INDICATOR_3 GPIO_102/BPI_BUS20 GPIO_124/BPI_BUS21 GPIO_125/BPI_BUS22 GPIO_126/BPI_BUS23 GPIO_127/BPI_BUS24 GPIO_128/BPI_BUS25 GPIO_129/BPI_BUS26 GPIO_130/BPI_BUS27 LOW : Exteranl VLTE_SRAM Buck disable LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name 2-2_MT673158P_GPIO Drawing Date...
  • Page 96 MODE C2363 VOUT/VFB C2362 C2364 C2361 close to PMIC Output voltage changed : 1.15V - 141121 LG Electronics - Vout = Vfb x (1+R1/R2) - C2363 x R2304 = 3x10^6 - 6x10^6 TITLE MODEL NAME SIZE DWG NO PDM NUMBER...
  • Page 97 DVSS60 AC15 DVSS128 DVSS61 AC17 DVSS62 DVSS129 AC18 DVSS63 DVSS130 AC19 DVSS64 DVSS131 AC21 DVSS65 DVSS132 AC22 DVSS66 DVSS133 AC23 DVSS134 DVSS67 LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name 2-1-1_MSM18974_DATA Drawing Date...
  • Page 98 VSS39 VDD2_13 VSS40 VDD2_14 VSS41 VDD2_15 VSS42 VSS43 VDD2_16 VSS44 VDD2_17 VSS45 VDD2_18 VSS46 R3309 VSS47 0.01 VSS48 VSS49 LG Electronics VSS50 DNU9 TITLE Schematic1 PDM NUMBER DRAWN BY SHEET Date User Name Drawing Date KEEP CLOSE TO THE PIN...
  • Page 99 CHG_D_M CHG_DM CHG_D_P CHG_DP Recommand : Tie to ear-jack GND CS_N CS_N CS_P CS_P 0.1mm trace good shielding (differential) ISINK0 ISINK1 AVSS45_ISINK LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY User Name SHEET Date Drawing Date 4711_PMIC_PM8226...
  • Page 100 1.2 / 1.3 / 1.5 / 1.8 / 2.5 / 2.8 / 3.0 / 3.3 VSRAM 0.6 to 1.31 VIBR 1.2 / 1.3 / 1.5 / 1.8 / 2.0 / 2.8 / 3.0 / 3.3 VAUX18 VAUD28 DVDD18_DIG 1.8 VRTC LG Electronics TITLE MSM8926_B2_mini SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date...
  • Page 101 C5220 DNI +3V0_MTK_USIM1_NFC VDDSWP_0 VDD_ADC ZD5201 VDD_XTAL NFC_SWP SWPIO_0 TP5205 VDD_VCO VDDSWP_1 Changed C5220 ( 06/02 ) VDDA_CAP SWPIO_1 VDD_ANT C5208 C5209 26M_NFC_CLK C5210 LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name Drawing Date...
  • Page 102 FL5400 TP5400 +1V8_MTK_VIO LDO_IN/VDDM BCEB LDO_OUT BWEB TP5401 TP5402 TP5403 TP5404 1SEG_SPI_CS 1SEG_SPI_MISO 1SEG_SPI_MOSI 1SEG_SPI_CLK C5410 R5400 1SEG_CLK MT6169 Buffer Clock CIS_DNI LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name 5-3-1-6_On1e8_SEG_FC8180 Drawing Date...
  • Page 103 LCD_MIPI_DATA0_P (VDDIO)17 (DSV_N_EN)18 DSV_AVEE_EN R5012 (DSV_P_EN)19 DSV_AVDD_EN R5013 (T_WKUP)20 TOUCH_WAKEUP add 150921 VA5005 TOUCH_SPI_CLK Rev.1.0 will be deleted C5002 C5001 TOUCH_SPI_CS C5009 C5010 LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER SHEET Date DRAWN BY User Name Drawing Date...
  • Page 104 MAIN_CAM_MIPI_DATA3_N VT_CAM_MIPI_DATA0_P VT_CAM_MIPI_DATA3_N VT_CAM_MIPI_DATA0_N MAIN_CAM_MIPI_CLK_P MAIN_CAM_MIPI_DATA2_P MAIN_CAM_MIPI_CLK_N VT_CAM_MIPI_DATA2_P MAIN_CAM_MIPI_DATA2_N VT_CAM_MIPI_CLK_P VT_CAM_MIPI_CLK_N VT_CAM_MIPI_DATA2_N GB 042-30S-H10-E3 000 2-Lane -> 4-Lane change 1019 ENBY0040701 GB042-30S-H10- E3000 LG Electronics TITLE Schematic1 SIZE DWG NO PDM NUMBER SHEET Date DRAWN BY User Name Drawing Date...
  • Page 105 MC-C00074-11 : For ESD Protection / Tuning points When USE) TVS devices's Working Voltage When USE) TVS devices's Working Voltage must be greater than the Path voltage must be greater than the Path voltage LG Electronics TITLE MSM8926_X5_GLOBAL SIZE DWG NO...
  • Page 106 U8700 BU52033NVX D9500 CONTACT HALL_INT +1V8_MTK_VIO L9501 (DGMS Guide) MC-C00058-12 Adjust the bypass capacitor value as necessary, according to signal line noise conditions LG Electronics TITLE MSM8926_X5_GLOBAL SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name Sensor Drawing Date...
  • Page 107 FL6400 15.09.20 VBUS_USB_CHARGER_IN GND1 GND2 05.13 change C6406 EAG64149801 --> EAG63510401 CN9200 USB_D_M +1V8_MTK_VIO USB_D_P 90 ohm impedance USB_ID NORMAL(OFFSET) ZD6401 ZD6400 VA6401 LG Electronics TITLE MSM8926_B2_mini SIZE DWG NO PDM NUMBER SHEET Date DRAWN BY User Name Drawing Date...
  • Page 108 <2015/07/31> SC2008 Change DLA_1 DLA_1 MBK64673901--> MBK64753801 DLA_2 DLA_2 DLA_7 DLA_7 OJ7000 OJ7001 OJ7005 OJ7007 DLA_3 DLA_3 DLA_6 DLA_6 DLA_4 DLA_4 DLA_5 DLA_5 LG Electronics TITLE MSM8926_B2_mini SIZE DWG NO PDM NUMBER DRAWN BY SHEET Date User Name Drawing Date...

  • Page 109: Bga Pin Map

    U2100_MT6732_IC,Digital Baseband Processor(Top View) U3300_KMQ72000SMB-316,IC,MCP.eMMC4905(Top View) O Not used O Not used U4100_MT6325_IC,PMIC (Top View) U4200_MT6311_IC,2 PMIC (Top View) O Not used O Not used Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 110: Pcb Layout

    7. PCB LAYOUT LG-K430dsF-MAIN_TOP-1 TOP-2 TOP-3 Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 111 FL1107 Duplexer FL1105 Filter B7 No Service B3/DCS No Power On/No service L7500 DSV IC U1001 Switch No LCD No Service FL1104 Filter B5 No Service Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 112 U5100 Connectivity MT6625L No motor function No WiFi/GPS/FM Radio/Bluetooth U2100 AP MT6754 U4100 KMQ72000SM-B316(MCP Memory) No Power On No Power On U8100 Acceleration Compass No Sensor Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 114 No Sim or SD-card function CN9201 Back Key Connector No Power On FL1000 Filter B17 B20 B28 No Service CN9101 Back key connector No back key function Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 115 No LCD/ No Touch function FL6400 USB Filter U4700 Charger IC No USB No Charging CN9200 USB Connector No USB Connection No Charging MIC6200 Main Mic No Mic Function Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 116 http://eduwebcell.blogspot.com/...

  • Page 117: Hidden Menu

     All Test Items are continued  Each test item can be selected and one after another. performed by user.  Continuous information on the menu, giving you ability test. Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 118 2. Key Press Test 3. Display Check Test 4. Ring Test 8. GPS/BT/WIFI Test 5. Vibrator Test 6. Motion Sensor Test 7. Loop Back Test Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 119 8. HIDDEN MENU 9. Touch Draw -Manual 10. Camera(Main) Test 11. Camcorder Test 12. Camera(VT) Test Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 120: Download

    USB DLC 3. USB D/L Cable setting 4. Flash tool D/L setting ※ If you want more information, please refer B2B’s Notification “Download User Guide”. Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 121: Calibration

    2. Port Setting (Refer to Attached ppt) 1) Uart Port1 : Use the "LGE Mobile USB Serial Port" CMW 500 RF Cable connection 3. Calibration Cable setting 4. Calibration Tool Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 122: Disassemble Guide

    Removal of battery cover using nail nick shown in Removal of battery using nail nick shown in red circle red circle Nail nick Nail nick Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 123 2) Disassembly of hooks on left, right and top sides (Left figure) with the directions shown in right figure. Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 124 1. Bottom side hook shown in red circle 2. Top side hook -Total 4 points Oblique direction CONNECTOR (4 POINTS) HOOK Hand down with this direction Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 125 Cap, mic top Motor EarJack VT Cam Rear Key, Assembly Gasket, LCD FPCB Deco rear Key, Assembly Main camera Receiver Shield can Screw 11ea Battery Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 126: Exploded View

    Camera Module MJN00 Tape MKC00 Window,Camera ACQ00 Cover Assembly MCQ01 Damper,Camera MCQ02 Damper,Camera MCQ03 Damper,Speaker MBL01 MJN03 Tape,Window EAX00 PCB,Sub EBP01 Camera Module EAB00 Speaker,Dual Mode Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

  • Page 127: Replacement Part List

    EDSY0010501 D9500 Diode,Switching EAN64227201 U3300 IC,MCP,eMMC EAM63450301 FL1001 Filter,Saw EAM63491001 FL1000 Filter,Saw EAB62950801 MIC6201 Microphone,Condenser EAG63772101 SW1000,SW1001,SW1002,SW1003 Connector,RF EAG64051601 CN9101 Connector,Terminal Block EAG64149801 CN9200 Connector,I/O Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 128 Filter,EMI/Power EAM62630501 FL5001,FL5003 Filter,EMI/Power SEVY0007902 VA9608,VA9609 Varistor SEVY0005402 VA6401 Varistor ABM75276402 ABM00 Can Assembly,Shield EBP62762101 EBP00 Camera Module ACQ88868302 ACQ00 Cover Assembly MCQ68825501 MCQ03 Damper,Speaker Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...
  • Page 129 EAB64228801 EAB010200 Earphone,Stereo EAD62377902 EAD010000 Cable,Assembly EAY62751801 EAY060000 Adapters MCK69135204 MCK004100 Cover,Battery MJN69928806 MJN107400 Tape,USP Film MBM65438701 MBM062600 Card,Quick Reference EAC63158307 EAC00 Rechargeable Battery,Lithium Ion Copyright ⓒ 2016 LG Electronics. Inc. All right http://eduwebcell.blogspot.com/ reserved. Only training and service purposes...

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