LG -K350ds Service Manual
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LG -K350ds Service Manual

LG -K350ds Service Manual

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MOBILE PHONE
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL
LG-K350ds
MODEL :

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Summary of Contents for LG LG-K350ds

  • Page 1 MOBILE PHONE SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE “SAFETY PRECAUTIONS” IN THIS MANUAL LG-K350ds MODEL :...

  • Page 3: Table Of Contents

    3.14 Checking USB Block 3.15 Checking Main/VT camera Block 3.16 Connectivity RF PART 4. BLOCK DIAGRAM ..........74 5. CIRCUIT DIAGRAM ..........80 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 4: 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 5: Performance

    1930 – 1990 LTE3 1710 – 1785 1805 – 1880 LTE7 2500 – 2570 2620 – 2690 LTE28 703 – 748 758 - 803 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 6: Hw Features

    CMOS image sensor Resolution 2592(H) X 1944(V) pixels. Image Scaling Down 5M(2560x1920), W4M(2560x1536)), 3M(1920x1920), 1M(1280x960) Format Image : JPG, Video : MP4 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 7 Max 40Mbps (SDIO Driver performance) Depend on environment 0 ~ 50m (depend on environment) 13. GPS type A-GPS, GLONASS 14. FM type FM Radio, 3.5pi Ear-jack Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 8: Rssi Display

    -Tx 10dBm(LCD Off) 260 mA↓@ Avg 400mA↓@ Avg 5. No SVC Mode 200mA↓ 200mA↓ 200mA↓ 6. Power Off Mode 1mA↓ 1mA↓ 1mA↓ Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 9: Battery Bar

    Low battery pop-up 15% , 5% Bar 10 -> Bar 9 48% -> 47% ※Cut Off Voltage : 3.45 ± 0.1 V Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 10: Sw Specification

    It depends on available memory a mount. Fixed Dial Number Service Dial Number My Profile (add/edit/delete are su Own Number pported) Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 11 Over the Web Game Calendar Memo There is no limitation on the number of items. It depends on available memory amo unt. World Clock Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 12 FM radio GPRS Class 12 EDGE Class 12(Rx only) Hold / Retrieve Conference Call Max. 6 DTMF Memo pad SyncML Google Hangout Email Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 13: Trouble Shooting

    XO Circuit is OK. Is it 26MHz? Check next step The Problem may be Checking Flow Logic part Refer to Logic trouble shoot Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 14: Checking Transceiver Dc Power Supply Circuit Block

    The Problem may be Check TP2 TP1(2.8V) Logic part Refer to +1.8V_RF is OK? Logic trouble shoot TP2(1.8V) Check next step Image TP2(1.8V) U5001 TP1(2.8V) Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 15: Checking Dc-Dc Block

    Refer to Logic trouble shoot Check TP2 Check U4100 Physical Damage 0.5V ≤ TP2 ≤ 4.2V ? or soldering condition Check next step Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 16: Asm(Antenna Switch Module) Block

    Refer to Logic trouble shoot (3.9V≤TP2 ≤4.2V) U3001 NOT GOOD Circuit Diagram Check U2001 physical Damage Replace U2001 or soldering condition Check Next step Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 17 Refer to Logic trouble (1.7V≤TP2 ≤1.9V) shoot Circuit Diagram NOT GOOD Check U2001 physical Damage Replace U2001 or soldering condition Check Next step Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only 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 LGE Internal Use Only reserved. Only training and service purposes...
  • Page 19 3.5 GSM RF PART 3.5.1 GSM RF Part RX RF PATH GSM850 RX PATH GSM900 RX PATH GSM1800 RX PATH GSM1900 RX PATH Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 20 START Check TP1 Check SW 1001 Signal exist? Soldering U2001 Check TP2 Check U2001 Signal exist? Soldering Check next step Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 21 Checking Flow START FL2005 Check TP1/2 Replace U3001 Signal exist? FL2004 Check TP3/4 Replace FL2004/ Signal exist? FL2005 U3001 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 22 START Check TP1 Check SW 1002 Signal exist? Soldering U2001 Check TP2 Check U2001 Signal exist? Soldering Check next step Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 23 Checking Flow START FL2007 Check TP1/2 Replace U3001 Signal exist? FL2006 Check TP3/4 Replace FL2006/ Signal exist? FL2007 U3001 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 24 3.5 GSM RF PART 3.5.6 GSM RF Part TX RF PATH GSM850 TX PATH GSM900 TX PATH GSM1800 TX PATH GSM1900 TX PATH Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 25 +VPW R OK? U4001 Check Logic part Circuit Diagram Check DC-DC Power Check TP2 Block 1.5V≤TP2≤ 2V? Refer to 1.8V Check Next step Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 26 3.5 GSM RF PART 3.5.8 Checking RF Signal TX path(GSM850/900) Image Checking Flow START Check TP1 Replace U5001 Signal exist? U3001 Replace U3001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 27 3.5 GSM RF PART 3.5.9 Checking RF Signal TX path(GSM1800/1900) Image Checking Flow START Check TP1 Replace U5001 Signal exist? U3001 Replace U3001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 28: 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 LGE Internal Use Only reserved. Only training and service purposes...
  • Page 29 3.6.1 WCDMA RF Part RX RF PATH WCDMA B5 RX PATH WCDMA B8 RX PATH WCDMA B1 RX PATH WCDMA B2 RX PATH Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 30 Image Checking Flow START Check TP1 Replace U3001 Signal exist? FL2008 Check TP2 Replace FL2008 Signal exist? U3001 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 31 Image Checking Flow START Check TP1/2 Replace U3001 Signal exist? Replace FL2004/ Check TP3/4 FL2005 Signal exist? U3001 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 32 3.6.4 WCDMA RF Part TX RF PATH WCDMA B5 TX PATH WCDMA B8 TX PATH WCDMA B1 TX PATH WCDMA B2 TX PATH Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 33 3.6.5 Checking RF Signal TX path(WCDMA B1) Image Checking Flow START Check TP1 Signal exist? Replace U5001 (over -62 dBm) Check Next step U4001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 34 Checking Flow START U4001 Check TP2 U5001 FL2008 Replace U4001 Signal exist? Check TP3 Replace FL2008 Signal exist? U3001 Replace U3001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 35 3.6.7 Checking RF Signal TX path(WCDMA B5/8) Checking Flow Image START Check TP1 Signal exist? Replace U5001 (over -62 dBm) U4001 Check Next step Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 36 3.6.8 Checking RF Signal TX path(WCDMA B5/8) Checking Flow Circuit Diagram START Check TP2/3 Replace U4001 Signal exist? Check Next step Image U4001 U5001 U3001 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 37 3.6.9 Checking RF Signal TX path(WCDMA B5/8) Image Checking Flow U5001 START U4001 Check TP4/5 Signal exist? Replace FL2008 U3001 Replace U3001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 38: 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 LGE Internal Use Only reserved. Only training and service purposes...
  • Page 39 3.7 LTE RF PART 3.7.1 LTE RF Part RX RF PATH LTE B3 RX PATH LTE B7 RX PATH LTE B20 RX PATH Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 40 Image START U4001 U5001 Check TP1 Replace U3001 Signal exist? FL2007 Check TP2 Replace FL2007 Signal exist? U3001 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 41: Troubleshooting

    START FL3005 U4001 U5001 Check TP1 Replace U3001 Signal exist? Check TP2 Replace FL3005 Signal exist? U3001 Check next step Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 42 Checking Flow FL3003 START U4001 U5001 Check TP3 Replace FL3003 Signal exist? Check TP4 Replace FL3004 Signal exist? U3001 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 43 Signal exist? FL2002 U4001 U5001 Check TP2 Replace FL2003 Signal exist? FL2003 Check TP3 Replace U3001 Signal exist? FL2002 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 44 Signal exist? U4001 U5001 Check TP2 Replace FL2001 FL2001 Signal exist? Check TP3 Replace Signal exist? U3001 FL2002 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 45: Lge Internal Use Only

    3.7 LTE RF PART 3.7.7 LTE RF Part DRX RF PATH LTE B3 DRX PATH LTE B7 DRX PATH LTE B20 DRX PATH Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 46 Circuit Diagram Check TP2 Signal exist? FL9202 Replace Check TP3 Signal exist? FL1012 Circuit Diagram Replace Check TP4 Signal exist? FL1013 Replace U5001 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 47 Replace FL6003 FL6003 Signal exist? Check TP2 Replace U1002 Signal exist? Check TP3 Replace FL1109 Signal exist? U1002 FL1109 Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 48 Checking Flow Image START SW1004 Check TP1 Replace SW 1003 Signal exist? FL1004 Check TP2 Replace FL1004 Signal exist? Replace U5001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 49 3.7 LTE RF PART 3.7.11 Checking RF Signal DRX path(LTE B28) LTE B3 TX PATH LTE B7 TX PATH LTE B28 TX PATH Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 50 3.7.12 Checking RF Signal TX path(LTE B3) Image Checking Flow START Check TP1 Signal exist? Replace U5001 (over -62 dBm) Check Next step U4001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 51 Checking Flow U4001 U5001 START FL2007 Check TP2 Replace U4001 Signal exist? Check TP3 Replace Signal exist? FL2007 U3001 Replace U3001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 52 3.7.14 Checking RF Signal TX path(LTE B7) Checking Flow Image START Check TP1 Signal exist? Replace U5001 (over -62 dBm) Check Next step U4001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 53 Checking Flow U5001 START FL2007 Check TP2 U4001 Replace U4001 Signal exist? Check TP3 Replace FL3005 Signal exist? U3001 Replace U3001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 54 3.7.16 Checking RF Signal TX path(LTE B28) Image Checking Flow START Check TP1 Signal exist? Replace U5001 (over -62 dBm) U4001 Check Next step Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 55: Troubleshooting

    U5001 START Check TP2/3 Replace U4001 Signal exist? FL2001 FL2003 Replace FL2003/ Check TP4/5 FL2001 Signal exist? U3001 Replace U3001 Circuit Diagram Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 56: Power

    (Check MT6328) Change MT6735 Core DC/DC VProc DC/DC Return to Start Inductor(L4132) Check Battery connector(CN9201) Inductor(L4130) 32K Sleep Clock Out (C4124) BATTERY CONNECTOR(CN9201) Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 57 Checking Power signal (Battery connector, Power Key, PMIC Regulator) Circuit Diagram BATTERY CONNECTOR(CN9101) PWR KEY(R4101) 32K Sleep Clock Out (C4124) Core DC/DC INDUCTOR(L4132) IO DC/DC Inductor(L4103) Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 58: Charger

    4.9V(or 5.0V) Is it charging properly After turning on? Change the Charging IC ( U4700 ) I/O connector(CN9200) Change the Main PCB Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 59: Audio Block

    RCV? Circuit Diagram Change RCV Module? Check Main PCB. (L6800, L6801 ) via Loopback mode Voice OK? Change Main Board Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 60 Hear the sound to the Speaker? Change Speaker Module? Circuit Diagram Check Main PCB. (L6700, L6701, ANT6200, ANT6201) Speaker Sound OK? Change Main Board Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 61 Mic works well? Reconnect or change Mic Voice signal OK? Change MT6328(U4100). Mic works well? Change Main Board Check FB6900, VMIC voltage level (C6903) Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 62 Reconnect or change Mic Voice signal OK? Change MT6328(U4100). Mic works well? Change Main Board Check FB6903, , VMIC voltage level (C6910) Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 63 Yes, but still not works Change MT6328(U4100). Mic works well? Change Main Board Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 64 Check the left signal and Circuit Diagram detection line short when headset inserted? Yes, but still not works Change MT6625L(CN6814). Mic works well? Change Main Board Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 65: Checking Lcd Block

    LCD display is OK ? Check LCD Power TP1~TP3 Change the LCD Module MIPI CLK(TP4~5) Change the Main Board The LCD works Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 66: Lge Internal Use Only

    The LCD control signals are generated by MT6735. Its interface is MIPI having four data lanes and one clock lane. Circuit Diagram Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 67: Checking Touch Block

    Signal Line (TP7601~TP7604) Touch Works OK? Change Main Board Check Touch Module Connector Touch Works OK? Change Font A’ssy Touch Woks OK ? Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 68: Checking Accelmeter+Compass Sensor Block

    Check the sensor function Function is OK? Circuit Diagram Calibration OK? Change the Sensor IC(U8100) Function is OK? Change the main board Function is OK? Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 69 Object moved at the Proximity sensor Circuit Diagram LCD off? Power (C8400) Check power (C8400) Output work well? Change the main board Function is OK? Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 70: Checking Usb Block

    Connection OK? Change I/O connector(CN9200) I/O connector(CN9200) Is the signal ok for USB+ & - ? Change AP( U2100 ) Change the Main Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 71: Checking Main/Vt Camera Block

    Circuit Diagram TP1 TP4 TP6 Change the Check the camera signals Main board MCLK(TP5)& I2C(TP6,TP7) Change the Camera Camera is OK ? Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 72 Check power supply (TP4~TP6) Circuit Diagram Check the camera signals Change the MCLK(TP1)&I2C(TP2,TP3) Main board Change the Camera Camera is OK ? Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 73: Connectivity Rf Part

    Signal of WiFi_11b exist? Replace U6001 Check Check TP2 Component Signal of WiFi_11b exist? MT6625L above RF signal path Circuit Diagram Check next step Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 74 Signal exist? GPS 2.8V Replace u and Check FL6002 Check TP2 Component Signal exist? above RF signal path Check next step Circuit Diagram Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 75: Block Diagram

    DRX B40 DRX_HB2(B40) GPS & DRX B7 DRX B7 B17/20/28A/28 DRX B7 LNA Module DRX_HB3(B7) DRX B17/B20/B28A/28B DRX B17/B20/B28A/28B LNA Module DRX_LB2(B17,B20, B28) LGE Internal Use Only Copyright ⓒ 2015 LG Electronics. Inc. All right reserved. Only training and service purposes...

  • Page 76: Power Block Diagram

    VNEG IOVDD AVDD VDD VOUT BACK BT/FM/ Touch MCU LCD LDO CAMERA LIGHT IC CAMER SIM2 GPS LNA SIM1 U3001 GPS/WIFI U4001 Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 77 MSDC1_CLK DAT[0:1] SDCARD_CLK MSDC1_CMD CLK2 SDCARD_CMD MSDC1_DAT2 SDCARD_DATA2 MSDC1_DAT3 DAT2 SDCARD_DATA3 CD/DATA3 USIM2 J1011 3V0_MTK_USIM2 VSIM2 SIM2_SRST SIM2_RESET_N SIM2_SCLK SIM2_CLK SIM2_SIO SIM2_DATA Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 78 +1V8_MTK_CAM_IOVDD VT CAM (FF) VCAMIO VT_CAM_MIPI_CLK_N MIPI_RCN_A 30 PIN CON. +2V8_MTK_VCAMA VT_CAM_MIPI_CLK_P VCAMA 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 GPIO_63 Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 79 VBAT CN9100 CS_N CS_N BACK KEY KEYPAD_SENSE_1 PM_KYPD_PWR_N KPCOL0 PWRKEY KPCOL1 PWR/UP/DOWN KEYPAD_SENSE_2 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 ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 80 SDDATA BT_WLAN_ANT CONN_SPI_EN RF2G WB_SEN ANT 6 GPS/DRX B7 LNA Module GPS_IN GPS_RFIN WLAN_CLK XO_IN U5001 MT6169 DRX_B7 DRX_B7 LNA Module DRX_HB3(B7) Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 81: Circuit Diagram

    5.CIRCUIT DIAGRAM CIRCUIT DIAGRAM Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 82 FL1005 L1043 C1070 1.8n 1.8n C1043 L1017 L1016 B40 DRX U_BP L1018 C1044 DNI DRX_HB2_N ANT1_TUN_CTL3 ANT1_TUN_CTL1 ANT1_TUN_CTL2 R1021 C1080 C1081 LG Electronics TITLE Schematic1 SIZE DWG NO LGE Internal Use Only DRA WN BY Date User Name r aw...
  • Page 83 100p C3018 GND5 B7_PRX_LNA_EN BGA7H1N6 FL3003 C3017 C3015 GND1 GND4 PRX_HB1_N 0.5p C3019 1.2n GND2 GND3 C3013 LG Electronics Changed Net Name 08/05 100p TITLE Schematic1 SIZE LGE Internal Use Only DWG NO User Name SHEET Date DRA WN BY...
  • Page 84 DRX_HB3_P GND15 X5001 RFIP2_HB3 DRX_HB3_N GND16 RFIN2_HB3 1XXC26000MAB GND17 GND18 GND19 XTAL2 GND20 VCONT XTAL1 C5009 0.1u C5010 C5011 0.1u LG Electronics TITLE MODEL NAME SIZE DWG NO PDM NUMBER SHEET Date DRA WN BY User Name Drawing Date 1_WTR1605L...
  • Page 85 100K 0.680 GPIO_124/BPI_BUS21 GPIO_125/BPI_BUS22 GPIO_126/BPI_BUS23 100K 100K 0.900 GPIO_127/BPI_BUS24 GPIO_128/BPI_BUS25 100K 0.000 GPIO_129/BPI_BUS26 R2243 GPIO_130/BPI_BUS27 100K 1.800 LG Electronics TITLE Schematic1 LGE Internal Use Only SIZE DWG N O PDM NUMBER SHEET Date DRA WN BY User Name Drawing Date...
  • Page 86 C2361 R2306 100K C2362 4.7u Output voltage changed : 1.15V - 141121 - Vout = Vfb x (1+R1/R2) LG Electronics - C2363 x R2304 = 3x10^6 - 6x10^6 TITLE Schematic1 LGE Internal Use Only SIZE DWG N O PDM NUMBER...
  • Page 87 VDD2_9 VSS47 VSS48 VDD2_10 VSS49 VDD2_11 VSS50 VDD2_12 VDD2_13 VDD2_14 VDD2_15 VDD2_16 VDD2_17 VDD2_18 LG Electronics R3309 240 TOL=0.01 TITLE Schematic1 SIZE DWG NO LGE Internal Use Only PDM NUMBER SHEET DRA WN BY Date User Name Drawing Date KEEP CLOSE TO THE PIN...
  • Page 88 CHG_D_M CHG_DM CHG_D_P CHG_DP CS_N CS_N 4 mil trace good shielding (differential) CS_P CS_P ISINK0 ISINK1 AVSS45_ISINK LG Electronics TITLE Schematic1 LGE Internal Use Only SIZE DWG N O PDM NUMBER SHEET Date DRA WN BY User Name Drawing Date...
  • Page 89 1.05 L/W =1500/18 VIO18 L/W =2800/20 VCAMD 0.9/1.0/1.1/1.22/1.3/1.5 1.22 L/W =2800/16 DVDD18_DIG L/W =800/4 VRTC L/W =800/4 LG Electronics TITLE Schematic1 LGE Internal Use Only SIZE DWG N O PDM NUMBER SHEET Date DRA WN BY User Name Drawing Date...

  • Page 90: Nfc Antenna

    TP5205 VDD_VCO NFC_TX2 FEED VDDSWP_1 C5206 DNI SWPIO_1 VDDA_CAP VDD_ANT C5220 DNI ZD5201 C5208 C5209 26M_NFC_CLK LG Electronics C5210 TITLE Schematic1 LGE Internal Use Only SIZE DWG N O PDM NUMBER SHEET Date DRA WN BY User Name Drawing Date...
  • Page 91 GND Close to MIC 1. The value of the component can be changed after test. 2. Developer should change parameter setting by according to existence of shunt capacitor ex) WCD9310 // 80-N1622-91 Rev. E LG Electronics TITLE MSM8926_X5_GLOBAL LGE Internal Use Only...
  • Page 92 -. EBP62722501 ( BYD ) VT_CAM_MIPI_DATA1_P C7601 C7602 C7603 C7600 VT_CAM_MIPI_DATA1_N (AVDD) 100p 1u VT_CAM_MIPI_DATA0_P VT_CAM_MIPI_DATA0_N VT_CAM_MIPI_CLK_P VT_CAM_MIPI_CLK_N ENBY0040701 LG Electronics TITLE MODEL NAME SIZE DWG NO LGE Internal Use Only PDM NUMBER SHEET Date DRA WN BY User Name Drawing Date...
  • Page 93 JTAG_TMS JTAG_TDO [ C-Clip ] SC101 SC102 SC103 SC104 SC105 SC106 SC107 SC108 SC109 SC110 MBV6 2321701 LG Electronics TITLE MSM8926_X5_GLOBAL LGE Internal Use Only SIZE PDM NUMBER DWG NO DRA WN BY SHEET Date User Name Sensor Drawing Date...
  • Page 94 3. Do not connect serial component to SD card power, voltage drop can arise at Power line. LAYER_ALIGN DLA_1 DLA_2 DLA_7 DLA_3 DLA_6 DLA_4 DLA_5 LG Electronics TITLE MODEL NAME SIZE DWG NO LGE Internal Use Only PDM NUMBER SHEET Date...
  • Page 95 6. BGA PIN MAP U2100_MT6735_IC,Digital Baseband Processor(Top View) U3300_H9TQ17A8GTMCUR,IC,MCP.eMMC(Top View) O Not used O Not used U4100_MT6328_IC,PMIC (Top View) O Not used Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 96: Pcb Layout

    7. PCB LAYOUT LG-K350ds-MAIN_BOT BOT-1 BOT-2 BOT-4 BOT-3 Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 97 No Power on CN9100 – Battery Connector No Power on FL1003 – B20 LNA B20 No service U8100 – Acceleration/Compass No Sensor Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 98: Lge Internal Use Only

    SIM/ SD card service No LCD/ No Flash CN9501/CN9502 – Motor Contact No Vibrator fuction U5200 – NFC IC No NFC service Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 99 No service FL1109 – B7 Filter No B7 DRX function FL7104/ FL7103/ FL7102 LCD EMI filter No LCD CN7100 LCD Connector No LCD Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 100 No Ear-mic function FL9201 – USB EMI filter No USB MIC6901 - MIC CN9200 – USB Connector No MIC(Main) No USB connection No Charging Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 103: Hidden Menu

     Each test item can be selected and one after another. performed by user.  Continuous information on the menu, giving you ability test. Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 104 3. Display Check Test (1) 4. Display Check Test (2) 5. Ring Test 6. Vibrator Test 7. Motion Sensor Test 8. Loop Back Test Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 105 9. GPS/BT/WiFi Test 10. Touch Draw Test 11. Camera Test (Main) 12. Camcorder Test 13. Camera Test (VT) 14. FM Radio Test Copyright ⓒ 2015 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 106 3. USB D/L Cable setting 4. Flash tool D/L setting ※ If you want more information, please refer LGST ServiceCenter Tool’s Notification“Download User Guide”. Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 107 3. Calibration Cable setting 4. Tachyon setting ※ If you want more information, please refer LGST ServiceCenter Tool’s Notification “RF Calibration User Guide”. Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 108: Disassemble Guide

    6. Disassemble HW Parts (4ea) 7. LCD Disassemble 5. Disassemble Main PCB 8. Complete Disassembling (by Heating machine) ① ① ② ③ ④ Disassemble Hooks ② Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 109: Exploded View

    Can,Shield EAB00 Speaker,Dual Mode ACQ00 Cover Assembly MBL02 ACQ02 Cover Assembly,Battery MCQ00 Damper,Camera MCQ04 Damper,Motor EBR00 PCB Assembly,Main EAC00 Rechargeable Battery,Lithium Ion Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

  • Page 110: Replacement Part List

    MJN061100 MBG66103501 Button MBG000001 MKC66019001 Window,Camera MKC00 MJN69947701 Tape,Camera MJN00 EAA64347101 PIFA Antenna,Multiple EAA00 ACQ88697001 Cover Assembly,Bar ACQ003400 ACQ88830201 Cover Assembly ACQ00 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 111 MCQ000000 EBR81969401 PCB Assembly,Main,SMT EBR071800 EBR82579601 PCB Assembly,Main,SMT Bottom EBR071600 EAM63170001 Filter,EMI/Power FL7102,FL7103 EAM63290701 Filter,Duplexer FL2003 EAM63390701 Filter,Saw FL2006 EAM63431001 Filter,Duplexer FL2001 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 112 X6001 EBC61977001 Resistor,Chip R4103 EBC62035901 Resistor,Chip R4131 EBG62665701 Thermistor,NTC PT2200,PT2201 ECCH0000115 Capacitor,Ceramic,Chip C9203,C9605,C9606,C9607 ECCH0000127 Capacitor,Ceramic,Chip C7103 ECCH0000198 Capacitor,Ceramic,Chip C2350,C2351,C3304,C3322,C4113,C5001,C6205,C7327 ECCH0004904 Capacitor,Ceramic,Chip C2332,C3314,C3321,C4148,C4153,C7326,C7600,C7601,C7602,C8103,C9910 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 113 R2202,R2203 ERHY0009519 Resistor,Chip R4002 ERHY0009522 Resistor,Chip R6624 ERHY0009526 Resistor,Chip R2200,R2201,R2204,R2205,R2241,R2242,R8400,R9132 ERHY0009527 Resistor,Chip R2243,R6622 ERHY0009531 Resistor,Chip R5005 ERHY0017901 Resistor,Chip R6412 ERHY0035601 Resistor,Chip R9124 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 114 C9112 EAG63772101 Connector,RF SW1001,SW1002,SW1003,SW1004 EAG64149801 Connector,I/O CN9200 EAG64651301 C-Clip ANT1001,ANT1002,ANT1003,ANT1004 EAG64729801 Connector,BtoB CN9900 EAG64751101 Connector,BtoB CN7100 EAG64771301 C-Clip ANT6200,ANT6201 EAG64771401 C-Clip CN9605,CN9606,CN9607 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 115 C1025,C6006,L1033 EAP62226001 Inductor,Multilayer,Chip C2013 EAP62226101 Inductor,Multilayer,Chip C1026,C1062,C1076,L1046 EAP62226201 Inductor,Multilayer,Chip C4020,L1049,L2003,L2008 EAP62226301 Inductor,Multilayer,Chip C1033,L1025,L2012,L2015,L2016,L6007 EAE63162401 Capacitor,Ceramic,Chip C4405 EAP63586201 Inductor,Multilayer,Chip R1010 EAP62226401 Inductor,Multilayer,Chip C2011,L1042,L2023,L4009,L6004,L6011 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...
  • Page 116 EAC63198407 Rechargeable Battery,Lithium Ion EAC00 EAD62377902 Cable,Assembly EAD010000 MBM65477901 Card,Quick Reference MBM062600 MFL69443501 Manual,Operation MFL053800 MJN69987201 Tape,USP Film MJN107400 AGF78278904 Package Assembly AGF000000 Copyright ⓒ 2016 LG Electronics. Inc. All right LGE Internal Use Only reserved. Only training and service purposes...

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