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LG GU280 Service Manual
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LG GU280 Service Manual

LG GU280 Service Manual

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Download this manual See also: User Manual
Internal Use Only
Service Manual
GU280/GU285
Date: October, 2009 / Issue 1.0

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Summary of Contents for LG GU280

  • Page 1 Internal Use Only Service Manual GU280/GU285 Date: October, 2009 / Issue 1.0...

  • Page 2: Table Of Contents

    4.16 Receiver Path ............75 4.17 Headset path............77 4.18 Speaker phone path ..........79 4.19 Main microphone ............81 4.20 Headset microphone ..........83 Copyright © 2009 LG Electronics. Inc. All right reserved. - 3 - LGE Internal Use Only Only for training and service purposes...

  • Page 3: Only For Training And Service Purposes

    LGE Internal Use Only - 4 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 4: Introduction

    This model complies with rules regarding radiation and radio frequency emission as defined by local regulatory agencies. In accordance with these agencies, you may be required to provide information such as the following to the end user. Copyright © 2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only...

  • Page 5: Only For Training And Service Purposes

    • When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only - 6 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 6: Performance

    QSC6240 is an one-chip solution(DB + AB + RF + Analog Baseband QSC6240 : Qualcomm RF Chip QSC6240 : Qualcomm Copyright © 2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...

  • Page 7: Feature

    E2 (PCS) PCS 1900 : 26 dBm E2 (DCS) GPRS compatibility GPRS Class 12 EDGE compatibility EDGE Class 12 LGE Internal Use Only - 8 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 8: Only For Training And Service Purposes

    Voice Recording Speaker Phone mode Support Travel Adapter CDROM Stereo Headset Option Data Cable Option T-Flash (External Memory) Copyright © 2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 9: Hw Spec

    : -98dBm/-96dBm (2.439%) AM Suppression -98dBm/-96dBm (2.439%) -GSM : -31dBm - DCS : -29dBm ± 0.5T Timing Advance LGE Internal Use Only - 10 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 10: Only For Training And Service Purposes

    < 17.5 %, when Pout ≥ -20 dBm Error Vector Magnitude < -15 dB at Pout -20 dBm Peak Code Domain Error Copyright © 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...

  • Page 11: Only For Training And Service Purposes

    +1.5/4 -0.5/+0.5 -0.5/+0.5 -0.5/+0.5 Inner Loop Power Control -0.5/-1.5 -1/-3 -1.5/-4 In Uplink group(10equal command group) +8/+12 +16/+24 LGE Internal Use Only - 12 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 12: Technical Brief

    3. Technical Brief 3.1. General Description The RF platform of GU280 supports two different communication modes (WCDMA/GSM modes) including five communication bands (W2100/W850/GSM850/GSM900/GSM1800/GSM1900). The all the RF blocks can be divided into three main parts, which are a WCDMA part, a GSM, and a Antenna switch module.

  • Page 13: Wcdma Part

    . Power class : Power class 3 (+24dBm) in Band II and V . Zero-IF Receiver.No IF filter needed . Direct IQ modulation transmitter Figure 1.2.1. WCDMA RF structure LGE Internal Use Only - 14 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 14: Only For Training And Service Purposes

    The three UMTS couplers (one for each band) use a daisy-chain configuration that allows them to share the single, on-chip power detector circuit. Copyright © 2009 LG Electronics. Inc. All right reserved. - 15 -...

  • Page 15: Only For Training And Service Purposes

    Both filter outputs are buffered to drive their analog-to-digital converters for digitization. The digital baseband outputs are routed to QSC baseband circuits for further processing. LGE Internal Use Only - 16 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 16: Only For Training And Service Purposes

    MMIC (microwave monolithic integrated circuit) technology offering state-of-the-artreliability, temperature stability and ruggedness. Figure 1.2.3.1 ACPM-5201 Functional Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...

  • Page 17: Only For Training And Service Purposes

    L108 33p WCDMA_PA_ON1 WLNA_LB_IN_M C136 R109 PWR_DET L107 C124 0.5p L109 33p WLNA_LB_IN_P Figure 1.2.3.2 WCDMA PAM schematic LGE Internal Use Only - 18 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 18: Edge/Gprs/Gsm Rf Block

    DAC output signal is routed to GSM PA module for ramping the PA up or down, or to the transmitter signal path for data transmission. Copyright © 2009 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only...

  • Page 19: Only For Training And Service Purposes

    The lower example uses two LNAs for quad-band GSM operation (one low band and one high band), with two-way SAW filters between the antenna switch and the QSC inputs for each band type. LGE Internal Use Only - 20 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 20: Only For Training And Service Purposes

    3. Technical Brief Figure 1.3.2.1 QSC GSM receiver signal paths functional diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...

  • Page 21: Only For Training And Service Purposes

    Ultimately the loop forces the error to approach zero and the PLL is phase and frequency locked. LGE Internal Use Only - 22 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 22: Only For Training And Service Purposes

    ■ Integration of ESD protection at Ant port to 8kV acc. IEC-61000-4-2 (contact discharge) Figure 1.3.4.1 Block diagram of FEM Copyright © 2009 LG Electronics. Inc. All right reserved. - 23 - LGE Internal Use Only Only for training and service purposes...

  • Page 23: Control Flow

    The control flow for the RF system is shown in Figure 1.5.1. Figure 1.5.1 Block diagram of FEM LGE Internal Use Only - 24 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 24: General Description

    3.6 General Description QSC6240 has all eight major functional blocks as like Figure 2.1 Figure 2.1 QSC6240 Base band block Copyright © 2009 LG Electronics. Inc. All right reserved. - 25 - LGE Internal Use Only Only for training and service purposes...

  • Page 25: Only For Training And Service Purposes

    The modem subsystem includes the QDSP4u8 digital signal processor (mDSP). The application subsystem includes the QDSP4u8 application digital signal processor(aDSP). Figure 2.1.1 Processors and bus architecture LGE Internal Use Only - 26 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 26: Only For Training And Service Purposes

    SD card) MICROSD_DETECT SD card) MICROSD_DETECT USIM_DATA USIM_DATA MICROSD_DATA[0:3] MICROSD_DATA[0:3] Figure 2.1.2.1 The memory control blocks of GU280 Copyright © 2009 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Only for training and service purposes...

  • Page 27: Only For Training And Service Purposes

    LCD_RST EBI2_WE_N LCD 2.0” LCD_ADS LCD_CS_N EBI2_DATA[15:0] (176x220,QCIF) LCD_IF(2:1) QSC6240 WLED_PWR Figure 2.1.2.2 The LCD interfaces of GU280 LGE Internal Use Only - 28 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 28: Only For Training And Service Purposes

    – SPI (master only) for peripheral support – Two secure digital controllers — WLAN and secure digital (SD) cards Figure 2.1.3 The connectivity of GU280 Copyright © 2009 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only...

  • Page 29: Only For Training And Service Purposes

    GPIO_6 MICROSD_DATA[3] GPIO_5 MICROSD_DATA[2] GPIO_4 GPIO_3 MICROSD_DATA[1] MICROSD_DATA[0] GPIO_2 GPIO_1 MICROSD_CMD MICROSD_DETECT GPIO_0 Figure 2.1.4 GPIOs of GU280 LGE Internal Use Only - 30 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 30: Only For Training And Service Purposes

    TCXO (or XO) source for their operating modes, plus the 32.768 kHz oscillator for their sleep modes Figure 2.1.6 Clock block basic architecture of QSC6240 Copyright © 2009 LG Electronics. Inc. All right reserved. - 31 - LGE Internal Use Only...

  • Page 31: Only For Training And Service Purposes

    QSC6240 device — greater resolution, higher capture and streaming rates, etc. Figure 2.1.7.1 Camera interface connections LGE Internal Use Only - 32 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 32: Only For Training And Service Purposes

    The MDP reduces redundant circuitry and offloads the ARM and aDSP from memory-transfer operations and a certain set of graphics and video operations Figure 2.1.7.2.1 MDP-to-LCD interface functional block diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 33 - LGE Internal Use Only...

  • Page 33: Only For Training And Service Purposes

    EBI2_DATA[5] EBI2_DATA[4] EBI2_DATA[3] EBI2_DATA[2] EBI2_DATA[1] EBI2_DATA[0] LCD_MAKER_ID LCD_LDO_1.8V LCD_LDO_2.8V VA110 EVLC14S02050 Figure 2.1.7.2.2 The LCD interface of GU280 LGE Internal Use Only - 34 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 34: Power Management

    Voltage, current, and thermal control loops Automated recovery from sudden momentary power loss (requires external32.768 kHz crystal) Figure 2.2.1 Input circuits schematic diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 35 - LGE Internal Use Only Only for training and service purposes...

  • Page 35: Only For Training And Service Purposes

    All regulated output voltages are programmable. All regulators can be set to a low-power mode except the VREG_USB_3P3 and VREG_NCP circuits LGE Internal Use Only - 36 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 36: Only For Training And Service Purposes

    3. VREG_MSMP powers key internal circuits and should be kept on at its default voltage setting. 4. All regulators have default output voltage settings, even if they default to an off condition. Copyright © 2009 LG Electronics. Inc. All right reserved. - 37 -...

  • Page 37: Trouble Shooting

    GSM Low Band Switching Tx SAW Filter (GSM850/900) EPCOS X101 VCTCXO(19.2MHz) DAISHINKU SW101 RF Switch connector Dong Eun LGE Internal Use Only - 38 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 38: Rf Path

    Tx Path Rx Path Tx / Rx Path 4.2.2 GSM path Tx Path Rx Path Tx / Rx Path Copyright © 2009 LG Electronics. Inc. All right reserved. - 39 - LGE Internal Use Only Only for training and service purposes...

  • Page 39: Trouble Shooting Of Gsm Part (Gsm850/900/1800/1900)

    (SW101 / FL105) U201 3. Check Rx Part FL104 U102 FL108 FL105 U101 4. Check Tx Part X101 FL106FL103 SW101 LGE Internal Use Only - 40 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 40 Circuit Diagram VREG_TCXO_2.85V C107 C106 100n X101 DSA321SCA R113 19M_XTAL_IN R104 TRK_LO_ADJ VCONT 19.2MHz C108 C179 Close to QSC Copyright © 2009 LG Electronics. Inc. All right reserved. - 41 - LGE Internal Use Only Only for training and service purposes...
  • Page 41 Check TP3 of SW101 with RF Cable TP2 Signal Replace SW101 same as TP7? Check TP1 Check U201 =2.85V? LGE Internal Use Only - 42 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 42 GSM850/900 Tx GSM1800/1900 Tx WCDMA 850 WCDMA 1900 WCDMA 2100 GSM850 Rx EGSM Rx DCS Rx PCS Rx Copyright © 2009 LG Electronics. Inc. All right reserved. - 43 - LGE Internal Use Only Only for training and service purposes...
  • Page 43 Soldering of TPs GSM/DCS/PCS Rx is OK. Rx Still has problem? Re-download & Calibration Checking Points TP2 TP3 LGE Internal Use Only - 44 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 44 ACPM-5305 U104 L108 33p WCDMA_PA_ON1 WLNA_LB_IN_M C136 R109 PWR_DET L107 C124 TP1 : GSM850 0.5p L109 33p WLNA_LB_IN_P Copyright © 2009 LG Electronics. Inc. All right reserved. - 45 - LGE Internal Use Only Only for training and service purposes...
  • Page 45 The power of pin1, pin8 Check U201 DCS, PCS 29dBm Is over 0dBm? over? Re-download & Calibration Replace U101 Checking Points LGE Internal Use Only - 46 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 46 TX_GSM_LB VBATT ANT_SEL[2] R101 GSM_SW_MODE VRAMP GSM_PA_RAMP ANT_SEL[3] 2.2K L114 C152 C121 C103 100p 836.5MHz,25MHz Table.1 (TP4) (TP5) Copyright © 2009 LG Electronics. Inc. All right reserved. - 47 - LGE Internal Use Only Only for training and service purposes...

  • Page 47: Trouble Shooting Of Wcdma Part

    Setup Test Equipment Cell Power = -74dBm WCDMA Rx CH : 4407 Re-download & Calibration WCDMA Tx CH : 4182 LGE Internal Use Only - 48 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 48 4.4.1 Checking VCTCXO Refer to GSM Part (4.3.1) 4.4.2 Checking Mobile SW & FEM Refer to GSM Part (4.3.2) Copyright © 2009 LG Electronics. Inc. All right reserved. - 49 - LGE Internal Use Only Only for training and service purposes...

  • Page 49: Only For Training And Service Purposes

    Check TP2 Check FL105 About -27dBm? Check TP3 Check FL103 About -29dBm? FL106 Re-download & Calibration Checking Point LGE Internal Use Only - 50 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 50: Only For Training And Service Purposes

    836.5 MHz,881.5 MHz WCDMA_850/900 ACPM-5305 U104 L108 33p WCDMA_PA_ON1 WLNA_LB_IN_M C136 R109 PWR_DET L107 C124 0.5p L109 33p WLNA_LB_IN_P Copyright © 2009 LG Electronics. Inc. All right reserved. - 51 - LGE Internal Use Only Only for training and service purposes...

  • Page 51: Only For Training And Service Purposes

    Is Tx power exist? FL106 (>22dBm) Check TP9 Is Tx power exist? Check FL105 (>20dBm) Re-download & Calibration LGE Internal Use Only - 52 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 52: Only For Training And Service Purposes

    4. TROUBLE SHOOTING Checking Point Copyright © 2009 LG Electronics. Inc. All right reserved. - 53 - LGE Internal Use Only Only for training and service purposes...

  • Page 53: Only For Training And Service Purposes

    836.5 MHz,881.5 MHz WCDMA_850/900 ACPM-5305 U104 L108 33p WCDMA_PA_ON1 WLNA_LB_IN_M C136 R109 PWR_DET L107 C124 0.5p L109 33p WLNA_LB_IN_P LGE Internal Use Only - 54 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 54: Checking Bluetooth Block

    Is clock ok? 32.7KHz Change the X201 Change the X102 Is clock ok? 32MHz Change the Main board Copyright © 2009 LG Electronics. Inc. All right reserved. - 55 - LGE Internal Use Only Only for training and service purposes...

  • Page 55: Only For Training And Service Purposes

    RF_TXRX CLKREQ_OUT 2450MHz D2D_SLEEP_CLK ANTENNA_PAD TP101 ANT104 ANT103 C170 100p ANTENNA_PAD X102 DSX321G-32M L128 L127 32MHz C169 C168 LGE Internal Use Only - 56 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 56: Only For Training And Service Purposes

    4. TROUBLE SHOOTING [TP3] Wave D2D_SLEEP_CLK [TP4] BT_CLK Wave Copyright © 2009 LG Electronics. Inc. All right reserved. - 57 - LGE Internal Use Only Only for training and service purposes...

  • Page 57: Checking Fm Radio Block

    TP1,TP2 Change the main board Signals exist? Is clock ok? 32.768KHz Change the X201 Change the Main board LGE Internal Use Only - 58 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 58: Only For Training And Service Purposes

    FC-255 32.768KHz C235 C225 BUSSEL2 VREG_MSMP_2.6V DGND U501 BUSSEL1 AUDOR LINEIN_R_M TEA5991_UK RFGND AUDOL LINEIN_L_P FM_ANT C502 C501 Copyright © 2009 LG Electronics. Inc. All right reserved. - 59 - LGE Internal Use Only Only for training and service purposes...

  • Page 59: Only For Training And Service Purposes

    4. TROUBLE SHOOTING [TP3] Wave D2D_SLEEP_CLK LGE Internal Use Only - 60 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 60: Base Band Part

    Is clock ok? X201 : 32.768KHz Check the TCXO & Sleep Cystal C108 : 19M Change the main board Copyright © 2009 LG Electronics. Inc. All right reserved. - 61 - LGE Internal Use Only Only for training and service purposes...

  • Page 61: Only For Training And Service Purposes

    4. TROUBLE SHOOTING QSC6240 VREG_MSME VREG_MPLL VREG_USB2P6 VREG_MSMP VREG_RF1 VREG_RF2 VREG_MSMC VREG_TCXO _2.85V 19M_XTAL-IN : 19.2MHz X201: 32.768KHz LGE Internal Use Only - 62 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 62: Charger Troubleshooting

    Is the TA voltage 5.1V? Change TA Is it charging properly? Change the main board [ Charger Troubleshooting Flow ] Copyright © 2009 LG Electronics. Inc. All right reserved. - 63 - LGE Internal Use Only Only for training and service purposes...

  • Page 63: Usb Troubleshooting

    Check the USB cable Check the USB cable USB_DP is 3.3V ? Change the main board [ USB Troubleshooting Flow ] LGE Internal Use Only - 64 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 64: Only For Training And Service Purposes

    4. TROUBLE SHOOTING <Figure 3.7 Signal in USB connection> Copyright © 2009 LG Electronics. Inc. All right reserved. - 65 - LGE Internal Use Only Only for training and service purposes...

  • Page 65: Usim Detect Troubleshooting

    USIM_P_CLK & RST is run ? Change the SIM card Work well? Work well ? Change the Main board LGE Internal Use Only - 66 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 66: Only For Training And Service Purposes

    USIM R412 GCA26A-6S-H16-M-E1500 J401 GND1 USIM_RST USIM_DATA USIM_CLK GND5 GND2 GND4 GND3 VA408 EVLC18S02003 Figure.3.8 USIM part schemetics Copyright © 2009 LG Electronics. Inc. All right reserved. - 67 - LGE Internal Use Only Only for training and service purposes...

  • Page 67: Camera Troubleshooting

    Check the CAM_MCLK Change the Main board (FL605 Pin8) Change the camera Camera is OK Change the Main board LGE Internal Use Only - 68 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 68: Only For Training And Service Purposes

    4. TROUBLE SHOOTING [ MAIN Top] C604 C603 FL605/Pin 8 Copyright © 2009 LG Electronics. Inc. All right reserved. - 69 - LGE Internal Use Only Only for training and service purposes...

  • Page 69: Main Keypad Backlight Troubleshooting

    MAIN Key Backlight LED On Start Key press Check battery +VPWR is above 3.2V? Change the Main board LGE Internal Use Only - 70 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 70: Sub Keypad Backlight Troubleshooting

    +VPWR is above 3.2V? Check RA101 Change the FPCB below 0.8v OR KEY PCB Change the MAIN PCB LED ON ? Copyright © 2009 LG Electronics. Inc. All right reserved. - 71 - LGE Internal Use Only Only for training and service purposes...

  • Page 71: Only For Training And Service Purposes

    LD101 19-217UTD_S887-2_TR8 LD102 RA101 19-217UTD_S887-2_TR8 LD103 19-217UTD_S887-2_TR8 LD104 19-217UTD_S887-2_TR8 SUB_BACKLIGHT VA109 EVLC14S02050 RA101 [ KEY PCB BOTTOM ] LGE Internal Use Only - 72 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 72: Lcd Troubleshooting

    LCD display OK? Change the FPCB LCD display OK? Change SUB PCB LCD display OK? Change the Main Board Copyright © 2009 LG Electronics. Inc. All right reserved. - 73 - LGE Internal Use Only Only for training and service purposes...

  • Page 73: Vibrator

    1V? Change the FPCB Change vibrator or Change working? the Main PCB +VPWR MOTOR_POWER_N [ FPCB(near receiver) ] LGE Internal Use Only - 74 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 74: Receiver Path

    Can you hear the tone? The sine wave appears at Change the receiver FB110,FB111? Change the FPCB Change the Main board Copyright © 2009 LG Electronics. Inc. All right reserved. - 75 - LGE Internal Use Only Only for training and service purposes...

  • Page 75: Only For Training And Service Purposes

    4. TROUBLE SHOOTING RCV100 FB110,FB111 [FPCB] LGE Internal Use Only - 76 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 76: Headset Path

    Check the Audio Sub System Sine wave appears at Change the Main board C530,C531? Change the Main board Copyright © 2009 LG Electronics. Inc. All right reserved. - 77 - LGE Internal Use Only Only for training and service purposes...

  • Page 77: Only For Training And Service Purposes

    4. TROUBLE SHOOTING CN401 R404,R405 IC401 IC500 C530,C531 [ MAIN Bottom] LGE Internal Use Only - 78 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 78: Speaker Phone Path

    Sine wave appears at Change the Main board C519,C520? Check the Audio Sub System Change the Main board Copyright © 2009 LG Electronics. Inc. All right reserved. - 79 - LGE Internal Use Only Only for training and service purposes...

  • Page 79: Only For Training And Service Purposes

    4. TROUBLE SHOOTING CN501 FB501,FB502 IC500 C519,C520 [ MAIN Bottom ] LGE Internal Use Only - 80 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 80: Main Microphone

    Make sound to MIC Sine wave appears at Change the MIC C512? Change the Main board Work well? Copyright © 2009 LG Electronics. Inc. All right reserved. - 81 - LGE Internal Use Only Only for training and service purposes...

  • Page 81: Only For Training And Service Purposes

    4. TROUBLE SHOOTING C510 C512 [ MAIN Bottom] MIC501 MIC1P MICBIAS C508 C512 C506 SPM0410LR5H-QB C510 LGE Internal Use Only - 82 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 82: Headset Microphone

    Check the MUIC Sine wave appears at Change the Headset C406? Change the MAIN board Change the MAIN board Copyright © 2009 LG Electronics. Inc. All right reserved. - 83 - LGE Internal Use Only Only for training and service purposes...

  • Page 83: Only For Training And Service Purposes

    4. TROUBLE SHOOTING CN401 IC401 R414 C406 [ MAIN Bottom ] LGE Internal Use Only - 84 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 84: Downloading

    LGMDP is designed to be simple to use and easy enough for the beginner to upload executable images to the handset. LGMDP supports Windows 2000/XP where the LG (Ver 4.6 or later) USB modem driver is installed. Additionally, LGMDP allows multi downloading up to 9 handsets at the same time.

  • Page 85: Downloading Procedure

    When LGMDP starts When LGMDP starts, it will automatically select Select Port button to download new image file. LGE Internal Use Only - 86 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 86 Then click on the Connect button. (The port number(COM7) shall be different from that of the port number in the snapshot.) Copyright © 2009 LG Electronics. Inc. All right reserved. - 87 - LGE Internal Use Only Only for training and service purposes...
  • Page 87 While the images are transmitted from PC to the handset, a progressive bar (Red box) indicating the degree of transmission of data is displayed. LGE Internal Use Only - 88 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 88 If country code does not match, select Browse… button next to the Media Image, and then select the media image with matched country code. Copyright © 2009 LG Electronics. Inc. All right reserved. - 89 - LGE Internal Use Only Only for training and service purposes...
  • Page 89 6) Clear: Clearing all directory paths of images in the dialog. 7) Start: Starting downloading the selected individual image. LGE Internal Use Only - 90 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 90 (The folder name shall be different from that of the folder name in the snapshot. The folder name indicates the path where the image files are located.) Copyright © 2009 LG Electronics. Inc. All right reserved. - 91 - LGE Internal Use Only...
  • Page 91 (The file name shall be different from that of the file name in the snapshot.) LGE Internal Use Only - 92 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 92 NV file to be downloaded on the handset. To enable this simply check the box or select the NV file from the LGMDP installation directory by clicking on the Browse… button. (Example) Copyright © 2009 LG Electronics. Inc. All right reserved. - 93 - LGE Internal Use Only Only for training and service purposes...
  • Page 93 Otherwise click on the Yes button to continue downloading selected image file with options. LGE Internal Use Only - 94 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 94 Button to start downloading DZ image. If you want to go back to original download mode, click on the Original button. (Example) Copyright © 2009 LG Electronics. Inc. All right reserved. - 95 - LGE Internal Use Only Only for training and service purposes...
  • Page 95 LGMDP installation directory. Erasing the existing directories and files before the Module image is downloaded. LGE Internal Use Only - 96 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 96 Restoring NV data which backed up in the Backing up process. User can also restore NV data using NV Default image selection. Copyright © 2009 LG Electronics. Inc. All right reserved. - 97 - LGE Internal Use Only Only for training and service purposes...
  • Page 97 Erasing the existing directories and files before downloading the selected Media image Downloading Media image in progress LGE Internal Use Only - 98 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 98 5. Downloading 5.2.4 Downloading Downloading Module image in progress Rebooting handset Downloading process has completed successfully Copyright © 2009 LG Electronics. Inc. All right reserved. - 99 - LGE Internal Use Only Only for training and service purposes...
  • Page 99 Manager is designed to monitor USB connectivity and check where the COM has been installed . Select Device Manager from the Tools of the file menu. LGE Internal Use Only - 100 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 100: Troubleshooting Download Errors

    The below dialog shows parameters of Select Port when phone is booted in Emergency mode. Click on the Connect button to continue. Copyright © 2009 LG Electronics. Inc. All right reserved. - 101 - LGE Internal Use Only Only for training and service purposes...
  • Page 101 The selected image will be downloaded to the handset from the path directory in the PC. After downloading images successfully, it will boot to normal mode. LGE Internal Use Only - 102 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 102 5.3.2 NV Restore Error Snapshot showing the NV Restore error. Next slide shows the remedial procedure to adopt. Copyright © 2009 LG Electronics. Inc. All right reserved. - 103 - LGE Internal Use Only Only for training and service purposes...
  • Page 103 Connect the handset and Press the Connect button in the Select Port window. (Enable state in the window indicates that the Phone has been detected and is ready to download.) LGE Internal Use Only - 104 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 104 NV Backup was done. Choose the desired NV file to be downloaded on the handset, and click on Start. Copyright © 2009 LG Electronics. Inc. All right reserved. - 105 -...

  • Page 105: Caution

    5. Erase EFS option will erase everything (media, module, nv items, and user data) in the EFS area. LGE Internal Use Only - 106 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 106: Block Diagram

    6. Block Diagram 6. Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 107 - LGE Internal Use Only Only for training and service purposes...
  • Page 107 LGE Internal Use Only - 108 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 108: Circuit Diagram

    GSM_SW_MODE VRAMP GSM_PA_RAMP ANT_SEL[3] 2.2K L114 C152 C121 C103 100p 836.5MHz,25MHz BLUETOOTH L116 FL101 B7686 C149 DNI GU280 Rev 1.0_ECO (Band I + GSM Quad) WCDMA_1900 TX_IN RX_OUT1 C127 RX_OUT2 GND1 GND2 GND4 GND3 GND5 WCDMA_1900 1880,1960MHz PCS_IN_M C126 BTS4025 C134 2.2p...
  • Page 109 Q201 SIA411DJ UNDER INVESTIGATION ABOUT CURRENT CONSUMPTION SPEAKER GROUND VBATT OJ201 OJ203 OJ205 OJ206 HOLE HOLE HOLE HOLE LGE Internal Use Only - 110 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 110 MICROSD_DATA[3] GPIO_5 EBI2_LB_N EBI2_ALE_N GPIO_4 MICROSD_DATA[2] MICROSD_DATA[1] GPIO_3 EBI2_CS1_N EBI2_CS1_N MICROSD_DATA[0] GPIO_2 EBI2_CS0_N MICROSD_CMD GPIO_1 MICROSD_DETECT GPIO_0 EBI2_M_CLK Copyright © 2009 LG Electronics. Inc. All right reserved. - 111 - LGE Internal Use Only Only for training and service purposes...
  • Page 111 CD_DAT3 DUMMY2 MICROSD_DATA[2] DAT2 REVERSE Type 1.78t MICROSD_DETECT DETECT_A Default : Low DETECT_B DUMMY3 Active : High C401 LGE Internal Use Only - 112 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 112 C512 C506 SPM0410LR5H-QB HH-1M1005-601JT C513 C514 I2C2_SDA 16-8T-04WP I2C2_SCL 120pF 120pF VA510 VA511 RXIN+ RXIN- EVLC18S02015 EVLC18S02015 C527 Copyright © 2009 LG Electronics. Inc. All right reserved. - 113 - LGE Internal Use Only Only for training and service purposes...
  • Page 113 INOUT_A3 INOUT_B3 CAMIF_HSYNC_CAM CAMIF_DATA[2] CAMIF_DATA[4] CAMIF_VSYNC INOUT_A4 INOUT_B4 CAMIF_VSYNC_CAM CAMIF_HSYNC MOTOR_POWER_N CAMIF_VSYNC CAMIF_DATA[3] RCV+ 7.5pF RCV- CAMIF_MCLK AXT580124 LGE Internal Use Only - 114 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 114 VA107 VA102 VA105 M101 VA101 VA104 R102 EVLC14S02050 EVLC14S02050 VBACK_UP EVLC14S02050 EVLC14S02050 EVLC14S02050 4.7K EVLC14S02050 311HR-VG1 C108 2.2u Copyright © 2009 LG Electronics. Inc. All right reserved. - 115 - LGE Internal Use Only Only for training and service purposes...
  • Page 115 INOUT_A3 INOUT_B3 FB111 CAMIF_DATA[6] INOUT_A4 INOUT_B4 RCV- HH-1M1005-601JT MVMF-A300M2 MVMF-A300M2 MOTOR_POWER_N VA110 VA111 VA100 7.5pF EVLC18S02015 EVLC18S02015 EVLC14S02050 LGE Internal Use Only - 116 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 116: Bga Pin Map

    8. BGA Pin Map 8. BGA Pin Map QSC6240 Copyright © 2009 LG Electronics. Inc. All right reserved. - 117 - LGE Internal Use Only Only for training and service purposes...
  • Page 117 8. BGA Pin Map MEMORY (NANDA9R4N4CZBA5E) LGE Internal Use Only - 118 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 118 8. BGA Pin Map BTS4025 Copyright © 2009 LG Electronics. Inc. All right reserved. - 119 - LGE Internal Use Only Only for training and service purposes...
  • Page 119 8. BGA Pin Map LGE Internal Use Only - 120 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 120: Pcb Layout

    9. PCB LAYOUT U503 BU52031NVX Abnormal operation No Slide detect Copyright © 2009 LG Electronics. Inc. All right reserved. - 121 - LGE Internal Use Only Only for training and service purposes...
  • Page 121 Main Ant PAD Main MIC No service Can’t make a call Can’t make No service TX voice signal LGE Internal Use Only - 122 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 122 9. PCB LAYOUT LD101~104 Abnormal operation No Key Light on Copyright © 2009 LG Electronics. Inc. All right reserved. - 123 - LGE Internal Use Only Only for training and service purposes...
  • Page 123 B to B Connector Abnormal operation Abnormal operation No LCD Backlight on No LCD On No LCD Power on LGE Internal Use Only - 124 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 124 9. PCB LAYOUT Copyright © 2009 LG Electronics. Inc. All right reserved. - 125 - LGE Internal Use Only Only for training and service purposes...
  • Page 125 9. PCB LAYOUT LGE Internal Use Only - 126 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 126: Calibration

    10. CALIBRATION 10. CALIBRATION 10.1. Configuration of directory 10.1.1. Configuration of directory Copyright © 2009 LG Electronics. Inc. All right reserved. - 127 - LGE Internal Use Only Only for training and service purposes...
  • Page 127 It consists of default values. ‘MODEL NAME’_NV.INI It is written when ‘cal&auto’ is begun. ‘MODEL It is described a testing procedures. NAME’_Sequence.XML LGE Internal Use Only - 128 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 128: How To Use Tachyon

    Then, You can make a choice of GU280 for loading cfg files before run. b. Select model name and then do double-click the buyer name. You will see configuration files loaded in the right window with PASS information above <...
  • Page 129 2) RF Calibration 3) RF Auto test 4) After action - Phone reset - Change UE to AMSS LGE Internal Use Only - 130 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 130: Exploded View & Replacement Part List

    11. EXPLODED VIEW & REPLACEMENT PART LIST 11.1 EXPLODED VIEW 11 12 63 64 Copyright © 2009 LG Electronics. Inc. All right reserved. - 131 - LGE Internal Use Only Only for training and service purposes...
  • Page 131 ASS’Y EXPLODED VIEW LGE Internal Use Only - 132 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 132: Replacement Parts

    COMPLEX, (empty), , , , , GRAY TITAN MCJN00 COVER,REAR MCJN0108402 MOLD, PC LUPOY SC-1004A, , , , , GRAY Copyright © 2009 LG Electronics. Inc. All right reserved. - 133 - LGE Internal Use Only Only for training and service purposes...
  • Page 133 COMPLEX, (empty), , , , , BLACK WITHOUT MTAD00 TAPE,WINDOW MTAD0113001 COMPLEX, (empty), , , , , COLOR LGE Internal Use Only - 134 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 134 C2000 USASV DIA 4.0 WHITE WITHOUT ADCA00 DOME ASSY,METAL ADCA0102601 COLOR WITHOUT MLAZ00 LABEL MLAZ0038301 PID Label 4 Array COLOR Copyright © 2009 LG Electronics. Inc. All right reserved. - 135 - LGE Internal Use Only Only for training and service purposes...

  • Page 135: Main Component

    ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C103 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 136 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 136 VIBRATOR,MOTOR SJMY0007105 3 V,0.08 A,10*2.7 ,12mm ,; ,3V , , ,12000 RPM , , , , E, 19 Copyright © 2009 LG Electronics. Inc. All right reserved. - 137 - LGE Internal Use Only Only for training and service purposes...
  • Page 137 ELCH0001404 1.5 nH,S,1005,R/TP C120 CAP,CERAMIC,CHIP ECCH0000112 15 pF,50V,J,NP0,TC,1005,R/TP C121 CAP,CERAMIC,CHIP ECCH0000179 22 nF,16V ,K ,X5R ,HD ,1005 ,R/TP LGE Internal Use Only - 138 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 138 0.5 pF,50V ,B ,NP0 ,TC ,1005 ,R/TP C163 RES,CHIP,MAKER ERHZ0000401 0 ohm,1/16W ,J ,1005 ,R/TP C164 CAP,CERAMIC,CHIP ECCH0000110 10 pF,50V,D,NP0,TC,1005,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 139 - LGE Internal Use Only Only for training and service purposes...
  • Page 139 10000000 pF,6.3V ,M ,X5R ,TC ,1608 ,R/TP , , ,[empty] C217 CAP,CERAMIC,CHIP ECCH0005604 ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,0.8 mm LGE Internal Use Only - 140 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 140 10000000 pF,6.3V ,M ,X5R ,TC ,1608 ,R/TP , , ,[empty] C251 CAP,CERAMIC,CHIP ECCH0005604 ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,0.8 mm Copyright © 2009 LG Electronics. Inc. All right reserved. - 141 - LGE Internal Use Only Only for training and service purposes...
  • Page 141 ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C414 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP C415 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only - 142 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 142 ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP C536 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 143 - LGE Internal Use Only Only for training and service purposes...
  • Page 143 FILTER,EMI/POWER SFEY0006501 SMD ,3 TERMINAL EMI FILTER FL601 FILTER,EMI/POWER SFEY0011601 SMD ,SMD ,18 V,4ch. EMI_ESD Filter (50 Ohm,15pF) LGE Internal Use Only - 144 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 144 4.7 uH,M ,1 ,R/TP , ,; , ,0.3NH , , , , , ,NON SHIELD L204 INDUCTOR,SMD,POWER ELCP0008004 ,2.5X2X1MM ,11MM ,R/TP L205 FILTER,BEAD,CHIP SFBH0007103 75 ohm,1005 ,CHIP BEAD, 300mA Copyright © 2009 LG Electronics. Inc. All right reserved. - 145 - LGE Internal Use Only Only for training and service purposes...
  • Page 145 2200 ohm,1/16W ,J ,1005 ,R/TP R309 RES,CHIP,MAKER ERHZ0000443 2200 ohm,1/16W ,J ,1005 ,R/TP R310 RES,CHIP,MAKER ERHZ0000204 100 Kohm,1/16W ,F ,1005 ,R/TP LGE Internal Use Only - 146 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 146 NAND+512M(DDR/8Mx4x16) SDRAM ,; ,IC,MCP U402 EUSY0333701 TLLGA ,8 PIN,R/TP ,OVP WDFN-8L ,8 PIN,R/TP ,300mA/300mA 2.8V/1.8V Dual U601 EUSY0319001 Copyright © 2009 LG Electronics. Inc. All right reserved. - 147 - LGE Internal Use Only Only for training and service purposes...
  • Page 147 FR-4 ,0.8 mm,STAGGERED-10 , ,; , , , , , , , , , R501 RES,CHIP,MAKER ERHZ0000204 100 Kohm,1/16W ,F ,1005 ,R/TP LGE Internal Use Only - 148 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 148 14 V, ,SMD ,50pF, 1005 VA508 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 VA509 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 Copyright © 2009 LG Electronics. Inc. All right reserved. - 149 - LGE Internal Use Only Only for training and service purposes...

  • Page 149: Accessory

    100-240V ,5060 Hz,5.1 V,0.7 A,CE ,AC-DC ADAPTOR ,; SSAD00 ADAPTOR,AC-DC SSAD0033201 ,90Vac~264Vac ,4.75Vdc~5.25Vdc ,700mA ,5060 , ,INLET 2P ,I/O CONNECTOR , LGE Internal Use Only - 150 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...

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