LG KG291 Service Manual
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LG KG291 Service Manual

LG KG291 Service Manual

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Download this manual See also: User Manual
Internal Use Only
Service Manual
KG290/KG291
Date: October, 2007 / Issue 1.0

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  • Page 1 Internal Use Only Service Manual KG290/KG291 Date: October, 2007 / Issue 1.0...

  • Page 2: Table Of Contents

    4.11 Earphone Trouble ........84 4.12 KEY backlight Trouble ......86 4.13 Microphone Trouble ......88 4.14 RTC Trouble ........90 4.15 Slide on/off Trouble......92 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes...

  • Page 3: Only For Training And Service Purposes

    The manufacturer will not be responsible for any charges that are resulted from such unauthorized use. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 4 - Only for training and service purposes...

  • Page 4: Introduction

    The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining warranty. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 5 -...

  • 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 Copyright © 2007 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...

  • Page 6: Abbreviations

    International Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode OPLL Offset Phase Locked Loop Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...

  • Page 7: Only For Training And Service Purposes

    Time Division Multiple Access UART Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...

  • Page 8: Performance

    Loud Speaker Voice Recoding Microphone Speaker/Receiver One way speaker Travel Adapter MIDI 40 Poly (Mono SPK) Camera 1.3M CMOS Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes...

  • Page 9: Technical Specification

    8 dBm 22 dBm 6 dBm 20 dBm 4 dBm 18 dBm 2 dBm 16 dBm 0 dBm LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...

  • Page 10: Only For Training And Service Purposes

    6,000 GSM, EGSM Offset from Carrier (kHz) Max. (dBm) Output RF Spectrum (due to switching transient) 1,200 1,800 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes...

  • Page 11: Only For Training And Service Purposes

    * Mean that Adopt a straight line in between 300 Hz and 1,000 Hz to be Max. level in the range. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...

  • Page 12: Only For Training And Service Purposes

    3.76 ~ 3.89 V 3.89 V ~ 3.63 0.03V (Call) every 1 minutes Low Voltage Warning 3.48 0.03V (Standby) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...

  • Page 13: Only For Training And Service Purposes

    Capacity: 830mAh Switching-mode charger Travel Charger Input: 100 ~ 240 V, 50/60 Hz Output: 5.2 V, 800 mA LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...

  • Page 14: Technical Brief

    ENABLE input allows initial turn-on of PAM circuitry to minimize battery drain. Figure 1. Functional Block Diagram Figure1. Functional Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 15 - Only for training and service purposes...

  • Page 15: Only For Training And Service Purposes

    Power Control Bias Voltage GMD PAD Ground Pad, device underside Table 4. SKY77318 Pin Names and Signal Descriptions LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...

  • Page 16: Transceiver (Ad6548, U501)

    IC. The interface features low-voltage digital interface buffers compatible with logic levels from 1.6V to 2.9V. Figure 2 AD6548 Block Diagram Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 -...

  • Page 17: Only For Training And Service Purposes

    GSM 850 LNA input VLDO2 LO VCO Supply (3) RX850 GSM 850 LNA input Table 1 AD6548/9 Pin Descriptions LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...

  • Page 18: Fem For Triband(Fl500)

    EGSM_RX- 2V75_VVCXO VCTRL1 C534 C535 0.1u ANT_SW1 ANT_SW2 ANT_SW3 C544 C545 C546 Figure 3- 2 FEM CIRCUIT DIAGRAM Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 19 - Only for training and service purposes...

  • Page 19: 26 Mhz Clock (Dcxo, X500)

    RX900 VCC_TXVCO RX850B TXOP_HI RX850 TXOP_LO VLDO3 C531 0.1u C541 26MHz X500 TSX-3225_26MHZ Figure 3-3. DCXO CIRCUIT DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
  • Page 20 • GSM 900/850 power classes 4 and 5, • DCS 1800 power classes 1 and 2, and • PCS 1900 power classes 1 and 2 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 -...

  • Page 21: Only For Training And Service Purposes

    3. TECHNICAL BRIEF Figure 3-4-1 SYSTEM INTERCONECTION OF AD6721 EXTERNAL INTERFACE LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...

  • Page 22: Only For Training And Service Purposes

    Select 16bits or 8bits interface mode for MAIN LCD. IF_MODE For the future Table 3-2 . LCD CONTRON SIGNALS DISCRIPTION Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 - Only for training and service purposes...

  • Page 23: Only For Training And Service Purposes

    S_DATA (GPO 20) Serial Data to PLL S_CLK (GPO 21) Clock to PLL Table 3-4. RF CONTROL SIGNALS DESCRIPTION LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...

  • Page 24: Only For Training And Service Purposes

    SIM_DATA SIM_CLK GND4 GND1 GND3 GND2 C236 C238 C239 C237 220n 1000p Figure 3-5. SIM Interface of AD6721 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...

  • Page 25: Baseband Processor (Ad6721 , U103)

    Idle : 3.50V~3.35V b. Dedicated : 3.56V~3.35V Low battery alarm interval Idle : 3min Dedicated:1min Switch-off voltage : 3.35V LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...

  • Page 26: Only For Training And Service Purposes

    USBON _CHG_EN PGND R117 C137 C138 C139 100K 4.2V~3.86V 3.85V~3.75V 3.74V~3.70V 3.69V~3.57V Figure 3-6. CIRCUIT FOR BATTERY CHARGING Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...

  • Page 27: Display And Interface

    - LCD_ID[2:3] : for the future using • For using 262K color, data buses should be 16 bits. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...

  • Page 28: Only For Training And Service Purposes

    L_DATA03 L_DATA02 L_DATA01 L_DATA00 VSYCIN LCD_RD LCD_WR LCD_RS LCD_CS LCD_ID1 R700 CN700 C700 Figure 3-7. LCD INTERFACE CIRCUIT Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...

  • Page 29: Camera Ic(Ait813G , U400)

    YCbCr is real data interface signal. Figure 3-8. AIT701G BLOCK DIAGRAM Figure 3-9. SENSOR CHIP BLOCK DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 30 - Only for training and service purposes...

  • Page 30: Only For Training And Service Purposes

    PMCLK _PLCD_WE LCD_WR C425 VDD_IO0 PLCD17 GND_IO0 PLCD16 2V8_MV TP403 C429 2V8_AMV C430 C431 Figure 3-10. AIT813G CIRCUIT Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...

  • Page 31: Keypad Switches And Scanning

    KEY309 SHARP R333 KEY_ROW4 UKEY_ROW4 VA332 R335 KEY_COL0 R336 KEY_COL1 R337 KEY_COL2 Figure 3-11. Keypad Switches and Scanning LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...

  • Page 32: Microphone

    AOUT2P2 ABB_P C154 C155 R123 AOUT2N1 ABB_N AOUT2N2 R124 AOUT3L AUXOP_L C156 C157 R125 AOUT3R AUXOP_R C158 C159 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...

  • Page 33: Only For Training And Service Purposes

    R211 PGND 0.47u C209 R213 R214 100K 220n 200K C211 SPK_SEL R215 RECEIVER SPEAKER Figure 3-13. MAIN SPEAKER LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...

  • Page 34: Headset Interface

    L204 C229 VA202 C230 R233 C233 4.7uH JACK_DETECT INSERT REMOVE CLOSE TO EARJACK Figure 3-14. HEADSET JACK INTERFACE Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...

  • Page 35: Key Back-Light Illumination

    R349 VA310 VA311 EVL5M02200 LD300 LD301 LD302 LD303 LD304 LD305 LED_KEY VA312 EVL5M02200 Figure 3-15. KEY BACK-LIGHT ILLUMINTION LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...

  • Page 36: Lcd Back-Light Illumination

    1.5K R613 LCD_DIM_CTRL EN_SET MLED1 C630 MLED2 R615 C631 100K C633 C634 Figure 3-16. MAIN LCD BACKLIGHT ILLUMINATION Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...

  • Page 37: Vibrator

    The vibrator is placed in the sub PCB. The vibrator is driven from VIBRATOR (GPIO_3) of AD6721 VIBRATOR VBAT D301 1SS302-T5L_F_H MOTOR R350 R351 Q300 VIBRATOR KTC4075E Figure 3-17. MOTOR LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...

  • Page 38: Bluetooth

    USC0 A_GPIO0 VDDO33_1 VDDO33_2 _BT_RST RST_N VDDO33_3 C622 1000p C624 C625 0.1u C623 0.1u Figure 3-17. Bluetooth circuit Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...

  • Page 39: Circuit Description

    - Four independent programmable backlights plus One - Service Light - Universal System Connector Interface - Enhanced Generic Serial Port - Dedicated SPI interface LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...

  • Page 40: Only For Training And Service Purposes

    - CLK, _ADV, WAIT - for Burst Mode Flash Operation • SIM Interface ♦ SIMCLK ♦ SIMDATA ♦ SIM_RESET ♦ USB ♦ USBDP/USBDM • USC Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 - Only for training and service purposes...

  • Page 41: Only For Training And Service Purposes

    3. TECHNICAL BRIEF 2. Analog Main Processor (ABB part of AD6721) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...

  • Page 42: Only For Training And Service Purposes

    AFC DAC may operate with the master clock idle. The AFC DAC uses a low-power internal oscillator to maintain a stable output voltage based on the last digital input value. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 -...

  • Page 43: Only For Training And Service Purposes

    = ( fMCLK / 256 ) / ( Light12Period[9:0] + 1 ) fLIGHT3 = ( fMCLK / 256 ) / ( Light3Period[9:0] + 1 ) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...

  • Page 44: Only For Training And Service Purposes

    PCM audio samples input via the ASPORT. AudControl4 programs the sampling rate and stereo or monophonic operating mode for PCM audio samples input via the MSPORT. Receive audio signal from MIC. LG-G832 is used differential configuration. Send audio signal to Receiver. LG-G832 is used differential configuration.

  • Page 45: Only For Training And Service Purposes

    3. TECHNICAL BRIEF • Power Management Section Figure 4. AD6721 Voltage Regulator Assignments LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...

  • Page 46: Only For Training And Service Purposes

    VAPP set to 1.8V is the camera digital supply. The camera module used in the example is a type that does both image sensing and image processing. VGP and VAPP are both programmable voltage supplies. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 47 -...

  • Page 47: Only For Training And Service Purposes

    VABB terminal should be the recommended bypass capacitor. The VABB regulator may not be utilized by any devices other than the ABB IC. 3. MCP Memory PF38F4050L0ZBQ0 (INTEL ) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...

  • Page 48: Only For Training And Service Purposes

    -70 ns initial access, 25 ns async page read at 3.0V I/O (16-Mbit PSRAM) -65 ns initial access, 18 ns async page reads at 3.0V I/O Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 49 -...

  • Page 49: Only For Training And Service Purposes

    - Embedded Audio Codec support: AMR record/playback , AAC/MP3 playback - Support digital (through serial bus) outputs for MP3 audio. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...

  • Page 50: Only For Training And Service Purposes

    2V8_VMEM R225 R228 0.1u R229 1.5K AUXIP C220 0.1u AUXIN C224 C225 C226 Figure 5. Microphone(main & aux) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 51 - Only for training and service purposes...

  • Page 51: Only For Training And Service Purposes

    When headset jack is put in and pressed the hook-switch of headset, the HOOK_DETECT signal is goes to high, then the hook-switch is detected 7. Bluetooth & FM Radio (BCM2048) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...

  • Page 52: Only For Training And Service Purposes

    TCXO values Low Power Consumption FM signal dependent mono/stereo blend along with soft mute control FM auto search and tuning function with RSSI and status indicator Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 53 -...
  • Page 53 (3) The USBON turns LOW, or (4) The BAT pin voltage falls below the CV mode threshold. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...

  • Page 54: Only For Training And Service Purposes

    3. TECHNICAL BRIEF Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 55 - Only for training and service purposes...

  • Page 55: Trouble Shooting

    Figure 4.1 U500 Power Amp Module (SKY77318) U501 (AD6548) RF Main Chip (Transceiver) X500 Crystal, 26MHz Clock FL500 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...

  • Page 56: Rx Trouble

    Crystal Circuit (2) Check Mobile SW &FEM (3) Check RX I/Q Signal Re-download SW or Do calibration again Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 57 - Only for training and service purposes...

  • Page 57: Only For Training And Service Purposes

    Mobile SW Change X500 X500 CIRCUIT 2V75_VVCXO U502 C543 1000p 26M_DBB C547 R520 2.2u WAVEFORM Graph 4.2.1(b) Graph 4.2.1(a) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...

  • Page 58: Only For Training And Service Purposes

    VCTRL2 EGSM_RX- 2V75_VVCXO VCTRL1 Graph 4.2.2 FEM Control Signal C534 C535 0.1u ANT_SW1 ANT_SW2 ANT_SW3 C544 C545 C546 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 59 - Only for training and service purposes...

  • Page 59: Only For Training And Service Purposes

    RX Stand alone Mode is needed refer to chapter 10 Vctrl 1 Vctrl 1 Vctrl 3 Table 4.2.2 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...

  • Page 60: Only For Training And Service Purposes

    Check if there is any Similar? Replace U501 Major difference Refer to graph 4.2.3 Redownload software and calibration again - 61 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 61: Tx Trouble

    Mobile SW & FEM (3)Check PAM control signal (4)Check TX I/Q Signal Redownload SW or Do calibration again LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 62 - Only for training and service purposes...

  • Page 62: Only For Training And Service Purposes

    Mobile SW Change X500 X500 CIRCUIT 2V75_VVCXO U502 C543 1000p 26M_DBB C547 R520 2.2u WAVEFORM Graph 4.3.1(b) Graph 4.3.1(a) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 63 - Only for training and service purposes...

  • Page 63: Only For Training And Service Purposes

    2V75_VVCXO VCTRL1 Vctrl 3 C534 C535 0.1u ANT_SW1 ANT_SW2 ANT_SW3 Graph 4.3.2(b) DCS,PCS Tx mode C544 C545 C546 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...

  • Page 64: Only For Training And Service Purposes

    Changing RF600 Short with RF Cable disconnected TX Mode EGSM DCS/PCS Vctrl 1 Vctrl 2 Vctrl 3 Table 4.3.2 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 65 - Only for training and service purposes...

  • Page 65: Only For Training And Service Purposes

    Any Major Difference or not Any Major Difference or not Refer to Graph 4.3.3 Go to Next Step LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...

  • Page 66: Only For Training And Service Purposes

    Check if there is Replace U501 Similar? Any Major Difference Refer to Graph4.3.4 Re-download the Software And calibrate Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 67 - Only for training and service purposes...

  • Page 67: Power On Trouble

    C131 C135 VABB_LDO C128 C129 C130 C132 C133 C134 0.1u VAPP C126 C127 VAPPGATE PWREN VAPPCFG VMEMSEL VRTCSEL LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...

  • Page 68: Only For Training And Service Purposes

    The power-on procedure is Completed. The problem may be elsewhere. THE PHONE WILL Replace the main board POWER ON. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 69 - Only for training and service purposes...

  • Page 69: Charging Trouble

    VBAT 2V8_VEXT U102 ISL6299 CRDL IMIN _PPR _CHG _CHG_STAT ICDL USBON _CHG_EN PGND R117 C137 C138 C139 100K LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 70 - Only for training and service purposes...

  • Page 70: Only For Training And Service Purposes

    Voltage goes up to 3.4V Battery thermistor Change the Battery value retest is about 10K? Charge is operating properly Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 71 - Only for training and service purposes...

  • Page 71: Vibrator Trouble

    R350 Flow R351 Q300 VIBRATOR KTC4075E When the vibrator works, the VIBRATOR signal at this point goes High LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 72 - Only for training and service purposes...

  • Page 72: Only For Training And Service Purposes

    Q300 near Check the soldering of Resolder vibrator vibrator at upper board Replace Vibrator Vibrator will work properly Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 73 - Only for training and service purposes...

  • Page 73: Lcd Trouble

    4. TROUBLE SHOOTING 4.7 LCD Trouble TEST POINT FL707 FL706 CN700 FL703 FL704 FL705 Figure 15 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 74 - Only for training and service purposes...

  • Page 74: Only For Training And Service Purposes

    KEY_BACKLIGHT LCD_ID1 KEY_ROW1 SPK_REV_P INOUT_B4 INOUT_A4 KEY_ROW2 INOUT_B3 INOUT_A3 SPK_REV_N KEY_ROW3 INOUT_B2 INOUT_A2 POWERKEY INOUT_B1 INOUT_A1 ICVE21184E150R101FR FL701 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 75 - Only for training and service purposes...

  • Page 75: Only For Training And Service Purposes

    Resoldering EMI filter(FL703~FL707) EMI filter ? Does LCD work Replace LCD module properly ? LCD working well ! LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 76 - Only for training and service purposes...

  • Page 76: Camera Trouble

    4. TROUBLE SHOOTING 4.8 Camera Trouble TEST POINT Figure 16 U400(AIT813G) Figure 17 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 77 - Only for training and service purposes...

  • Page 77: Only For Training And Service Purposes

    LCD_RS C420 1000p 13M_AIT PMCLK _PLCD_WE LCD_WR C425 VDD_IO0 PLCD17 GND_IO0 PLCD16 2V8_MV TP403 C429 2V8_AMV C430 C431 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 78 - Only for training and service purposes...

  • Page 78: Only For Training And Service Purposes

    Itís camera moduleís problem Replace the camera module Replace Check the signals of the FL400~FL403 FL400~FL403 Camera will work properly Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 79 - Only for training and service purposes...

  • Page 79: Speaker & Receiver Trouble

    R210 ABB_N REC_N C208 R211 PGND 0.47u C209 R213 R214 100K 220n 200K C211 SPK_SEL R215 RECEIVER SPEAKER LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 80 - Only for training and service purposes...

  • Page 80: Only For Training And Service Purposes

    Replace or working Repair it properly? U202 is working Resolder or properly? Replace it Replace Main PCB Assemble Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 81 - Only for training and service purposes...

  • Page 81: Sim Card Interface Trouble

    SIM CONNECTOR R235 J202 SIM_RST R236 SIM_DATA SIM_CLK GND4 GND1 GND3 GND2 C236 C238 C239 C237 220n 1000p LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 82 - Only for training and service purposes...

  • Page 82: Only For Training And Service Purposes

    And try again. Does it work Does it work Properly? Properly? SIM Card will be detected. Change SIM Card Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 83 - Only for training and service purposes...

  • Page 83: Earphone Trouble

    VA200 C224 C225 C226 C231 L204 C229 VA202 C230 R233 C233 4.7uH JACK_DETECT INSERT REMOVE CLOSE TO EARJACK LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 84 - Only for training and service purposes...

  • Page 84: Only For Training And Service Purposes

    Earphone will work properly Earphone will work properly If not, check the U300, U301 Change the main board. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 85 - Only for training and service purposes...

  • Page 85: Key Backlight Trouble

    4. TROUBLE SHOOTING 4.12 KEY backlight Trouble TEST POINT LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 86 - Only for training and service purposes...

  • Page 86: Only For Training And Service Purposes

    Are all LEDs Check the soldering Working? each R and LED Replace or resoldering Backlight will work properly. component Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 87 - Only for training and service purposes...

  • Page 87: Microphone Trouble

    100K C219 C215 2.2K R231 100ohm MIC_P OB4-15L42-C33L C222 C223 C228 0.1u R232 100ohm MIC200 MIC_N R234 2.2K LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 88 - Only for training and service purposes...

  • Page 88: Only For Training And Service Purposes

    MIC200. Is it a few tens mV AC? Resolder U204 U204 working Properly? Microphone will work properly. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 89 - Only for training and service purposes...

  • Page 89: Rtc Trouble

    OSCIN OSCOUT C123 1000p R103 26M_DBB CLKIN _CHG_EN GPIO_0 32.768KHz C124 _CHG_STAT GPIO_1 BT_LDO_EN GPIO_2 VIBRATOR GPIO_3 GPIO_4 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 90 - Only for training and service purposes...

  • Page 90: Only For Training And Service Purposes

    R104 Check the soldering of R104. about 1.2V Replace X100and try again. RTC will work properly Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 91 - Only for training and service purposes...

  • Page 91: Slide On/Off Trouble

    TEST POINT C311 U301 CIRCUIT SLIDE SW 2V8_VMEM R343 100K SLIDE C313 C311 C314 C312 EVL5M02200 U301 A3212EELLT-T LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 92 - Only for training and service purposes...

  • Page 92: Only For Training And Service Purposes

    Voltage at pin 1 of U301 = 0V Change Main board Does it work properly? Slide on/off will work properly Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 93 - Only for training and service purposes...

  • Page 93: Download

    5. DOWNLOAD 5. DOWNLOAD 5.1 Download A. Download Setup Figure 5-1 describes Download setup Figure 5-1. Download Setup LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 94 - Only for training and service purposes...
  • Page 94 5. DOWNLOAD B. Multi Download Procedure 1. Run GSM Multi Download program and select Setting Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 95 - Only for training and service purposes...
  • Page 95 DLL file and press Open OPEN Location KG290_DLL KG290.dll File Name OPEN File Type CANCLE LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 96 - Only for training and service purposes...
  • Page 96 6. Repeat step 4-5 to select CodeData.mot Model KG290 KG290.dll OPEN Location File Name OPEN File Type CANCLE Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 97 - Only for training and service purposes...
  • Page 97 7. Check if the ADI option is set to Hermes 8. Press OK to end Configuration Model KG290 KG290.dll KG290 Model KG290 Model KG290 KG290 Select Rate LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 98 - Only for training and service purposes...
  • Page 98 9. Press START to execute download 10. Once downloading is started, press STOP button to keep from re-downloading after downloading is completed. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 99 - Only for training and service purposes...

  • Page 99: Block Diagram

    KEY_ROW0:4 KEY_COL3:4 KEY_ROW0:4 KEY_ROW0:4 KEY_COL3:4 KEY_COL0:2 MOTIR VIB_O POWERKEY (from BB) LED_KEY KEY_BACKLIGHT(fr om BB) KEY_BACKLIGHT(from BB) POWERKEY LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 100 - Only for training and service purposes...

  • Page 100: Circuit Diagram

    AOUT3L AUXOP_L C156 C157 R125 AOUT3R AUXOP_R C158 C159 OJ100 OJ101 OJ102 OJ103 LG(42)-A-5505-10:01 LG Electronics Inc. LGMC - 101 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 101 R236 SIM_DATA SIM_CLK GND4 GND1 GND3 GND2 C236 C238 C239 C237 220n 1000p LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 102 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 102 LD302 LD303 LD304 LD305 MOTOR R350 R351 Q300 VIBRATOR KTC4075E LED_KEY VA312 EVL5M02200 LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 103 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 103 2V8_MV 2V8_AMV 1V8_VCAM 2V8_VEXT VBAT FB400 U402 RT9011-MGPQW VOUT1 VOUT2 C432 C433 C434 LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 104 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 104 C542 26MHz ANT_SW1 X500 ANT_SW2 TSX-3225_26MHZ ANT_SW3 C544 C545 C546 R521 TEMP_RF PT500 LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 105 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 105 0.1u 1.5K R613 LCD_DIM_CTRL EN_SET MLED1 C630 MLED2 R615 C631 100K C633 C634 LGIC(42)-A-5505-10:01 LG Electronics Inc. LGMC - 106 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 106 C707 BAT700 VA705 VA706 MOTOR 2V,500mA,SMD Type KEY_BACKLIGHT VA707 EVL14K02200 (480pF) OJ100 OJ101 LG Electronics Inc. LGIC(42)-A-5505-10:01 LGMC - 107 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 107 - 108 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 108: Bga Ic Pin Check

    8. BGA IC Pin Check 8. BGA IC Pin Check NOT in use - AD6721 Pin Map (Top View) - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 109 - Only for training and service purposes...
  • Page 109 8. BGA IC Pin Check NOT in use - AIT813G Pin Map (Bottom View) - LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 110 - Only for training and service purposes...
  • Page 110 8. BGA IC Pin Check Not in Use U100 PF38F4050L0ZBQ0 (EUSY0229501) PIN MAP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 111 - Only for training and service purposes...
  • Page 111 8. BGA IC Pin Check Not in Use U501 BCM2048 (EUSY0319601) PIN MAP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 112 - Only for training and service purposes...

  • Page 112: Pcb Layout

    NA point 0 ohm PAD LD300~305 LEDS No keypad backlights MIC200 MIC Receiver can’t hear my voice KG290/KG291 - 113 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 113 CN301 I/O Connector Can’t charge Battery Have problem with USB Data transformation NA point 0 ohm PAD KG290/KG291 - 114 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 114 9. PCB LAYOUT LD707~712 LEDS No keypad NA point backlights KG290/KG291 - 115 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 115 LCD display NA point 0 ohm PAD BAT700 Backup Battery Have problems with RTC KG290/KG291 - 116 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 116: Engineering Mode

    Buzzer Backlight Bluetooth on Vibrator Buzzer Bluetooth off Vibrator Key PAD MicSpkTest Battery Camera Audio Video Camera Bluetooth Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 117 - Only for training and service purposes...

  • Page 117: Bb Test [Menu 1]

    This menu is to test the vibration mode. 1) Vibrator on : Vibration mode is on. 2) Vibrator off : Vibration mode is off. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 118 - Only for training and service purposes...
  • Page 118 2) DAI UPLINK : Speech encoder test 3) DAI DOWNLINK : Speech decoder test 4) DAI OFF : DAI mode off Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 119 - Only for training and service purposes...

  • Page 119: Rf Test [Menu 2]

    [Soft2 Key]. If the key is working properly, name of the key is displayed on the screen. Test will be completed in 15 seconds automatically. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 120 - Only for training and service purposes...

  • Page 120: Trace Option [Menu 4]

    RF Calibration data, etc. cannot be restored again. 10.7 S/W version This displays software version stored in the phone. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 121 - Only for training and service purposes...

  • Page 121: Stand Alone Test

    - See if the value of RSSI is close to -16dBm when setting the value between 0 ~ 26 in Gain Control Index. - Normal phone should indicate the value of RSSI close to -16dBm. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 122 - Only for training and service purposes...

  • Page 122: Means Of Test

    After setting them all above, press connect button. e. Press the start button Figure 11-1. HW test program Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 123 - Only for training and service purposes...
  • Page 123 11. STAND ALONE TEST Figure 11-2. HW test setting Figure 11-3. Ramping profile LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 124 - Only for training and service purposes...

  • Page 124: Auto Calibration

    PC (for Software Installation) Pentium II class above 300MHz Table 11-1. Calibration Equipment List. Figure 12-1. Equipment Setup Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 125 - Only for training and service purposes...

  • Page 125: Test Jig Operation

    Indicate data transfer state through the UART port LED 4 Indicate data transfer state through the MON port Table 11-4 LED Description LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 126 - Only for training and service purposes...

  • Page 126: Procedure

    TEST JIG, in general.) 2. Run HK_26.exe to start calibration. 3. From the Calibration SETTING->Logic Operation menu KG280 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 127 - Only for training and service purposes...
  • Page 127 12. AUTO CALIBRATION 4. Set PORT COM1(useing RS232 cable) & Logic Mode 1 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 128 - Only for training and service purposes...
  • Page 128 12. AUTO CALIBRATION 5. Select KG290/KG291 and then Click Start KG280 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 129 - Only for training and service purposes...

  • Page 129: Agc

    This procedure is for battery calibration. You can get main Battery Config Table and temperature Config Table will be reset. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 130 - Only for training and service purposes...

  • Page 130: Exploded View & Replacement Part List

    13. EXPLODED VIEW & REPLACEMENT PART LIST 13.1 EXPLODED VIEW 13 14 54 38 - 131 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 131 - 132 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 132: Replacement Parts

    Without Color MTAG00 TAPE,BUTTON MTAG0004201 COMPLEX, (empty), , , , , Without Color COVER GRAY ACGR00 ACGR0010501 ASSY,SLIDE(LOWER) SILVER Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 133 - Only for training and service purposes...
  • Page 133 COMPLEX, (empty), , , , , SILVER GRAY MCCF00 CAP,MOBILE SWITCH MCCF0043601 MOLD, Urethane Rubber S190A, , , , , SILVER LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 134 - Only for training and service purposes...
  • Page 134 PRESS, STS, 0.2t, , , , Without Color MGAD00 GASKET,SHIELD FORM MGAD0148601 COMPLEX, (empty), , , , , Without Color Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 135 - Only for training and service purposes...

  • Page 135: Main Component

    18 V, ,SMD ,4ch. R-Varistor Array(100Ohm,15pF) L700 FILTER,BEAD,CHIP SFBH0008102 1800 ohm,1005 ,Bead L701 FILTER,BEAD,CHIP SFBH0008102 1800 ohm,1005 ,Bead LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 136 - Only for training and service purposes...
  • Page 136 ECCH0005604 10 uF,6.3V ,M ,X5R ,TC ,1608 ,R/TP C101 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 137 - Only for training and service purposes...
  • Page 137 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C139 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C141 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 138 - Only for training and service purposes...
  • Page 138 CAP,TANTAL,CHIP ECTH0005202 ,[empty] , ,[empty] ,[empty] ,[empty] ,[empty] C222 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C223 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 139 - Only for training and service purposes...
  • Page 139 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C430 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C431 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 140 - Only for training and service purposes...
  • Page 140 ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP C540 CAP,CHIP,MAKER ECZH0000813 100 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 141 - Only for training and service purposes...
  • Page 141 10 Kohm,1/16W ,J ,1005 ,R/TP R109 RES,CHIP,MAKER ERHZ0000465 3300 ohm,1/16W ,J ,1005 ,R/TP R111 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 142 - Only for training and service purposes...
  • Page 142 1.5 Kohm,1/16W ,J ,1005 ,R/TP R230 RES,CHIP,MAKER ERHZ0000540 7.5 ohm,1/16W ,J ,1005 ,R/TP R231 RES,CHIP ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 143 - Only for training and service purposes...
  • Page 143 100 ohm,1/16W ,J ,1005 ,R/TP R501 RES,CHIP ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP R503 RES,CHIP,MAKER ERHZ0000504 68 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 144 - Only for training and service purposes...
  • Page 144 VA308 VARISTOR SEVY0003901 5.5 V, ,SMD ,480pF, 1005 .032768 MHz,20 PPM,12.5 pF,65000 ohm,SMD X100 X-TAL EXXY0004602 ,6.9*1.4*1.3 , Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 145 - Only for training and service purposes...
  • Page 145 ECCH0000182 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP C615 CAP,CERAMIC,CHIP ECCH0000178 1.8 pF,50V ,D ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 146 - Only for training and service purposes...
  • Page 146 18 V, ,SMD ,10 Ohm , 7.5pF , 4ch Array FL601 VARISTOR SEVY0007001 18 V,- ,SMD ,6ch, 100ohm, EMI Filter Array chip varistor Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 147 - Only for training and service purposes...
  • Page 147 100 ohm,1/16W ,J ,1005 ,R/TP R407 RES,CHIP,MAKER ERHZ0000438 20 Kohm,1/16W ,J ,1005 ,R/TP R412 RES,CHIP,MAKER ERHZ0000402 10 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 148 - Only for training and service purposes...
  • Page 148 5.5 V, ,SMD ,1005, 50pF VA311 VARISTOR SEVY0003901 5.5 V, ,SMD ,480pF, 1005 VA312 VARISTOR SEVY0003901 5.5 V, ,SMD ,480pF, 1005 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 149 - Only for training and service purposes...
  • Page 149 Location Level Description Part Number Spec Color Remark SVCY00 CAMERA SVCY0013001 CMOS ,MEGA ,1.3M, S/File 1/3.8", 8*14*5t, BtB LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 150 - Only for training and service purposes...

  • Page 150: Accessory

    100-240V ,5060 Hz,5.1 V,700 mA,CE ,24pin, England ,; , ADAPTOR,AC-DC SSAD0026102 , , , , ,WALL 2P ,I/O CONNECTOR , Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 151 - Only for training and service purposes...
  • Page 151 Note...
  • Page 152 Note...

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