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LG GS155 Service Manual

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Download this manual See also: Instruction Manual, User Manual
Internal Use Only
Service Manual
GS155
Date: February, 2010 / Issue 1.0

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Summary of Contents for LG GS155

  • Page 1 Internal Use Only Service Manual GS155 Date: February, 2010 / Issue 1.0...

  • Page 2: Table Of Contents

    12.1 EXPLODED VIEW ..............11 4.6 Vibrator Trouble ................70 12.2 Replacement Parts..............115 4.7 LCD Trouble ..................72 12. Accessory ................... 129 -  - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 3 - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 4: Introduction

    Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining warranty. 4/140 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 • When returning system boards or parts like EEPROM to the factory, use the protective package as described. 5/140 - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. 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 6/140 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 UART Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol 7/140 - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 8: Performance

    EAR Phone Jack PC Synchronization Speech coding EFR/FR/HR Data and Fax Vibrator Loud Speaker Voice Recoding Not Support Microphone 8/140 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 Item Feature Comment Speaker/Receiver 18x12 Speaker/ Receiver Travel Adapter MIDI 32 poly Camera FM Radio 87~108MHz supported 9/140 - 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 10: Technical Specification

    Toler. 30dBm 14dBm 28dBm 12dBm 26dBm 10dBm 24dBm 8dBm 22dBm 6dBm 20dBm 4dBm 18dBm 2dBm 16dBm 0dBm 10/140 - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 GSM850/ EGSM Offset from Carrier (kHz). Max. dBm Output RF Spectrum (due to switching transient) 1,200 1,800 11/140 - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 12 13 4 dB Frequency (Hz) Max.(dB) Min.(dB) 1,000 Sending Response 2,000 3,000 3,400 4,000 2 3 dB 12/140 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 2. Test distance set as 50 cm Fast Charge : Typ. 410 mA Charge Current Total Charging Time : < 3.5 hours 13/140 - 14 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 14 Capacity: 950mAh Switching-mode charger Travel Charger Input: 100 ~ 240V, 50/60 Hz Output: 4.8 V, 400 mA 14/140 - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 15: Technical Brief

    3. TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.1 Digital Main Processor Figure. 3.1.1 X-Gold tm 110 Hardware Block Diagram 15/140 - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 16 – PWM source to drive vibrator – Keypad and display backlight supported. – HASH Unit support for hashing. 16/140 - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 Bus Interconnections The interconnection between the X-Bus and the TEAKlite Bus uses: • Multicore Synchronization • Shared Memory. 17/140 - 18 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 18 – 2D vector graphics (Lines, filled rectangles, Bit block transfer ( e.g. sprites, scrolling, antialiased bitmap fonts) 18/140 - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 19: Power Management

    (via LDO LCORE), parts of the mixed signal macro, parts of the RF macro and the external memory if a 1.8V memory is used. 19/140 - 20 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 20 The RF module has implemented several LDO’s for different RF Power domain. The mixed signal module has some LDO’s for the audio driver and microphone supply. 20/140 - 21 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Table. 3-2-1 Power supply Domains (without RF) 21/140 - 22 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 22 This is handled by an ADC control block in one of the state-machines. If the charger unit is running the ADC is controlled by the charger state-machine. 22/140 - 2 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 3. TECHNICAL BRIEF Figure.3.2.1 First Part of the State Machine, Running in Different Power Domains than the Second Part 23/140 - 24 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 24 3. TECHNICAL BRIEF Figure 3.2.2 Second (Main) Part of the Startup State Machine in the VPMU Domain 24/140 - 25 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 AC supply frequency. Reasons. 25/140 - 26 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 26 This allows to power up the LCORE core regulator and wait for the core to reach reset state before powering up the I/O supply regulators. 26/140 - 27 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.2.3 Start Up Sequence (triggered by First Connect Event) 27/140 - 28 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 28 OFF mode. This is done via the SHUTDOWN state of the PMU state machine. (see chapter switch OFF) 28/140 - 29 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 10 MHz. This oscillator is running during charging and during battery measurements triggered by the PMU. It is off otherwise. 29/140 - 0 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 30 Before switching OFF the software shall have enabled the 32 kHz oscillator and has switched the PMU clock to the 32 kHz clock to archive the target OFF current . 30/140 - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 31: Fem With Integrated Power Amplifier Module

    Arsenide (GaAs) die. One PA block supports the GSM900 band and the other PA block supports the DCS1800 band. Both PA blocks share common power supply pads to distribute current. 31/140 - 2 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 32 C313 1.2p IN CASE OF GSM850/PCS1900 CHANGE THIS MODULE TO PART_NO SMRH0005901(SKY77543) Figure 3.3.3 FEM CIRCUIT DIAGRAM 32/140 -  - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 33: Crystal(26 Mhz, X102)

    Figure. 3.4.1 Crystal Oscillator External Connection 3.5 RF Subsystem of PMB8810 (U101) Figure. 3-5-1 Block DIAGRAM of RF Subsystem 33/140 - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 34: Functional Description

    The analog section of the receiver contains two LNAs, quadrature mixer, low-pass filter, and a high resolution continuous-time delta-sigma analog-to-digital converter. Figure. 3.5.2 RECEIVER CHAIN BLOCK DIAGRAM 34/140 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 35 This reference signal frequency serves as the comparison frequency for the phase detector and provides the digital circuitry with a clock signal. 35/140 - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 36 A minor set of power amplifiers require a bias voltage to enhance power efficiency. Support of this power amplifiers is achieved by the implemented bias DAC. Figure. 3.5.4 PA AND FEM CONTROL BLOCK DIAGRAM 36/140 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 37: Memory (K5N217Ata-At80, U102 )

    At 108MHz, the device provides an m 7ns burst access time and 70ns initial access time. 37/140 - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 38 The K5N6433ATM is suitable for use in data memory of mobile communication system to reduce not only mount area but also power consumption. This device is available in 52-ball FBGA Type. 38/140 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 39: Sim Card Interface

    This signal makes SIM card to HW default status. SIM_CLK This signal is transferred to SIM card. SIM_DATA This signal is interface datum. 39/140 - 40 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 40: Lcd Interface

    PDAs, where long battery life is a major concern. 40/140 - 41 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 • 10% LED Output Current Accuracy • 3% LED Output Current Matching • Low-Current Shutdown Mode • Built-in Thermal Protection 41/140 - 42 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 42: Battery Charger Interface

    +6.9V to protect against unqualified or faulty AC adapters cables. The IC operates over the extended temperature range (-40 C to +85 C) 42/140 - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 43: Keypad Interface

    KEY_IN1 R284 KEY_IN2 R285 KEY_IN3 R286 KEY_IN4 VA209 VA210 VA211 VA212 VA213 Figure 3.10.1 MAIN KEY STRUCTURE 43/140 - 44 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 44 Figure 3.10.2 Block Diagram and System Integration of the KPD 44/140 - 45 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 45: Audio Front-End

    • Analog part The following figure shows an architecture overview of the Audio section. Figure 3.11.1 Audio Section Overview 45/140 - 46 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 46 100% by Firmware. • The high-pass functions of the voiceband filters have to be implemented in firmware on TEAKLite®. 46/140 - 47 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 Loudspeaker driver, b) one mono, differential Earpiece driver and c) one stereo, single-ended (with uni- or bipolar signals), Headset driver. 47/140 - 48 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 48 The buffers are designed to be short circuit protected. Figure 3.11.3 Switching for R/L DACs onto Buffers 48/140 - 49 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 To improve SNR the sample frequency can be doubled in dedicated modes and the modulated data stream is 4MHz instead of 2 MHz. 49/140 - 50 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 50 In case of an digital microphone VMIC can be used for supplying this microphone. Figure 3.11.5 Typical Microphone Supply Generation (alternative) 50/140 - 51 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 51: Key Baclklight Led Interface

    LD203 LD204 LD205 LD206 R229 Q202 KEY_BACKLIGHT KTC4075E_RTK-H 10Kohms EQBN0020501 C283 2.2u Figure 3.12.1 Key Backlight Block 51/140 - 52 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 52: Vibrator Interface

    Figure 3.13.1 Vibrator Driver Block Diagram VB201 R277 VIB_P VIB_N C249 C282 DM-YK407-6F2 R259 SJMY0007905 Figure 3.13.2 Vibrator Driver Block 52/140 - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 53: Torch Led

    TORCH LDO VBAT U406 RP103K311D VOUT R446 TORCH_EN C441 C412 C438 LD401 EUSY0372801 2.2u Figure 3.14.1 Torch block 53/140 - 54 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 54: Camera Interface (Ait701U, U405)

    JPEGCODEC, 2D-Graphic Engine, SD storage interface, LCD Display Interface, and USB interface. Figure 3.15.1 AIT716 BLOCK DIAGRAM 54/140 - 55 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 3. TECHNICAL BRIEF 3. TECHNICAL BRIEF Figure 3.15.2 SENSOR SHIP BLOCK DIAGRAM 55/140 - 56 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 56 PMCLK AIT_26M AIT_BYPASS Figure 3.14.1 Torch block BYPASS MODE HIGH (MAIN LCD) CAMERA MODE Figure 3.15.3 AIT701 CIRCUIT - 57 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 57: Trouble Shooting

    U101 Main Chip (EGV3) U102 Memory U301 FEM (Tx Module) FL301 SAW Filter X101 Crystal, 26MHz Clock 57/140 - 58 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 58: Rx Trouble

    Crystal Circuit (2) Check Mobile SW &TX module (3) Check PLL Control Re-download SW or Do calibration again 58/140 - 59 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 HOT2 GND2 GND1 HOT1 26MHz EXXY0018404 RX12 GSM_RXP RX12X GSM_RXN 1 pin 1Pin Figure 4.2.2 Figure 4.2.3 59/140 - 60 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 60 TO PART_NO ELCH0003844(2nH,LQG15HS2N0S02) PGND15 L304 1.5n C313 1.2p IN CASE OF GSM850/PCS1900 CHANGE THIS MODULE TO PART_NO SMRH0005901(SKY77543) 60/140 - 61 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 61 Replace FL 301 or U301 Signal is OK ? EGSM Rx Mobile SW & TX Module and Saw Filter is OK. 62/140 - 62 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 62: Tx Trouble

    (3) Check PLL Control Redownload SW or Do calibration again Redownload SW or Do calibration again 62/140 63/140 - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 63 ReplaceFEM (U304) TP5 signal same Replace SW301 as TP1? EGSM Tx Mobile SW & FEM is OK. 64/140 - 64 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 64: Power On Trouble

    VPMU Figure 4.4.1 R116=10Kohm R116 RPWRON END_KEY R106 100Kohms R116=10Kohm Figure 4.4.2 Figure 4.4.3 Remote power on 64/140 - 65 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 65 1V8_VDD VCORE VAUX 1V8_VDD1V8_VDD VAUX C131 0.22uF STAR_GND DIRTY_GND CLEAN_GND CLEAN_GND Figure 4.4.4 power block of GS108 65/140 - 66 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 66 Is the phone power on? Re-download software Does it work properly? The phone will Replace the main board Properly operating. 66/140 - 67 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 67: Charging Trouble

    GND1 CHGSB GND2 _CHG_EN1 IEOC EN_SET EUSY0410801 C247 C248 R265 R233 R231 4.7K 1.2K 5.1K Figure 4.5.2 67/140 - 68 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 68 Pin 4 of RT9524 = 4.9V U205 Battery is charged? Replace the main board Charging is properly operating 69/140 - 69 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 69: Vibrator Trouble

    VB201 R277 C131 VIB_P 0.22uF STAR_GND VIB_N C249 C282 DM-YK407-6F2 R259 SJMY0007905 DIRTY_GND Vibrator PAD Figure 4.6.2 69/140 - 70 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 70 ? Replace the U101 Is the voltage at VB201 (+) high? Replace vibrator Vibrator Working well ! 70/140 - 71 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 71: Lcd Trouble

    CN401 C408 U402 C406 R444 R441 R438 R439 R437 R435 R442 R443 R436 R434 R433 Figure 4.7.1 72/140 - 72 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 72: Only For Training And Service Purposes

    MLED1 MLED MLED2 RSET C407 EN_SET W_LED_DRV1 C408 C406 EUSY0238704 R402 R448 4.7K (15K ohm,1/16W,F,1005) Figure 4.7.2 72/140 - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 73: Only For Training And Service Purposes

    4. TROUBLE SHOOTING Waveform Graph 4.7.1. LCD Backlight Dimming Control Signal Waveform Graph 4.7.2. LCD Data Waveform 73/140 - 74 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 74: Only For Training And Service Purposes

    Data pins on CN401 ? Does LCD work Replace LCD module properly ? LCD working well ! 74/140 - 75 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 75: Speaker Trouble

    TEST POINT FB204 FB205 U204 Pin 3 Pin 9 Pin 4 U201 Pin 8 C227 C233 Figure 4.8.1 75/140 - 76 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 76 R205 100Kohms C226 C210 C228 VA203 VA204 0.22uF L201 R215 39pF 39pF REC_IN_P 4.7ohms R217 C202 330p 76/140 - 77 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 77 Working well!! Replace the U204 Replace the U204 FB204,FB205 R251,R252 Speaker Speaker Working well!! Working well!! 77/140 78/140 - 78 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 78: Earphone Trouble

    2. TROUBLE SHOOTING 4.9 Earphone Trouble TEST POINT C220 C219 FB20 FB20 U203 C212 C256 Figure 4.9.1 78/140 - 79 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 79 VAUX R241 R204 MUIC_INT VBUS_USB C244 FM_ANT_1 L202 C245 D201 6.8p 180n MUIC_DM MUIC_DP MUIC_ID GU073-5P-SD-E1500 ENRY0008801 79/140 - 80 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 80 Change the U203,U101 Earphone will work properly Earphone will work properly 80/140 80/140 - 81 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 81: Microphone Trouble

    C206 39pF C215 R212 MIC_N MIC201 100ohms 0.033uF SUMY0007102 R214 C229 C222 2.2Kohms 39pF 39pF C204 C203 81/140 - 82 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 82 Is it a few tens mV AC? Check the soldering of Resolder component R212, R213, C230, C215 Microphone will work properly. 83/140 - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 83: Sim Card Interface Trouble

    J201 GCA26D-6S-H18-E1500 SIM_RST SIM_DATA SIM_CLK GND4 GND1 C216 C225 C218 GND3 GND2 C250 22pF 0.1uF 68pF ENSY0025101 83/140 - 84 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 84 Does it work Does it work Properly? Properly? SIM card is properly working SIM card is properly working. 84/140 - 85 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 85: Key Backlight Trouble

    R228 R230 C246 LD201 LD202 LD203 LD204 LD205 LD206 R229 Q202 KEY_BACKLIGHT KTC4075E_RTK-H 10Kohms EQBN0020501 C283 2.2u 85/140 - 86 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 86 Are all LEDs Check the soldering Working? each R and LED Backlight will Replace or resolder work properly. component 86/140 - 87 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 87: Fm Radio Trouble

    C324 R311 4.7K 470n VBUS_USB C244 FM_ANT_1 L202 C245 D201 6.8p 180n MUIC_DM MUIC_DP MUIC_ID GU073-5P-SD-E1500 ENRY0008801 88/140 - 88 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 88 A condition is good? Replace U102 A condition is good? FM_radio will FM_radio will work properly work properly 89/140 88/140 - 89 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 89: Download

    If you are going to use battery, the voltage of the battery should be over 3.7V for stable power supplying during S/W download. Figure 5.1. S/W download & upgrade setup 89/140 - 90 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 90: Download Program User Guide

    5.2 Download program user guide 5.2.1. After “GSMULTI” folder copy, paste C:\ 5.2.2. “MultiGSM.exe” execution file execute GS108 GS108 90/140 - 91 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 91: Multi-Download Program Setting (Model-Base)

    5. DOWNLOAD 5.3 Multi-Download Program Setting (Model-Base) Multi-Download Program Execution ? Setting : Configuration Setting Completed GS108 GS108 91/140 LGE Internal Use Only - 92 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 92 5. DOWNLOAD 5. DOWNLOAD Stand-by Condition: “Wait phone connecting” confirm -> Phone connection GS108 GS108 92/140 Copyright © 2010 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...

  • Page 93: Block Diagram

    6. BLOCK DIAGRAM 6.Block Diagram 6. BLOCK DIAGRAM 6. Block Diagram LGE Internal Use Only - 94 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes 93/140...

  • Page 94: Circuit Diagram

    NLCD_MAIN_CS (NOT MOUNTED) (FOR SW DEBUGGING / NOT MOUNTED) ON BOARD ARM9 JTAG & ETM INTERFACE TP113 VMIC Copyright © 2010 LG Electronics. Inc. All right reserved. - 95 - LGE Internal Use Only Only for training and service purposes...
  • Page 95 KEY_BACKLIGHT R271 VA209 VA210 VA211 VA212 VA213 10Kohms KTC4075E_RTK-H Q205 VCORE KTC4075E_RTK-H C283 EQBN0020501 10Kohms EQBN0020501 2.2u C284 LGE Internal Use Only - 96 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 96 IN CASE OF GSM850/PCS1900 EQBN0019201 D301 CHANGE THIS MODULE TO PART_NO SMRH0005901(SKY77543) C324 R311 4.7K 470n R301 BAND_DETECT R306 DEFAULT_BANDSEL 100K Copyright © 2010 LG Electronics. Inc. All right reserved. - 97 - LGE Internal Use Only Only for training and service purposes...
  • Page 97 4.7K TF_DATA0 DAT0 (15K ohm,1/16W,F,1005) TF_DATA1 DAT1 AIT_BYPASS C409 COVER_DETECT1 BYPASS MODE HIGH (MAIN LCD) ENSY0023801 CAMERA MODE LGE Internal Use Only - 98 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 98: Bga Pin Map

    8.1 BGA PIN MAP (Top View) 8.1.1 BGA IC pin check (U101) Ball Diagram (Top View), PMB7900(E-GOLDVoice 3) Not Use 101/140 - 99 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 99 8. BGA Pin Map 8.1.2 BGA IC pin check (U102) Ball Diagram (Top View), K5N6433ATM Not Use 102/140 - 100 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 100 8. BGA Pin Map 8.1.3 BGA IC pin check (U405) Ball Diagram (Top View), AIT701U Not Use 103/140 - 101 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 101 - 102 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 102: Pcb Layout

    9. PCB LAYOUT JTAG PAD - Not Mounted LD201 & LD206 - No Key Backlight GS155_MAIN_SPFY0215301-1.0_TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 103 - LGE Internal Use Only Only for training and service purposes...
  • Page 103 SW301(mobile switch) - Can’t make a call -Tx Low power - Not good BER - No Service GS155_MAIN_SPFY0215301-1.0_BOT LGE Internal Use Only - 104 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 104: Engineering Mode

    ‘select’ key to progress the test. Pressing ‘back key will switch back to the original test menu. 103/138 - 105 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 105: Auto Calibration

    ShieldBox_DllD.dll HK_40 Model KF300d Spec_GU230_001 Setup_Cal_Parameter_001 script_001 PwrSupply_Cmd Procedure_GU230_001 Ezlooks AutoSetup_GU230_001 xmm2130_eep008.cfg LG_RfTest_E5515C_122.dll LG_RfCal_InfiKE000Ag_177.dll dwdio.dll LG_UI_Ad6500_004.dll Multi_HK 104/138 - 106 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 106: Description Of Basic File

    Setup Module. -. Spec_GU230_001.xml : Definition Module of Auto Test Spec -. Setup_Cal_Parameter_001.xml : Calibration Definition Module. 105/138 - 107 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 107: Procedure

    Connect as Fig 11-2 (RS232 serial cable is connected between COM port of PC, in general. . Run HK_40exe to start calibration. Click “ Logic Operation” of “SETTING” menu bar 106/138 - 108 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 108 10. Select “ LOGIC MODE” that you want Logic mode: 1-> Calibration only 2-> Auto test only 3-> Cal & Auto 107/138 - 109 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 109 11. AUTO CALIBRATION 11. Select the model name “GS108” Model name Start button 12. Click “start” button 108/138 - 110 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 110: Agc

    Max power Max power 29.5 dBm 29.5 dBm 29.5 dBm 29.5 dBm 29.5 dBm 29.5 dBm 109/138 109/138 - 111 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 111 - 112 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 112: Exploded View & Replacement Part List

    12. EXPLODED VIEW & REPLACEMENT PART LIST 12.1 EXPLODED VIEW Copyright © 2010 LG Electronics. Inc. All right reserved. - 113 - LGE Internal Use Only Only for training and service purposes...
  • Page 113 ASS’Y EXPLODED VIEW LGE Internal Use Only - 114 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 114: Replacement Parts

    COMPLEX, (empty), 0.8, , , , COLOR MWAE00 WINDOW,CAMERA MWAE0061301 CUTTING, PMMA MR 200, , , , , BLACK - 115 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 115 LABEL MLAZ0038301 PID Label 4 Array COLOR WITHOUT SC201 CAN,SHIELD MCBA0064301 PRESS, STS, 0.2, , , , COLOR - 116 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 116: Main Component

    0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C112 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C113 CAP,CERAMIC,CHIP ECCH0000161 33 nF,16V,K,X7R,HD,1005,R/TP - 117 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 117 ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C212 CAP,CERAMIC,CHIP ECCH0000179 22 nF,16V ,K ,X5R ,HD ,1005 ,R/TP C213 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP - 118 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 118 1 uF,25V ,K ,X5R ,HD ,1608 ,R/TP C283 CAP,CERAMIC,CHIP ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP C301 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP - 119 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 119 ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C420 CAP,CERAMIC,CHIP ECCH0000112 15 pF,50V,J,NP0,TC,1005,R/TP C421 CAP,CERAMIC,CHIP ECCH0000112 15 pF,50V,J,NP0,TC,1005,R/TP - 120 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 120 FILTER,BEAD,CHIP SFBH0008101 600 ohm,1005 , FB202 FILTER,BEAD,CHIP SFBH0008101 600 ohm,1005 , FB203 FILTER,BEAD,CHIP SFBH0007101 120 ohm,1005 ,Ferrite Bead - 121 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 121 MIN 700 MAX ,100mW ,ESM ,R/TP ,3P VSM ,0.1 W,R/TP ,1.2*1.2*0.5 Vcbo=20, Vceo=12, Vebo=2V, Q301 TR,BJT,NPN EQBN0019201 Ic=100mA - 122 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 122 30 Kohm,1/16W ,F ,1005 ,R/TP R241 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP R242 RES,CHIP,MAKER ERHZ0000204 100 Kohm,1/16W ,F ,1005 ,R/TP - 12 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 123 2200 ohm,1/16W ,J ,1005 ,R/TP R411 RES,CHIP,MAKER ERHZ0000486 47 Kohm,1/16W ,J ,1005 ,R/TP R412 RES,CHIP,MAKER ERHZ0000486 47 Kohm,1/16W ,J ,1005 ,R/TP - 124 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 124 MiniQFN-10L ,10 PIN,R/TP ,1.8X1.4X0.55,0.6 Dual SPDT Analog U201 EUSY0347001 Switch ,; ,IC,Analog Switch U203 EUSY0406901 WLCSP ,20 ,R/TP ,MUIC-Basic, 2X2.5 ,; ,IC,Analog Switch - 125 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 125 ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP C239 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP C241 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP C242 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP - 126 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 126 100 ohm,1/16W ,J ,1005 ,R/TP R281 RES,CHIP ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP R282 RES,CHIP ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP - 127 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 127 5.6 V, ,SMD ,360pF, 1005 VA213 VARISTOR SEVY0004101 5.6 V, ,SMD ,360pF, 1005 VA214 VARISTOR SEVY0004101 5.6 V, ,SMD ,360pF, 1005 - 128 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 128: Accessory

    Remark SUSY00 SPEAKER SUSY0028904 PIN ,8 ohm,91 dB,1812 mm,3.0t contact ,; , , , , , , ,[empty] - 129 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

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