LG GD88O Service Manual

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Internal Use Only

Service Manual

GD880

Date: March, 2010 / Issue 1.0

Table of Contents

Troubleshooting

Summary of Contents for LG GD88O

Page 1 Internal Use Only Service Manual GD880 Date: March, 2010 / Issue 1.0...
Page 2: Table Of Contents
4.2 Signal Path ..................88 4. Checking TCXO Block ..............92 4.4 Checking FEM Block ..............9 4.5 Checking WCDMA Block ............96 - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only 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
Part Name Comment Digital Baseband MSM7227 : Qualcomm Analog Baseband PM7540 : Qualcomm RF Chip RTR6285 : Qualcomm - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9: Hw Features
Status Indicator Keypad Function Key : 2 Function Key: Side Key CAM, Power Side Key : Volume up/down - 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10 Voice Recording Speaker Phone mode Support T ravel Adapter CDROM Stereo Headset Data Cable T -Flash (External Memory) - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11: Sw Features
EMS Melody / Picture Send / Receive / Save Receive only MMS MPEG4 Send / Receive / Save - 12 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 GPRS Class 12 EDGE Class 12 Hold / Retrieve Conference Call Max. 6 DTMF Memo pad SyncML Email - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 13: Hw Spec
Speech channels : -98dBm/-96dBm (2.439%) AM Suppression -98dBm/-96dBm (2.439%) GSM : -31dBm DCS : -29dBm Timing Advance ± 0.5T - 14 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14 < 17.5 %, when Pout ≥ -20 dBm Peak Code Domain Error < -15 dB at Pout -20 dBm - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 15 +1.5/4 Inner Loop Power Control -0.5/+0.5 -0.5/+0.5 -0.5/+0.5 In Uplink -0.5/-1.5 -1/-3 -1.5/-4 group(10equal command group) +8/+12 +16/+24 - 16 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16 Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0 (BLER or R), 16QAM Only BLER < 10% or R >= 700kbps - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 17 ≥ -10dBm(1Mbps,2Mbps,5.5Mbps,11Mbps) @ FER ≤ 8% Rx Adjacent Channel ≥ 35dB @FER ≤ 8%, Rejection interference input signal -70dBm@fc±25MHz(11Mbps) - 18 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 18 1574.42 MHz ~ 1576.42 MHz Minimum Sensitivity 1 satellite ≥-142dBm, 7 satellites ≥ -147dBm at coarse time aiding - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19: Gd880 Figures
2. PERFORMANCE GD880 Product SPEC 2.7 GD880 Figures - 20 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20: Technical Brief
PS data rate – 384 kb/s DL/384 kb/s UL CS data rate – 64 kb/s DL/64 kb/s UL AMR (all rates) - 21 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 21: Hardware Architecture
UART3/UIM2 USIM Translator UART3/UIM2 : N.A Figure. Simplified Block Diagram of System Figure. Simplified Block Diagram of System - 22 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 VREG_MOTOR_3.0V (300mA) BACKUP Battery VCOIN VREG_WLAN Linear Motor Driver ( 3.0V, mA ) Figure. Simplified Block Diagram of System - 2 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 23 VBAT VREG_MSMP_2.6V VDDIO/VDDIO_SD 26MHz TCXO for WIFI/BT/FM LDO(2.8V) Audio Sub System MUIC Figure. Simplified Block Diagram of System - 24 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24: Subsystem(Msm7227)
- 1.8 or 2.6 V memory interface support - NAND/OneNAND™ flash memory interface - Boot from NAND/OneNAND - LCD and Universal Broadcast Modem™ (UBM™) support - 25 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 25 PS data rate – 384 kb/s DL/384 kb/s UL CS data rate – 64 kb/s DL/64 kb/s UL AMR (all rates) - 26 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 Switch between HSUPA channels and DPCH channel resources as directed by the network Handover using compressed mode with simultaneous E-DCH and HS-DSCH interactive/background and streaming QoS classes - 27 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 27 SRB loopback and test mode B 8-bit and 11-bit RACH PBCCH support One-phase/two-phase access procedures Link adaptation and IR NACC, extended UL TBF - 28 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 - Statistical techniques such as pre-zoom statistic gathering, AE/AWB, and histogram - Gain adjustments including 4-channel and white balance - Chroma subsampling, high-quality downscaler, and Bayer noise filter - 29 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 Enhanced acoustic echo cancellation for full-duplex calls PureVoice Audio AGC™ Internal vocoder supporting 13 kb/s PureVoice® 3.3.4.6 LCD controller Parallel LCD support RGB888 interface - 0 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 Transport stream interface (TSIF) and the ability to support broadcast technologies, including the Qualcomm MediaFLO™ technology, DVB-H, ISDB-T, T-DMB, and S-DMB - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 31 - General-purpose clock, M/N counter, and PDM outputs - Internal watchdog and sleep timers Modes and resets Power optimization JTAG/ETM - 2 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32 1.05 mm outline 0.4 mm pitch Many ground pins for improved electrical grounding, mechanical strength, and thermal continuity - - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 33: Power Block
Interrupt Manager for time-critical information. Another dedicated IC Interface circuit monitors multiple trigger events and controls the power-on sequence. - 4 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 3. TECHNICAL BRIEF 3. Technical Brief Figure. PM7540 Functional Block Diagram - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 35 So it is necessary external charging path TR. This is NUS5530. This part also include battery side power path. NUS5530 - 6 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 (3.2V). The charging current is set to 80mA. Parameter Unit Trickle Current PM7540 Input Power Management - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 37 0.05V (Stand-by) / Low Voltage, 0.05V (Talk) Warning message+ Blinking [Interval : 3min(Stand-by) / 1min(Talk)] Power Off 0.05V - 8 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38: External Memory Interface
(Flash / DRAM) 1.8V NAND H8BCS0UN0MCR- Hynix H8B ES0UU0MCR-4EM 45ns / 400MHz 1.8V SDRAM Table#1. External memory interface for GD880 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 39 MMC_DATA[3:0] MICROSD_DATA[:0] External Memory MICROSD_CM MMC_CMD (MICRO SD card) MMC_CLK MICROSD_CLK Figure. Simplified Block Diagram of Memory Interface - 40 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40: W Sub System
GSM_PA_EN: Power Amp Gain Control Enable of APC_IC C. ALM2412 (A-GPS LNA) * GPS_LNA_EN: GPS LNA Enable Signal (GPS LNA Shutdown) - 41 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41 * CLK_IN: Crystal amplifier input or frequency reference input. * CLK_REQ: Crystal Circuit / Reference Clock Enable (active-high) - 42 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42 FM_AUDIO_R : Right audio line output – digital input data. FM_AUDIO_L : Left audio line output – digital frame synchronization. - 4 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 43 GSM_PA_DAC_REF MPP_8 GSM_BG_REF PMIC GPS_IN PMIC_SSBI PM7540 GPIO106 GPS Antenna SBDT_SSBI GPS_EN Figure. Block Diagram of RF Interface - 44 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44 3. TECHNICAL BRIEF 3. Technical Brief Figure. Block Diagram of RF Interface - 45 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 45: Msm Sub System
UART signals are connected to MSM GPIO through IO connector with 115200 bps speed. GPIO_Map Name Note GPIO_86 UART3_RX Data_Rx GPIO_87 UART3_TX Data_Tx Table. UART Interface - 46 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 3.3V LDO USBH_CS TCXO. USBH_CLK MSM7227 USBH_DM u-USB MAX14526 USBH_DP Connector. Figure. USB block(MSM7227 Side & MAX14526 Side) - 47 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47: Side Key
Table. Key Matrix Mapping Table POWER ON KB300 R306 PM_ON_SW D302 Figure. Power ON / OFF & Suspend Button Key circuit - 48 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48 KB301 KB302 KEY_COL[1] KEY_ROW[0] KEY_ROW[1] Key Circuit Figure. Volume SW300 KEY_COL[0] capture KEY_ROW[1] KEY_ROW[0] Figure. Camera Key Circuit - 49 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49 FLT_LCD_B[5] FLT_LCD_DCLK FLT_LCD_B[4] FLT_LCD_DEN FLT_LCD_B[3] FLT_LCD_HSYNC FLT_LCD_B[2] FLT_LCD_VSYNC FLT_LCD_B[1] FLT_LCD_B[0] FLT_LCD_SDI FLT_LCD_SDO FLT_LCD_SCL FLT_LCD_CS_N Figure. Touch Sensor Schematic - 50 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 X/Y Channels T1021(TOUCH IC) GPIO2 : TOUCH_IC2_SCL GPIO3 : TOUCH_IC2_SDA GPIO84 : TOUCH_ACK Figure. Touch Sensor Block Diagram - 51 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 51: Audio And Sound
EAR_MICP EAR_MICP Figure. Block diagram of Audio & Sound path Figure. Block diagram of Audio & Sound path - 52 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 The DSP audio processing is configured through the QDSP5000 command types and is not directly controlled by the microprocessor. - 5 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 53 MAX9877. The MAX9877 is available in a thermally efficient, space-saving 20-bump WLP package. - 54 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54 3. TECHNICAL BRIEF Figure. Detailed diagram of MAX9877 audio interface - 55 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 55 MIC_P MIC_BIAS MIC_2P MIC_SEL MIC2_VGND MIC_2P MIC1_VGND SUMY0010609 MIC1_VGND MIC_VGND MIC_1P MIC400 SMD, TOP MIC2_VGND C400 0.1u MIC2_VGND - 56 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 56 LINE_ON INB2 C509 LINE_OP SPK_P INB1 OUT+ BIAS OUT- SPK_N AUDIO_I2C_SDA AUDIO_I2C_SCL RXIN+ RXIN- 4.7K 4.7K C505 VREG_MSMP_2.6V - 57 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 57: Camera / Lcd
INOUT_B2 S_CAM_DATA[9]|S_VGA_CAM_DATA[7] CAM_HSYNC FLT_CAM_HSYNC INOUT_A3 INOUT_B3 CAM_PCLK INOUT_A4 INOUT_B4 FLT_CAM_PCLK 7.5pF Figure. Schematic of 5 Mega Camera I/F - 58 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58 MSM7227 again. The camera module is controlled by I2C port from MSM7227. - 59 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 59 (max.30fps@VGA), vertical sync signal, horizontal sync signal, reset signal and 8bits data from camera module. The camera module is controlled by I2C port from MSM7227. - 60 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 60 LCD_CVT_RESET LCD_CVT_INT LCD_CVT_VSYNC LCD_RESET_N LCD_RESET_N VREG_RGB_1.5V VREG_RGB_2.6V I/O Vcc(1.8V) VREG_LCD_1.8V Vcc(2.8V) VREG_LCD_2.8V PM7540 Figure. LCD I/F Block Diagram - 61 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 61 FLT_LCD_SCL FLT_LCD_CS_N Figure. Schematic of LCD connector (in Sub PCB) Figure. Schematic of LCD connector (in Sub PCB) - 62 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62: Pin Description
3. TECHNICAL BRIEF 3.8.5 Pin Description Input Signal and Power: Pin Description (60Pin, AXT660124 - 6 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 63 3. TECHNICAL BRIEF 3. Technical Brief Table. Interface between LCD Module and MAIN Board - 64 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64: Proximity Sensor
GPIO122 : PRGXI_SCL GPIO123 : PROXI_SDA GPIO122 : PRGXI_SCL Figure. Proximity Sensor Block Diagram Figure. Proximity Sensor Block Diagram - 65 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 65: Luminance Sensor
Luminance Sensor Block Diagram Luminance Sensor Block Diagram (BD6083GUL) (BD6083GUL) (BD6084GUL) (BD6084GUL) U100 U100 U101 ALS(BH1621FVC) U200 U301 U301 MSM7227 MSM7227 - 66 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66: Motion Sensor
Sub-PCB MSM7227 MSM7227 VREG_MSMP_2.6V GPIO 18 : Motion_INT U303 U303 BMA150 GPIO38 : Motion_I2C_SDA BMA150 GPIO37 : Motion_I2C_SCL - 67 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 67: Vibrators
VREG_MOTOR_3.0V EUSY0200803 U302 L300 100n LIN_MOTOR_EN 100n LIN_MOTOR_PWM L301 VB300 Linear Motor PAD TYPE C308 C307 510K 3.9n - 68 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68: Main Board
Linear motor Linear motor GPIO 58 : LIN_MOTOR_EN GPIO 26 : LIN_MOTOR_EN Circuitry motor Circuitry connector Main Board - 69 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 69: Gsm Mode
RF filter outputs all the way into the IC pins. [Figure 1-2] DCS and PCS Receiver Inputs Topologies - 70 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70 GSM application. Both high-band and low band outputs are followed by resistive pads to ensure that the load presented to the outputs remains close to 50ohm. - 71 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 71: Umts Mode
RTR6285 is downconverting GSM signals and on when the UMTS is operating. [Figure 1-4] UMTS Receiver Inputs Topologies - 72 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 72 FVCO to equal FRF. The RTR6285 IC is able to support UMTS 2100/1900/1800/1700 and 850 mode transmitting. This design guideline shows only UMTS 2100 applications. - 7 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 73 3. TECHNICAL BRIEF 3. Technical Brief [Figure 1.5] RTR6285 IC Functional Block Diagram - 74 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 74: Gps Receiver
With the integrated fractional-N PLL synthesizers, the RTR6285 ICs have the advantage of more flexible loop bandwidth control, fast lock time, and low-integrated phase error. - 75 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 75: Off-Chip Rf Components
The Module is housed in a cost effective, small and thin 4x5mm package. - 76 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 76 MSM side, and isolate from digital logic and clock traces with ground on both sides, plus ground above and below if routed on internal layers. - 77 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 77 The active connection is MSM-selected by three control lines (GPIO[72], GPIO[73], GPIO[74] and GPIO[75]). These GPIOs are programmed to be ANT_SEL3, ANT_SEL2, ANT_SEL1 and ANT_SEL0 respectively. - 78 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 78 GSM (logic 0) or DCS/PCS (logic 1) as determined from the Band Select (BS) signal. See Figure shown below. - 79 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 79: Lg Gd880 Main Features
- MPEG4 encoder/decoder and play/save - JPEG en/decoder - Supports Bluetooth and HS-USB - Supports WLAN - 900 mAh (Li-Ion Polymer) - 80 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 80: Gd880 Main Component
VGA Camera LCD Connector 5M Camera Connector Proximitor Sensor SD Socket Connector Logic Sub board, Bottom Sub board, Top - 81 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 81: Main Components
RTR6285(Transceiver) FL1004 WCDMA (I) RX SAW Filter SW1002 RF Antenna connector FL1001 GPS SAW Filter U1001 GPS LNA - 82 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82 SIM Connector U403 Power MOSFET for Changing ANT600 WiFi/BT Antenna U404 Over-voltage Protection IC500 AUDIO_SUB_SYSTEM U401 LDO for USB - 8 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 83 J500 3.5phi Ear-Jack CN400 Micro USB 5Pin Con. U600 Wi-Fi &BT Module X200 TCXO (19.2MHz) X600 TCXO (26MHz) - 84 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 84 CN100 LCD Connector U100 RGB Converter U300 Proximitor Sensor U200 VGA Camera CN200 Sub to Main connector MIC401 - 85 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 85: Trouble Shooting
4. TROUBLE SHOOTING 4.1 RF Component FL1001 FL1004 U1001 FL1005 FL1006 U1003 U1002 FL1003 FL1002 FL1007 U1004 SW1002 SW1002 - 86 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 FL1003 WCDMA (1) Duplexer SW1001 RF Antenna Connector FL1004 WCDMA (1) Rx Saw Filter SW1002 RF Mobile Switch - 87 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 87: Signal Path
4.2 Signal Path GSM850/GSM900/DCS/PCS’s RX/TX Signal PATH A. GSM850/GSM900/DCS1800/PCS1900 RX PATH B. GSM850/GSM900/DCS1800/PCS1900 TX PATH C. COMMON TX/RX PATH - 88 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88 WCDMA BAND I and VIII RX Signal PATH D1. WCDMA 2100 RX PATH E1. W900 RX PATH F1. COMMON TX/RX PATH - 89 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 89 WCDMA BAND I and VIII TX Signal PATH D1. WCDMA 2100 TX PATH E1. W900 TX PATH F1. COMMON TX/RX PATH - 90 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 90 4. TROUBLE SHOOTING 5.Trouble Shooting (RF) GPS Signal PATH F. GPS Rx PATH - 91 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 91: Checking Tcxo Block
USBH_SYSCLK C209 100p NC7SV00P5X_NL R213 100K Schematic of the Crystal Part (19.2MHz) Schematic of the Crystal Part (19.2MHz) - 92 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 92: Checking Fem Block
4. TROUBLE SHOOTING 5.Trouble Shooting (RF) 4.4 Checking FEM Block VREG_SYNTH_2.75V ANT_SEL2 ANT_SEL3 ANT_SEL0 ANT_SEL1 - 9 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 93 VREG_SYNTH_2.75V C1043 C1019 0.1u R1022 ANT_SEL0 R1023 ANT_SEL1 R1024 ANT_SEL2 R1025 ANT_SEL3 Schematic of the Antenna Switch Block - 94 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 94 4. TROUBLE SHOOTING 5.Trouble Shooting (RF) Checking Switch Block Power Source - 95 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 95: Checking Wcdma Block
4. Check PAM Block Refer to 4. 5. 4 5. Check RF Level 6. Re-download SW & Cal. - 96 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 96: Only For Training And Service Purposes
4.3 4.5.2 Checking FEM Block refer to 4.4 4.5.3 Checking RF TX Level Test Point (TX Level) - 97 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 97: Only For Training And Service Purposes
PDET_IN Band 1 BAND 1/2 1.2n 1950MHz,2140MHz BAND1(2520):SAYP1G95AA0B00 BAND2(2520) : ACMD-7407 For testing, Max power output is needed. - 98 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98: Only For Training And Service Purposes
PAM (ACPM 5281) = Maximum input Power = 8 dBm(High Power Mode ), 5 dBm( Low Power Mode ) - 99 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 99: Only For Training And Service Purposes
When PAM is under the operation of high power mode (W_PA_R0 :Low), PAM OUT power must be over 21 dBm PAM IN power must be under 8 dBm 100P - 100 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100: Only For Training And Service Purposes
Check TP2 Check MSM7227 W_PA_R0 ? 2.6 V Check TP1 Check RTR6285 Over 8 dBm? Change the board - 101 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 101: Only For Training And Service Purposes
4. TROUBLE SHOOTING 5.Trouble Shooting (RF) 4.5.5 Checking RF Rx Level Bias Test Point (RF Rx Level) 102P - 102 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102: Only For Training And Service Purposes
WCDMA_850 WCDMA_1900 PCN_PCS_TX GSM850_EGSM_TX L1002 850,1900,2100MHz VREG_SYNTH_2.75V C1043 C1019 0.1u R1022 ANT_SEL0 R1023 ANT_SEL1 R1024 ANT_SEL2 R1025 ANT_SEL3 - 10 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 103: Only For Training And Service Purposes
_OUT G1 G3 C1111 C1086 1.8p WB2100_MIX_INP WCDMA RX 2100 LNA Circuit W2100 RX(2110 - 2170 MHz) 2140MHz - 104 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 104: Only For Training And Service Purposes
Signal exist ? Check TP 4 Check RTR 6285 and Signal exist ? Rx SAW filter Change the board 105P - 105 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 105: Checking Gsm Block
3. Check RF TRX Level 3. Check RF TRX Level 4. Re-download SW & Cal. 4. Re-download SW & Cal. - 106 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 106 4.6.1 Checking TCXO Block refer to 4.3 4.6.2 Checking FEM Block refer to 4.4 4.6.3.1 Checking RF TX Level 107P - 107 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 107 PGND3 L1015 C1044 PGND9 PGND4 PGND8 PGND5 PGND7 PGND6 GSM850(824-849 MHz) GSM900(880-915 MHz) Schematic of GSM850/GSM900/DCS/PCS TX Block - 108 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 108 If DCS /PCS (TP 3) under 6 dBm ? No Problem Check soldering and Check RTR & PAD components Still exist Problem Change the board 109P - 109 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 109 4. TROUBLE SHOOTING 5.Trouble Shooting (RF) 4.6.3.2 Checking RF RX Level 110P - 110 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 110 C1043 L1008 GSM(869-894 MHz) C1019 0.1u 2.7p C1012 RX_GSM_850_P R1022 R1023 R1024 R1025 Schematic of GSM850/GSM900/DCS/PCS RX Block - 111 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 111 Check RF Switch ( Mobile Switch) Signal exist ? Check TP 2 Check FEM Block Signal exist ? Refer Change the Board 112P - 112 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 112: Gps/Wifi/Bt/Fm Radio Rf Components
FL1001 GPS SAW FILTER ANT1002 GND PAD U1001 GPS LNA FL1001 GPS SAW FILTER U1001 GPS LNA 113P - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 113 U600 RF component (WiFi / BT /FM Radio) Reference Description ANT600 ANTENNA(chip Antenna) U600 Wifi/BT/FM Combo Chip 114P - 114 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 114: Gps/Wifi/Bt/Fm Radio Signal Path
5.Trouble Shooting (RF) 4.8 GPS/WIFI/BT/FM Radio SIGNAL PATH RF component (GPS) FM Radio SIGNAL PATH WIFI/BT SIGNAL PATH - 115 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 115: Gps/Wifi/Bt/Fm Radio Trouble Shooting
C1108 C1004 3.9n C1015 1575.42MHz R1014 C1034 GPS_LNA_EN GPS_IN FIL_OUT U1001 C1106 SMZY0016501 Schematic of A-GPS Block 116P - 116 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 116 Check power LRC filter About 2.7V ? soldering Check TP2 Check SW and NV item About 2.6V ? Change the board - 117 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 117 4. TROUBLE SHOOTING 5.Trouble Shooting (RF) 4.9.2 WIFI/BT/FM Radio Block - 118 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 118 U601 VDD_TCXO VOUT C622 CLK_IN CLK_REQ TG-5010LH-87N X600 C600 C601 C619 R605 2.2uF 100K Schematic of WIFI/BT Module - 119 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 119 Power for BT/Wifi BB core and Wifi Power Amp. VREG_MSMP_2.6V Power for BT Power Amp (2.6V) VREG_MSMP_2.6V Power for host interface (2.6V) 120P - 120 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120 On/Off Control external clock source CLK_REG 0 : TCXO off 1 : TCXO on CLK_IN TCXO output clock : 26 MHz 121P - 121 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 121: Power On Troubleshooting
LCD is turn on? Sub B/d CN100 and LCD module Redownload sw image Change LCD module *OCV( open circuit voltage) - 122 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122 4. TROUBLE SHOOTING 4. Troubleshooting (BB) TP1: go to low KB300 R306 PM_ON_SW D302 - 12 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 123 Clesed to TCXO VREG_MSMA_2.6V R404 C219 200K 0.1u U202 TCXO_EN R210 USBH_SYSCLK C209 100p NC7SV00P5X_NL R213 100K TP10 - 124 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124 4. TROUBLE SHOOTING 4. Troubleshooting (BB) PM7540 Power sequence - 125 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 125: Charger Troubleshooting
- Charging current path(NUS5530) - Check the OVP Circuit - Battery - Check the charging current Path - Check the battery - 126 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 126 Check TP1 SMT status by X-ray Exchange TP1 or Change the Main board And Retest Charger Troubleshooting Flow - 127 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 127 FL400 C457 C444 NFM21PC105B1A3 CN400 Close by uUSB CONN MAX_DM MAX_DP USB_ID D401 Close by uUSB CONN HSMU-5SB-24DR2 - 128 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 129: Usb Trouble
Check TP3 TP4 CLK is OK? Check TP1 TP5,TP6 signal is out? Change the Main board 130 P - 10 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130 MAX_DP COMP2 USBH_DP U402 USB_ID UART2_RXD MAX14526EEWP+TCC6 UART2_TXD R426 2.2K AUD1 AUD2 VREG_MSMP_2.6V C451 ISET MAX_MUIC_I2C_SCL MAX_MUIC_I2C_SDA MUIC_SW_INT - 11 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 132: Audio Trouble
Can you hear the tone? Can you hear the tone? CN400 RCV_P RCV_N C402 C411 133 P 133 P - 1 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 134: Audio Subsystem
EAR_L 1800 EAR_R FB503 1800 FM_ANT C518 C517 D505 D502 D503 D501 C514 100n 100p L500 135 P - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 136 Change the Speaker Module Can you hear the tone? CN401 SPK_P SPK_N C410 C409 137 P - 17 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 138 Check 80pin Conn. Can you scoping some Or Change the SUB PCB sound signal at TP2? Work well? 139P - 19 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 140: Speaker Phone Mode
Check 80pin Conn. Can you scoping some Or Change the SUB PCB sound signal at TP2? Work well? 141P - 141 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 142 Check TP3 Can you scoping some Or Change the Main b’d sound signal at TP3? Work well? 143P - 14 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 144: Camera Trouble
Check the TP5 Change the camera Change the Filter (FL200,201,202) Camera is OK Change the Sub board 145P - 145 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 145 CAM_DATA[8] S_CAM_DATA[8]|S_VGA_CAM_DATA[6] INOUT_A1 INOUT_B1 S_CAM_DATA[9] CAM_DATA[9] INOUT_A2 INOUT_B2 S_CAM_DATA[9]|S_VGA_CAM_DATA[7] CAM_HSYNC FLT_CAM_HSYNC INOUT_A3 INOUT_B3 CAM_PCLK FLT_CAM_PCLK INOUT_A4 INOUT_B4 7.5pF - 146 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 147: Vga Camera Trouble
TP2, TP3 Check Check master clock and pixel clock Change the camera Camera is OK Change the Sub PCB - 148 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148 RESET DATA5 CAM_I2C_SDA S_VGA_CAM_DATA[6] DATA6 CAM_I2C_SCL S_VGA_CAM_DATA[7] DATA7 D200 GND1 GND2 VDD15_1 GND3 VDD15_2 GND4 C209 0.1u - 149 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes 149P...
Page 149: Main Lcd Trouble
Change the SUB BD Display OK? Change the Main BD Display OK? Change the LCD module The LCD works - 150 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 R100 LCD_SCL FPSCK CLKI FPAO LCD_SDO OSCI FPSO OSCO R111 FA-238_27MHz_9PF X100 C117 C118 5.6p 5.6p 27MHz - 151 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only 151P Only for training and service purposes...
Page 151 FLT_LCD_G[0] FLT_LCD_B[7] FLT_LCD_B[6] FLT_LCD_B[5] FLT_LCD_DCLK FLT_LCD_B[4] FLT_LCD_DEN FLT_LCD_B[3] FLT_LCD_HSYNC FLT_LCD_B[2] FLT_LCD_VSYNC FLT_LCD_B[1] FLT_LCD_B[0] FLT_LCD_SDI FLT_LCD_SDO FLT_LCD_SCL FLT_LCD_CS_N - 152 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes 152P...
Page 152: Sim Detect Troubleshooting
TP1, TP2, TP3, Check J1 TP4 is run? Change SIM card Work well? Change the Sub board 153P - 15 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 153 D504 USIM_CLK USIM_RST USIM_DATA VREG_RUIM_3.0V GND1 USIM_RST USIM_DATA USIM_CLK GND5 GND2 GND4 GND3 C522 C500 C520 C519 154P - 154 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154: Side Key Troubleshooting
MDDI_P_STB_M VREG_MSMP_2.6V LCD_CVT_INT LCD_CVT_RESET_N LCD_CVT_VSYNC TP4 TP PM_ON_SW R211 KEY_ROW[0] R212 KEY_ROW[1] R213 KEY_COL[0] R214 KEY_COL[1] LIN_MOTOR_EN 155P - 155 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 156: Linear Motor
Linear Motor PAD status by X-ray, TYPE is working? Exchange it C308 C307 510K 3.9n Check SW 157P - 157 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 157: Proximity Sensor On/Off Trouble
Change the sensor TP1 output check (U300) Change the Main Board Work well? Change the Sub Board 158P - 158 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158 R311 VREG_SENSOR_2.6V C304 C302 C301 2.2u 0.1u U300 R308 VREG_SENSOR_2.6V 4.7K R309 4.7K VREG_SENSOR_2.6V PROXI_I2C_SCL C305 PROXI_I2C_SDA 159P - 159 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 159: Luminance Sensor On/Off Trouble
TP1, TP2, TP3, TP4 check Change the Luminance sensor TP5,TP6,TP7,TP8 check U301 Change the Sub Board Work well? 160P - 160 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 160 C115 C116 2.2u 2.2u 2.2u 2.2u Ambient Light Sensor U301 SBIAS SENS IOUT GND1 GAIN1 GAIN2 C306 161P - 161 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 161: Motion Sensor On/Off Trouble
Change The Main Board Change the Motion sensor TP1,TP2 check U303 Change the Sub Board Work well? 162P - 162 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 162 -. MOTION_I2C_SDA / SCL : data / CLK pulse (R315, R316) Motion Sensor VREG_MSMP_2.6V VREG_MSMP_2.6V U303 4.7K 4.7K VDDIO MOTION_I2C_SDA TP300 MOTION_INT 0.1u MOTION_I2C_SCL C300 C309 163P 163P - 16 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 176: Block Diagram
UART1/DM : BT MUIC USIM D+ / D- URRT2/DM : UART2(DP) UART2/UIM : USIM UART3/UIM2 USIM Translator UART3/UIM2 : N.A - 177 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 177 USIM SLOT (3.0V , , 1mA ) VBACK_UP VREG_MOTOR_3.0V (300mA) BACKUP Battery VCOIN VREG_WLAN Linear Motor Driver ( 3.0V, mA ) - 178 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 178 MLED ( 7ea ) WIFI/BT/FM MODULE VBAT VREG_MSMP_2.6V VDDIO/VDDIO_SD 26MHz TCXO for WIFI/BT/FM LDO(2.8V) Audio Sub System MUIC - 179 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 179 FM_AUDIO_R : Right audio line output – digital input data. - 180 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes FM_AUDIO_L : Left audio line output – digital frame synchronization.
Page 180 FM_AUDIO_R : Right audio line output – digital input data. FM_AUDIO_L : Left audio line output – digital frame synchronization. - 181 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 181 TCXO_PM_19.2MHz RX_WCDMA_2100 PMIC_TCXO TXCO_IN TCXO_OUT TCXO GSM_PA_DAC_REF MPP_8 GSM_BG_REF PMIC GPS_IN PMIC_SSBI PM7540 GPS Antenna GPIO106 SBDT_SSBI GPS_EN - 182 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 182 6. BLOCK DIAGRAM 3. Technical Brief Figure. Block Diagram of RF Interface - 18 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 184: Circuit Diagram
C1086 1.8p WB2100_MIX_INP WCDMA RX 2100 LNA Circuit W2100 RX(2110 - 2170 MHz) 2140MHz LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 185 - LGE Internal Use Only Only for training and service purposes...
Page 185 ON_SW VBAT VBAT TP207 UART2_TXD TP206 URXD TP200 TP208 UTXD REMOTE_PWR_ON UART_TP C222 R204 LGE Internal Use Only LGE Internal Use Only - 186 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 186 C325 C324 C323 C334 C329 C328 C327 C322 C301 0.1u 0.1u 0.1u 0.1u 0.1u LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 187 - LGE Internal Use Only Only for training and service purposes...
Page 187 C451 ISET MAX_DM MAX_DP USB_ID D401 MAX_MUIC_I2C_SCL MAX_MUIC_I2C_SDA MUIC_SW_INT Close by uUSB CONN HSMU-5SB-24DR2 LGE Internal Use Only LGE Internal Use Only - 188 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 188 CAM_DATA[8] MICROSD_DATA[2] CAM_DATA[9] MICROSD_DATA[3] MICROSD_CMD VGA_CAM_PWDN MICROSD_CLK VGA_CAM_RESET_N MICROSD_DET_N CAM_I2C_SCL TOUCH_I2C_SCL CAM_I2C_SDA TOUCH_I2C_SDA TOUCH_ACK LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 189 - LGE Internal Use Only Only for training and service purposes...
Page 189 U601 VDD_TCXO VOUT C622 CLK_REQ CLK_IN TG-5010LH-87N X600 C600 C601 R605 C619 2.2uF 100K LGE Internal Use Only LGE Internal Use Only - 190 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 190 SGND LDO2O GAIN2 LDO3O GAIN1 LDO4O C122 C123 C115 C116 2.2u 2.2u 2.2u 2.2u LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 191 - LGE Internal Use Only Only for training and service purposes...
Page 191 FLT_CAM_HSYNC MICROSD_DET_N CAM_I2C_SCL INOUT_A3 INOUT_B3 CAM_PCLK INOUT_A4 INOUT_B4 FLT_CAM_PCLK TOUCH_I2C_SCL CAM_I2C_SDA TOUCH_I2C_SDA TOUCH_ACK 7.5pF LGE Internal Use Only LGE Internal Use Only - 192 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 192 Close (Detect =COM) U301 HIGH (Normal) Open SBIAS IOUT SENS GND1 GAIN1 GAIN2 C306 LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. - 193 - LGE Internal Use Only Only for training and service purposes...
Page 193 Backup BAT contact CNT BAT400 CN402 VBACK_UP SW400 ANT401 ANT400 100p C404 C412 C403 100p LGE Internal Use Only LGE Internal Use Only - 194 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 194: Bga Pin Map
8. BGA PIN MAP 8. BGA PIN MAP U200 (560 NSP) Great Company Great People Great Company Great People - 195 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 195 8. BGA PIN MAP U301 (137 FBGA) Great Company Great People Great Company Great People - 196 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 196 8. BGA PIN MAP U400 (137 CSP) Great Company Great People Great Company Great People - 197 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 197 8. BGA PIN MAP U402 (20WLP) Challeng pany Great People pany Great People - 198 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 198 8. BGA PIN MAP IC500 (20 CSP) Chall Company Great People Company Great People - 199 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 200: Pcb Layout
CN401 Battery Conn. No LCD display. Can not power on Main-Sub B2B Connector Can not detect battery Battery CNT GD880-MAIN-TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 201 - LGE Internal Use Only Only for training and service purposes...
Page 201 RX Sensitivity Sensitivity & TX Power No Service No Service U1004 GSM PAM GSM Tx power No service GD880-MAIN-BOTTOM LGE Internal Use Only - 202 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 202 No LCD display. SW300 Camera Key Can not operate camera. MIC401 MIC. Can not record or send user voice. GD880-SUB-FPCB-TOP Copyright © 2010 LG Electronics. Inc. All right reserved. - 203 - LGE Internal Use Only Only for training and service purposes...
Page 203 Can not use a micro-SD U100 RGB 24bit Converter. No LCD Display. U302 Motor Driver IC. Can not operate vibrator. GD880-SUB-FPCB-BOT LGE Internal Use Only - 204 - Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 204: Rf Calibration
W900 : 23dBmn W2100 : 22.5dBm GSM850/900 : 32.5dBm GSM1800 : 29.5dBm GSM1900 : 29dBm - 1 - 10-GD880 - 205 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 205: Introduction
10.3.1 Menu / Toolbar / Run Button Tachyon has “Menu”, “Toolbar” and Buttons. <Picture 6> - 206 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes - 2 - 10-GD880...
Page 206 (like QPST, available on Qaulcomm) RF Switch Check… Check the RF Switch Box. Show Result… Result screen pop-up/pop-down - 207 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 207 Calibration Only Phone Control Loss Adjustment System Option 10. Run Option 11. Voltage / Current Setting 12. Show Result - 208 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 208 Area 1, the output is imformation about the COM port. Area 2, Show the RF-LOSS for the selected model. - 209 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 209 Time Elapse : test time Voltage : voltage Current Limit : current limit Consumption Current(mA) : doesn’t work - 210 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 210 If you have a multi-system, you must select the Channel(1,2) that you wanted, then you can test. <Picture 15 : Channel selection> - 211 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 211 If you have a multi-system, you must select the Channel(1,2) that you wanted, then you can test. <Picture 16 : Calibration Only> - 212 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 212 This perform Stopping the process. Description. Excution 1. <Menu> Run-> STOP 2. <Toolbar> Click. Hot Key Button button Click. - 21 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 213 Description. Excution 1. <Menu> Run-> STOP 2. <Toolbar> Click. Hot Key Button button Click. - 9 - 10-GD880 - 214 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 214: Exploded View & Replacement Part List
SWCC00 SUSY00 MBJZ02 MPBZ05 SURY00 SVCY00 MPBZ01 SJMY00 MTAB01 MLAA00 MTAZ00 MTAZ01 MBJZ03 SACY00 MTAB05 ACGK00 MBJZ01 MTAB02 Copyright © 2010 LG Electronics. Inc. All right reserved. - 215 - LGE Internal Use Only Only for training and service purposes...
Page 218: Replacement Parts
MFEZ0023201 PRESS, STS, , , , , COLOR MDAY00 DECO MDAY0046301 PRESS, STS, , , , , SILVER - 219 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 219 PRESS, STS, , , , , COLOR WITHOUT MTAA00 TAPE,DECO MTAA0214801 COMPLEX, (empty), , , , , COLOR - 220 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 220 MOLD, Silicone Rubber KE971-U, , , , , BLACK G, 8 MCCZ04 MCCZ0036801 MOLD, Silicone Rubber KE971-U, , , , , BLACK F, 7 - 221 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 221 COMPLEX, (empty), , , , , COLOR WITHOUT MLAB LABEL,A/S MLAB0004801 PRINTING, (empty), , , , , COLOR - 222 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 222 PRESS, BeCu, , , , , COLOR WITHOUT MLAA00 LABEL,APPROVAL MLAA0062304 COMPLEX, (empty), , , , , COLOR - 22 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 223: Main Component
ECCH0000185 5.6 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP C119 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP - 224 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 224 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C307 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP - 225 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 225 SMD ,SMD, 18V, 4ch, EMI_ESD Filter (100 Ohm, 7.5pF) FL200 FILTER,EMI/POWER SFEY0013701 SMD ,18 V,4ch. EMI_ESD Filter (100 Ohm, 7.5pF) - 226 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 226 22 Kohm,1/16W ,J ,1005 ,R/TP R304 RES,CHIP,MAKER ERHZ0000445 220 Kohm,1/16W ,J ,1005 ,R/TP R305 RES,CHIP,MAKER ERHZ0000456 2.2 ohm,1/16W ,J ,1005 ,R/TP - 227 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 227 WSOF6 ,5 ,R/TP ,1.6*1.6 ,; ,IC,PMIC FR-4 ,0.4 mm,STAGGERED-6 ,WHITE-MINI ,; , , , , , , , , SPCY PCB,FLEXIBLE SPCY0203601 - 228 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 228 100 pF,50V ,J ,X7R ,TC ,0603 ,R/TP , , ,[empty] ,[empty] C215 CAP,CERAMIC,CHIP ECCH0009103 ,C0G ,[empty] ,[empty] ,[empty] ,0.3 mm - 229 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 229 1 nF,16V ,K ,X7R ,HD ,0603 ,R/TP , , ,[empty] ,[empty] C322 CAP,CHIP,MAKER ECZH0025920 ,[empty] ,[empty] ,[empty] ,[empty] - 20 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 230 ECCH0009101 0.1 uF,6.3V ,K ,X5R ,TC ,0603 ,R/TP C405 CAP,CERAMIC,CHIP ECCH0006201 4.7 uF,6.3V ,K ,X5R ,TC ,1608 ,R/TP - 21 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 231 ECCH0009101 0.1 uF,6.3V ,K ,X5R ,TC ,0603 ,R/TP C434 CAP,CERAMIC,CHIP ECCH0009101 0.1 uF,6.3V ,K ,X5R ,TC ,0603 ,R/TP - 22 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 232 10000000 pF,6.3V ,M ,X5R ,TC ,1608 ,R/TP , , ,[empty] C614 CAP,CERAMIC,CHIP ECCH0005604 ,[empty] ,[empty] ,[empty] ,[empty] ,[empty] ,0.8 mm - 2 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 233 ,; ,; ,SHIELD ,2.5X2X1MM ,[empty] ,R/TP ,Inductor,Wire Wound,Chip L500 INDUCTOR,CHIP ELCH0001430 100 nH,J ,1005 ,R/TP ,PBFREE L600 INDUCTOR,SMD,POWER ELCP0008001 4.7 uH,M ,2.5*2.0*1.0 ,R/TP , - 24 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 234 470 Kohm,1/16W ,F ,1005 ,R/TP R436 RES,CHIP ERHY0009504 1 Kohm,1/20W(0.05W) ,J ,0603 ,R/TP R437 RES,CHIP ERHY0009527 47 Kohm,1/20W(0.05W) ,J ,0603 ,R/TP - 25 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 235 ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C1012 CAP,CERAMIC,CHIP ECCH0000175 2.7 pF,50V ,B ,NP0 ,TC ,1005 ,R/TP C1014 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP - 26 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 236 10 nF,16V ,K ,X7R ,TC ,0603 ,R/TP C1053 CAP,CERAMIC,CHIP ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C1055 CAP,CERAMIC,CHIP ECCH0000195 3.9 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP - 27 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 237 ECCH0009101 0.1 uF,6.3V ,K ,X5R ,TC ,0603 ,R/TP C1093 CAP,CHIP,MAKER ECZH0000839 4.7 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP - 28 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 238 4.7 uF,6.3V ,M ,X5R ,HD ,1005 ,R/TP ,; , ,20% ,6.3V C503 CAP,CERAMIC,CHIP ECCH0017601 ,X5R ,-55TO+85C ,1005 ,R/TP , mm - 29 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 239 ,SMD ,SAW, Band8, Rx balance type ,; FL1002 DUPLEXER,IMT SDMY0002801 ,942.5 ,925 to 960 ,897.5 ,880 to 915 ,3.8 ,2.9 ,2.5x2.0x0.94 ,DUAL ,SMD ,R/TP - 240 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 240 3.9 nH,S ,1005 ,R/TP , L1018 INDUCTOR,CHIP ELCH0004726 1.5 nH,J ,1005 ,R/TP , L1019 INDUCTOR,CHIP ELCH0004714 18 nH,J ,1005 ,R/TP , - 241 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 241 1 Kohm,1/20W(0.05W) ,J ,0603 ,R/TP R1023 RES,CHIP ERHY0009504 1 Kohm,1/20W(0.05W) ,J ,0603 ,R/TP R1024 RES,CHIP ERHY0009504 1 Kohm,1/20W(0.05W) ,J ,0603 ,R/TP - 242 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 242 TDFN ,8 ,R/TP ,Programmable OVP ,; ,IC,Charger PLP1010-4 ,4 PIN,R/TP ,1.8V 150mA Single LDO ,; U500 EUSY0355501 ,IC,LDO Voltage Regulator - 24 - Copyright © 2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 243: Accessory
100-240V ,5060 Hz,5.1 V,0.7 A,CE ,STA-U12ES, ADAPTOR,AC-DC SSAD0031003 Europe, Cableless ,; , ,5.1 ,0.7 , , ,WALL 2P ,USB , - 244 - LGE Internal Use Only Copyright © 2010 LG Electronics. Inc. All right reserved. Only for training and service purposes...

LG GD88O Service Manual

Introduction

Performance

Technical Brief

Trouble Shooting

Download

Block Diagram

Circuit Diagram

Bga Pin Map

Pcb Layout

Rf Calibration

Exploded View & Replacement Part List

Quick Links

Troubleshooting

Related Manuals for LG GD88O

Summary of Contents for LG GD88O

Table of Contents