Table Of Contents - LG -V909DW Service Manual

1. INTRODUCTION ..................................................................... 3
1.1 Purpose ........................................................................................................3
1.2 Regulatory Information .........................................................................3
1.3 Abbreviations.............................................................................................5
2. PERFORMANCE ...................................................................... 7
2.1 Product Name ............................................................................................7
2.2 Supporting Standard ..............................................................................7
2.3 Main Parts : GSM Solution .....................................................................7
2.4 HW Features ...............................................................................................8
2.5 SW Features ............................................................................................. 11
2.6 HW SPEC. ................................................................................................. 14
2.7 V909DW Figures ..................................................................................... 23
3. TECHNICAL BRIEF ................................................................ 24
3.1 GENERAL DESCRIPTION ...................................................................... 24
3.2 GSM MODE .............................................................................................. 27
3.3 UMTS MODE ........................................................................................... 29
3.4 GPS RECEIVER.......................................................................................... 32
3.5 LO GENERATION and DISTRIBUTION CIRCUIT............................ 33
3.6 OFF-CHIP RF COMPONENTS ............................................................. 35
3.7 Hardware Architecture ........................................................................ 36
3.8 Subsystem(MDM6200) ....................................................................... 37
3.9 Power Block ............................................................................................. 40
3.10 External memory interface ............................................................. 42
3.11. Audio and sound ............................................................................... 43
3.12 Main (5M pixels dual) & Front (2M pixels) Camera ................ 48
3.13 Display ..................................................................................................... 50
3.14 HDMI ........................................................................................................ 51
3.15 Compass Sensor .................................................................................. 52
3.16 Motion Sensor ...................................................................................... 53
3.17 Gyro Sensor ........................................................................................... 55
3.18 Illumination Sensor ............................................................................ 56
3.19 Touch Module ...................................................................................... 57
3.20 Main Features ....................................................................................... 58
4. TROUBLE SHOOTING .......................................................... 59
4.1 MODEM PICTURE .................................................................................. 59
4.2 Signal Path ............................................................................................... 61
4.3 Power On Trouble shooting .............................................................. 63
4.4 WCDMA Transmit block ...................................................................... 71
4.5 GSM Receiver Block .............................................................................. 76
4.6 WCDMA Receiver Block ...................................................................... 79
LGE Internal Use Only

Table Of Contents

4.7 WIFI/BT RF components ..................................................................... 82
4.8 WIFI/BT RF components ..................................................................... 83
4.9 Power ON Troubleshooting ............................................................... 84
4.10 Charger troubleshooting ................................................................. 85
4.11 USB Trouble shooting ....................................................................... 86
4.12 Audio troubleshooting ..................................................................... 89
4.13 Camera Troubleshooting ................................................................. 97
4.14 Main LCD trouble ..............................................................................102
4.15 GPS Troubleshooting ......................................................................104
4.16 Key troubleshooting ........................................................................107
4.17 HDMI trouble ......................................................................................108
4.18 Motion sensor troubleshooting ..................................................109
4.19 Gyro/Compass sensor troubleshooting ..................................111
4.20 Illumination Sensor on/off trouble ............................................114
4.21 Touch trouble .....................................................................................116
5. DOWNLOAD ....................................................................... 118
6. BLOCK DIAGRAM ............................................................... 137
7. CIRCUIT DIAGRAM ............................................................ 151
8. BGA Pin Map ...................................................................... 175
9. PCB LAYOUT ....................................................................... 183
10. Calibration & RF Auto Test Program (Tachyon) ............ 205
11. Hidden Menu ................................................................... 210
12. EXPLODED VIEW & REPLACEMENT PART LIST ............. 226
12.1 EXPLODED VIEW ................................................................................226
12.2 Replacement Parts ...........................................................................227
12.3 Accessory .............................................................................................271
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