LG LG-P350 - Default Chapter; Table of Contents

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Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
Table Of Contents
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 ............................................................................................. 10
2.6 HW SPEC. ................................................................................................. 13
3. TECHNICAL BRIEF ................................................................ 19
3.1 GENERAL DESCRIPTION ...................................................................... 19
3.2 GSM MODE .............................................................................................. 21
3.3 UMTS MODE ............................................................................................ 23
3.4 GPS RECEIVER.......................................................................................... 26
3.5 LO GENERATION and DISTRIBUTION CIRCUIT............................ 26
3.6 OFF-CHIP RF COMPONENTS ............................................................. 27
3.7 Digital Baseband(DBB/MSM7227) .................................................. 32
3.8 Hardware Architecture ........................................................................ 33
3.9 Subsystem (MSM7227) ....................................................................... 35
3.10 Power Block ........................................................................................... 38
3.11 External memory interface ............................................................. 43
3.12 H/W Sub System .................................................................................. 44
3.13 Audio and sound ................................................................................ 51
3.14 Display ..................................................................................................... 57
3.15 Vibrators (Q-Coin Motor) ................................................................. 59
3.16 Compass Sensor .................................................................................. 60
3.17 Motion Sensor ...................................................................................... 62
3.18 Main Features ....................................................................................... 63
3.19 Main component ................................................................................ 64
4. TROUBLE SHOOTING .......................................................... 71
4.1 RF Component ....................................................................................... 71
4.2 SIGNAL PATH ........................................................................................... 73
4.3 Checking TCXO Block ........................................................................... 76
4.4 Checking GSM TX Module(GSM PAM + FEM) Block ................ 78
4.5 Checking WCDMA Block .................................................................... 81
4.6 Checking GSM Block ............................................................................ 91
4.7 GPS/WIFI/BT RF Component ............................................................ 99
4.8 GPS/WIFI/BT SIGNAL PATH ..............................................................101
4.9 GPS/WIFI/BT Trouble shooting ......................................................103
4.10 Power ON Troubleshooting ..........................................................109
4.11 Charging Trouble shooting ...........................................................113
4.12 3M FF Camera trouble ....................................................................117
4.13 Audio Trouble .....................................................................................120
4.14 Main LCD trouble ..............................................................................132
4.15 Motion Sensor on/off trouble ......................................................134
4.16 Compass Sensor on/off trouble ..................................................136
4.17 Q coin Motor .......................................................................................138
5. DOWNLOAD ....................................................................... 140
6. BLOCK DIAGRAM ............................................................... 153
7. CIRCUIT DIAGRAM ............................................................158
8. BGA Pin Map ......................................................................166
9. PCB LAYOUT .......................................................................170
10. CALIBRATION ...................................................................172
10.1 General Description .........................................................................172
10.2 Requirement .......................................................................................172
10.3 Setup for RF calibration ..................................................................173
10.4 Tachyon Software Installation .....................................................173
10.5 Tachyon Start ......................................................................................174
10.6 Overview of RF Calibration ...........................................................179
11. STAND ALONE TEST ........................................................183
12. EXPLODED VIEW & REPLACEMENT PART LIST .............190
12.1 EXPLODED VIEW ................................................................................190
12.2 Replacement Parts ...........................................................................191
12.3 Accessory .............................................................................................215