Table Of Contents - LG E475F Service Manual

1. INTRODUCTION ..................................................................... 3
1.1 Purpose ........................................................................................................3
1.2 Regulatory Information .........................................................................3
2. PERFORMANCE ...................................................................... 5
2.1 Product Name ............................................................................................5
2.2 Supporting Standard ..............................................................................5
2.3 Main Parts : GSM Solution .....................................................................5
2.4 HW Features ...............................................................................................6
2.5 SW Features ............................................................................................. 11
2.6 HW SPEC. ................................................................................................. 15
3. TROUBLE SHOOTING .......................................................... 23
3.1 RF Component ....................................................................................... 23
3.2 SIGNAL PATH ........................................................................................... 24
3.3 Checking TCXO Block ........................................................................... 27
3.4 Checking GSM TX Module(GSM PAM + ASM) Block ............... 29
3.5 Checking WCDMA Block .................................................................... 32
3.6 Checking GSM Block ............................................................................ 42
3.7 GPS/WIFI/BT RF Component ............................................................ 49
3.8 GPS/WIFI/BT SIGNAL PATH ................................................................ 51
3.9 GPS/WIFI/BT Trouble shooting ........................................................ 53
3.10 Power ON Trouble Shooting........................................................... 59
3.11 Charging Trouble Shooting ............................................................ 62
3.12 2M FF Camera Trouble Shooting .................................................. 64
3.13 Main LCD trouble ................................................................................ 67
3.14 Proximity Sensor on/off Trouble Shooting ............................... 69
3.15 Motion Sensor on/off Trouble Shooting ................................... 71
3.16 DC Motor Trouble Shooting ........................................................... 73
3.17 SIM detect Trouble Shooting ......................................................... 75
3.18 Audio Troble .......................................................................................... 80
LGE Internal Use Only

Table Of Contents

4. DOWNLOAD ......................................................................... 96
5. BLOCK DIAGRAM ..............................................................113
6. CIRCUIT DIAGRAM ............................................................118
7. BGA PIN MAP .....................................................................127
8. PCB LAYOUT .......................................................................133
9. CALIBRATION .....................................................................135
10. HIDDEN MENU .................................................................154
11. DISASSEMBLE GUIDE .................................................160
12. EXPLODED VIEW & REPLACEMENT PART LIST .............168
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