Table Of Contents - LG -E405 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 ............................................................................................. 10
2.6 HW SPEC. ................................................................................................. 13
3. CIC AND SERVICE CENTER .................................................. 20
3.1 CIC FAQ ...................................................................................................... 20
4. TROUBLE SHOOTING .......................................................... 26
4.1 RF Component ....................................................................................... 26
4.2 SIGNAL PATH ........................................................................................... 28
4.3 Checking TCXO Block ........................................................................... 31
4.4 Checking GSM TX Module(GSM PAM + ASM) Block ............... 33
4.5 Checking WCDMA Block .................................................................... 36
4.6 Checking GSM Block ............................................................................ 47
4.7 GPS/WIFI/BT RF Component ............................................................ 55
4.8 GPS/WIFI/BT SIGNAL PATH ................................................................ 57
4.9 GPS/WIFI/BT Trouble shooting ........................................................ 58
4.10 Power ON Trouble Shooting........................................................... 64
4.11 Charging Trouble Shooting ............................................................ 67
4.12 3MFF Camera Trouble Shooting ................................................... 69
4.13 Main LCD trouble ................................................................................ 72
4.14 Proximity Sensor on/off Trouble Shooting ............................... 74
4.15 Motion Sensor on/off Trouble Shooting ................................... 76
4.16 Compass Sensor on/off Trouble Shooting ............................... 78
4.17 DC Motor Trouble Shooting ........................................................... 80
4.18 SIM detect Trouble Shooting ......................................................... 82
4.19 Audio Troble .......................................................................................... 85
LGE Internal Use Only

Table Of Contents

5. DOWNLOAD ......................................................................... 95
6.Block diagram ....................................................................115
7. CIRCUIT DIAGRAM ............................................................120
8. BGA PIN MAP .....................................................................129
9. PCB LAYOUT .......................................................................135
10. CALIBRATION ...................................................................137
11. HIDDEN MENU .................................................................157
12. DISASSEMBLE GUIDE .................................................163
13. EXPLODED VIEW & REPLACEMENT PART LIST .............168
13.1 EXPLODED VIEW ................................................................................168
13.2 Replacement Parts ...........................................................................169
13.3 Accessory .............................................................................................192
- 2 - Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes