- 2 - Copyright © 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Table Of Contents
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................................................................................................9
2.6 HW SPEC. ................................................................................................. 12
3. TROUBLE SHOOTING .......................................................... 21
3.1 RF Component ....................................................................................... 21
3.2 SIGNAL PATH........................................................................................... 23
3.3 Checking XO Block................................................................................ 26
3.4 Checking FEMID (GSM, W B1/B2/B8) Block................................. 28
3.5 Checking WCDMA Block .................................................................... 31
3.6 Checking GSM Block............................................................................ 58
3.7 GPS/WIFI/BT............................................................................................. 65
3.8 GPS/WIFI/BT SIGNAL PATH ................................................................ 67
3.9 Checking GPS/WIFI/BT........................................................................ 69
3.10 Audio Trouble....................................................................................... 75
3.11 Main CameraTrouble Shooting.................................................... 85
3.12 Main LCD Trouble Shooting ........................................................... 88
3.13 Touch troubleshooting..................................................................... 90
3.14 Compass sensor troubleshooting................................................ 93
3.15 Proximity Sensor troubleshooting............................................... 95
3.16 Power ON Troubleshooting............................................................ 97
3.17 Charging Troubleshooting............................................................100
3.18 USBTrouble shooting.....................................................................103
4. DOWNLOAD.......................................................................108
5. BLOCK DIAGRAM...............................................................125
6. CIRCUIT DIAGRAM ............................................................135
7. BGA PIN MAP ....................................................................151
8. PCB LAYOUT.......................................................................158
9. CALIBRATION.....................................................................162
10. HIDDEN MENU.................................................................181
11. DISASSEMBLE GUIDE......................................................188
12. EXPLODED VIEW & REPLACEMENT PART LIST .............193
12.1 Exploded View ...................................................................................193
12.2 Replacement Parts ...........................................................................194
12.3 Accessory .............................................................................................225
