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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
1. 3 Specifications ............................................................................................5
2. PERFORMANCE .................................................................... 10
2.1 Product Name ......................................................................................... 10
2.2 Supporting Standard ........................................................................... 10
2.3 Main Parts : Main Chipset Solution ................................................ 12
2.4 HW Features ............................................................................................ 12
2.5 SW Features ............................................................................................. 15
3. TROUBLE SHOOTING .......................................................... 29
3.1 Checking XO Block ................................................................................ 29
3.2 Checking Transceiver DC Power Supply Circuit Block ............ 31
3.3 Checking DC-DC Block ........................................................................ 33
3.4 Checking FEMiD Block (GSM, W B1/2/5/8, LTE B1/2/3/7/8/20)
.............................................................................................................................. 35
3.5 GSM RF Part ............................................................................................. 37
3.6 WCDMA RF Part ...................................................................................... 49
3.7 LTE RF Part ................................................................................................ 65
3.8 BT&WIFI PART .......................................................................................... 92
3.9 GPS Part ..................................................................................................... 96
3.10 Power .....................................................................................................102
3.11 Charger .................................................................................................106
3.12 Audio .....................................................................................................109
3.13 LCD .........................................................................................................122
3.14 Touch .....................................................................................................124
3.15 Sensor ....................................................................................................126
3.16 USB .........................................................................................................130
3.17 Camera ..................................................................................................132
4. DOWNLOAD .......................................................................135
5. BLOCK DIAGRAM ...............................................................152
6. CIRCUIT DIAGRAM ............................................................160
7. BGA PIN MAP ....................................................................181
8. PCB LAYOUT .......................................................................186
9. CALIBRATION .....................................................................190
10. HIDDEN MENU .................................................................209
11. DISASSEMBLE GUIDE ......................................................217
12. EXPLODED VIEW & REPLACEMENT PART LIST .............221