- 2 -
Copyright © 2013 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 Abbreviations.............................................................................................5
2. PERFORMANCE ...................................................................... 7
2.1 H/W Features ..............................................................................................7
2.2 Technical Specification ...........................................................................9
3. TECHNICAL BRIEF ................................................................ 14
3.1 Digital Main Processor ......................................................................... 14
3.2 Power Management ............................................................................ 23
3.3 FEM with integrated Power Amplifier Module (RF7182) ...... 27
3.4 Clocks ......................................................................................................... 29
3.5 RFSYS of MT6253 (U101) .................................................................... 31
3.6 MEMORY(H9DA1GH25HBMMMR, U100 ) ................................... 33
3.7 SIM Card Interface ................................................................................. 37
3.8 Micro-SD Card Interface ..................................................................... 41
3.9 LCD Interface ........................................................................................... 42
3.10 Battery Charger Interface ................................................................ 44
3.11 Keypad Interface ................................................................................. 45
3.12 Audio Front-End .................................................................................. 47
3.13 Camera Interface ................................................................................. 49
3.14 KEY BACLKLIGHT LED Interfac ....................................................... 51
3.15 Vibrator Interface ................................................................................ 52
4. TROUBLE SHOOTING .......................................................... 53
4.1 RF Component ....................................................................................... 53
4.2 RX Trouble ................................................................................................ 54
4.3 TX Trouble ................................................................................................. 58
4.4 Power On Trouble .................................................................................. 62
4.5 Charging Trouble ................................................................................... 64
4.6 Vibrator Trouble ..................................................................................... 67
4.7 LCD Trouble ............................................................................................. 69
4.8 Camera Trouble ...................................................................................... 73
4.9 Speaker Trouble ..................................................................................... 76
4.10 Earphone Trouble ............................................................................... 78
4.11 Receiver Trouble .................................................................................. 81
4.12 Microphone Trouble .......................................................................... 83
4.13 SIM Card Interface Trouble .............................................................. 85
4.14 KEY backlight Trouble ....................................................................... 97
4.15 Micro SD Trouble ................................................................................. 99
4.16 Bluetooth Trouble .............................................................................102
4.17 FM Radio Trouble ..............................................................................106
5. DOWNLOAD .......................................................................109
6. BLOCK DIAGRAM ...............................................................129
7. CIRCUIT DIAGRAM ............................................................135
8. BGA PIN MAP ....................................................................139
9. PCB LAYOUT .......................................................................141
10. ENGINEERING MODE ......................................................143
11. CALIBRATION ...................................................................145
12. HIDDEN MENU .................................................................165
13. EXPLODED VIEW & REPLACEMENT PART LIST .............170
13.1 EXPLODED VIEW ................................................................................170
13.2 Replacement Parts ...........................................................................171
13.3 Accessory .............................................................................................185
