
Copyright ⓒ2014 LG Electronics. Inc. All right
reserved. Only 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..................................................... 4
2.1 Band Specification....................................................... 4
2.2 HW Features…………….................................................. 5
2.3 RSSI Display……………………………………….................... 7
2.4 Current consumption...................................................7
2.5 Battery bar........................................................................8
2.6 SW Specification............................................................ 9
3. TROUBLE SHOOTING..........................................11
3.1 WCDMA Rx Part…………………………….....................11
3.2 WCDMA Tx Part……………….…………………………...…18
3.3 GSM Rx Part.…………..……………………………………… 28
3.4 GSM Tx Part……………………………………………..…… 36
3.5 BT/WIFI Block……………………………………………….… 42
3.6 GPS Block………………………...………………….…….…... 43
3.7 FM RADIO….……………...…………………………………… 45
3.8 Power......……………...……………………………………….. 47
3.9 Charging……………...……………………………………… 48
3.10 USB…………………...………………………………………….50
3.11 Audio………...………...…………………………………….... 51
3.12 Sensor……………...…………………………………………... 56
3.13 Touch…………...………………………………………………. 58
3.14 Vibrator………....………………………………………….. 59
3.15 Camera…………...…………………………………….……… 60
3.16 LCD………………..…………...……………………………….. 62
4. BLOCK DIAGRAM…............................................ 64
5. CIRCUIT DIAGRAM............................................. 75
6. BGA PIN MAP...................................................... 95
7. PCB LAYOUT…................................................... 96
8. HIDDENMENU.................................................. 101
9. DOWNLOAD…................................................... 104
10. CALIBRATION.......................................................... 105
11. DISASSEMBLE GUIDE............................................. 106
12. EXPLODED VIEW..................................................... 108
13. REPLACEMENT PART LIST..................................... 109