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Copyright © 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Table Of Contents
1. INTRODUCTION................................................. 5
1.1 Purpose............................................................................................... 5
1.2 Regulatory Information ............................................................... 5
1.3 Abbreviations................................................................................... 7
2. PERFORMANCE..................................................9
2.1 H/W Features.................................................................................... 9
2.2 Technical Specification...............................................................11
3. TECHNICAL BRIEF............................................16
3.1 Baseband Processor Introduction .........................................16
3.2 Power Management....................................................................21
3.3 FEM with integrated Power Amplifier Module
(SKY77531, U400) ................................................................................34
3.4 Crystal(26 MHz, X100).................................................................36
3.5 RF Subsystem of PMB8810 (U100).........................................37
3.6 MEMORY(PF38F5060M0Y0BE, U101)...................................42
3.7 BT module .......................................................................................44
3.8 SIM Card Interface........................................................................46
3.9 LCD Interface..................................................................................47
3.10 Battery Charger Interface .......................................................50
3.11 Keypad Interface........................................................................51
3.12 Audio Front-End.........................................................................53
3.13 Camera Interface(2M Fixed Focus Camera).....................59
3.14 KEY BACLKLIGHT LED Interface............................................61
3.15 Vibrator Interface .......................................................................62
3.16 Folder SW Interface...................................................................63
3.17 Sub Display (LED Module) SW Interface...........................64
4. TROUBLE SHOOTING ......................................65
4.1 RF Component...............................................................................65
4.2 RX Trouble .......................................................................................66
4.3 TX Trouble........................................................................................70
4.4 Power On Trouble.........................................................................74
4.5 Charging Trouble..........................................................................77
4.6 Vibrator Trouble.............................................................................79
4.7 LCD Trouble.....................................................................................82
4.8 Camera Trouble.............................................................................86
4.9 Speaker Trouble ............................................................................90
4.10 Earphone Trouble ......................................................................92
4.11 Receiver Trouble.........................................................................95
4.12 Microphone Trouble.................................................................97
4.13 SIM Card Interface Trouble.....................................................99
4.14 KEY backlight Trouble........................................................... 101
4.15 Micro SD (uSD) Trouble......................................................... 103
4.16 Bluetooth Trouble................................................................... 105
4.17 FM Radio Trouble.................................................................... 107
4.18 Folder on/off Trouble.............................................................110
4.19 LED Module Trouble .............................................................. 112
5. DOWNLOAD...................................................114
5.1 S/W Download............................................................................ 114
5.2 Download program user guide........................................... 115
5.3 FlashTool Program Setting..................................................... 116
6. BLOCK DIAGRAM...........................................118
7. CIRCUIT DIAGRAM ........................................119
8. BGA PIN MAP .................................................123
9. PCB LAYOUT...................................................125
10.ENGINEERING MODE...................................131
11. AUTO CALIBRATION....................................132
11.1 Overview .................................................................................... 132
11.2 Configuration of HotKimchi ............................................... 132
11.3 Description of Basic File .......................................................133
11.4 Procedure................................................................................... 134
11.5 AGC............................................................................................... 137
11.6 APC ............................................................................................... 137
11.7 ADC............................................................................................... 137
11.8 Target Power ............................................................................. 137
12. EXPLODED VIEW & REPLACEMENT
PART LIST ....................................................139
12.1 EXPLODED VIEW...................................................................... 139
12.2 Replacement Parts.................................................................. 141
12.3 Accessory ................................................................................... 158
