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Copyright © 2009 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. SYSTEM SPECIFICATION................................. 9
2.1 H/W Features..............................................................9
2.2 Technical Specification...............................................11
3. TECHNICAL BRIEF......................................... 16
3.1 Digital Main Processor...............................................16
3.2 Power Management ..................................................21
3.3 FEM with integrated Power Amplifier Module
(SKY77531, U400) .................................................... 35
3.4 Crystal(26 MHz, X100)...............................................37
3.5 RF Subsystem of PMB8810 (U102) ............................38
3.6 MEMORY(PF38F5060M0Y0BE, U202 ) .......................43
3.7 BT module ................................................................45
3.8 SIM Card Interface.....................................................47
3.9 LCD Interface ............................................................48
3.10 Battery Charger Interface .........................................51
3.11 Keypad Interface .....................................................52
3.12 Audio Front-End ......................................................54
3.13 Camera Interface(1.3M Fixed Focus Camera) ............60
3.14 KEY BACLKLIGHT LED Interface................................62
3.15 Vibrator Interface.....................................................63
3.16 Flip 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 ..............................................................81
4.8 Camera Trouble.........................................................86
4.9 Speaker Trouble ........................................................89
4.10 Earphone Trouble.....................................................91
4.11 Receiver Trouble......................................................93
4.12 Microphone Trouble .................................................95
4.13 SIM Card Interface Trouble .......................................97
4.14 KEY backlight Trouble ..............................................99
4.15 Micro SD Trouble...................................................101
4.16 Bluetooth Trouble...................................................103
4.17 FM Radio Trouble...................................................105
4.18 folder on/off Trouble...............................................107
5. DOWNLOAD................................................. 109
5.1 S/W Download ........................................................109
5.2 Download program user guide..................................110
5.3 Multi-Download Program Setting (Model-Base)..........111
6. Block Diagram ........................................... 113
7. CIRCUIT DIAGRAM...................................... 115
8. BGA Pin Map ..............................................123
9. PCB LAYOUT ...............................................127
10. ENGINEERING MODE................................. 133
11. STAND ALONE TEST.................................. 135
11.1 Introduction...........................................................135
11.2 Setting Method......................................................135
11.3 Tx Test ..................................................................137
11.4 Rx Test..................................................................138
12. AUTO CALIBRATION..................................140
12.1 Overview...............................................................140
12.2 Configuration of HotKimchi.....................................140
12.3 Description of Basic File.........................................141
12.4 Procedure.............................................................142
12.5 AGC......................................................................145
12.6 APC......................................................................145
12.7 ADC......................................................................145
12.8 Target Power.........................................................145
13. EXPLODED VIEW & REPLACEMENT
PART LIST ................................................147
13.1 EXPLODED VIEW ...................................................147
13.2 Replacement Parts ................................................149
13.3 Accessory .............................................................164
