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Copyright © 2008 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
2. PERFORMANCE............................................... 7
2.1 System Overview.........................................................7
2.2 Usable environment.....................................................8
2.3 Radio Performance......................................................8
2.4 Current Consumption.................................................16
2.5 RSSI .........................................................................16
2.6 Battery Bar................................................................16
2.7 Sound Pressure Level ................................................17
2.8 Charging...................................................................18
3. TECHNICAL BRIEF......................................... 19
3.1 Digital Baseband (DBB) & Multimedia Processor .........19
3.2 Baseband Processor (BBP) Introduction ......................20
3.3 Audio Part.................................................................47
3.4 GPADC (General Purpose ADC) and AUTOADC2...........54
3.5 Charger control .........................................................55
3.6 Voltage Regulation.....................................................61
3.7 RF Technical Description............................................62
4. TROUBLE SHOOTING..................................... 73
4.1 Power ON Trouble......................................................73
4.2 USB Trouble ..............................................................74
4.3 SIM Detect Trouble ....................................................75
4.4 MicroSD card Trouble ................................................76
4.5 Keypad And Optical Joystick key Trouble.....................77
4.6 Camera Trouble.........................................................78
4.7 Main LCD Trouble......................................................79
4.8 Main & Key LED Trouble.............................................81
4.9 Slider ON/OFF Trouble................................................83
4.10 Audio Trouble Shooting ............................................85
4.11 Charger Trouble Shooting.........................................99
4.12 Checking Bluetooth Block ......................................102
4.13 RF Component ......................................................104
4.14 Procedure to check ...............................................105
4.15 Checking Common Power Source Block..................106
4.16 Checking VCXO Block ............................................112
4.17 Checking Front End Module Block ..........................116
4.18 Checking Front End Module Block input logic ..........118
4.19 Checking WCDMA Block ........................................129
4.20 Checking GSM Block .............................................142
4.21 Checking A-GPS Block...........................................154
5. DOWNLOAD.................................................157
5.1 LGDP2....................................................................157
5.2 Download................................................................159
6. BLOCK DIAGRAM........................................ 161
7. CIRCUIT DIAGRAM...................................... 163
8. BGA Pin Map ..............................................171
9. PCB LAYOUT ...............................................177
10. CALIBRATION............................................ 183
10.1 General Description ...............................................183
10.2 Environment..........................................................183
10.3 Calibration Environment .........................................184
10.4 Calibration Procedure ............................................184
10.5 Program Operation ................................................185
11. EXPLODED VIEW & REPLACEMENT
PART LIST ................................................. 189
11.1 EXPLODED VIEW ...................................................189
11.2 Replacement Parts ................................................191
11.3 Accessory .............................................................213
