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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 GAM Hardware Subsystem.........................................44
3.3 Audio Part.................................................................55
3.4 GPADC(General Purpose ADC) and AUTOADC2............62
3.5 Charger control .........................................................63
3.6 Voltage Regulation.....................................................69
3.7 RF Technical Description............................................70
4. TROUBLE SHOOTING..................................... 80
4.1 Power ON Trouble......................................................80
4.2 USB Trouble ..............................................................81
4.3 SIM Detect Trouble ....................................................82
4.4 MicroSD card Trouble ................................................83
4.5 Keypad , Touch Button and Touch Screen Trouble ........84
4.6 Multi EL lighting Trouble.............................................89
4.7 Camera Trouble.........................................................93
4.8 Main LCD Trouble ......................................................99
4.9 Keypad Backlight Trouble .........................................101
4.10 Folder ON/OFF Trouble...........................................103
4.11 Audio Trouble Shooting ..........................................105
4.12 Charger Trouble Shooting.......................................125
4.13 Checking PMIC Block.............................................127
4.14 RF Component ......................................................130
4.15 Procedure to check ...............................................131
4.16 Checking Common Power Source Block..................132
4.17 Checking VCXO Block ............................................137
4.18 Checking Front End Module Block ..........................141
4.19 Checking Front End Module Block input logic ..........142
4.20 Checking WCDMA Block ........................................145
4.21 Checking GSM Block .............................................154
4.22 Checking A-GPS Block...........................................167
5. Download ................................................... 170
5.1 LGDP2....................................................................170
5.2 Download................................................................172
6. BLOCK DIAGRAM........................................ 174
6.1 GSM & WCDMA RF Block.........................................174
6.2 Whole Block Diagram...............................................176
7. CIRCUIT DIAGRAM...................................... 177
8. BGA Pin Map ..............................................189
9. PCB LAYOUT ...............................................195
10. CALIBRATION............................................ 205
10.1 General Description ...............................................205
10.2 Environment..........................................................205
10.3 Calibration Environment .........................................206
10.4 Calibration Procedure ............................................206
10.5 Program Operation ................................................207
11. STAND-ALONE TEST ................................. 210
11.1 General Description ...............................................210
11.2 USB Communication Setting...................................211
11.3 Program Operation ................................................212
11.4 Stand-alone Test ...................................................215
12. EXPLODED VIEW & REPLACEMENT
PART LIST ................................................. 218
12.1 EXPLODED VIEW ...................................................218
12.2 Replacement Parts ................................................223
12.3 Accessory .............................................................252
