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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 Abbreviation................................................................7
2. performance................................................... 9
2.1 System Overview.........................................................9
2.2. Usable environment ..................................................10
2.3 Radio Performance....................................................11
2.4 Current Consumption.................................................19
2.5 RSSI .........................................................................19
2.6 Battery Bar................................................................19
2.7 Sound Pressure Level ................................................20
2.8 Charging...................................................................21
3. Technical brief .............................................22
3.1 Digital Baseband(DBB) & Multimedia Processor...........22
3.2 GAM Hardware Subsystem.........................................44
3.3. Audio Part ................................................................53
3.4 GPADC(General Purpose ADC) and AUTOADC2............61
3.5 Charger control .........................................................62
3.6. Voltage Regulation ....................................................68
3. 7 RF Technical Description ...........................................69
4. Trouble Shooting.......................................... 79
4.1 Power ON Trouble......................................................79
4.2 USB Trouble ..............................................................80
4.3 SIM Detect Trouble ....................................................81
4.4 MicroSD card Trouble ................................................82
4.5 Key and Touch Screen Trouble....................................83
4.6 Camera Trouble.........................................................85
4.7 Main LCD Trouble......................................................92
4.8 Keypad Backlight Trouble ...........................................96
4.9 Audio Trouble Shooting ..............................................99
4.10 Charger Trouble Shooting.......................................113
4.11 Bluetooth Trouble...................................................116
4.12 RF Component ......................................................119
4.13 Procedure to check ...............................................120
4.14 Checking Common Power Source Block..................121
4.15 Checking VCXO Block ............................................128
4.16 Checking Front End Module Block ..........................132
4.17 Checking Front End Module Block input logic ..........133
4.18 Checking WCDMA Block ........................................142
4.19 Checking GSM Block .............................................155
5. Download ................................................... 167
5.1 Requirements..........................................................167
5.2. GD580 Download ...................................................168
5.3 Trouble Shooting......................................................175
6. Block diagram............................................ 170
7. Circuit Diagram.......................................... 181
8. BGA Pin Map ..............................................191
9. PCB Layout................................................. 197
10. Calibration................................................205
10.1 General Description ...............................................205
10.2 XCALMON Environment .........................................205
10.3 Calibration Environment .........................................206
10.4 Program Operation ................................................207
11. Exploded view & Replacement part list . 213
11.1 Exploded view .......................................................213
11.2 Replacement Parts ................................................215
12.3 Accessory .............................................................237
