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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. GENERAL PERFORMANCE ..............................9
2.1 H/W Features..............................................................9
2.2 Function (Software)....................................................10
2.3 Technical Specification...............................................11
3. TECHNICAL BRIEF......................................... 16
3.1 Baseband circuits technical brief ................................16
3.2 Analog Main Processor(AD6725-ATLAS3H LITE, U103) 20
3.3 AUDIO control............................................................33
3.4 MEMORY(PF38F5060M0Y0BF, U101 )........................41
3.5 Micro-SD & SIM Card Interface...................................44
3.6 CAMERA, LCD FUNCTION ..........................................45
3.7 Keypad Interface .......................................................51
3.8 KEY BACLKLIGHT LED Interface..................................53
3.9 Vibrator Interface.......................................................54
3.10 JTAG interface connector .........................................54
3.11 CLK ........................................................................55
3.12 18pin Multi Media Interface connector......................56
3.13 Front End Module control &
Power Amplifier Module (SKY77531, U502) ..............58
3.14 RF Tranceiver(AD6548, U501) ..................................60
3.15 BT Module with integrated FM tuner
(BCM2048SB0, U401).............................................67
3.16 FM Radio ................................................................69
4. TROUBLE SHOOTING..................................... 70
4.1 RF Component ..........................................................70
4.2 RX Trouble ................................................................71
4.3 TX Trouble.................................................................76
4.4 Power On Trouble ......................................................82
4.5 Charging Trouble .......................................................84
4.6 Vibrator Trouble .........................................................86
4.7 LCD Trouble ..............................................................88
4.8 Camera Trouble.........................................................91
4.9 Speaker Trouble ........................................................94
4.10 Receiver Trouble......................................................97
4.11 Headphone(3.5Ø Trouble).........................................99
4.12 Microphone Trouble ...............................................103
4.13 SIM Card Interface Trouble .....................................105
4.14 key backlight Trouble .............................................107
4.15 RTC Trouble ..........................................................109
4.16 Micro SD Trouble...................................................111
4.17 Bluetooth Trouble...................................................113
4.18 FM Radio Trouble...................................................115
5. Downloading .............................................. 117
5.1 Download................................................................117
6. BLOCK DIAGRAM........................................ 123
7. CIRCUIT DIAGRAM...................................... 125
8. BGA Pin Map ..............................................131
9. PCB LAYOUT ...............................................135
10. ENGINEERING MODE................................. 141
11. STAND ALONE TEST.................................. 148
11.1 Introduction...........................................................148
11.2 Setting Method......................................................148
11.3 Means of Test........................................................149
12. AUTO CALIBRATION.................................. 151
12.1 Overview...............................................................151
12.2 Equipment List ......................................................151
12.3 Test Jig Operation..................................................152
12.4 Procedure.............................................................153
12.5 AGC......................................................................156
12.6 APC......................................................................156
12.7 ADC......................................................................156
13. EXPLODED VIEW & REPLACEMENT
PART LIST ................................................157
13.1 EXPLODED VIEW ...................................................157
13.2 Replacement Parts ................................................159
