- 3 -
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 Specifi cation ...............................................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 Amplifi er 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