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LGE Internal Use Only Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Table Of Contents
1. INTRODUCTION...................................................................3
1.1 Purpose .....................................................................................................3
1.2 Regulatory Information ......................................................................3
1.3 Abbreviations..........................................................................................5
2. PERFORMANCE....................................................................7
2.1 H/W Features...........................................................................................7
2.2 Technical Specification........................................................................9
3. TECHNICAL BRIEF..............................................................14
3.1 Digital Main Processor...................................................................... 14
3.2 Power Management ......................................................................... 19
3.3 FEM with integrated Power Amplifier Module
(RF7171, U101) ..................................................................................... 32
3.4 Crystal(26 MHz, X201) ...................................................................... 34
3.5 RF Subsystem of PMB8815 (U201) .............................................. 35
3.6 MEMORY(H9DA2GH1GHMMMR, U301) ................................... 40
3.7 BT module............................................................................................. 43
3.8 SIM Card Interface.............................................................................. 45
3.9 LCD Interface........................................................................................ 46
3.10 MiniABB (Battery Charger & MUIC) Interface....................... 49
3.11 Keypad Interface............................................................................. 50
3.12 Audio Interface................................................................................. 52
3.13 Camera Interface(2M Fixed Focus Camera) .......................... 58
3.14 Touch Interface................................................................................. 61
4. TROUBLE SHOOTING ........................................................63
4.1 RF Component .................................................................................... 63
4.2 RX Trouble ............................................................................................. 64
4.3 TX Trouble.............................................................................................. 68
4.4 Power On Trouble............................................................................... 72
4.5 Charging Trouble................................................................................ 75
4.6 Vibrator Trouble .................................................................................. 77
4.7 LCD Trouble .......................................................................................... 80
4.8 Camera Trouble................................................................................... 84
4.9 Speaker / Receiver Trouble............................................................. 88
4.10 Earphone Trouble ............................................................................ 91
4.11 Microphone Trouble....................................................................... 94
4.12 SIM Card Interface Trouble........................................................... 97
4.13 Micro SD (uSD) Trouble ...............................................................100
4.14 Bluetooth Trouble..........................................................................102
4.15 FM Radio Trouble...........................................................................104
4.16 Touch trouble ..................................................................................107
5. DOWNLOAD.....................................................................110
6. BLOCK DIAGRAM.............................................................123
7. CIRCUIT DIAGRAM ..........................................................124
8. BGA PIN MAP ..................................................................132
9. PCB LAYOUT.....................................................................134
10. ENGINEERING MODE ....................................................140
11. STAND ALONE TEST ......................................................141
11.1 Introduction.....................................................................................141
11.2 Setting Method ..............................................................................141
11.3 Tx Test .................................................................................................144
11.4 Rx Test.................................................................................................145
12.AUTO CALIBRATION.......................................................146
12.1 Overview...........................................................................................146
12.2 Tachyon Directory..........................................................................146
12.3 Test Equipment Setup..................................................................147
12.4 Procedure..........................................................................................147
12.5 AGC......................................................................................................154
12.6 APC ......................................................................................................154
12.7 ADC......................................................................................................154
12.8 Target Power....................................................................................154
13. EXPLODED VIEW & REPLACEMENT PART LIST ...........155
13.1 EXPLODED VIEW.............................................................................155
13.2 Replacement Parts ........................................................................156
13.3 Accessory ..........................................................................................171
