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LGE Internal Use Only
Copyright © 011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Table Of Contents
1. INTRODUCTION ...................................................................3
1.1 Purpose .....................................................................................................3
1. Regulatory Information ......................................................................3
1.3 Abbreviations..........................................................................................5
2. PERFORMANCE ....................................................................7
.1 H/W Features ...........................................................................................7
. Technical Specification ........................................................................9
3. TECHNICAL BRIEF ..............................................................14
3.1 Digital Main Processor ...................................................................... 14
3. Power Management ......................................................................... 19
3.3 FEM with integrated Power Amplifier Module
(RF7171, U101) ..................................................................................... 3
3.4 Crystal(6 MHz, X01) ...................................................................... 34
3.5 RF Subsystem of PMB8815 (U01) .............................................. 35
3.6 MEMORY(H9DAGH1GHMMMR, 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
3.1 Audio Interface ................................................................................. 5
3.13 Camera Interface(M Fixed Focus Camera) .......................... 58
3.14 Touch Interface ................................................................................. 61
4. TROUBLE SHOOTING ........................................................63
4.1 RF Component .................................................................................... 63
4. RX Trouble ............................................................................................. 64
4.3 TX Trouble .............................................................................................. 70
4.4 Power On Trouble ............................................................................... 76
4.5 Charging Trouble ................................................................................ 79
4.6 Vibrator Trouble .................................................................................. 81
4.7 LCD Trouble .......................................................................................... 84
4.8 Camera Trouble ................................................................................... 89
4.9 Speaker / Receiver Trouble ............................................................. 94
4.10 Earphone Trouble ............................................................................ 98
4.11 Microphone Trouble .....................................................................10
4.1 SIM Card Interface Trouble .........................................................105
4.13 Micro SD (uSD) Trouble ...............................................................110
4.14 Bluetooth Trouble ..........................................................................11
4.15 Wifi Trouble .......................................................................................115
4.16 FM Radio Trouble ...........................................................................118
4.17 Touch trouble ..................................................................................11
5. DOWNLOAD .....................................................................124
6. REPAIR GUIDE .................................................................137
6.1 Disassemble Main Board ...............................................................137
6. Disassembly Camera Module ......................................................138
6.3 Ready to Rework Camera ..............................................................139
6.4 Assembly Camera (Rework) ........................................................140
6.5 Soldering Camera Module and Function Test ......................141
7. BLOCK DIAGRAM .............................................................142
8. CIRCUIT DIAGRAM ..........................................................143
9. BGA PIN MAP ..................................................................152
10. PCB LAYOUT ...................................................................154
11. ENGINEERING MODE ....................................................160
12. STAND ALONE TEST ......................................................161
1.1 Introduction .....................................................................................161
1. Setting Method ..............................................................................161
1.3 Tx Test .................................................................................................164
1.4 Rx Test .................................................................................................165
13.AUTO CALIBRATION .......................................................166
13.1 Overview ...........................................................................................166
13. Tachyon Directory ..........................................................................166
13.3 Test Equipment Setup ..................................................................167
13.4 Procedure ..........................................................................................167
13.5 AGC ......................................................................................................174
13.6 APC ......................................................................................................174
13.7 ADC ......................................................................................................174
13.8 Target Power ....................................................................................174
14. EXPLODED VIEW & REPLACEMENT PART LIST ...........175
14.1 EXPLODED VIEW .............................................................................175
14. Replacement Parts ........................................................................176
14.3 Accessory ..........................................................................................194
