Table Of Contents - LG -A230 Service Manual

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 ..............................................................13
3.1 Digital Main Processor ...................................................................... 13
3. Power Management ......................................................................... 18
3.3 FEM with integrated Power Amplifier Module
(SKY77550, U500) ............................................................................... 31
3.4 Crystal(6 MHz, X100) ...................................................................... 33
3.5 RF Subsystem (U101) ........................................................................ 35
3.6 MEMORY(H8BCS0QG0MMR, U100) ............................................ 40
3.7 BT module ............................................................................................. 4
3.8 SIM Card Interface .............................................................................. 44
3.9 LCD Interface ........................................................................................ 45
3.10 Battery Charger Interface ............................................................. 48
3.11 Audio Interface ................................................................................. 49
3.1 Camera Interface(1.3M Fixed Focus Camera) ....................... 55
4. TROUBLE SHOOTING ........................................................57
4.1 RF Component .................................................................................... 57
4. RX Trouble ............................................................................................. 58
4.3 TX Trouble .............................................................................................. 64
4.4 Power On Trouble ............................................................................... 70
4.5 Charging Trouble ................................................................................ 73
4.6 Vibrator Trouble .................................................................................. 76
4.7 LCD Trouble .......................................................................................... 79
4.8 Camera Trouble ................................................................................... 83
4.9 Speaker / Receiver Trouble ............................................................. 87
4.10 Earphone Trouble ............................................................................ 90
4.11 Microphone Trouble ....................................................................... 93
4.1 SIM Card Interface Trouble ........................................................... 96
4.13 Micro SD (uSD) Trouble ................................................................. 99
4.14 Bluetooth Trouble ..........................................................................10
4.15 FM Radio Trouble ...........................................................................105
4.16 Wireless FM Radio Trouble .........................................................107
LGE Internal Use Only

Table Of Contents

5. DOWNLOAD .....................................................................110
6. BLOCK DIAGRAM .............................................................123
7. CIRCUIT DIAGRAM ..........................................................124
8. BGA PIN MAP ..................................................................129
9. PCB LAYOUT .....................................................................131
10.ENGINEERING MODE .....................................................133
11. STAND ALONE TEST ......................................................134
11.1 Introduction .....................................................................................134
11. Setting Method ..............................................................................134
11.3 Tx Test .................................................................................................137
11.4 Rx Test .................................................................................................139
12. AUTO CALIBRATION ......................................................141
1.1 Overview ...........................................................................................141
1. Directory structure of Tachyon .................................................141
1.3 Description of Folder & File. .......................................................14
1.4 Procedure ..........................................................................................143
1.5 Tachyon Main UI .............................................................................144
1.6 AGC ......................................................................................................145
1.7 APC ......................................................................................................145
1.8 ADC ......................................................................................................145
1.9 Target Power ....................................................................................145
13. EXPLODED VIEW & REPLACEMENT PART LIST ..........146
13.1 EXPLODED VIEW .............................................................................146
13. Replacement Parts ........................................................................147
13.3 Accessory ..........................................................................................163
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