Table Of Contents - LG -A100 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 ................................................................ 14
3.1 Digital Main Processor ......................................................................... 14
3. Power Management ............................................................................ 18
3.3 FEM with integrated Power Amplifier Module
(SKY77550, U301) .................................................................................. 30
3.4 Crystal(6 MHz, X10) ......................................................................... 3
3.5 RF Subsystem of PMB8810 (U101) ................................................. 3
3.6 MEMORY(FM5Q3, U10) ............................................................... 36
3.7 SIM Card Interface ................................................................................. 38
3.8 Display Interface .................................................................................... 39
3.9 Battery Charger Interface ................................................................... 41
3.10 Keypad Interface ................................................................................. 4
3.11 Audio Front-End .................................................................................. 44
3.1 KEY BACLKLIGHT LED Interface .................................................... 50
3.13 Vibrator Interface ................................................................................ 51
3.14 Torch LED Interface ............................................................................ 5
4. TROUBLE SHOOTING .......................................................... 53
4.1 RF Component ....................................................................................... 53
4. RX Trouble ................................................................................................ 54
4.3 TX Trouble ................................................................................................. 58
4.4 Power On Trouble .................................................................................. 6
4.5 Charging Trouble ................................................................................... 65
4.6 Vibrator Trouble ..................................................................................... 67
4.7 LCD Trouble ............................................................................................. 69
4.8 Speaker Trouble ..................................................................................... 7
4.9 Earphone Trouble .................................................................................. 75
4.10 Microphone Trouble .......................................................................... 78
LGE Internal Use Only

Table Of Contents

4.11 SIM Card Interface Trouble .............................................................. 80
4.1 KEY backlight Trouble ....................................................................... 8
5. DOWNLOAD ......................................................................... 85
6. BLOCK DIAGRAM ................................................................. 98
7. CIRCUIT DIAGRAM .............................................................. 99
8. BGA PIN MAP .................................................................... 103
9. PCB LAYOUT ....................................................................... 104
10. ENGINEERING MODE ...................................................... 106
11. AUTO CALIBRATION ........................................................ 107
11.1 Overview ..............................................................................................107
11. Directory structure of Tachyon ....................................................107
11.3 Description of Folder & File...........................................................108
11.4 Procedure .............................................................................................109
11.5 Tachyon Main UI ................................................................................110
11.6 AGC .........................................................................................................111
11.7 APC .........................................................................................................111
11.8 ADC .........................................................................................................111
11.9 Target Power .......................................................................................111
12. EXPLODED VIEW & REPLACEMENT PART LIST ............. 112
1.1 EXPLODED VIEW ................................................................................11
1. Replacement Parts ...........................................................................113
1.3 Accessory .............................................................................................13
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