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Copyright © 2010 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. PERFORMANCE..................................................9
2.1 H/W Features.................................................................................... 9
2.2 Technical Specification...............................................................11
3. TECHNICAL BRIEF............................................16
3.1 Digital Main Processor................................................................16
3.2 Power Management....................................................................20
3.3 FEM with integrated Power Amplifier Module.................32
3.4 Crystal(26 MHz, X102).................................................................34
3.5 RF Subsystem of PMB8810 (U101).........................................34
3.6 MEMORY(K5N3217ATA-AT80, U102 ) ...................................38
3.7 SIM Card Interface........................................................................40
3.8 LCD Interface..................................................................................41
3.9 Battery Charger Interface..........................................................43
3.10 Keypad Interface........................................................................44
3.11 Audio Front-End.........................................................................46
3.12 KEY BACLKLIGHT LED Interface............................................52
3.13 Vibrator Interface .......................................................................53
4. TROUBLE SHOOTING ......................................55
4.1 RF Component...............................................................................55
4.2 RX Trouble .......................................................................................56
4.3 TX Trouble........................................................................................60
4.4 Power On Trouble.........................................................................64
4.5 Charging Trouble..........................................................................67
4.6 Vibrator Trouble.............................................................................69
4.7 LCD Trouble.....................................................................................71
4.8 Speaker Trouble ............................................................................75
4.9 Earphone Trouble.........................................................................78
4.10 Microphone Trouble.................................................................81
4.11 SIM Card Interface Trouble.....................................................83
4.12 KEY backlight Trouble ..............................................................85
4.13 FM Radio Trouble .......................................................................87
5. DOWNLOAD.....................................................89
5.1 S/W Download...............................................................................89
5.2 Download program user guide..............................................90
5.3 Multi-Download Program Setting (Model-Base).............91
6. BLOCK DIAGRAM.............................................93
7. CIRCUIT DIAGRAM ..........................................95
8. BGA Pin Map....................................................99
9. PCB LAYOUT...................................................101
10.ENGINEERING MODE...................................103
11. AUTO CALIBRATION....................................104
11.1 Overview .................................................................................... 104
11.2 Configuration of HotKimchi ............................................... 104
11.3 Description of Basic File ....................................................... 105
11.4 Procedure................................................................................... 106
11.5 AGC............................................................................................... 109
11.6 APC ............................................................................................... 109
11.7 ADC............................................................................................... 109
11.8 Target Power ............................................................................. 109
12. EXPLODED VIEW & REPLACEMENT
PART LIST ....................................................111
12.1 EXPLODED VIEW...................................................................... 111
12.2 Replacement Parts.................................................................. 113
12.3 Accessory ................................................................................... 125
