Service Manuals, User Guides, Schematic Diagrams or docs for : LG Mobile Phone LG GB230 LG GB230 1
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Service Manual
Internal Use Only
Service Manual
GB230
Model : GB230
Date: June, 2009 / Issue 1.0
Table Of Contents
1. INTRODUCTION ............................................... 5 4.15 Micro SD Trouble ...................................................102
1.1 Purpose ......................................................................5 4.16 Bluetooth Trouble...................................................104
1.2 Regulatory Information .................................................5 4.17 FM Radio Trouble...................................................106
1.3 Abbreviations ..............................................................7 4.18 Slide on/off Trouble ................................................108
2. SYSTEM SPECIFICATION................................. 9 5. DOWNLOAD................................................. 110
2.1 H/W Features ..............................................................9 5.1 S/W Download ........................................................110
2.2 Technical Specification ...............................................11 5.2 Download program user guide..................................111
5.3 Multi-Download Program Setting (Model-Base)..........112
3. TECHNICAL BRIEF......................................... 16
3.1 Digital Main Processor ...............................................16 6. Block Diagram ........................................... 114
3.2 Power Management ..................................................21
7. CIRCUIT DIAGRAM ...................................... 115
3.3 FEM with integrated Power Amplifier Module
(SKY77531, U400) ....................................................35 8. BGA Pin Map .............................................. 123
3.4 Crystal(26 MHz, X100) ...............................................37
3.5 RF Subsystem of PMB8810 (U101) ............................38
9. PCB LAYOUT ............................................... 125
3.6 MEMORY(PF38F5060M0Y0BE, U100 ) .......................43 10. ENGINEERING MODE................................. 129
3.7 BT module ................................................................45
3.8 SIM Card Interface.....................................................47 11. STAND ALONE TEST.................................. 130
3.9 LCD Interface ............................................................48 11.1 Introduction...........................................................130
3.10 Battery Charger Interface .........................................51 11.2 Setting Method......................................................130
3.11 Keypad Interface .....................................................52 11.3 Tx Test ..................................................................132
3.12 Audio Front-End ......................................................54 11.4 Rx Test..................................................................133
3.13 Camera Interface(2M Fixed Focus Camera) ...............60 12. AUTO CALIBRATION .................................. 135
3.14 KEY BACLKLIGHT LED Interface ................................62 12.1 Overview...............................................................135
3.15 Vibrator Interface .....................................................63 12.2 Configuration of HotKimchi .....................................135
3.16 Slide SW Interface ...................................................64 12.3 Description of Basic File. ........................................136
4. TROUBLE SHOOTING ..................................... 65 12.4 Procedure .............................................................137
4.1 RF Component ..........................................................65 12.5 AGC......................................................................140
4.2 RX Trouble ................................................................66 12.6 APC ......................................................................140
4.3 TX Trouble .................................................................70 12.7 ADC......................................................................140
4.4 Power On Trouble ......................................................74 12.8 Target Power .........................................................140
4.6 Vibrator Trouble .........................................................79 13. EXPLODED VIEW & REPLACEMENT
4.7 LCD Trouble ..............................................................81 PART LIST ................................................ 141
4.8 Camera Trouble .........................................................85 13.1 EXPLODED VIEW ...................................................141
4.9 Speaker Trouble ........................................................89 13.2 Replacement Parts ................................................143
4.10 Earphone Trouble.....................................................91 13.3 Accessory .............................................................159
4.11 Receiver Trouble ......................................................93
4.12 Microphone Trouble .................................................95
4.13 SIM Card Interface Trouble .......................................97
4.14 KEY backlight Trouble ..............................................99
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