Table Of Contents - LG MG120a Service Manual

1. INTRODUCTION
2. PERFORMANCE
2.1 H/W Features..........................................................................................................P8
2.2 Technical Specification.........................................................................................P9
3. TECHNICAL BRIEF
3.1 MG120 Block Diagram.........................................................................................P15
3.2 RF Part Introductions...........................................................................................P16
3.3 Baseband Introductions......................................................................................P21
4. TROUBLE SHOOTING
4.1 RF Components....................................................................................................P34
4.2 RX Trouble.............................................................................................................P35
4.3 TX Trouble.............................................................................................................P41
4.4 Power On Trouble................................................................................................P48
4.5 Charging Trouble...............................................................................................P50
4.6 Vibrator Trouble..................................................................................................P52
4.7 LCD Trouble..........................................................................................................P54
4.8 Speaker Trouble...................................................................................................P56
4.9 SIM Card Interface Trouble..................................................................................P58
4.10 Earphone Trouble...............................................................................................P60
4.11 KEY backlight Trouble.......................................................................................P62
4.12 Microphone Trouble...........................................................................................P64
4.13 RTC Trouble........................................................................................................P66
4.14 Folder on/off Trouble..........................................................................................P68
5. Circuit and PCB Layout
6. ENGINEERING MODE
7. STAND ALONE TEST
8. CALIBRATION
9. Download
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10. Total ASSY
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11. Appendix

Table of Contents

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P5
P9
P15
P33
P70
P77
P78
P81
P89
P94