LG MG120a Cell Phone Guides Manuals

Manuals and User Guides for LG MG120a Cell Phone Guides. We have 1 LG MG120a Cell Phone Guides manual available for free PDF download: Service Manual

LG MG120a Service Manual

LG MG120a Service Manual (106 pages)

Brand: LG | Category: Cell Phone | Size: 6 MB

Table of Contents

Table of Contents
3
1 Introduction

5
2 Performance

9
- H/W Features
  9
- Technical Specification
  10
3 Technical Brief

15
- MG120 Block Diagram
  15
- RF Part Introductions
  16
- Select Mode
  20
- Baseband Introductions
  21
  - Battery Charging Block
    24
  - Display and Interface
    26
  - Keypad Switches and Scanning
    27
  - Headset Interface
    30
4 Trouble Shooting

33
- RF Components
  34
- RX Trouble
  35
- TX Trouble
  41
- Power on Trouble
  48
- Charging Trouble
  50
- Vibrator Trouble
  52
- LCD Trouble
  54
- Speaker Trouble
  56
- SIM Card Interface Trouble
  58
- Earphone Trouble
  60
- KEY Backlight Trouble
  62
- Microphone Trouble
  64
- RTC Trouble
  66
- Folder On/Off Trouble
  68
5 Circuit and PCB Layout

70
6 Engineering Mode

77
- All Auto Test
  80
7 Stand Alone Test

82
- Means of Test
  83
8 Calibration

85
- Test Jig Operation
  85
9 Download

89

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