LG LG-A120 Manuals

Manuals and User Guides for LG LG-A120. We have 1 LG LG-A120 manual available for free PDF download: Service Manual

LG LG-A120 Service Manual

LG LG-A120 Service Manual (180 pages)

Brand: LG | Category: Cell Phone | Size: 18.17 MB

Table of Contents

Table of Contents
2
1 Introduction

3
- Purpose
  3
- Regulatory Information
  3
2 Performance

5
- H/W Features
  5
- S/W Features
  6
3 Technical Brief

14
- Digital Main Processor( MT6223 )
  14
  - System Overview
    15
  - General Description
    20
- Power Amplifier Module (SKY77542)
  22
- Transceiver Module
  23
- Ad6548 )
  23
- Memory Module (K5L6443ABM-AD11)
  26
- FM Radio Module (AR1200/1210)
  30
- LCD Interface
  32
- SIM Card Interface
  34
- KEYPAD Interface
  35
- Battery Charging Block Interface
  36
- Audio Interface
  37
- Vibrator Interface
  38
- Key LED Interface
  39
4 Trouble Shooting

40
- Power on Trouble
  40
- SIM Card Trouble
  43
- Vibrator Trouble
  45
- Keypad Trouble
  47
- RTC Trouble
  50
- Key Backlight Trouble
  52
- LCM Backlight Trouble
  55
- LCM Trouble
  58
- Microphone Trouble
  61
- Receiver Trouble
  64
- Speaker Trouble
  66
- Headphone Trouble
  69
- Charging Trouble
  73
- Torch LED Trouble
  75
- FM Radio Trouble
  77
- Rf Trouble Shooting
  79
- No Connection Trouble
  80
- RX Trouble
  83
- DCXO Trouble
  86
- SAW Filter Trouble
  87
- TX Trouble
  88
- Transceiver Trouble
  90
- PAM Trouble
  91
- Mobile Switch Trouble
  96
5 Download

98
- Download Setup
  98
- Download Process
  99
6 Block Diagram

107
7 Circuit Diagrma

108
8 BGA IC PIN Check

114
9 Pcb Layout

116
10 Engineering Mode

118
- All Auto Test
  121
11 Calibration

122
- Test Equipment Setup
  122
- Calibration Steps
  123
12 Stand Alone Test

162
- Test Configuration
  162
- META Tool Install Process
  163
- Rx Test
  166
- Tx Test
  172

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