LG A175 Manuals

Manuals and User Guides for LG A175. We have 1 LG A175 manual available for free PDF download: Service Manual

LG A175 Service Manual

LG A175 Service Manual (135 pages)

Brand: LG | Category: Cell Phone | Size: 15.03 MB

Table of Contents

Table of Contents
2
1 Introduction

3
- Purpose
  3
- Regulatory Information
  3
- Abbreviations
  5
2 Performance

7
- W Features
  7
- Technical Specification
  9
3 Technical Brief

14
- Digital Main Processor
  14
- Power Management
  18
- FEM with Integrated Power Amplifier Module
  30
- (Sky7754/Sky77543, U401)
  30
- General Description
  30
- Crystal(6 Mhz, X101)
  32
- RF Subsystem of PMB8810 (U101)
  32
- Functional Description
  33
- Memory(M36W0R5040U6S, U10)
  36
- SIM Card Interface
  38
- LCD Interface
  39
- Battery Charger Interface
  41
- Keypad Interface
  42
- Audio Front-End
  44
- KEY BACLKLIGHT LED Interface
  50
- Vibrator Interface
  51
- Hall IC
  52
4 Trouble Shooting

53
- RF Component
  53
- RX Trouble
  54
- TX Trouble
  58
- Power on Trouble
  62
- Charging Trouble
  65
- Vibrator Trouble
  67
- LCD Trouble
  69
- Speaker Trouble
  73
- Earphone Trouble
  76
- Headset Path
  77
- Microphone Trouble
  79
- SIM Card Interface Trouble
  81
- KEY Backlight Trouble
  83
- FM Radio Trouble
  85
5 Download

88
6 Block Diagram

101
7 Circuit Diagram

102
8 BGA Pin Map

107
- BGA PIN MAP (Top View)
  107
9 Pcb Layout

109
10 Engineering Mode

113
11 Auto Calibration

114
- Overview
  114
- Configuration of Tachyon
  114
- Description of Basic File
  115
- Procedure
  116
- Agc
  118
- Apc
  118
- Adc
  118
- Target Power
  119
12 Exploded View & Replacement Part List

120
- Replacement Parts
  121
- Main Component
  125
- 1.3 Accessory
  135

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