LG AR140B Manuals

Manuals and User Guides for LG AR140B. We have 1 LG AR140B manual available for free PDF download: Service Manual

LG AR140B Service Manual

LG AR140B Service Manual (166 pages)

Brand: LG | Category: Cell Phone | Size: 13.78 MB

Table of Contents

Table of Contents
4
1 Introduction

6
- Purpose
  6
- Regulatory Information
  6
- Abbreviation
  8
2 Performance

10
- H/W Feature
  10
- Technical Speciﬁ Cation
  11
3 Technical Brief

17
- GD310 Functional Block Diagram
  17
- Baseband Processor (BBP) Introduction
  18
- Power Management IC
  29
- Power ON/OFF
  34
- SIM & Usd Interface
  35
- Memory
  37
- LCD Display
  38
- Keypad Switching & Scanning
  39
- Keypad Back-Light Illumination
  40
- LCD Back-Light Illumination
  41
- 7-Segment LED Module
  42
- JTAG & ETM Interface Connector
  43
- Audio
  44
- Charging Circuit
  47
- FM Radio & BLUETOOTH
  48
- 5Pin Multi Media Interface Connector
  52
- General Description
  55
- Receiver Part
  57
- Transmitter Part
  58
- RF Synthesizer
  59
- Dcxo
  59
- Front End Module Control
  60
- Power Ampliﬁ er Module
  61
- Mode Selection
  62
- PAM Schematic
  63
4 PCB Picture

64
- Main PCB Component Placement
  64
- F_LCD Component Placement
  65
5 Trouble Shooting

66
- Trouble Shooting Test Setup
  66
- Power on Trouble
  67
- Charging Trouble
  70
- LCD Display Trouble
  72
- Camera Trouble
  74
- Receiver & Speaker Trouble
  76
- Microphone Trouble
  78
- Vibrator Trouble
  80
- Keypad Back Light Trouble
  82
- SIM & Usd Trouble
  84
- Sim Card
  85
- 7-Segment LED Trouble
  87
- Trouble Shooting of Receiver Part
  88
- Trouble Shooting of Transmitter Part
  94
6 Download & S/W Upgrade

103
- S/W Download Setup
  103
- Download Program User Guide
  104
7 Block Diagram

115
8 Circuit Diagram

116
9 BGA Pin Map

124
10 Pcb Layout

128
- Pcb Layout
  134
11 RF Calibration

136
- Test Equipment Setup
  136
- Calibration Step
  136
12 Stand-Alone Test

141
- Test Program Setting
  141
- Tx Test
  143
- Rx Test
  144
13 Exploded View & Replacement Part List

146
- Exploded View
  146
- Replacement Parts
  148
- Main Component
  153
- Accessory
  166

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