User Manuals: LG GD88O Cell Phone

Manuals and User Guides for LG GD88O Cell Phone. We have 1 LG GD88O Cell Phone manual available for free PDF download: Service Manual

LG GD88O Service Manual

LG GD88O Service Manual (243 pages)

Brand: LG | Category: Cell Phone | Size: 51.71 MB

Table of Contents

Table of Contents
2
Introduction

4
- Purpose
  4
- Regulatory Information
  4
- Abbreviations
  6
Performance

8
- Product Name
  8
- Supporting Standard
  8
- Main Parts : GSM Solution
  8
- HW Features
  9
- SW Features
  11
- Hw Spec
  13
- GD880 Figures
  19
Technical Brief

20
- Digital Baseband(DBB/MSM7227)
  20
- Hardware Architecture
  21
- Subsystem(Msm7227)
  24
- Power Block
  33
- External Memory Interface
  38
- W Sub System
  40
  - Msm Sub System
    45
  - Side Key
    47
- Audio and Sound
  51
- Camera / LCD
  57
- Pin Description
  62
- Proximity Sensor
  64
- Luminance Sensor
  65
- Motion Sensor
  66
- Vibrators
  67
- Main Board
  68
- Gsm Mode
  69
- Umts Mode
  71
- Gps Receiver
  74
- LO GENERATION and DISTRIBUTION CIRCUIT
  74
- Off-Chip Rf Components
  75
- LG GD880 Main Features
  79
- GD880 Main Component
  80
- Main Components
  81
Trouble Shooting

85
- RF Component
  85
- Signal Path
  87
- Checking TCXO Block
  91
- Checking FEM Block
  92
- Checking WCDMA Block
  95
- Checking GSM Block
  105
- GPS/WIFI/BT/FM Radio RF Components
  112
- GPS/WIFI/BT/FM Radio SIGNAL PATH
  114
- GPS/WIFI/BT/FM Radio TROUBLE SHOOTING
  115
- Power on Troubleshooting
  121
- Charger Troubleshooting
  125
- USB Trouble
  129
- Audio Trouble
  132
  - Audio Subsystem
    134
  - Speaker Phone Mode
    140
- Camera Trouble
  144
- VGA Camera Trouble
  147
- Main LCD Trouble
  149
- SIM Detect Troubleshooting
  152
- Side Key Troubleshooting
  154
- Linear Motor
  156
- Proximity Sensor On/Off Trouble
  157
- Luminance Sensor On/Off Trouble
  159
- Motion Sensor On/Off Trouble
  161
Download

163
Block Diagram

176
Circuit Diagram

184
Bga Pin Map

194
Pcb Layout

200
Rf Calibration

204
- Introduction
  205
- Terminology
  205
- Tachyon Main UI
  205
Exploded View & Replacement Part List

214
- Exploded View
  214
- Replacement Parts
  218
- Main Component
  223
- Accessory
  243

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