LG U300C Manuals

Manuals and User Guides for LG U300C. We have 1 LG U300C manual available for free PDF download: Service Manual

LG U300C Service Manual

LG U300C Service Manual (184 pages)

Brand: LG | Category: Cell Phone | Size: 5.68 MB

Table of Contents

Table of Contents
2
1 Introduction

4
- Purpose
  4
- Regulatory Information
  4
2 Performance

6
- System Overview
  6
- Usable Environment
  7
- Radio Performance
  7
- Current Consumption
  13
- Rssi Bar
  13
- Battery BAR
  13
- Sound Pressure Level
  14
- Charging
  15
3 Technical Brief

16
- General Description
  16
- GSM Mode
  19
- WCDMA Mode
  23
- LO Phase-Locked Loop
  26
- Off-Chip RF Components
  28
- Digital Baseband (DBB/MSM6250A)
  33
- Hardware Architecture
  34
- Subsystem(Msm6250A)
  36
- External Memory Interface
  39
- H/W Sub System
  50
- U300 (TWEETY) Main Features
  63
4 Trouble Shooting

69
- RF Component
  69
- Signal Path
  70
- Checking VCXO Block
  71
- Checking Ant. SW Module Block
  74
- Checking WCDMA Block
  76
- Checking GSM Block
  85
- Bluetooth RF Block
  93
- Power on Trouble
  96
- USB Trouble
  98
- SIM Detect Trouble
  99
- Key Sense Trouble
  100
- Camera Trouble
  101
- Main LCD Trouble
  102
- Folder ON/OFF Trouble
  104
- Camera Direction Detection Trouble
  105
- Trans Flash Trouble
  106
- Audio Trouble Shooting
  107
- Charger Trouble Shooting
  117
5 Download

120
- Introduction
  120
- Downloading Procedure
  120
- Troubleshooting Download Errors
  134
- Caution
  138
6 Block Diagram

139
- GSM & WCDMA RF Block
  139
- Interface Diagram
  141
7 Circuit Diagram

142
8 Pcb Layout

149
9 Calibration

154
- Hot Kimchi
  154
- How to Use HOT KIMCHI
  155
10 Exploded View & Replacement Part List

158
- Exploded View
  158
- Replacement Parts
  160
- Mechanic Component
  160
- Main Component
  164
- Accessory
  182

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