LG U310 Manuals

Manuals and User Guides for LG U310. We have 1 LG U310 manual available for free PDF download: Service Manual

LG U310 Service Manual

LG U310 Service Manual (188 pages)

Brand: LG | Category: Cell Phone | Size: 4.08 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
- Gsm Transmitter
  21
- WCDMA Mode
  22
- LO Phase-Locked Loop
  25
- Off-Chip RF Components
  27
- Digital Baseband(DBB/MSM6250A)
  34
- Hardware Architecture
  35
- Subsystem(Msm6250A)
  37
  - Wideband Codec
    38
  - Vocoder Subsystem
    38
- External Memory Interface
  40
- H/W Sub System
  41
  - Msm Sub System
    43
  - Power Block
    46
  - Key Pad
    51
  - Camera Interface
    53
  - Camera Direction Detection
    56
  - Keypad Light
    57
  - Lcd Module
    58
  - Trans Flash
    64
- LG-U310 Main Features
  65
4 Trouble Shooting

71
- RF Component
  71
- Signal Path
  72
- Checking VCTCXO Block
  74
- Checking Ant. SW Module Block
  77
- Checking WCDMA Block
  80
- Checking Vcxo Block
  81
- Checking GSM Block
  86
  - Checking Vco Block
    87
  - Checking Pam Block
    91
  - Checking Rf Rx Block
    92
- Bluetooth RF Block
  94
- 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
  - Connecting to Pc
    121
  - Download Process
    129
- Troubleshooting Download Errors
  134
- Caution
  139
6 Block Diagram

140
- GSM & WCDMA RF Block
  140
- Interface Diagram
  141
7 Circuit Diagram

142
8 Pcb Layout

149
9 Calibration & RF Auto Test Program

154
- Configuration of HOT KIMCHI
  154
- How to Use HOT KIMCHI
  158
- Example for Using HOT KIMCHI
  159
10 Exploded View & Replacement Part List

162
- Exploded View
  162
- Replacement Parts
  164
- Mechanic Component
  164
- Main Component
  168
- Accessory
  186

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