LG U370 Manuals

Manuals and User Guides for LG U370. We have 2 LG U370 manuals available for free PDF download: Service Manual, User Manual

LG U370 Service Manual

LG U370 Service Manual (179 pages)

Brand: LG | Category: Cell Phone | Size: 8.41 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
  14
- Sound Pressure Level
  15
- Charging
  15
3 Technical Brief

16
- General Description
  16
- GSM Mode
  18
- UMTS Mode
  22
- LO Generation and Distribution Circuits
  24
- Off-Chip RF Components
  24
- Digital Baseband(DBB/MSM6245)
  33
- Subsystem(Msm6245)
  36
- Power Block
  44
- External Memory Interface
  49
- H/W Sub System
  51
- Main Features
  65
4 Trouble Shooting

70
- RF Component
  70
- Signal Path_Umts Rf
  73
- Signal Path_Gsm Rf
  74
- Checking VC-TCXO Block
  75
- Checking Front-End Module Block
  77
- Checking UMTS Block
  79
- Checking Bluetooth Block
  84
- Power on Troubleshooting
  86
- Charger Troubleshooting
  89
- USB Troubleshooting
  91
- SIM Detect Troubleshooting
  92
- Camera Troubleshooting
  95
- LCD Module Troubleshooting
  98
- Receiver Path
  100
- Headset Path
  102
- Speaker Phone Path
  104
- Main Microphone
  106
- Headset Microphone
  108
5 Download

110
- Introduction
  110
- Downloading Procedure
  110
- Connecting to Pc
  111
- Troubleshooting Download Errors
  123
- Caution
  128
6 Block Diagram

129
- GSM & UMTS RF Block
  129
- Interface Diagram
  131
  - Memory Interface
    132
  - Top Side
    135
  - Bottom Side
    136
7 Circuit Diagram

138
8 Bga IC Pin Map

144
9 Pcb Layout

148
10 Calibration & RF Auto Test Program (Hot Kimchi)

154
- Configuration of HOT KIMCHI
  154
- How to Use HOT KIMCHI
  157
11 Exploded View & Replacement Part List

160
- Exploded View
  160
- Replacement Parts
  162
- Mechanic Component
  162
- Main Component
  164
- Accessory
  177

LG U370 User Manual

LG U370 User Manual (130 pages)

Brand: LG | Category: Handsets | Size: 3.8 MB

Table of Contents

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