LG L705i Manuals

Manuals and User Guides for LG L705i. We have 1 LG L705i manual available for free PDF download: Service Manual

LG L705i Service Manual

LG L705i Service Manual (196 pages)

Brand: LG | Category: Cell Phone | Size: 9.68 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
- Antenna 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 Phase-Locked Loop
  26
- Off-Chip RF Components
  28
- Digital Baseband(DBB/MSM6280)
  37
- Block Diagram(MSM6280)
  39
- Subsystem(Msm6280)
  40
- Power Block
  47
- External Memory Interface
  52
- H/W Sub System
  53
- Main Features
  70
4 Trouble Shooting

76
- RF Component
  76
- Checking VCXO Block
  78
- Checking Ant. SW Module Block
  80
- Checking UMTS Block
  82
- Checking GSM Block
  91
- Power on Troubleshooting
  94
- Charger Troubleshooting
  97
- USB Troubleshooting
  100
- SIM Detect Troubleshooting
  102
- Mega Camera Troubleshooting
  104
- Keypad Backlight Troubleshooting
  106
- FOLDER Close / Open Troubleshooting
  107
- Main LCD Troubleshooting
  108
- Receiver Path
  109
- Headset Path
  111
- Speaker Phone Path
  113
- Main Microphone
  115
- Headset Microphone
  117
- Vibrator
  119
5 Download

120
- Introduction
  120
- Downloading Procedure
  120
- Troubleshooting Download Errors
  134
- Caution
  140
6 Block Diagram

141
- GSM & UMTS RF Block
  141
- Interface Diagram
  143
  - Top Side
    145
  - Bottom Side
    146
7 Circuit Diagram

148
8 BGM Pin Map

158
9 Pcb Layout

160
10 Calibration & RF Auto Test Program (Hot Kimchi)

168
- Configuration of HOT KIMCHI
  168
- How to Use HOT KIMCHI
  169
11 Exploded View & Replacement Part List

174
- Exploded View
  174
- Replacement Parts
  176
- Mechanic Component
  176
- Main Component
  179
- Accessory
  194

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