LG W5200 Manuals

Manuals and User Guides for LG W5200. We have 1 LG W5200 manual available for free PDF download: Service Manual

LG W5200 Service Manual

LG W5200 Service Manual (135 pages)

LG GSM Phone Service manual

Brand: LG | Category: Cell Phone | Size: 14.23 MB

Table of Contents

Table of Contents
2
1 Introduction

5
- Purpose
  5
- Regulatory Information
  5
  - Security
    5
  - Incidence of Harm
    5
  - Changes in Service
    5
  - Maintenance Limitations
    5
  - Notice of Radiated Emissions
    6
  - Pictures
    6
  - Interference and Attenuation
    6
  - Electrostatic Sensitive Devices
    6
- Abbreviations
  7
2 Performance

9
- H/W Feature
  9
- Technical Specification
  10
3 Technical Brief

14
- General Descreption
  14
- Receiver
  14
  - RF Front End
    15
  - Demodulator and Baseband Processing
    15
  - DC Offset Compensation
    15
- Transmitter Part
  16
  - IF Modulator
    16
  - Opll
    17
  - Synthesizer
    17
  - TX APC Part
    18
  - Power Amplifier
    18
- 13 Mhz Clock
  19
- Power Supplies and Control Signals
  19
- Digital Main Processor
  20
- Analog Main Processor
  25
- Power Management
  27
- Memories
  29
- Display and Interfaces
  29
- Keypad Switches and Scanning
  30
- Microphone
  31
- Earpiece
  32
- Hands-Free Interface
  33
- Headset Jack Interface
  33
- Key Back-Light Illumination
  33
- LCD Back-Light Illumination
  34
- Multi-Color LED Illumination
  34
- Speaker & MIDI IC
  35
4 Trouble Shooting

36
- RF Components
  36
- Checking Rx Iq
  44
- Tx Trouble
  45
  - Checking Regulator Circuit
    46
  - Checking Vctcxo Circuit
    47
  - Checking Control Signal
    48
  - Checking Tx Iq
    49
  - Checking Rf Tx Level
    50
- Power on Trouble
  61
- Charging Trouble
  63
- LCD Trouble
  65
- Receiver Trouble
  67
- Speaker Trouble
  70
- MIC Trouble
  73
- Vibrator Trouble
  76
- Backlight Trouble
  78
- Folder On/Off Trouble
  80
- SIM Detect Trouble
  82
- Earphone Trouble
  84
- HFK Trouble
  88
5 Assembly Instruction

96
- Disassembly
  96
6 Download

103
- Download Setup
  103
- Download Procedure
  104
7 Block Diagram

107
- Main Board
  107
- Fpcb
  108
8 Circuit Diagram

110
- Baseband Interface
  110
- MIDI
  111
- Kye, I/F & Lcd con
  112
9 Pcb Layout

114
10 Engineering Mode

116
- BB Test [MENU 1]
  116
- RF Test [MENU 2]
  118
- MF Mode [MENU 3]
  119
- Trace Option [MENU 4]
  120
- Call Timer [MENU 5]
  120
- Fact. Reset [MENU 6]
  120
- S/W Version [MENU 7]
  120
11 Stand Alone Test

121
- Introduction
  121
- Setting Method
  121
- Means of Test
  121
12 Auto Calibration

122
- Overview
  122
- Requirements
  122
- Menu and Settings
  122
- Agc
  124
- Apc
  124
- Adc
  124
- Setting
  124
- How to Do Calibration
  124
13 Exploded View & Replacement Part List

125
- Exploded View
  125
- Accessories
  127
- Replacement Part List
  128
- Main Pcb
  129

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