LG AT&T GR500 Basic Feature Phone Manuals

Manuals and User Guides for LG AT&T GR500 Basic Feature Phone. We have 1 LG AT&T GR500 Basic Feature Phone manual available for free PDF download: Service Manual

LG AT&T GR500 Service Manual

LG AT&T GR500 Service Manual (229 pages)

Brand: LG | Category: Cell Phone | Size: 11.26 MB

Table of Contents

Table of Contents
2
1 Introduction

4
- Purpose
  4
- Regulatory Information
  4
2 System Specification

6
- General Function
  6
- Usable Environment
  7
- Radio Performance
  7
- Current Consumption
  15
- Rssi
  15
- Battery Bar
  15
- Sound Pressure Level
  16
- Charging
  17
3 Technical Brief

18
- Digital Baseband(DBB) & Multimedia Processor
  18
- GAM Hardware Subsystem
  38
- Audio Part
  49
- Gpadc(General Purpose ADC) and AUTOADC2
  56
- Charger Control
  57
- Voltage Regulation
  63
- RF Technical Description
  64
4 Trouble Shooting

74
- Power on Trouble
  74
- USB Trouble
  75
- SIM Detect Trouble
  76
- Microsd Card Trouble
  77
- Keypad Trouble
  78
- Touch Screen
  79
- Camera Trouble
  81
- Main LCD Trouble
  87
- Keypad Backlight Trouble
  89
- Folder ON/OFF Trouble
  90
- Audio Trouble Shooting
  92
- Charger Trouble Shooting
  111
- Checking Bluetooth Block
  113
- Checking AGPS Block
  117
- RF Component
  120
- Procedure to Check
  121
- Checking Common Power Source Block
  122
- Checking VCXO Block
  127
- Checking Front End Module Block
  131
- Checking Front End Module Block Input Logic
  132
- Checking WCDMA Block
  134
- Checking GSM Block
  144
- Checking Control Signal
  146
5 Download

157
6 Block Diagram

160
7 Circuit Diagram

162
8 BGA Pin Map

170
9 Pcb Layout

174
10 Calibration

182
- General Description
  182
- Environment
  182
- Calibration Environment
  183
- Program Operation
  184
- Calibration Procedure
  188
11 Stand-Alone Test

189
- General Description
  189
- USB Communication Setting
  190
- Program Operation
  191
- Stand-Alone Test
  194
12 Exploded View & Replacement Part List

196
- Exploded View
  196
- Replacement Parts
  204
- Main Component
  208
- Accessory
  229

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