LG 512W Telephone Manuals

LG 512W Telephone Manuals

Manuals and User Guides for LG 512W Telephone. We have 1 LG 512W Telephone manual available for free PDF download: Service Manual

LG 512W Service Manual

LG 512W Service Manual (104 pages)

Brand: LG | Category: Telephone | Size: 7.79 MB

Table of Contents

Table of Contents
2
1 Introduction

3
- Purpose
  3
- Regulatory Information
  3
- Abbreviations
  5
2 Performance

7
- H/W Features
  7
- Technical Specification
  8
3 Technical Brief

12
- Receiver
  12
- Synthesizer
  15
- Transmitter
  18
- 13Mhz Clock
  22
- Power Supplies and Control Signals
  22
- Digital Main Processor
  23
- Analog Main Processor
  26
- Power Management
  27
- Memories
  29
- Display and Interface
  29
- Keypad Switches and Scanning
  29
- Microphone
  31
- Earpiece
  31
- Hands-Free Interface
  32
- Buzzer Driver
  32
- Key Back-Light Illumination
  33
- LCD Back-Light Illumination
  33
4 Trouble Shooting

34
- RX Trouble
  35
- TX Trouble
  38
- Power on Trouble
  41
- Charge Trouble
  43
- LCD Trouble
  44
- Receiver Trouble
  45
- Buzzer Trouble
  46
- MIC Trouble
  47
- Vibrator Trouble
  48
- Indicator LED Trouble
  49
- Backlight LED Trouble
  51
- Folder On/Off Trouble
  52
- SIM Detect Trouble
  53
- Earphone Trouble
  54
- HFK Trouble
  56
5 Test Point Data

58
6 Stand Alone Test

75
- Introduction
  75
- Setting Method
  75
- Means of Test
  75
7 Auto Calibration

76
- Overview
  76
- Requirements
  76
- Menu and Settings
  76
- Agc
  78
- Apc
  78
- Adc
  78
- Setting
  78
- How to Do Calibration
  78
8 Assembly Instruction

79
- Disassembly
  79
- Disassembly of Front Cover Components
  82
- Disassembly of Folder
  84
9 Block Diagram

86
- Main Board
  86
- Fpcb
  87
10 Circuit Diagram

90
- BB Circuit
  90
- Download and Calibration
  90
- RF Circuit
  91
11 Pcb Layout

92
- Calibration
  92
12 Download and Calibration

94
- Download
  94
13 Engineering Mode

95
- BB Test [MENU 1]
  95
- RF Test [MENU 2]
  97
- MF Mode [MENU 3]
  97
- Trace Option [MENU 4]
  98
- Call Timer [MENU 5]
  98
- Fact. Reset [MENU 6]
  98
- S/W Version [MENU 7]
  98
14 Exploded View

99
15 Replacement Parts List

99

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