NEC LCD1501-BK Manuals

Table of Contents

• 3

  Table of Contents

  • 1

    Service Manual
  • 4

    User's Manual
    • 5

      Canadian Department of Communications Compliance Statement
    • 5

      Fcc Information
    • 9

      Declaration of the Manufacturer
    • 10

      Quick Start
    • 12

      Remove Monitor Stand for Mounting
    • 13

      Specifications
    • 14

      Auto Adjust
    • 15

      Hot Key
    • 15

      Off Timer
    • 16

      Display Mode
    • 16

      Monitor Info
    • 17

      Recommended Use
  • 20

    Serial Number Information

• 28

  Adjustment Procedures

  • 29

    1 Application

  • 29

    2 Default Setting

    • 29

      Front Control Panel Layout
    • 30

      Special Key Operation

  • 29

    3 Basic Operation

  • 31

    4 Adjustment

    • 31

      Bias and Gain Control
    • 31

      Closure of the Power Circuit
    • 31

      Measuring Instruments, Jigs, and Tools
    • 31

      Power-Supply Voltage

  • 32

    5 VG-819 Setting Values

  • 33

    6 Explanations of the Factory Mode

• 35

  Inspection

  • 36

    1 Electrical Inspection

    • 36

      Check Power Manage Function
    • 36

      Electrical Performance
    • 36

      Frequency Change
    • 36

      Performance Check
    • 37

      Dielectric Strength
    • 37

      Ground Continuity
    • 37

      Insulation Resistance
    • 37

      Leakage Current

  • 37

    2 Safety

    • 38

      Input Signal

  • 37

    3 Preset Timing Sheet

  • 38

    4 Inspection of PLUG & PLAY Communication and OSM "MONITOR INFORMATION" for Model Name/ Serial Number

    • 38

      Program
    • 38

      System Connection
    • 39

      Operation
    • 42

      EDID Data File

  • 43

    5 External Inspection On the LCD Module

    • 43

      Inspection Condition
    • 43

      Standards for Display Conditions
    • 46

      Bezel Appearance
    • 46

      Foreign Material
    • 46

      Line Defect
    • 46

      Polarizer Defects
    • 46

      The Inspection Standard of Appearance

• 47

  Troubleshooting

  • 48

    No Display of Screen (Screen Is Black, Color of LED Is Amber)
  • 49

    Nothing Displays On Screen (Screen Is Black, Color of LED Is Green)
  • 52

    Checking the Back Light Unit
  • 53

    Abnormal Screen
  • 54

    Abnormal DDC2
  • 54

    Abnormal Plug and Play Operation
  • 55

    Checking the Control Circuit of Horizontal Sync Pulse
  • 55

    Checking the Interface Circuit of Sync Signal
  • 56

    Checking the Control Circuit of Vertical Sync Pulse
  • 57

    Checking the Resolution Change IC Movement
  • 58

    No Power On
  • 59

    Checking the Operation of CPU
  • 61

    Block Diagram
  • 64

    Replacement Parts List