Service Manuals, User Guides, Schematic Diagrams or docs for : AOC Monitor LM525A

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LM525A


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                                                                             AOC LM525A




         SERVICE MANUAL

              15" LCD Monitor
                               LM525A




  THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS
BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF
THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RE LIABILITY FOR CHANGES,
ERRORS OR OMISSIONS.




                                         Page 1 of 49
                                                                                                                        AOC LM525A
                                                          Table of Content
Revision List.........................................................................................................................   3
1. Monitor Specifications........................................................................................................        4
2. LCD Monitor Description.....................................................................................................          5
3. Operating Instructions........................................................................................................        6
  3.1 General Instructions.........................................................................................................      6
  3.2 Front Panel Control..........................................................................................................      6
  3.3 Adjusting the Picture........................................................................................................      7
4. Input/Output Specification...................................................................................................         9
  4.1 Input Signal Connector.....................................................................................................        9
  4.2 Factory Preset Display Modes............................................................................................           10
  4.3 Power Supply Requirements.............................................................................................             10
  4.4 Panel Specification..........................................................................................................      11
     4.4.1 Panel Feature...........................................................................................................      11
     4.4.2 Display Characteristics...............................................................................................        11
     4.4.3 Optical Characteristics................................................................................................       12
     4.4.4 Parameter Guide Line For CCFL Inverter........................................................................                12
5. Block Diagram...................................................................................................................      13
  5.1 Monitor Exploded View.....................................................................................................         13
  5.2 Software Flow Chart.........................................................................................................       14
  5.3 Electrical Block Diagram...................................................................................................        16
     5.3.1 Main Board..............................................................................................................      16
     5.3.2 Inverter/Power Board..................................................................................................        17
6. Schematic.........................................................................................................................    18
  6.1 Main Board....................................................................................................................     18
  6.2 Power Board..................................................................................................................      24
  6.3 Audio Board...................................................................................................................     26
7. PCB Layout......................................................................................................................      27
  7.1 Main Board....................................................................................................................     27
  7.2 Power Board..................................................................................................................      28
  7.3 Audio Board...................................................................................................................     28
  7.4 Keypad Board................................................................................................................       28
8. Maintainability...................................................................................................................    29
  8.1 Equipments and Tools Requirement....................................................................................               29
  8.2 Trouble Shooting.............................................................................................................      30
     8.2.1 Main Board...............................................................................................................     30
     8.2.2 Power /Inverter/Board.................................................................................................        33
     8.2.3 Keypad Board...........................................................................................................       35
9. White-Balance, Luminance adjustment.................................................................................                  36
10. EDID Content...................................................................................................................      37
11. BOM LIST.........................................................................................................................    38




                                                             Page 2 of 49
                                                            AOC LM525A

                       Revision List
Revision     Date                  Change Description
  A00      Oct-29-05                    Original Revision




                         Page 3 of 49
                                                                                          AOC LM525A
1. MONITOR SPECIFICATIONS
                          Driving system                 TFT LCD

                          Size                           38.1cm(15.0")

                          Type                           HSD150MX15HSD

                          Pixel pitch                    0.297mm(H) x 0.297mm(V)

                          Viewing angle                  160(H) 115(V) (CR>5)
        LCD Panel
                          Luminance                      250cd/ m2

                          Contrast Ratio                 500:1

                          Response time                  25ms (typ)

                          Display colors                 16 million (6 bit + FRC)

                          R G B Analog                   0.7Vp-p

                          H/V separate                   TTL level

       Input signals      H/V composite                  TTL level

                          Horizontal frequency           30kHz



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