Service Manuals, User Guides, Schematic Diagrams or docs for : AOC Monitor LM725

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LM725


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                                                                               AOC LM725




         SERVICE MANUAL

               17" LCD MONITOR




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                                   LM725

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  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.




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                                                                                                                             AOC LM725
                                                          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




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  4.3 Power Supply Requirements.............................................................................................             11




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  4.4 Panel Specification..........................................................................................................      11
     4.4.1 Panel Feature...........................................................................................................      11
     4.4.2 Display Characteristics................................................................................................       11
     4.4.3 Optical Characteristics................................................................................................       12




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     4.4.4 Electrical Characteristics.............................................................................................       13
5. Block Diagram...................................................................................................................      14
  5.1 Monitor Explored View......................................................................................................        14
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  5.2 Software Flow Chart.........................................................................................................       15
  5.3 Electrical Block Diagram...................................................................................................        17
     5.3.1 Main Board..............................................................................................................      17
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     5.3.2 Inverter/Power Board.................................................................................................         18
6. Schematic.........................................................................................................................    19
  6.1 Main Board....................................................................................................................     19
  6.2 Power Board..................................................................................................................      24
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  6.3 Audio Board...................................................................................................................     26
7. PCB Layout.......................................................................................................................     27
  7.1 Main Board....................................................................................................................     27
  7.2 Power Board..................................................................................................................      28
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  7.3 Audio Board...................................................................................................................     29
  7.4 Keypad Board................................................................................................................       29
8. Maintainability...................................................................................................................    30
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  8.1 Equipments and Tools Requirement....................................................................................               30
  8.2 Trouble Shooting.............................................................................................................      31
     8.2.1 Main Board...............................................................................................................     31
     8.2.2 Power /Inverter/Board................................................................................................         34
     8.2.3 Keypad Board...........................................................................................................       36
9. White-Balance, Luminance adjustment.................................................................................                  37
10. EDID Content...................................................................................................................      38
11. BOM List ........................................................................................................................    39




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                                                          AOC LM725

                            Revision List
Version     Date       Revision History      TPV Model Name
 A00      Mar-09-06     Initial Revision     T782KSQHMCPGA




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                                      3
                                                                                        AOC LM725
1. Monitor Specifications

                Items                                      Description

                          Driving system                    TFT Color LCD

                          Type                              LTM170EU-L21

                          Size                              43.2cm (17.0")
    LCD Panel
                          Pixel pitch                       0.264mm (H) x 0.264mm (V)

                          Viewable angle                    150(H) 135(V) (CR   10)




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                          Response time (type)              8 ms




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                          Sync. Type                        H/V TTL

                                                            15Pin Analog
                          Input Signal
    Input                                                   24Pin Digital




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                          H-Frequency                       30kHz 



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