Service Manuals, User Guides, Schematic Diagrams or docs for : AOC Monitor LM925

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LM925


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                                                                               AOC LM925




        SERVICE MANUAL

                19" LCD MONITOR

                                  LM925




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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.




                                            1
                                                                                                                               AOC LM925
                                                          Table of Content
Revision List.........................................................................................................................   4
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 Power Supply Requirements.............................................................................................             9
  4.3 Factory Preset Display Modes............................................................................................           10
  4.4 Panel Specification..........................................................................................................      11




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     4.4.1 Panel Features.........................................................................................................       11




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     4.4.2 Display Characteristics...............................................................................................        11
     4.4.3 Optical Characteristics................................................................................................       12
     4.4.4 Electrical Characteristics.............................................................................................       13




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5. Block Diagram...................................................................................................................      14
  5.1 Monitor Exploded View.....................................................................................................         14
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  5.2 Software Flowing 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
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  6.1 Main Board....................................................................................................................     19
  6.2 Audio Board..................................................................................................................      25
  6.3 Power Board..................................................................................................................      26
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7. PCB Layout......................................................................................................................      29
  7.1 Main Board....................................................................................................................     29
  7.2 Audio Board...................................................................................................................     30
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  7.3 Power Board..................................................................................................................      31
  7.4 Key Board.....................................................................................................................     31
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8. Maintainability...................................................................................................................    32
  8.1 Equipments and Tools Requirement....................................................................................               32
  8.2 Trouble Shooting.............................................................................................................      33
     8.2.1 Main Board...............................................................................................................     33
     8.2.2 Power /Inverter Board.................................................................................................        36
     8.2.3 Keypad Board...........................................................................................................       38
9. White-Balance, Luminance adjustment.................................................................................                  39
10. EDID Content...................................................................................................................      41
11. BOM LIST........................................................................................................................     42




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                                                                   AOC LM925

                            Revision List
Version      Date          Revision History       TPV Model Name
 A00       Feb-08-06         Initial Release      T980KH4HBAA1AP
 A01      Oct-14-2006   Add TPV Model in item11   T980KA2HLAMGAP




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                                       3
                                                                                       AOC LM925
1. Monitor Specifications
               Items                                      Description

                         Driving system                    TFT Color LCD

                         Type                              HSD190ME13

                         Size                              48.0cm(19.0")
   LCD Panel
                         Pixel pitch                       0.294mm (H) x 0.294mm (V)

                         Viewable angle                    150(H) 135(V)

                         Response time                     8 ms

                         Sync. Type                        H/V TTL




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                         Input Signal                      15Pin Analog




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   Input
                         H-Frequency                       30kHz 



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