Service Manuals, User Guides, Schematic Diagrams or docs for : AOC Monitor AOC LM729 Sm

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AOC LM729 Sm


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LM-729 Service Manual                                  Rev: A




         SERVICE MANUAL

                        17" LCD Monitor
                             LM-729




  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 61
LM-729 Service Manual                  Rev: A
                                            Prepared: Shiwei
                                            Date: Jul-30-03




                        Page 2 of 61
LM-729 Service Manual                                                 Rev: A


                                     Revision History
  Revision       Date         Page   Items                     Modification

     A       Date:Jul-30-03    All           First version release;




                                        Page 3 of 61
LM-729 Service Manual                                                                       Rev: A


                                              Table of Contents
 Table of Contents ---------------------------------------------------------------------------------------------------3

 1. MONITOR SPECIFICATIONS                    ---------------------------------------------------------------------------5

 2. LCD MONITOR DESCRIPTION ---------------------------------------------------------------------------6

 3. OPERATING INSTRUCTIONS                     ---------------------------------------------------------------------------7

 3.1 GENERAL INSTRUCTIONS                       -------------------------------------------------------------------------7

 3.2 CONTROL BUTTONS                 ------------------------------------------------------------------------------------7

 3.3 ADJUSTING THE PICTURE--------------------------------------------------------------------------------7

 4. Input/Output Specification          - -------------------------------------------------------------------------------10

 4.1 Input Signal Connector              --------------------------------------------------------------------------------10

 4.2 Factory Preset Display Modes -------------------------------------------------------------------------- 11

 4.3 Power Supply Requirements                ------------------------------------------------------------------------ 12

 4.3.1 Input Requirements -------------------------------------------------------------------------------------12

 4.3.2 Output Requirements              ------------------------------ ------------------------------------------------12

 4.4 PANEL SPECIFICATION                -------------------------------------------------------------------------------14

 4.4.1 Panel Feature          ------------------------------------------------------------------------------------------14

 4.4.2 Display Characteristics          --------------------------------------------------------------------------------14

 4.4.3 Optical Characteristics          -------------------------------------------------------------------------------14

 4.4.4 Parameter guide line for CCFL Inverter                     ------------------------------------------------------14

 5. Block Diagram            ------------------------------------------------------------- -----------------------------15

 5.1 Monitor Exploded View ------------------------------------------------------------------------------------15

 5.2 Software Flow Chart           -------------------------------------------------------------------------------------16

 5.3 Electrical Block Diagram             ------------------------------------------------------------------------------18

 5.3.1 Main Board -------------------------------------------------------------------------------------------------18


                                                    Page 4 of 61
LM-729 Service Manual                                                                        Rev: A
 5.3.2 Inverter/Power Board -------------------------------------------------------------------------------------19

 6. Schematic -------------------------------------------------------------------------------------------------------21

 6.1 Main Board          -----------------------------------------------------------------------------------------------21

 6.2 AUDIO       Board         -----------------------------------------------------------------------------------------25

 6.3 Key Board           ------------------------------------------------------- ---------------------------------------26

 6.4 Inverter/Power Board           -----------------------------------------------------------------------------------27

 7. PCB Layout         -------------------------------------------------------------------------------------------------29

 7.1 Main Board          -----------------------------------------------------------------------------------------------29

 7.2 Inverter/Power Board           -----------------------------------------------------------------------------------31

 7.3 Keypad Board And Audio board-------------------------------------------------------------------------34

 8. Maintainability --------------------------------------------------------------------------------------------------34

 8.1 Equipments and Tools Requirements                  ----------------------------------------------------------------35

 8.2 Trouble Shooting ---------------------------------------------------------------------------------------------33

 8.2.1 Main Board --------------------------------------------------------------------------------------------------35

 8.2.2 Power/Inverter Board -------------------------------------------------------------------------- ----------38

 8.2.3 Key Pad Board ---------------------------------------------------------------------------------------------40

 9. White-Balance, Luminance adjustment ----------------------------------------------------------------41

 10. EDIT Content            -------------------------------------------------------------------------------------------42

 11. BOM List -------------------------------------- -----------------------------------------------------------------43




                                                     Page 5 of 61
LM-729 Service Manual                                                       Rev: A
1.MONITOR SPECIFICATIONS
                          Driving system                  TFT Color LCD
    LCD Panel             Size                            43.2cm(17.0")
                          Pixel pitch                     0.264mm( H )x 0.264mm( V )
                          Viewable angle                  90



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