Service Manuals, User Guides, Schematic Diagrams or docs for : AOC LCD L27W451B aoc_l27w451b_232

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27'' LCD TV Color Monitor                                                                                             AOC L27W451B




Service
Service
Service




                                                                                                                  Horizontal Frequency
                                                                                                                        31.5KHz-48KHz

                                                        TABLE OF CONTENTS

  Description                                                      Page Description                                                    Page

Table Of Contents......................................................1 7.2 Power Board...................................................39
Revision List........................................................2 7.3 Key Board..........................................................42
1. Monitor Specification...............................................3 7.4 IR Board...............................................42
2. Operating Instructions.........................................5          7.5 DC-DC Board...............................................44
2.1 The Use Of Remote Control....................................5 7.6 Earphone Board............................................45
2.2 The Use Of Teletext............................................6 8. Block Diagram.................................................46
2.3 Front Panel Control Knobs.....................................7 8.1 Main Board.............................................46
2.4 OSD Operations...................................................8 8.2 Power Board..........................................47
2.5 How To Connect..................................................16 8.3 Exploded View.......................................48
3. Input/Output Specification......................................20 9. Schematic Diagram..............................49
3.1 Input Signal Connector..........................................20 9.1 Main Board........................................49
3.2 RGB Input Signal Timing .......................................21 9.2 Power Board...........................................61
4. Mechanical Instructions.......................................22 9.3 Tuner Board................................................63
5. Repair Flow Chart ..........................................27 9.4 Earphone Board...................................66
6. White Balance Luminance Adjustment...............33 10. BOM List.........................................................67
7. PCB Layout.....................................................37 11. Different Parts List.............................................94
7.1 Main Board....................................................37

                                                           SAFETY NOTICE

   ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE
   CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
   ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.

           CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

                                                                       1
27'' LCD TV Color Monitor                                      AOC L27W451B

                                Revision List

    Version      Release Date   Revision Instructions      TPV Model

      A00        Oct.-30-2006       Initial Release     E275MTNBC3A3NP

      A00        Nov.-22-2006     Second Release        E275MTNBC3AC2P




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27'' LCD TV Color Monitor       AOC L27W451B
1. Monitor Specifications




                            3
27'' LCD TV Color Monitor       AOC L27W451B




                            4
27'' LCD TV Color Monitor           AOC L27W451B
2. Operations Instructions
2.1 The Use of Remote Control




                                5
27'' LCD TV Color Monitor       AOC L27W451B
2.2 The Use Of Teletext




                            6
27'' LCD TV Color Monitor           AOC L27W451B
2.3 Front Panel Control Knobs




                                7
27'' LCD TV Color Monitor       AOC L27W451B
2.4 OSD Operations




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27'' LCD TV Color Monitor       AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B
2.5 How to Connect




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor        AOC L27W451B




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27'' LCD TV Color Monitor                                                                      AOC L27W451B
3. Input/Output Specification
3.1 Input Signal connector
This procedure gives you instructions for installing and using the LCD TV display.
Lay the display on the desired operation and plug the power cord into a convenient AC outlet. Three-wire power cord
must be shielded and is provided as a safety precaution as it connects the chassis and cabinet to the electrical
conduct ground. If the AC outlet in your location does not have provisions for the grounded type plug, the installer
should attach the proper adapter to ensure a safe ground potential.

Connect the 15-pin D-SUB color display shielded signal cable to your signal system device and lock both screws on
the connector to ensure firm grounding. The connector information is as follow:



                                                   1              5
                                              6
                                                                       10

                                                  11              15




                                       15 - Pin Color Display Signal Cable

                             Pin No.                        Description

                                1        Red Video
                                2        Green Video
                                3        Blue Video
                                4        Not used
                                5        GROUND
                                6        Red Video Ground
                                7        Green Video Ground
                                8        Blue Video Ground
                                9        No Pin
                                10       Sync. Ground
                                11       Not used
                                12       Serial Data for DDC
                                13       Horizontal Sync.
                                14       Vertical Sync.
                                15       Serial Clock for DDC

  Apply power to the display by turning the power switch to the "ON" position and allow about ten seconds for Panel
  warm-up. The Power-On indicator lights "GREEN" when the display is on.

  With proper signals feed to the display, a pattern or data should appear on the screen, adjust the brightness and
  contrast to the most pleasing display, or press auto-adjust to get the best picture-quality.

  This TV (with PC function) has power saving function following the VESA DPMS. Be sure to connect the signal
  cable to the PC.

  If your TV requires service, it must be returned with the power cord.




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27'' LCD TV Color Monitor                                                         AOC L27W451B
3.2 RGB Input Signal Timing


               Horizontal    Vertical       Sync Polarity           Presence          Screen Mode

Dots   Lines   Frequency    Frequency   Horizontal   Vertical   Horizonta Vertical   Normal   FULL

                 (kHz)        (Hz)                                                    (4:3)   (16:9)

  720



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