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  • 32_42 LCD TV AOC L32_42DK99FU

    1

    Service Service Service

    TABLE OF CONTENTS

    Description Page Description Page

    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

    6.2 Power Board...........35

    6.3 Key Board...........39

    6.4 IR Board..........40

    7. Adjustment...................41

    8. Block Diagram..................................................42

    9. Schematic Diagram.........43

    9.1 Main Board..........43

    9.2 Power Board..............61

    9.3 Key Board...........63

    9.4 IR Board..............64

    10. Exploded View....65

    11. BOM List...67

    Table of Contents...................................................1

    Important Safety Notice.............................................2

    Revision List3

    1. General Specification.........................................4

    2. Operating Instructions...........6

    2.1 The Use of Remote Control...........6

    2.2 To Use the Menu.............7

    2.3 How to Connect.........14

    2.4 Front Panel Control Knobs.......20

    3. Input/Output Specification........................21

    4. Mechanical Instructions.................23

    5. Repair Flow Chart .......27

    6. PCB Layout .............33

    6.1 Main Board.............33

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    Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended. It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It is also important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. AOC could not possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, AOC has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by AOC must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected. Hereafter throughout this manual, AOC Company will be referred to as AOC. WARNING Use of substitute replacement parts, which do not have the same, specified safety characteristics might create shock, fire, or other hazards. Under no circumstances should the original design be modified or altered without written permission from AOC. AOC assumes no liability, express or implied, arising out of any unauthorized modification of design. Servicer assumes all liability. FOR PRODUCTS CONTAINING LASER: DANGER-Invisible laser radiations when open AVOID DIRECT EXPOSURE TO BEAM. CAUTION-Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. CAUTION -The use of optical instruments with this product will increase eye hazard. TO ENSURE THE CONTINUED RELIABILITY OF THIS PRODUCT, USE ONLY ORIGINAL MANUFACTURER'S REPLACEMENT PARTS, WHICH ARE LISTED WITH THEIR PART NUMBERS IN THE PARTS LIST SECTION OF THIS SERVICE MANUAL. Take care during handling the LCD module with backlight unit -Must mount the module using mounting holes arranged in four corners. -Do not press on the panel, edge of the frame strongly or electric shock as this will result in damage to the screen. -Do not scratch or press on the panel with any sharp objects, such as pencil or pen as this may result in damage to the panel. -Protect the module from the ESD as it may damage the electronic circuit (C-MOS). -Make certain that treatment persons body is grounded through wristband. -Do not leave the module in high temperature and in areas of high humidity for a long time. -Avoid contact with water as it may a short circuit within the module. -If the surface of panel becomes dirty, please wipe it off with a soft material. (Cleaning with a dirty or rough cloth

    may damage the panel.)

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    Revision List

    Version Release Date Revision Instructions TPV Model

    A00 Jun.30,2010 Initial Release E32AA2NCWGA1NNS

    A00 Jun.30,2010 Initial Release E42AA2NCWGA1NNS

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    1. General Specification

    Computer formats

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    Video formats

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    2. Operating Instructions 2.1 The Use of Remote Control

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    2.2 To Use the Menus 1. Press the MENU/EXIT button to display or close the main menu. 2. Use the , v, , and ENTER to move around to select, adjust or confirm an item in the OSD (On Screen Display) menu. Press the MENU/EXIT button to enter the main OSD. Adjust the items including Picture Setting, Audio Setting, Feature Setting, Installation Setting. However, some function items in the menus may only be enabled in the particular source modes.

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    Picture Setting The Picture Setting in TV mode shows as below.

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    Picture Setting ( For PC source only )

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    Audio Setting

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    Features Setting

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    Feature Setting (For PC source only)

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    Installation setting

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    2.3 How to Connect Using Your Antenna or Cable for TV Note: It is strongly recommended that you connect the antenna/cable input using a 75-ohm coaxial cable to receive optimum picture quality.

    1. Turn off the TV. 2. Connect the coaxial (RF) connector from your antenna or cable (out-of-the-wall, not from the Cable Box) to the ANTENNA connector at the rear of the TV 3. Turn on the TV. 4. Select TV using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV, or pressing the TV button on the Remote Control. 5. Connect the AV OUT and AV IN of the other TV, the signal will display on the other TV. Using the Antenna or Cable for your VCR

    1. Turn off the TV. 2. Connect the Output to TV, RF Out or Antenna Out connector on the rear of your VCR to the ANTENNA connector at the rear of the TV. 3. Turn on the TV. 4. Select TV using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or directly by pressing the TV button on the Remote Control. 5. Connect the AV OUT and AV IN of the other TV, the signal will display on the other TV.

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    Connecting Your TV Set-Top Box Using HDMI TV Set-Top Boxes that have a HDMI digital interface should be connected to the HDMI input of the LCD TV for optimal results.

    Using Component Video Connecting your TV Set-Top Box (Better):

    1. Turn off the TV and TV Set-Top Box. 2. Connect the Pr (red color) connector on your TV Set-Top Box to the corresponding Pr (red color) connector in the Component group. 3. Connect the Pb (blue color) connector on your TV Set-Top Box to the corresponding Pb (blue color) connector in the Component group. 4. Connect the Y (green color) connector on your TV Set-Top Box to the corresponding Y (green color) connector in the Component group. 5. Using an audio cable (red and white connectors), connect the cable to the audio output connectors associated with the Component output on your TV Set-Top Box and connect the other end to the audio connectors associated with the Component. 6. Turn on the TV and TV Set-Top Box. 7. Select YPbPr using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or directly by pressing the COMP button on the Remote Control. NOTE Refer to your TV Set-Top Box user manual for more information about the video output requirements of the product or consult your cable or satellite operator.

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    Connecting Your Basic Set-Top Box Using Composite Video

    1. Turn off the TV and Set-Top Box. 2. Using an AV Cable, connect the Video (yellow color) connector on your Set-Top Box to the corresponding Video (yellow color) connector in the AV group at the rear of the TV. 3. Using the red and white connectors, connect the cable to the audio output connectors associated with the Video output on your Set-Top Box and connect the other end to the audio connectors associated with the AV input at the rear of the TV. 4. Turn on the TV and Set-Top Box. 5. Select AV-1 using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or directly by pressing the VIDEO button on the Remote Control. Using Coax (RF)

    1. Turn off the TV. 2. Using a Coax (RF) cable, connect one end to the TV. 3. Turn on the TV. 4. Select TV using the SOURCE button on the Remote control or the INPUT keypad on the side of the TV or directly by pressing the TV button on the Remote Control. Connecting Your DVD Player Using HDMI DVD players that have a digital interface such as HDMI (High Definition Multimedia Interface) should be connected to the HDMI input of the LCD TV for optimal results. Connecting your DVD Player (Best)

    1. Turn off the TV and DVD player.

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    2. Connect a HDMI cable

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