E22T Aoc Manual

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21.5&23.6 TV Monitor

AOC V22t&V24t

Service Service Service

Table of ContentsDescription Page Description Page

Table of Contents...................................................1 Important Safety Notice.............................................2 Revision List....3 1. General Specification.........................................4 2. Operating Instructions...........5 2.1 The Use of Remote Control...........5 2.2 To Use the Menus...........6 2.3 Front Panel Control Knobs.......10 2.4 How to Connect.........11 3. Input/Output Specification........................13 4. Mechanical Instructions.................15 5. Repair Flow Chart .......19 6. PCB Layout ................22

6.1 Main Board.............22 6.2 Power Board..............26 6.3 Key Board...........34 6.4 IR Board..........34 7.Adjustment...............................................................35 8.Block Diagram...............................................36 9.Schematic Diagram..........38 9.1 Main Board.............38 9.2 Power Board..................46 9.3 Key Board...........49 9.4 IR Board.............50 10.Exploded View.........51 11.BOM List.......55

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

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Important Safety NoticeProper 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 ListVersion Release Date Revision Instructions Customer Model TPV Model V2A9CKNL2XIGNZ V22t A00 Nov. 06, 2009 Initial Release V2A9CKNL2XIGNZ V24t V2C9MKNLY9IGNN V2A9CKNC2XADNN

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1. General SpecificationModel Display area Recommend frequency Visual angle Brightness Contrast Sound output Color systems Sound Systems Antenna input impedance Power Voltage Power Consumption Power Consumption (Stand by) Dimensions (W)x(H)x(D) (mm) (with stand) Table stand Wall Mounting Environmental Considerations: Operating Temperature Operating Humanity Storage Temperature Storage Humanity V22t 546mm (21.5) 1920 x1080 Horizontal:170 Vertical:160(Typ.) 250cd/m 60000:1 2Wx2 PAL/NTSC (D/K,B/G,I)/(D/K,B/G,I ,M) 75 AC100-240V 50/60Hz 35W 1W 551.6x456x220.2 Not include. 100 x100mm M4x4 pcs (Screws) V24t 598mm (23.6) 1920 x1080 Horizontal:170 Vertical:160(Typ.) 300cd/m 60000:1 2Wx2 PAL/NTSC (D/K,B/G,I)/(D/K,B/G,I, M) 75 AC100-240V 50/60Hz 60W 1W 599.4x485.55x220.2 Not include. 100x100mm M4x4 pcs (Screws)

0~40 15% to 90% -20~60 15% to 90%

0~40 15% to 90% -20~60 15% to 90%

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2. Operating Instructions2.1 The Use of Remote Control

POWER Press to power ON/OFF (standby) TV. (Note:TV is never completely power off unless physically unplugged.) TV Press to choose TV source mode directly. VIDEO Press repeatedly to toggle between AV and S-VIDEO source modes HDMI/PC Press to toggle between HDMI and PC source modes. Component Signal Press to choose Component source mode directly. 0~91-Press to enter channel numbers. PRE CH Press to display the previous channel VOL Press or to adjust the volume.

CH Press to change TV channel up or down ,,,, Press to adjust the various function items on the menu. OK Press to display the submenu MENU: Press to open or exit MENU. WIDE Press to choose the display aspect. DISPLAY Press to show the information about the input source or TV channel. PICTURE Press to switch the preset of video preset mode: SOUND Press to switch the preset of audio preset mode. Sleep Press to set sleep timer, setting 0~120 minutes before your TV turn off automatically.Component input and TV input.

SOURCE: Press to choose the input source: PC Signal input, HDMI input, Video input, S-Video input. NICAM Press to activate the TV sounds,

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2.2 To Use the Menus1. Press the Menu button to display Main Menu. 2. Use the V- or V+ to select the function to be adjusted. 3. Use the P- or P+ to enter into the submenu, or to enable or adjust the selected function. 4. Press the Menu button to exit the Main Menu. Source Menu Press the Source button to enter the Source Menu: PC, HDMI, AV, S-Video, Component, TV.

Picture Setting

Brightness Adjustable between 0-100, set the backlight brightness of the picture. Contrast Adjustable between 0-100, set the contrast of the picture. Saturation Adjustable between 0-100, adjust the color concentration of the picture. (unavailable for PC and Component Signal modes) Sharpness Adjustable between 0-100, set the sharpness of thepicture. Color Temp. Provides three options Cold, Normal and Warm. DNR (unavailable for PC mode) Picture Mode Provides four options Mild, Standard, Vivid and User. DCR Turn on/off dynamic contrast mode Reset Restore the picture settings to the default mode. 6

Sound Setting (the same for all modes)

Sound Mode Switch between the five preset sound modes Bass Adjust the intensity of the bass Treble Adjust the intensity of the treble Balance Adjustable between 0-60. While adjusting in the range of 30-0, the sound of the right channel fades out to zero. While adjusting in the range of 30-60, the sound of the left channel fades out to zero. Reset Restore the sound settings to the default setting. Function Setting

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MENU language Select the OSD language between English/Simplified Chinese /Russina/Portuguese/French/Spanish. Image Ratio 4:3 16:9 Movie (unavailable for PC mode) Panorama (unavailable for PC mode) Sleep Timer Set the time for the TV set to enter the standby state (unavailable for PC mode) OSD Position Change the display position of the OSD menu.There are a total of 9 positions. OSD Transp. Adjustable between 0-10, set the transparency of the OSD menu. Timeout Adjustable between 5-60, set the display time (in seconds) of the OSD menu. Power Saver Turn on/off the power saving mode

Power On Recall Turn on/off the power on recall function Reset Restore the function settings to the default mode. Tuning (the following menus appear only in TV mode)

Channel Nr. Display the number of the current TV channel. Frequency Display the frequency of the current TV channel. Color System Display the color system of the current TV signal. (displayed as Auto after automatic saving) Sound System Display the sound system of the current TV signal. (displayed as Auto after automatic saving) Update Search Auto Search It is used for the user to search the channel automatically and save the TV program. Pressing the Menu key will exit the Auto Search mode. Manual Fine Tune Press and hold the Left or Right key for more than 3 seconds to enter the Manual Search mode; in case of program with signal, exit the Semi-Auto Search and save the current program in the current program number. Channel Skip It can be set as On and Off. When it is set a