SERVICE MANUAL LCD TV Model No. LEA-22H03P MT8222 Chassis WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.
Service Manual Model No.:LEA-22H03P CONTENTS Chapter 1.General Information 1-1. Document Information ................3 1-2. General Guidelines ................3 1-3. Important Notice ..................3 1-3-1. Follow the regulations and warnings ............. 3 1-3-2. Be careful to the electrical shock ............3 1-3-3.
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Service Manual Model No.:LEA-22H03P Chapter 5. External Equipment Connections 5-1. Antenna Connection ................17 5-2. VCR Connection ................... 18 5-3. DVD Connection ................... 18 5-4. HDMI or DVI Connection ..............18 5-5. PC Connection ..................19 5-6. Monitor Out Connection ..............
Service Manual Model No.:LEA-22H03P Chapter 1.General Information 1-1. Document Information Document format: Adobe PDF Author: Compiler: 1-2. General Guidelines When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.
Service Manual Model No.:LEA-22H03P Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. The following techniques should be used to help reduce the incidence of component damage caused by electros static discharge (ESD).
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Service Manual Model No.:LEA-22H03P 1. Always unplug the receiver AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board module or any other receiver assembly. b. Disconnecting or reconnecting any receiver electrical plug or other electrical connection.
Service Manual Model No.:LEA-22H03P 12. Use only a grounded-tip soldering iron to solder or unsolder ES devices. 13. Use only an anti-static type solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ES devices.
Service Manual Model No.:LEA-22H03P 1-4. How to Read this Service Manual 1-4-1. Using icons: Icons are used to attract the attention of the reader to specific information. The meaning of each icon is described in the table below: Note: A “note” provides information that is not indispensable, but may nevertheless be valuable to the reader, such as tips and tricks.
Service Manual Model No.:LEA-22H03P Chapter 2. Specification 2-1. Specification list Model LE22T3 22 inches Screen Size Aspect Ratio 16:9 Resolution 1920*1080 Response Time (ms) Angel of View H:170/V:160 Color Display 16.7M No. of Preset Channels OSD Language English Russian Color System...
Service Manual Model No.: Chapter 3. Disassemble and Assemble 3-1. Remove the Stand 1. Remove the 2 and 3 screws indicated in picture 1. 1. Lay down the unit so that back cover faces 2.Uncover the equipment, the FFC wire and upward.
Service Manual Model No.: 3-3. Remove the Main Board & Small Board There are four boards in the machine: A:Remote Control Board;B:Main Board;C:LED Driver Board ;D:Keypad Board (See picture 5). picture 7 3-3-3. Remove the Keypad Board There's no screw in this board,pull the keypad board out from Front Cabinet directly.
Service Manual Model No.: Chapter 4. Location of Controls and Components 4-1. Board Location Parts number Description A Borad 0090720951B Remote Control Board B Borad Main Board DZ0XG0E0A00 C Borad 0090724838 LED Driver Board D Borad 0090722685 Keypad Board 4-2. Main Board...
Service Manual Model No.: 4-2-1. Function Description: Main Board Process signal which incept from exterior equipment then translate into signal that panel can display. 4-2-2. Connector definition Main board connector CNE1 CNE2 CND3 Pin number Signal name Pin number Signal name Pin number Signal name RXO0-...
Service Manual Model No.: 4-3. Driver Board Connector definition: Signal name PS_ON ON/OFF +12V +12V Function description:To supply power for Panel. 4-4. Remote Control Board Connector definition: Signal name GREEN Function description:receive remote control signal 4-5. LED Panel Connector definition: see next page Function description:Display program...
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Service Manual Model No.: Pin number Signal name Description RXO0- minus signal of odd channel 0(LVDS) RXO0+ plus signal of odd channel 0(LVDS) RXO1- minus signal of odd channel 1(LVDS) RXO1+ plus signal of odd channel 1(LVDS) RXO2- minus signal of odd channel 2(LVDS) RXO2+ plus signal of odd channel 2(LVDS) RXOC-...
Service Manual Model No.: Chapter 5. External Equipment Connections 5-1. Antenna Connection Antenna or Cable Service without a Cable Box Connections. For optimum picture quality, adjust antenna direction if needed. Note: * It is recommended that you'd better use 75Ω coaxial cable to remove the disturbance caused by airwave.
Service Manual Model No.: 5-2. VCR Connection Connect the DVD video outputs (Y, P ) to the COMPONENT (Y, P ) input jacks on the TV and connect the DVD audio To avoid picture noise (interference), leave an outputs to the AUDIO jacks on the TV’ as adequate distance between the VCR and TV.
Service Manual Model No.: How to use: pattern, contrast or brightness in PC mode. If noise is present, change the PC mode to Turn on the digital set-top box. another resolution,change the refresh rate (Refer to the owner’s manual for the digital set-top to another rate or adjust the brightness and box.) contrast on the menu until the picture is clear.
Service Manual Model No.: 3.If you cause a static discharge when touching the unit and the unit fails to function, simply unplug the unit from the AC outlet and plug it back in. The unit should return to normal operation. Polarized AC Cord Plug. 5-9.Recommendation input Format Recommendation HDTV/SDTV(YPbPr/ 5-7.Headphones Connection...
Service Manual Model No.: Chapter 6. Operation Instructions 6-1. Front Panel Controls 1. TV/AV :All input source display and OK confirm. 2. CH(+/-) :Program minus and plus, menu options 3. VOL(+/-) :Volume increase and decrease, menu set and entry 4. MENU :Menu display 5.
Service Manual Model No.: Chapter 8. Measurements and Adjustments 8-1. Service Mode 8-1-1.How to enter into Service Mode The way to the factory mode menu: Step 1: Press Menu, Step 2: Input 8893, Step 3: Press “OK” System will be into the factory mode menu when 3 steps above are done. 8-1-2.How to exit If you want to exit this factory menu, please press the button ”Exit”...
Service Manual Model No.: 8-2-2. Factory Menu 2 Color Temperature Adjust the Color Temperature: standard,warm,cool;used when debugging R Gain/ G Gain/ B Gain/ R Offset/ G Color Temperature value in Current source Offset/ B Offset...
Service Manual Model No.: 8-2-3.Factory Menu 3 Video Mode Video Mode in Current source,press to choose the source Contrast/ Brightness/ Tint/ Color/ Value in Standard mode,corresponding OSD defaut value Sharpness Contrast Min/ Contrast Max/ Brightness Min/ Brightness Max/ Register adjust area Tint Min/ Tint Max/Color Min/Color Max/ Backlight Min/ Backlight Max 8-2-4.Factory Menu 4...
Service Manual Model No.: 8-2-5.Factory Menu 5 Every source switch,you can choose each source by it.Press to choose On or Off 8-2-6.Factory Menu 6 Some function switch,such as language or power,you can choose it by press ...
Service Manual Model No.: Chapter 9. Trouble shooting 9-1. Simple check Verify if the television is properly plugged Verify if the television is properly supplied power No picture/ No sound Verify if electricity is available. Verify if correct signals are input Press INPUT button to change signal input to TV input Blank screen Restart the television of power supply is interrupted...
Service Manual Model No.: 9-2. Mainboard Failure Check Phenomena: No Sound No Sound (All Mode) Fail Check the input Change Source input Source Pass Fail Check Re-soldering or change input/output IC U13 Of IC U13 of Main Pass Fail Check Re-soldering or change input/output IC U55...
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