Service Manuals, User Guides, Schematic Diagrams or docs for : AOC LCD LE19K097 LE22K097 LE24K097 aoc_le19k097_le22k097_le24k097_lcd_tv

<< Back | Home

Most service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.




Image preview - the first page of the document
aoc_le19k097_le22k097_le24k097_lcd_tv


>> Download aoc_le19k097_le22k097_le24k097_lcd_tv documenatation <<

Text preview - extract from the document
  19_22_24LCD TV                                                                                                AOC LE19_22_24K097



Service
Service
Service
                                                                      LE19K097
                                                                      LE22K097
                                                                      LE24K097




                                                            TABLE OF CONTENTS

 Description                                                          Page        Description                                                    Page

Table of Contents............................................................1   6.2 Power Board..................................................27
Important Safety Notice...................................................2      6.3Led Board...............................................31
Revision List.........................................................3          6.4 Key Board.....................................................32
1. General Specification..................................................4      6.5 IR Board.......................................................33
2. Operating Instructions............................................5           7. Adjustment.......................................................34
2.1 The Use of Remote Control...................................5                8. Block Diagram........................................................36
2.2 To Use the Menu.................................................6            9. Schematic Diagram..........................................37
2.3 How to Connect................................................12             9.1 Main Board....................................................37
2.4 Front Panel Control Knobs..................................13                9.2 Power Board..................................................50
3. Input/Output Specification.......................................14           9.3 Inverter Board.................................................52
4. Mechanical Instructions.........................................16            9.4 Key Board.....................................................53
5. Repair Flow Chart ..............................................20            9.5 IR Board........................................................54
6. PCB Layout .......................................................25          10. Exploded View..............................................55
6.1 Main Board.......................................................25          11. BOM List......................................................58

                                                                 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
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:
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 person's 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.)




                                                          2
                         Revision List

Version   Release Date   Revision Instructions      TPV Model

 A00      Apr.31,2010        Initial Release     E19AM2NBWEG1NS

 A00      Apr.31,2010        Initial Release     E22AM2NBWEG1NS

 A00      Apr.31,2010        Initial Release     E24AM2NBWEG1NS




                               3
1. General Specification




                           4
2. Operating Instructions
2.1 The Use of Remote Control




                                5
2.2 To Use the Menus




                       6
7
8
9
10
11
2.3 How to Connect




                     12
2.4 Front Panel Control Knobs




                                13
3. Input/Output Specification
3.1 RGB Signal Input




                                 15 - Pin Color Display Signal Cable



 Pin No.      Description            Pin No.                  Description

   1           Red Video                 9                       No Pin
   2          Green Video               10                    Sync Ground
   3          Blue Video                11                        RXD
   4             TXD                    12                 Serial Data for DDC
   5            Ground                  13                      H-Sync.
   6          Red Ground                14                      V-Sync.
   7         Green Ground               15                Serial Clock for DDC
   8          Blue Ground


3.2 HDMI Digital Connector Pin Assignments




 Pin No.        Description                  Pin No.             Description

   1           TMDS Data2+                     2              TMDS Data2 Shield
   3            TMDS Data2-                    4                TMDS Data1+
   5         TMDS Data1 Shield                 6                 TMDS Data1-
   7           TMDS Data0+                     8              TMDS Data0 Shield
   9            TMDS Data0-                    10                TMDS Clock+
   11        TMDS Clock Shield                 12                TMDS Clock-
   13               CEC                        14         Reserved (N.C. on Device)
   15               SCL                        16                      SDA
   17         DDC/CEC Ground                   18                 +5V Power
   19          Hot Plug Detect




                                                    14
3.3 AV/S-Video/Component Video Inputs
 AV (Composite Video Input)
 Video1
                                          System             PAL, SECAM and DVB-T
                                         Amplitude        1Vpp (300mV-sync, 700mV-video)
                                        Impedance               75 ohm terminated

 S-Video (Y / C Input)
 S-Video2
                                          System                   PAL/ SECAM
                                     Y signal amplitude            1VppY-signal
                                     C signal amplitude         +/-700mV C-signal
                                        Impedance               75 ohm terminated
 Component (Y, Pb/Cb, Pr/Cr Input)
 Video3




                                                     15
4. Mechanical Instructions
1. Unplug the base
.




2. Remove 11 screws to remove the rear cover.




3. Remove5screws and unplug 4 connectors to remove the main board.




                                                 16
4. Remove 4 screws and unplug 4 connectors to remove the power board.




                                                  17
5. Remove 7 screws to remove the bracket.




6. Unplug two speakers.




7.Remove the 1 connect to remove the IR board.




8.Remove the 1 screw and 1 connect to remove the LED board.




                                                 18
9. Remove the front bezel.




10. Unplug Key Board.




11.The panel




                             19
5. Repair Flow Chart
No Picture (LED Orange)

                       No picture

                        OK
                                          NG
            Check key board/IR board               Change key board/IR board

                          OK
                                         NG
              Check 43V power supply            Check the power supply circuit

                          OK

 Check main board standby power supply    NG      Change U751

                         OK

                                         NG      Change U401
                         Check U401



                          OK

                                         NG
                       Check I2C bus           Check I2C communication




                                          20
Abnormal Display

                                           NG
               Check the source                           Reset source

                    OK

                                                NG
            Check signal filter circuit                       Replace the filter or resistance

                     OK
                                          NG                        OK
                   Check input                    RF signal                 Check TV system setup

                OK                                                                OK
                                          NG

               Check LVDS cable                       Replace LVDS cable           Check Tuner


                                                                                    OK
                    OK


No Sound           Check panel                       Replace panel               Replace Tuner
                                      NG
           Check the source                          Reset source

                   OK

               Check if mute

                   OK
                                                                                                 NG
                                           NG                      NG         Check TV
             Check input signal                        TV SIF                                         Reset TV system
                                                                               system

                   OK                                 OK
                                      OK                             NG
                Check U401                      Check U601                         Change U601
                                      NG
                   OK                            Change U401

                                     NG
                Check U601                       Change U601

                   OK
                                      NG
               Check speaker                      Change speaker




                                                     21
No Power (No LED Indicator)
For 19
                                                NG
 Check power cord and board interface                     Plug in power cord and interface

                 OK

                                         NG
         Check F901, BD901                                Replace F901, BD901

                 OK

                                    NG
   Check IC901                                Replace IC901

                 OK
                               NG
         Check T901                       Replace T901

                 OK

    Check Q901 Q920 D901            NG        Replace Q901 Q920 D901
    D915 D910 D908 D913 D923                  D915 D910 D908 D913 D923




For 22
                                                NG
 Check power cord and board interface                     Plug in power cord and interface

                 OK

                                         NG
         Check F901, BD901                                Replace F901, BD901

                 OK

                                    NG
   Check IC901                                Replace IC901

                 OK
                               NG
         Check T901                       Replace T901

                 OK

    Check Q901 Q920 D901            NG        Replace Q901 Q920 D901
    D908 D913                                 D908 D913




                                                     22
For 24
                                                 NG
 Check power cord and board interface                         Plug in power cord and interface

                 OK

                                          NG
         Check F901, BD901                                    Replace F901, BD901

                 OK

                                     NG
   Check IC901                                  Replace IC901

                 OK
                                NG
         Check T901                        Replace T901

                 OK

    Check Q901 Q920 D901             NG        Replace Q901 Q920 D901
    D908 D913                                  D908 D913




No Display (LED Indicator Green)

                   Check the source            NG        Reset source
                        OK
                                               NG
                   Check LVDS cable                      Reset LVDS cable
                       OK
                                                 NG
                 Check Q750, Q7501                            Replace Q750, Q7501
                      OK
                                                    NG
                 Check Q401, Q402                              Replace Q401, Q402
                        OK
                                               NG
                   Check U401                            Replace main board
                        OK
                                           NG
                      Check panel                    Replace panel




                                                         23
Key Board

                OSD is unstable or not working




                                                      N
            Is Key Pad Board connecting normally?         Connect Key Pad Board




                           Y


                                                      N
                 Is Button Switch normally?               Replace Button Switch




                           Y



                                                      N
                Is Key Pad Board Normally?                 Replace Key Pad Board




                           Y



                    Check Main Board




                                                 24
6. PCB Layout
6.1Main Board
715G4035M1A000005B




                     25
26
6.2 Power Board
715G3762P01W30002Ufor 19"




                            27
28
715G3895P0AH20002U (for 22"_24")




                                   29
30
6.3 Led Board
715G4100T01000004B




                     31
6.4 Key Board
715G4099K02000003U




                     32
6.5 IR Board
715G4098R01000004B




                     33
7. Adjustment

7.1 Auto color for signal slicering
7.1.1 General set-up
Equipment Requirements:
     Knoica Minolta CS-200 or equivalent instrument.
     Quantum Data Pattern Generator 881 or equivalent instrument.
Input requirements:
Input signal type: YPbPr signal
     1. 1080i/25mode, TVBar100 pattern by QuantumData 881.
     2. Select Picture mode to "Personal" mode and adjust the x, y data.

Input Signal Strength: 1 Vpp for Y signal ; 700 mVpp for Pb & Pr signal
Input Injection Point: YPbPr (RAC jack)
1080i/25, TVBar100 pattern




Alignment method:
Initial Set-up:
1. Select source as "YPbPr".
2. Set Smart Picture mode as "Personal" and then adjust Contrast = 58,
      Brightness=48, Color=58, set Color Temp. to be "cool" mode.
3. Apply "TVBar100" pattern which is color bar pattern by signal generator.
4. Enter "factory mode menu": press MENU + Numeric keys "1999"

Alignment:
1. At factory mode menu, select AUTO_COLOR item. Then press "OK" key of remote control to adjust ADC_GAIN_R, ADC_GAIN_G, ADC_GAIN_B and ADC_OFFSET_R, ADC_OFFSET_G, ADC_OFFSET_B. Then store those values to NVM.
2. Check the 16 grayscale pattern should be distinguished and color bar is correct
3. Reset AV setting, picture mode shall be recalled to be "Vivid" and Contrast=58, Brightness=48; Color=58.

Note:
EU 2k10 models have no need to operate "AUTO_COLOR" function, due to EFUSE is set "Disable" within NVM for defult. These ADC values will be produced by Main chip (MT5363) interal defination.


7.2 White balance adjustment
Alignment method:
Initial Set-up:
1. Select source as "YPbPr".
2. Set Contrast = 58 and Brightness=48, Color=58, at Vivid mode.
3. Apply "80% white pattern or Flat80 pattern by Component video generator.

                                                                                                                     34
4. Enter factory mode menu: press MENU + Numeric keys 1999".

Alignment:
1. Apply Flat pattern (80% white pattern).
2. Set color temperature to "NORMAL".
3. At factory mode menu, adjust the Scaler R Gain, Scaler G Gain, Scaler B Gain values to meet "NORMAL" color coordinates specification below. Then store those values to NVM
4. Set color temperature to "COOL".
5. At factory mode menu, adjust the Scaler R Gain, Scaler G Gain, Scaler B Gain values to meet "COOL" color coordinates specification below. Then store those values to NVM
6. Set color temperature to "WARM".
7. At factory mode menu, adjust the Scaler R Gain, Scaler G Gain, Scaler B Gain values to meet "WARM" color coordinates specification below. Then store those values to NVM



Color temperature Normal/Warm/Cool (x, y) co-ordinates specification:
 `
                                                                                           Picture Mode            x                     y
                                                                                           Normal (9000oK)         0.289



◦ Jabse Service Manual Search 2019 ◦ Jabse Pravopis ◦ Other service manual resources online : FixyaeServiceinfo