Service Manuals, User Guides, Schematic Diagrams or docs for : TOSHIBA LCD 32XV550PR VER.2.00 toshiba_32xv550pr_ver.2.00_sm

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ADJUSTMENT [LCD Color Television] ASIA_EU                                        . 1  20




      ADJUSTMENT


   Service Mode

   Entering to Service Mode




                                          1. Set VOLUME to minimum and press
                                             button once on remote control.




                    


                                          2. Press    button again and hold button down.




                    


          Service Mode display

                                          3. While holding the    button, press MENU
                                             button on TV set.




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   Displaying the Adjustment Menu

   Press MENU button on TV.

              Service Mode




            Press   Press


            Adjustment Mode




   Key Function in the Service Mode

   The following key entry during display of adjustment menu provides special functions.


    CAUTION: Never try to perform initialization unless you have changed the
    memory IC.




                                                  button (on remote control)




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    Test signal selection

    Selection of the adjustment items            CH         (on TV or remote control)

    Change of the data value                     Volume      +/- (on TV or remote control)

    Adjustment menu mode ON/OFF                  MENU button (on TV)

    Initialization of the memory (QA02)          CALL + CH      button on TV

    Reset the count of operating
                                                 CALL + CH      button on TV
    protect circuit to "00"

    Turn off I2C bus communication               CALL + Volume       + button on TV

    "RCUT" selection                             1 button

    "GCUT" selection                             2 button

    "BCUT" selection                             3 button

    "CNTX" selection                             4 button

    "COLC" selection                             5 button

    "UVTT" selection                             6 button

    Automatic A/D Adjustment
                                                 7 button
    (PC, Component, Composite (PAL, NTSC))

    Self diagnostic display ON/OFF               9 button




   Selecting the Adjusting Item

   Every pressing of CH       button in the service mode changes the adjustment items in the
   order of table below. (    button for reverse order)




   SETTING & ADJUSTING DATA

   [ SERVICE MODE ]

   ADJUSTING ITEMS AND DATA IN THE SERVICE MODE:

   Note:

   The image system data of RCUT-BDRV is different by each image format.
   The PAL value is indicated in the table.
   Never adjust H.POS and V.POS except PAL/WIDE mode.



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     Item                    Name of adjustment
    RCUT    R CUT OFF

    GCUT    G CUT OFF

    BCUT    B CUT OFF

    RDRV    R DRIVE

    GDRV G DRIVE

    BDRV    B DRIVE

    BRTC    BRIGHTNESS CENTER

    COLC    COLOR CENTER

    UVTT    BASE BAND TINT

    CNTX    CONTRAST MAX

    VOLUX MAX VOLUME LIMITED

    PLLW0 PLL WAIT TIME

    PLLW1 PLL WAIT TIME

    PLLW2 PLL WAIT TIME

    PLLW3 PLL WAIT TIME

    PLLW4 PLL WAIT TIME

    PLLW5 PLL WAIT TIME

    OPT1    TV SET OPTION 1

    OPT2    TV SET OPTION 2

    OPT3    TV SET OPTION 3

    OPT4    TV SET OPTION 4 (PANEL OPT DATA FOR VENDOR)

    OPT5    TV SET OPTION 5 (PANEL OPT DATA FOR SIZE)

    OPT6    TV SET OPTION 6 (HOTEL MODE)

    OPT7    TV SET OPTION 7 (HOTEL MODE)

    OPT8    TV SET OPTION 8 (HOTEL MODE)

    TVOP    TV SET OPTION

    ID      MODEL ID

    BDWID BORDER WIDTH FOR EXACT SCAN

    BDHIT BORDER HEIGHT FOR EXACT SCAN


   Factory preset data will be loaded after setting Model ID data.




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   (Refer to Initialization of Memory Data of QA02 and setting data of signal board.)




   Adjusting the Data

   Pressing of VOLUME        +/- button will change the value of data in the range from 00H to
   FFH. The variable range depends on the adjusting item.




   I2C Bus Off

    Turn off I2C communication between IC700 and IC400.

    1) Press and hold the CALL button on the remote control, then press the Volume
       + button on the TV.

    2) Display "BUS Off" OSD.

    3) I2C communication turned off.

   Note:

   To return Bus on status, press and hold the CALL button on the remote control, then press
   the Volume       + button on the TV again. TV will be turned off and automatically turned
   on, then status will be Bus On.




   Setting TVOP

   Enter to service mode and select menu of TVOP by pressing P or P during display of
   adjustment menu. After selecting TVOP, press    + or     - to set I2C check function to
   disable or enable as below.

     TVOP            FUNCTION DESCRIPTION                    1     0 (Normal)
    D5 (bit5) I2C check between IC700 and IC400. (WDT) Disable Enable




   Setting Panel Option Data



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   Panel option data is subject to OP4 and OP5.
   Enter to service mode and select menu of OPT4 or OPT5 by pressing P or P during
   display of adjustment menu. After selecting OPT4 or OPT5, press    + or - to set OPT4
   or OPT5 value as table below.


   Panel option data

            Series              Model name           Panel vendor OPT4 value OPT5 value
    XV555D EU Digital      32XV555D/553D/556D        SAMSUNG             0x86             0x45

                           37XV555D/553D/556D        LGD                 0x81             0x66

                           42XV555D/553D/556D        LGD                 0x81             0x67

                           46XV555D                  SAMSUNG             0x86             0x4A

                           52XV555D                  SAMSUNG             0x86             0x4B

    XV550P EU Analog 32XV550P/550PR                  SAMSUNG             0x86             0x45

                           37XV550P/550PR            LGD                 0x81             0x66

                           42XV550P/550PR            LGD                 0x81             0x67

                           46XV550P/550PR            SAMSUNG             0x86             0x4A

                           52XV550P/550PR            SAMSUNG             0x86             0x4B


   OP4

   Ex. OPT4 value 0x86 indicates that panel vendor is SAMSUNG.

                                                                  OPT4

                                  D7       D6       D5       D4       D3         D2       D1        D0
                                 (bit7)   (bit6)   (bit5)   (bit4)   (bit3)     (bit2)   (bit1)    (bit0)
    Panel vendor     LGD           -        -        -        -          0        0        0         1

                     SHARP         -        -        -        -          0        0        1         0

                     CMO           -        -        -        -          0        0        1         1

                     AUO PMVA      -        -        -        -          0        1        0         0

                     AUO AMVA      -        -        -        -          0        1        0         1

                     SAMSUNG       -        -        -        -          0        1        1         0

                     IPS           -        -        -        -          0        1        1         1

    Panel            Full HD       1        -        -        -          -        -        -         -
    Resolution       WXGA          0        -        -        -          -        -        -         -




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   OP5

   Ex. OPT5 value 0x45 indicates that panel size is 32.

                                                                               OPT5

                                    D7           D6           D5           D4     D3       D2       D1        D0
                                   (bit7)       (bit6)       (bit5)    (bit4)    (bit3)   (bit2)   (bit1)    (bit0)
    Size           26                -            -            -           -          0     0        1         1

                   32                -            -            -           -          0     1        0         1

                   37                -            -            -           -          0     1        1         0

                   42                -            -            -           -          0     1        1         1

                   46                -            -            -           -          1     0        1         0

                   52                -            -            -           -          1     0        1         1

    Backlight      Positive          -            -            1           -          -     -        -         -
    Status Logic   Negative                                    0

    Backlight      Execute           -            1            -           -          -     -        -         -
    Status Check   Unexecuted                     0




   Convert from Bit (Binary) to Hex

   The table for converting from bit (D7-D0) to hex (0x**).

                                         BIT (Binary)

    High nibble               D7          D6             D5           D4
    Low nibble                D3          D2             D1           D0
    HEX             0         0             0            0            0

                    1         0             0            0            1

                    2         0             0            1            0

                    3         0             0            1            1

                    4         0             1            0            0

                    5         0             1            0            1

                    6         0             1            1            0




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                    7            0       1          1         1

                    8            1       0          0         0

                    9            1       0          0         1

                    A            1       0          1         0

                    B            1       0          1         1

                    C            1       1          0         0

                    D            1       1          0         1

                    E            1       1          1         0

                    F            1       1          1         1


   E.g. If Bit D7-0 = 0101 1010, Hex data is 0x5A.




   Exit from Service Mode

   Pressing POWER button to turn off the TV once.




   Initialization of Memory Data of QA02 and Setting Data of Signal Unit

   After replacing QA02 or signal board, the following initialization is required.


    CAUTION: Never attempt to initialize the data unless QA02 has been
    replaced.
    Whenever using new signal board to the set, setting the Model ID data
    according to Panel option data.



    1) Enter the service mode.

    2) Select menu of ID by pressing P       or P       during display of adjustment menu in the
       service mode.

    3) Change ID data into MODEL ID to initialize by pressing             + or     -, refer to table
       below.



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    4) Press and hold the CALL button on the remote control, then press the CHANNEL
          button on the TV.

    5) Initialization progress dialog including model name and panel vendor is shown.
       Progress status is "WRITING".


    6) Progress status is changed "OK" and power cycle (automatically). Then QA02
       initialization has been completed.

    7) Enter the service mode and select version check mode. Confirm if model name and
       model id set is correct. If not, repeat steps 1) to 6).
       Note:
       In case initialization by setting wrong MODEL ID is done, there is a possibility of
       abnormal display.


    8) Set I2C check function of TVOP to enable.


    9) Check the picture carefully. If necessary, adjust any adjustment item above.
       Perform "Auto tune" on the owner's manual.

    MODEL ID (HEX)           Model name           Panel vendor
    0x01                32XV555D/553D/556D SAMSUNG

    0x02                37XV555D/553D/556D LGD

    0x03                42XV555D/553D/556D LGD

    0x04                46XV555D                  SAMSUNG

    0x05                52XV555D                  SAMSUNG

    0x06                32XV550P/550PR            SAMSUNG

    0x07                37XV550P/550PR            LGD

    0x08                42XV550P/550PR            LGD

    0x09                46XV550P/550PR            SAMSUNG

    0x10                52XV550P/550PR            SAMSUNG

    0x11

    0x12

    0x13

    0x14

    0x15




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    0x16

    0x17

    0x18

    0x19

    0x20

    0x21

    0x22

    0x23

    0x24

    0x25

    0x26

    0x27

    0x28

    0x29

    0x30

    0x31

    0x32

    0x33




   Initializing Data setting flowchart after replacing the Signal Unit



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   Test Signal Selection




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   Every pressing of     button on the remote control changes the built-in test patterns on
   screen as described below in Service Mode.




        Picture           Signal



                       Red raster




                       Green raster




                       Blue raster




                       All Black




                       All White




   Self Diagnostic Function

     1. Press "9" button on remote control during display of adjustment menu in the service
        mode. The diagnosis will begin to check if interface among IC's is executed properly.

     2. During diagnosis, the following displays are shown.

   * Self check display and Item are subject to the models.



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   (1) Firmware :
       Version information of microprocessor
       Series name (AAAA) and market area (BB) and software program version (0000)
   (2) Time : Total hour of turn the TV on. (Unit : H)
   (3) BL_STATUS :
       Counter for saving BackLight on error.
       This value is counted till 99 (Decimal).
   (4) Bus line : -- "OK" is normal
       SCL-GND (Red indication) : SCL-GND short circuit
       SDA-GND (Red indication) : SDA-GND short circuit
       SCL-SDA (Red indication) : SCL-SDA short circuit
   (5) Bus cont : --- "OK" is normal.
                      NG is abnormal (Red indication).
                      When the abnormal status is detected, type name of semiconductor is
                      indicated in red colour.
   (6) Block
       UV       : TV reception mode
       V1 - V9 : VIDEO 1-9 input mode
       PC      : PC mode
       YUV : YUV mode
       DTV      : DTV mode

        UV          ATV
                       1
        V1
               (SCART (FULL))

                        2




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        V2    (SCART (S+AV))
                      3
        V3
                (Component)
                      4
        V4
                (Composite)

        V5         HDMI1

        V6         HDMI2

        V7           --

        V8           --

        V9           --

        PC           --

        YUV          --

        DTV DTV (Digital Only)




   Version Check Mode

     1. Press "9" button twice on remote control during display of adjustment menu in the
        service mode.
        The version of main MPU will be checked.

     2. During Version Check, the following displays are shown.

   * Version check display and Item are subject to the models.



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     (1) MAIN MPU :
         Version information of microprocessor
        Series name and Code Program Version (4 figure number) and OSD Version (2 figure
        number).
     (2) EEPROM :
         Version information of EEPROM : Display 1 byte data.
     (3) SUB MPU :
        Version information of SUB MPU : Display 1 byte data.
     (4) OPTION :
         Option information : Display six numbers of 1 byte data.
     (5) HDMI ID :
         HDMI ID information : Display 4 byte data.
     (6) SW Ver
         Version information of DB software as Toshiba release. (Only digital model.)
     (7) MW Ver
         Left side is Application and UI version information of DB software. (Only digital
        model.)
        Right side is Firmware (Driver) version information of DB software. (Only digital
        model.)




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     (8) A/D Adjust
        A/D adjustment item.
        --MAIN : It's enable only in double Window model. A/D adjustment status of main
                 picture.
        --SUB : It's enable only in double Window model. A/D adjustment status of sub
                 picture.
        --COMP : Component input
        --PC   : PC input
        --NTSC : NTSC (60 Hz) SD signal (composite input).
        --PAL     : PAL (50 Hz) SD signal (composite input).
        --OK      : A/D adjustment set correctly.
        --NG      : A/D adjustment set incorrect.
        --        : A/D adjustment is not needed. Because its picture format isn't used.
     (9) 100 Hz FPGA Software Version
         It's enable only in 100 Hz drive panel model.
   (10) Memory Data Version
        Version information of EEPROM.
        DRMA**** means model number of EEPROM.
        REV** means version of EEPROM.
   (11) CD number
        CD information (ascii code). : Display 4 byte data.
   (12) Model Name
        Model name information (ascii code). : Display 7 byte data.
   (13) LCD Panel Vendor information display
        The following Panel Vender (DDD) and screen size (00) and resolution (EEE) are
        displayed.
        Example : AUO-32 (1080p) indicates that Vender is AUO and Screen Size is 32 inch
        and Full HD panel.




   Status Check Mode

     1. Press "9" button thrice on remote control during display of adjustment menu in the
        service mode.
        The status of this model will be checked.

     2. During Status Check, the following displays are shown.



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   * Status check display and Item are subject to the models.




   (1) MAIN :
       Main source information :
       Display RF position number (0 - 99) on the main screen, or Input Source
       (EXT1/2/3/HDMI etc.)
   (2) MAIN FORMAT :
       Display Video and PC format information
   (3) MAIN PLL :
       Main PLL information : Display 1 byte data at five.
   (4) SUB :
       Sub source information :
       Display RF position number (0 - 99) on the Sub screen, or Input Source
       (EXT1/2/3/HDMI etc.)
       This item displays only Double window model.
   (5) SUB FORMAT :
       Display Video and PC format information
       This item displays only Double window model.
   (6) SUB PLL :
       Sub PLL information : Display 1 byte data at five.
       This item displays only Double window model.
   (7) SCREEN SIZE :
       Display the screen size as follows.
        Exact Scan

        Wide

        Super Live 2




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        Cinema 2

        4:3

        Super Live 1

        Cinema 1

        Subtitle

        14:9


       Note:
       Exact Scan is shown only for 1080p panel model with video input mode except pc.
   (8) OTHER STATUS :
       Other status information : Display three numbers of 2 byte data.




   Setting Hotel Mode

   Enter to service mode and select Hotel Mode menu by pressing P or P .
   After selecting Hotel Mode, press     + to enter details setting in Hotel Mode.

   To select menu, press P or P and press OK to enter the adjustment menu of table bellow.
   To move the cursor in the adjustment, press + or     -.

     1. By pressing P or P          , OPT2 setting will change the value either 1 or 0 on selected
        items as follows;


   OP2

                                                                                              0
      OPT2                 FUNCTION DESCRIPTION                             1
                                                                                          (Normal)
    D7 (bit7)                        - (no use)                             -                 -

    D6 (bit6)      Enable mode that TV On will be appeared in Enable                     Disable
                   forced when turning the main power ON

    D5 (bit5)      FRONT Key                                     Disable                 Enable

    D4 (bit4)      All keys except input selector key            Disable                 Enable
                   (Video/TV)

    D3 (bit3)      User remote control operation                 Disable                 Enable
                                                                 (Service mode and
                                                                 Supere




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                                                                User mode may
                                                                possible to setting
                                                                only)

    D2 (bit2)     Disable SET UP MENU except language.          Disable                   Enable
                  (tuning SETUP MENU)                           (Display the language
                                                                only)

    D1 (bit1)     Disable SETUP MENU                            Disable                   Enable

    D0 (bit0)     HOTEL Mode                                    On (Enable the setting Off
                                                                of D1 from to D7)         (Normal)


   VOLUX

   Set VOLUX as following.

    1) Set speaker volume to 100. (Any value is OK, but 100 is better to check sound level.)

    2) Down value of VOLUX until finding suitable sound volume level.




     VOLUX                 FUNCTION DESCRIPTION                           1             0 (Normal)
    D7 (bit7) ~
                  Max Limiter of Volume Control                  0x00 ~ 0x7F (Normal: 0x7C)
    D0 (bit0)


   OP6

      OPT6                 FUNCTION DESCRIPTION                           1             0 (Normal)
    D7 (bit7)     Enable mode that POS or VIDEO program          Enable               Disable
                  number will be appeared in forced when turn
                  ON the main power

    D6 (bit6) ~ POS or VIDEO program number                      0 ~ 127 [decimal] (Normal: 0)
    D0 (bit0)                                                    POS number: 0 ~ 99
                                                                 VIDEO number: 100 ~ 127
                                                                 (DTV = 100, VIDEO = 101,
                                                                 VIDEO = 102..)
                                                                 100 is used as ATV when
                                                                 DTV option is disable.


   OP7




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      OPT7                 FUNCTION DESCRIPTION                           1         0 (Normal)
    D7 (bit7)     Enable mode that speaker volume will be set    Enable           Disable
                  in forced when turn ON the main power

    D6 (bit6) ~ Forced speaker volume                            0 ~ 100 [decimal] (Normal: 0)
    D0 (bit0)                                                    Value above 100 is no effect.


   OP8

      OPT8                 FUNCTION DESCRIPTION                           1         0 (Normal)
    D7 (bit7) ~                     - (no use)                            -               -
    D3 (bit3)

    D2 (bit2)     Enable mode that picture mode will be set in   Enable           Disable
                  forced when turn ON the main power             (Display the
                                                                 language only)

    D1 (bit1) ~ Forced picture mode                              0 [dec]: Dynamic (mode-1)
    D0 (bit0)                                                    (Normal)
                                                                 1 [dec]: Standard (mode-2)
                                                                 2 [dec]: Mild (mode-3)
                                                                 3 [dec]: Memory (mode-M)




   LED Indication

   The Green and Red LEDs on the TV (at the bottom center of the TV) indicate the TV's
   status, as described below.

         Red ON (solid) and Green OFF = The TV power cord is plugged in.




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      FUNCTION AND OPERATION


   The Remote Control

   Simple at-a-glance reference of your remote control.




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      FUNCTION AND OPERATION


   Controls and Input Connections

   A wide variety of external equipment can be connected to the input sockets on the side of the
   television.Whilst all the necessary adjustments and controls for the television are made using
   the remote control, the buttons on the television may be used for some functions.




   Switching On




   Using the Remote Control




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   Using the Controls and Connections




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      FUNCTION AND OPERATION


   Tuning the Television

   Before switching on the television put your decoder and media recorder to Standby if they
   are connected.


   Quick Setup




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   Manual Tune



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   Programme Skip




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   Using Auto Tuning




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                                                                                . 10  10




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Handling the LCD Module                                                                      . 1  4




      SAFETY INSTRUCTION


   Handling the LCD Module

   Safety Precaution

   In the event that the screen is damaged or the liquid crystal (fluid) leaks, do not breathe in or
   drink this fluid.
   Also, never touch this fluid. Such actions could cause toxicity or skin irritation. If this fluid
   should enter the mouth, rinse the mouth thoroughly with water. If the fluid should contact the
   skin or clothing, wipe off with alcohol, etc., and rinse thoroughly with water. If the fluid
   should enter the eyes, immediately rinse the eyes thoroughly with running water.


   Precautions for Handling the LCD Module


    CAUTION: The metal edges of the LCD module are sharp, handle it with
    care.


   The LCD module can easily be damaged during disassembly or reassembly; therefore,
   always observe the following precautions when handling the module.




     1. When attaching the LCD module to the LCD cover, position it appropriately and fasten
        at the position where the display can be viewed most conveniently.




     2. Carefully align the holes at all four corners of the LCD module with the corresponding
         holes in the LCD cover and fasten with screws. Do not strongly push on the module
         because any impact can adversely affect the performance. Also use caution when
         handling the polarized screen because it can easily be damaged.




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Handling the LCD Module                                                                    . 2  4




     3. If the panel surface becomes soiled, wipe with cotton or a soft cloth. If this does not
        remove the soiling, breathe on the surface and then wipe again.
        If the panel surface is extremely solied, use a CRT cleaner as a cleaner. Wipe off the
        panel surface by drop the cleaner on the cloth. Do not drop the cleaner on the panel.
        Pay attention not to scratch the panel surface.




     4. Leaving water or other fluids on the panel screen for an extended period of time can
        result in discoloration or stripes. Immediately remove any type of fluid from the screen.




     5. Glass is used in the panel, so do not drop or strike with hard objects. Such actions can
        damage the panel.




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Handling the LCD Module                                                                     . 3  4




     6. CMOS-LSI circuitry is used in the LCD module, so avoid damage due to static
        electricity. When handling the module, use a wrist ground or anchor ground.




     7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an
        extended period of time.




     8. Do not store the LCD module below the temperature conditions described in the
        specifications. Failure to do so could result in freezing of the liquid crystal due to cold
        air or loss of resilience or other damage.




     9. Do not disassemble the LCD module. Such actions could result in improper operation.




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Handling the LCD Module                                                                 . 4  4




    10. When transporting the LCD module, do not use packing containing epoxy resin
        (amine) or silicon resin (alcohol or oxim). The gas generated by these materials can
        cause loss of polarity.




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                                                                                           . 1  1




      PANEL IDENTIFICATION


   Panel Identification

   If the several panels are alternatively used in the same model without amending the model
   name, the identification marking will be shown at the last digit of the set serial number on the
   specification label on the back cover.

   In servicing, do not alter the panel because several setting and parts are different.

     Marking      Panel Vendor      Marking      Panel Vendor       Marking      Panel Vendor

          A     AUO                     J                               S      SHARP

          B                             K      SAMSUNG                  T

          C     CMO                     L      LGD                      U

          D                             M                               V

          E                             N                               W

          F                             P                               X

          G                             Q                               Y

          H     IPS                     R                               Z




   With this alternative use, some of key parts may differ and their combinations are
   indicated with the suffix marking on the location number in the part list
   (Miscellaneous).

   e.g.

          Location No.          Part No.                  Description

    B001A                   75007869          LCD Panel, 32" LGD

    B001B                   75007870          LCD Panel, 32" AUO

    MZ01A                   75006036          LDVS Cable

    MZ01B                   75007893          LDVS Cable




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U06A
KEY




              U05A
                           POWER
          MAIN (ANALOG)




                                      U03A
                                     AC SW




       U04A LED           U04B RMT
                                                                                             . 1  4




      SAFETY INSTRUCTION

    WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY
    PRECAUTION" AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW.



   Safety Precaution


    WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE
    UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER.
    THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED
    BEFORE SERVICING THIS CHASSIS.




     1. An isolation transformer should be connected in the power line between the receiver
        and the AC line before any service is performed on the receiver.



     2. Always disconnect the power plug before any disassembling of the product. It may
        result in electrical shock.



     3. When replacing a chassis in the cabinet, always be certain that all the protective
        devices are put back in place, such as nonmetallic control knobs, insulating covers,
        shields, isolation resistor-capacitor network, etc.



     4. Always keep tools, components of the product, etc away from the children, These items
        may cause injury to children.



     5. Depending on the model, use an isolation transformer or wear suitable gloves when
        servicing with the power on, and disconnect the power plug to avoid electrical shock
        when replacing parts. In some cases, alternating current is also impressed in the
        chassis, so electrical shock is possible if the chassis is contacted with the power on.



     6. Always use the replacement parts specified for the particular model when making
        repairs. The parts used in products require special safety characteristics such as




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                                                                                          . 2  4




        inflammability, voltage resistance, etc. therefore, use only replacement parts that have
        these same characteristics. Use only the specified parts when the mark is indicated
        in the circuit diagram or parts list.



     7. Parts mounting and routing dressing of wirings should be the same as that used
        originally. For safety purposes, insulating materials such as isolation tube or tape are
        sometimes used and printed circuit boards are sometimes mounted floating. Also make
        sure that wirings is routed and clamped to avoid parts that generate heat and which use
        high voltage. Always follow the manufactured wiring routes / dressings.



     8. Always ensure that all internal wirings are in accordance before re-assembling the
        external casing after a repairing completed. Do not allow internal wiring to be pinched
        by cabinets, panels, etc. Any error in reassembly or wiring can result in electrical
        leakage, flame, etc., and may be hazardous.



     9. NEVER remodel the product in any way. Remodeling can result in improper operation,
        malfunction, or electrical leakage and flame, which may be hazardous.



    10. Touch current check. (After completing the work, measure touch current to prevent an
        electric shock.)

           Plug the AC cord directly into the AC outlet. Do NOT use an isolation transformer
           for this check.

           Connect a measuring network for touch currents between each exposed metallic part
           on the set and a good earth ground such as a water pipe.




                                                 Annex D
                                                (normative)

                               Measuring network for TOUCH CURRENTS




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                                                                                                       . 3  4




            Resistance values in orms ( ).



            V: Voltmeter or oscilloscope
                 (r.m.s. or peak reading)

                     Input resistance :  1M
                     Input capacitance :  200 pF
                     Frequency range : 15 Hz to 1 MHz and d.c. respectively

            Note: Appropriate measures should be taken to obtain the correct value in case of non
            sinusoidal waveforms.

            The measuring instrument is calibrated by comparing the frequency factor of          with the
            solid line in figure F.2 of IEC 60990 at various frequencies. A calibration curve is
            constructed showing the deviation of       from the ideal curve as a function of frequency.

            TOUCH CURRENT =                  /500 (peak value).




           The potential at any point (TOUCH CURRENT) expressed as voltage                       and
           does not exceed the following value:



            The part or contact of a TERMINAL is not HAZARDOUS LIVE if:

            a) The open-circuit voltage should not exceed 35 V (peak) a.c. or 60 V d.c. or, if a) is not
               met.
            b) The measurement of the TOUCH CURRENT shall be carried out in accordance with
               IEC 60990, with the measuring network described in Annex D of this standard.

                The TOUCH CURRENT expressed as voltages        and           , does not exceed the
                following values:
                - for a.c. :  = 35 V (peak) and = 0.35 V (peak);
                - for d.c. :  = 1.0 V

            Note: The limit values of   = 0.35 V (peak) for a.c. and       = 1.0 V for d.c. correspond to
            the values 0.7 mA (peak) a.c. and 2.0 mA d.c.




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                                                                                          . 4  4




   Product Safety Notice

   Many electrical and mechanical parts in this chassis have special safety-related
   characteristics. These characteristics are often passed unnoticed by a visual inspection and
   the protection afforded by them cannot necessarily be obtained by using replacement
   components rated for higher voltage, wattage, etc. Replacement parts which have these
   special safety characteristics are identified in this manual and its supplements; electrical
   components having such features are identified by the international hazard symbols on the
   schematic diagram and the parts list.
   Before replacing any of these components, read the parts list in this manual carefully. The
   use of substitute replacement parts which do not have the same safety characteristics as
   specified in the parts list may create electrical shock, fire, or other hazards.




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                                                                                  . 1  2




      SPECIFICATION




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                                                                                  . 2  2




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                                   MAIN BOARD




REMOTE
RECEIVER

OPTICAL
SENSOR




                                                                                                                                                                                                                                                               LCD
                                                                                                                                                                                                    DDRII RAM*2                                               PANEL

                              RF                              TIF                          I2C                                               FLI32626
                                                                                                                                            Sequoia
                                                                          ATV(V)
                                                                                                                                                             VBI Data
                                                                                                                                                             Processor                                           OSD
                                       CVBS                         Non                                                                                                                                                                            TCON
                                       R/G/B/FB                                                                                                                                                                                                   PANEL I/F
                              EXT1
                                      LR                                                                                                                       Video
                              (SCART)                                                                                                           Analog
                                      TVOUT V                                  75ohm                                                             Front        Decoder
                                       TVOUT L/R                               Driver                                                            End
                                                                                        CVBS/RGBFB/SY/SC/(Y/Cb/Cr) or (RGBHV)                  (16port)                                        DCDi
                                                                                                                                                                                               MADi              BEP         LVDS
                                       CVBS/S(Y/C)                                                                                                                                            Scaling
                                                                                                                                                                                 MUX
                                      LR                              75ohm
                              EXT2
                                                                      Driver
                              (SCART) TVOUT V
                                                                                                                                                Digital
                                       TVOUT L/R                                                                                  656
                                                                                                                                               Input A                                                                                      I2C
                                                                            Standby
                                                                                                                                                                                                                                                    EEPROM
                                                                             uCON                                                                HDMI



                              EXT3     Y/Cb/Cr                                                                                                               Audio       Audio                                                  GPIO
                                                                                                                                                ADC
                              (REAR)                                                                                                                          Mux        DSP                                      Micro-
                                       L/R
                                                                                                                                                                                         Low                    processor
                                                                                                                                                                                                 IR I/F
                                                                                                                                                                I2S         DAC          Power                                  ADC
                              EXT7                                                                                                                             SPDIF                     Monitor
                                       R/G/B/H/V
                              PC

                              PC/HDMI L/R                                                                                               YCbCr 16bit
                                                                                                                                         AMP
                                                                                                                                                                                                                               SPI SERIAL
                                                                                                                                                                     I2C
                                                                                                                                                                                                                               FLASH ROM


                              AUDIO
                                       L/R
                                                              SIF




                              OUT
                                                                                                            KEY            HDMI
                                                                                            Bt601 8Bit      ROM            SCL/SDA                                           Sequoia
                                                              MTS+                          HD,VD,CLK                                                                        Regulator
                                                              APRO                                                  SW                                                            UART
                                                              MSP                           REQ
                                                                                                                                                                                       5V2D

                                                                                                                                                                                 5V2    32V    9V       VCC AUDIO
                                                                                                         EDID              EDID                       EDID
                                                                                                                           ROM                        ROM            5V1
                                                                                                         ROM
                                                                                                                                                                                         LOWB Regulator
                                                     HP AMP         AUDIO AMP                                                                                                                                                12V_ LCD

                                                                                                                                                                                  12V                      18V AUDIO

                                                                                                 EXT4              EXT5                   EXT6
                                                                                                                                                                           P811B                        P811C                       P810B
                                                                                                 HDMI1             HDMI2                HDMI
                                                                                                                                          HDMI3
EXT3    CVBS/S(Y/C)
(FRONT) L/R

Headphone (L/R)
                                                                                                                                                                                                                                                                 24V



TACT
KEY



                                                                                                  POWER BOARD
                  SPEAKER (L/R)                                                                                                                                                                           18V_AUDIO             12V_LCD
                                                                                                                                             Standby           5V1                12V
                                                                                                                                             POWER
                                                                                                                                                                                                                            12V_LCD
                                                                                                                                                                                                                              REG
                                                                                                                        PFC
                                                                                                    AC INPUT
                                                                                                                      CIRCUIT
                                                                                                                                                HIC                  CONVERTER                      24V
                                                                                                                                                                       TRANS
                                                                                          . 1  2




      SCHEMATIC DIAGRAM


   Precaution


    WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "X-RAY
    RADIATION PRECAUTION" FOR DIRECT VIEW CTV ONLY, "SAFETY
    PRECAUTION" AND "PRODUCT SAFETY NOTICE" OF THIS MANUAL.


    CAUTION: The international hazard symbols " " in the schematic diagram
    and the parts list designate components which have special characteristics
    important for safety and should be replaced only with types identical to
    those in the original circuit or specified in the parts list.

    The mounting position of replacements is to be identical with originals.
    Before replacing any of these components, read carefully the SAFETY
    PRECAUTION and PRODUCT SAFETY NOTICE.

    Do not degrade the safety of the receiver through improper servicing.




   Note:

     1. RESISTOR
        Resistance is shown in ohm [K=1,000, M=1,000,000]. All resistors are 1/6 W and 5 %
        tolerance carbon resistor, unless otherwise noted as the following marks.

           1/2R : Metal or Metal oxide of 1/2 watt
           1/2S : Carbon composition of 1/2 watt
           1RF    :   Fuse resistor of 1 watt
           10 W   :   Cement of 10 watt
           K      :   



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