Service Manuals, User Guides, Schematic Diagrams or docs for : TOSHIBA LCD 40RF350U VER.2.01 toshiba_40rf350u_ver.2.01_sm

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                                                                           . 1  1




                                LCD Color Television

                     40RF350U                                  Ver. 2.01




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ADJUSTMENT [LCD Color Television] USA                                      . 1  8




     ADJUSTMENT


   Service Mode

   Entering to Service Mode




                                    1. Set VOLUME to minimum and press MUTE
                                       button twice on Control.




                  



                                    2. Press MUTE button again and hold button
                                       down.




                  


         Service Mode display

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




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   Key Function in the Service Mode

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

   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 remote control)

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

   "RCUT" selection                    1 button

   "GCUT" selection                    2 button

   "BCUT" selection                    3 button

   "CNTX" selection                    4 button

   "COLC" selection                    5 button

   "UVTT" selection                    6 button

   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:

   (1) The image system data may be different for each image format chosen. The factory
       preset data value is indicated in the table.




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ADJUSTMENT [LCD Color Television] USA                                                . 3  8




       (a) Seine3 CR Data RF350U : DRMA0579 Rev00 (VX4A00019000)
       (b) TV-MICRO EEPROM Data : DRMA0588 Rev00 (VX4A00019300)
   (2) Prior to changing any board containing an EEPROM IC, the exisiting data in each image
       format should be copied down as a precautionary measure.




                                                           Data
     Item             Name of adjustment
                                                   40RF350 46RF350

   R-CUT R CUTOFF                                  00H       00H       (a)

   G-CUT G CUTOFF                                  00H       00H       (a)

   B-CUT B CUTOFF                                  00H       00H       (a)

   R-DRV R DRIVE                                   64H       64H       (a)

   G-DRV G DRIVE                                   64H       64H       (a)

   B-DRV B DRIVE                                   64H       64H       (a)

   *BRTC BRIGHTNESS CENTER                         80H       80H       (a)

   *COLC COLOR CENTER                              7DH       7DH       (a)

   *UVTT BASE BAND TINT                            7EH       7EH       (a)

   *CNTX CONTRAST MAX                              7FH       7FH       (a)

    SHRC SHARPNESS CENTER                          60H       60H       (a)

    VBIS    VBI Setting                            64H       64H       (a)

     CC     Closed Caption                         64H       64H       (a)

     ID1    VBID                                   64H       64H       (a)

     GG     Gemstar                                00H       00H       (a)

    PHDT HPD TIME                                  09H       09H       (a)

    OPT1 TV SET OPTION 1                           00H       00H       (b)

    OPT2 TV SET OPTION 2                           00H       00H       (b)




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    OPT3 TV SET OPTION 3                        60H   60H   (b)

    OPT4 TV SET OPTION 4                        6EH   6AH   (b)

    OPT5 TV SET OPTION 5                        01H   01H   (b)

   SET-ID MODEL ID                              *1    *1    (b)

   MAGC AGC of MTS decoder                      00H   00H   (b)

    V01   Volume1 Data                          53H   53H   (b)

    V25   Volume25 Data                         A1H   A1H   (b)

    V50   Volume50 Data                         D3H   D3H   (b)

    V75   Volume75 Data                         EDH   EDH   (b)

    V100 Volume100 Data                         F3H   F3H   (b)

   VOLBS Correction Volume at DTV               00H   00H   (b)

   VOLST Correction Volume at Stereo/SAP of ATV 00H   00H   (b)

    EVOL Reduce Volume For Bassboost (Nonuse) 00H     00H   (b)

    VOLX Volume Limiter For Hotel               64H   64H   (b)

    BASX Bass Max Data                          19H   19H   (b)

    TREX Treble Max Data                        19H   19H   (b)

   TONN Tone Min Data                           08H   08H   (b)

    BASC Bass center Data                       01H   FEH   (b)

    TREC Treble center Data                     02H   02H   (b)

    EBAS Add Bass on FOCUS                      01H   03H   (b)

    ETRE Add Treble on FOCUS                    FEH   01H   (b)

   WON2 Bass Reducer                            0AH   0AH   (b)

    ALS   ALS point                             00H   00H   (b)

    ALOF Reduce in ALL (wow, TruSurround) off   00H   00H   (b)

    VSTB Reduce Volume For Stable Sound         00H   00H   (b)

    VS3D Reduce Volume For SRS3D                00H   00H   (b)

    VFCS Reduce Volume For FOCUS                04H   02H   (b)

    VTBH Reduce Volume For TruBass High         00H   00H   (b)

    VTBL Reduce Volume For TruBass Low          00H   00H   (b)

    VVDD Reduce Volume For Dolby                F3H   F3H   (b)

   WFCS FOCUS Level                             02H   01H   (b)

   WWSP SRS 3D Level                            02H   02H   (b)




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ADJUSTMENT [LCD Color Television] USA                                                     . 5  8




    WTBH TruBass High Level                             02H          02H   (b)

    WTBL TruBass Low Level                              01H          01H   (b)

    VOLM Volume coefficient at 1/2 Mute                 32H          32H   (b)


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

   Note: (*1) SET-ID data is subject to the models.
   Refer to Setting Panel Option Data and SET-ID Data for detail.




   Adjusting the Data

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




   Setting Panel Option Data and SET-ID Data

     1. Panel option data is subject to OP4 and OP5.
        Enter to service mode and select menu of OP4 or OP5 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.

     2. Whenever using new AV-TN board to the set, set the SET-ID data according to panel
        option data.

                            Panel Maker                       OPT4
      Set    Size                                                          OPT3 OPT5 SET-ID
                      TOP      Running change TOP Running change
   RF350U 40 SAMSUNG                    -         6Eh            -         60h     01h     BAh
   RF350U 46 SAMSUNG                    -         6Ah            -         60h     01h     BBh




   Exit from Service Mode

   Pressing POWER button to turn off the TV once.




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ADJUSTMENT [LCD Color Television] USA                                                  . 6  8




   Self Diagnostic Function

    1. Press "Recall" button on Remote Control during display of adjustment menu in the
       service mode. This will bring up the "S" in the right corner of screen. Now press "9"
       button on remote.
       The diagnosis will begin to check if interface among IC's is executed properly.

    2. During diagnosis, the following displays are shown.




    (1) Version information of TV-MICRO                : Display 1 byte data.
    (2) Version information of TV-MICRO EEPROP         : Display 1 byte data.
    (3) Version information of DVD MPU                 : HL series not used.
    (4) Revision of image file                         : LCD Model not used.
    (5) Total brightness hour of TV.                   : Display 4 bytes data.
    (6) Operation hour of TV in LOW mode               : Display 4 bytes data.
    (7) Operation hour of TV in HIGH BRIGHT mode       : LCD Model not used.
    (8) Number of times of TV ON/OFF.                  : LCD Model not used.
    (9) Temperature display of thermo-Sensor. (DMD) : LCD Model not used.
   (10) Temperature display of thermo-Sensor. (LAMP) : LCD Model not used.
   (11) DMD Engine System status                       : LCD Model not used.
   (12) TV-MICRO System status                         : Not used
   (13) IIC-BUS status




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ADJUSTMENT [LCD Color Television] USA                                                  . 7  8




        Bus line normal is "None" displayed.
        When it is abnormal, the block name is displayed as follows.
        "SCL-GND" (Red indication) : SCL-GND short circuit
        "SDA-GND" (Red indication) : SDA-GND short circuit
        "SCL-SDA" (Red indication) : SCL-SDA short circuit
        "NG : MTS"
        "NG : APRO"
        "NG : AVSW"




   LED Indication

   The green and yellow LED lights on the TV (at the bottom center of the TV) indicate the
   TV's status, as described below:




       LED Indication                  Condition
    1 Blue, Green and Yellow are off. Power supply OFF. (AC)

    2 Blue, Green and Yellow are off. Power supply OFF. (Stand by)

    3 Blue is on (solid).              The TV is operating properly.

    4 Yellow is on (solid).            Power-On Mode set into the quick operation.
                                       The power is supplied to Digital Board only.

    5 Green blinks slowly.             Abnormal operation of BUS line.
                                       Turn the TV off and unplug the power cord, then plug
                                       the power cord in again and turn the TV on.

    6 Green blinks quickly.            Power Protection Detection.
                                       Turn the TV off and unplug the power cord, then plug
                                       the power cord in again and turn the TV on.

    7 Yellew blinks 3 times.           The TV is rebooting.




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ADJUSTMENT [LCD Color Television] USA                                            . 8  8




                               Wait several seconds until the yellow LED stops
                               blinking.

    8 Green is on (solid).     Upgrading in progress.
      Yellow is on (solid).

    9 Green is on (solid).     Upgrading succesful.
      Yellow is off.

   10 Green is off.            Upgrading failed.
      Yellow is on (solid).




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                                                                        . 1  2




    FUNCTION AND OPERATION


  TV Front and Side Panel Controls and Connections




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     FUNCTION AND OPERATION


   Learning about the Remote Control




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     FUNCTION AND OPERATION


   Programming Channels into the TV's Channel Memory




   Programming Channels Automatically




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   Manually Adding and Deleting Channels in the Channel Memory




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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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     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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     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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      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      LPL                      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" LPL

   B001B                    75007870          LCD Panel, 32" AUO

   MZ01A                    75006036          LDVS Cable

   MZ01B                    75007893          LDVS Cable




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                        U02A
                       LOW-B

U03D
 Key


                                                 U01A
                                                POWER

                        U03A
                       AV TERM     U04A
 U03B
                                   Digital
FRONT-
  AV




            U03C                     U03E
         LED/IR-PATH             ILLUMINATION
                                                                                            . 1  3




     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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       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. Always perform an AC leakage current checking on the exposed metallic parts of the
       cabinet such as antennas, terminals, screw heads, metal overlays, control shafts and etc.
       to be sure that the set is safe to operate without any dangerous of electrical shocks
       before returning the set to the customer.



   11. The leakage current checking. (After completing the work, measure the leakage current
       to prevent an electrical shock.)

       Plug the AC line cord directly into a 120V AC outlet. Do not use an isolation
       transformer for this check.

       Use an AC voltmeter having 5000 ohms per volt or more sensitivity in the following
       manner.

        Connect a 1500 ohm 10 watt resistor, paralleled by a 0.15 F, AC type capacitor,
        between a known good earth ground (water pipe, conduit, etc.) and the exposed
        metallic parts, one at a time. Measure the AC voltage across the combination of 1500
        ohm resistor and 0.15 F capacitor. Reverse the AC plug at the AC outlet and repeat
        AC voltage measurements for each exposed metallic part. Voltage measured must not
        exceed 0.3 volts rms. This corresponds to 0.2 milliamp. AC. Any value exceeding this



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         limit constitutes a potential shock hazard and must be corrected immediately.




   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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  SPECIFICATION




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Acceptable signal formats for PC IN and HDMI terminals




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     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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