Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung LCD TV GBD26KS chassis LA26R71B LCD TV SM samsung_gbd26ks_chassis_la26r71b_lcd_tv_sm_149

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              TFT-LCD TV
              Chassis                     Model
              GBD26KS                     LA26R71B
              GBD32KS                     LA32R71B
              GBD40KS                     LA40R71B




SERVICE                  Manual

 TFT-LCD TV                     Feature
                - Luxurious Slim Design

                - Supreme Picture Quality

                - Supreme Sound Quality

                - Supreme Convenience Quality

                - Convenience for Users
                                            Samsung Electronics Co.,Ltd.
- This Service Manual is a property of      416, Maetan-3Dong, Yeongtong-Gu, Suwon City,
  Samsung Electronics Co., Ltd.             Gyeonggi-Do, Korea, 443-742
  Any unauthorized use of Manual can be     Printed in Korea
  punished under applicable International   P/N : BN82-00139H-00
  and/or domestic law.                      URL : http://itself.sec.samsung.co.kr/
                                                                                                                     1 Precautions


1 Precautions
Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock.

1-1 Safety Precautions


1-1-1 Warnings
1.   For continued safety, do not attempt to modify the
     circuit board.
2.   Disconnect the AC power and DC Power Jack before
     servicing.
1-1-2 Servicing the LCD Monitor
1.   When servicing the LCD Monitor Disconnect the AC
     line cord from the AC outlet.
2.   It is essential that service technicians have an accurate
     voltage meter available at all times. Check the
     calibration of this meter periodically.

1-1-3 Fire and Shock Hazard
Before returning the monitor to the user, perform the                        Figure 1-1. Leakage Current Test Circuit
following safety checks:
1.   Inspect each lead dress to make certain that the leads
     are not pinched or that hardware is not lodged between
                                                                       1-1-4 Product Safety Notices
     the chassis and other metal parts in the monitor.                 Some electrical and mechanical parts have special
2.   Inspect all protective devices such as nonmetallic                safety-related characteristics which are often not evident
     control knobs, insulating materials, cabinet backs,               from visual inspection. The protection they give may not
     adjustment and compartment covers or shields,                     be obtained by replacing them with components rated for
     isolation resistor-capacitor networks, mechanical                 higher voltage, wattage, etc. Parts that have special safety
     insulators, etc.                                                  characteristics are identified by     on schematics and parts
                                                                       lists. A substitute replacement that does not have the same
3.   Leakage Current Hot Check (Figure 1-1):                           safety characteristics as the recommended replacement part
     WARNING: Do not use an isolation                                  might create shock, fire and/or other hazards. Product
                    transformer during                                 safety is under review continuously and new instructions
                    this test.                                         are issued whenever appropriate.
     Use a leakage current tester or a metering system that
     complies with American National Standards Institute
     (ANSI C101.1, Leakage Current for Appliances), and
     Underwriters Laboratories (UL Publication UL1410,
     59.7).




                                                                                                                                   1-1
1 Precautions

1-2 Servicing Precautions
WARNING:           An electrolytic capacitor installed with the wrong polarity might explode.
Caution:           Before servicing units covered by this service manual, read and follow the Safety
                   Precautions section of this manual.
Note:              If unforeseen circumstances create conflict between the following servicing precautions and any of the safety
                   precautions, always follow the safety precautions.



1-2-1 General Servicing                                             4.   Check the insulation between the blades of the AC
                                                                         plug and accessible conductive parts (examples: metal
                                                                         panels, input terminals and earphone jacks).
      Precautions                                                   5.   Insulation Checking Procedure: Disconnect the power
1.    Always unplug the unit s AC power cord from the AC                 cord from the AC source and turn the power switch
      power source and disconnect the DC Power Jack                      ON. Connect an insulation resistance meter (500 V) to
      before attempting to:                                              the blades of the AC plug.
      (a) remove or reinstall any component or assembly, (b)             The insulation resistance between each blade of the
      disconnect PCB plugs or connectors, (c) connect a test             AC plug and accessible conductive parts (see above)
      component in parallel with an electrolytic capacitor.              should be greater than 1 megohm.
2.    Some components are raised above the printed circuit          6.   Always connect a test instrument s ground lead to the
      board for safety. An insulation tube or tape is                    instrument chassis ground before connecting the
      sometimes used. The internal wiring is sometimes                   positive lead; always remove the instrument s ground
      clamped to prevent contact with thermally hot                      lead last.
      components. Reinstall all such elements to their
      original position.
3.    After servicing, always check that the screws,
      components and wiring have been correctly
      reinstalled. Make sure that the area around the
      serviced part has not been damaged.

1-3 Static Electricity Precautions
Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly called
Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some field-effect transistors.
The following techniques will reduce the incidence of component damage caused by static electricity.



                                                                    6.   Do not remove a replacement ESD from its protective
1.    Immediately before handling any semiconductor                      package until you are ready to install it. Most
      components or assemblies, drain the electrostatic                  replacement ESDs are packaged with leads that are
      charge from your body by touching a known earth                    electrically shorted together by conductive foam,
      ground. Alternatively, wear a discharging wrist-strap              aluminum foil or other conductive materials.
      device. To avoid a shock hazard, be sure to remove the        7.   Immediately before removing the protective material
      wrist strap before applying power to the monitor.                  from the leads of a replacement ESD, touch the
2.    After removing an ESD-equipped assembly, place it                  protective material to the chassis or circuit assembly
      on a conductive surface such as aluminum foil to                   into which the device will be installed.
      prevent accumulation of an electrostatic charge.                   Caution: Be sure no power is applied to
3.    Do not use freon-propelled chemicals. These can                             the chassis or circuit and
      generate electrical charges sufficient to damage ESDs.                      observe all other safety
4.    Use only a grounded-tip soldering iron to solder or                         precautions.
      desolder ESDs.
                                                                    8.   Minimize body motions when handling unpackaged
5.    Use only an anti-static solder removal device. Some
                                                                         replacement ESDs. Motions such as brushing clothes
      solder removal devices not classified as anti-static
                                                                         together, or lifting your foot from a carpeted floor can
      can generate electrical charges sufficient to damage
                                                                         generate enough static electricity to damage an ESD.
      ESDs.




1-2
                                                                                               1 Precautions

1-4 Installation Precautions
1. For safety reasons, more than two people are         6. Keep the antenna far away from any high-voltage
   required for carrying the product.                      cables and install it firmly. Contact with the high-
                                                           voltage cable or the antenna falling over may
2. Keep the power cord away from any heat emitting         cause fire or electric shock.
   devices, as a melted covering may cause fire or
   electric shock.                                      7. When installing the product, leave enough space
                                                           (10cm) between the product and the wall for
3. Do not place the product in areas with poor             ventilation purposes.
   ventilation such as a bookshelf or closet. The          A rise in temperature within the product may
   increased internal temperature may cause fire.          cause fire.

4. Bend the external antenna cable when connecting
   it to the product. This is a measure to protect it
   from being exposed to moisture. Otherwise, it
   may cause a fire or electric shock.

5. Make sure to turn the power off and unplug the
   power cord from the outlet before repositioning
   the product. Also check the antenna cable or the
   external connectors if they are fully unplugged.
   Damage to the cord may cause fire or electric
   shock.




                                                                                                           1-3
1 Precautions

Memo




1-4
                                                                        3 Alignments and Adjustments


3 Alignments and Adjustments

3-1 Service Instruction
1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation.
   Check the basic characteristics such as height, horizontal and vertical sync.
2. Use the specified test equipment or its equivalent.
3. Correct impedance matching is essential.
4. Avoid overload. Excessive signal from a sweep generator might overload the front-end
   of the TV. When inserting signal markers, do not allow the marker generator to distort
   test result.
5. Connect the TV only to an AC power source with voltage and frequency as specified on
   the backcover nameplate.
6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure
   that the power cord is disconnected before replacing any parts.
7. To protect aganist shock hazard, use an isolation transform.




                                                                                                 3-1
3 Alignments and Adjustments

3-2 How to Access Service Mode
3-2-1 Entering Factory Mode
 1. To enter "Service Mode" Press the remote -control keys in this sequence :
    - If you do not have Factory remote - control




      - If you have Factory remote - control




      - The buttons are active in the service mode.
         1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left
                                      Arrow Right, Menu, Enter, Number Key(0~9)
        2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -,
                                        Menu, TV/VIDEO(Enter)

3-2-2 Panel Check

Specially for LA26,32R7**, You have to check Panel Maker Because of different adjustments as follows.
First of all, Check the label rating!


1) Label Rating File




                                      Panel check




If Panel Mark is "A", Set the factory mode           Panel BOM(Bill of material) : BN07-00247A
indicating as follows.                               Connector between Panel and Power Unit
                                                     : BN39-00603M (300mm)
Panel BOM(Bill of material) : BN07-00289A
Connector between Panel and Power Unit               * Option Byte
: BN39-00603A (250mm)                                1. Gamma "OFF"
                                                     2. Panel Option "AMLCD_INT"
* Option Byte
1. Gamma "AUO"
2. Panel Option "AUO_AMVA"                           Others are same shown below.

If Panel Mark is "S" or not printed.
Set the factory mode indicating as follows.

3-2
                                                                 3 Alignments and Adjustments

3-3 Factory Data
1. Calibration
2. Option Table     XXXX XXXX
3. White Balance
4. SVP-PX
5. Option Block
6. STV8257/STA323W
7. YC Delay
8. Adjust
9. I2C Check
10. W/B MOVIE
11. Checksum
12. Reset
13. Spread Spectrum
T-BRDMPEA-0161 (Main Micom Ver)
T-BRDMPEUS-1000 (Sub Micom Ver)
  Month / Day / Year / Hour / Min. / Sec.

1. Calibration
   1) AV Calibration
   2) COMP Calibration
   3) PC Calibration
   4) HDMI Calibration
2. Option Table      XXXX XXXX



  Inch Option           32"         Carrier Mute     ON          TTX Group         Auto
    Gamma              OFF            Language      English     Auto Power         ON
  Panel Option     AMLCD_INT          Auto FM        ON        Magazine LNA        OFF
     2HDMI             OFF         High Deviation    OFF            ----            G
   Brt.Sensor          OFF              TTX          ON             ----           OFF
  EnergySave            ON            TTX List       Flof          Debug           OFF
    LBE/FBE            OFF              ACR          OFF         Ch.Table        SUWON
 FRC(Micronas)         OFF          Dynamic CE       ON         iDTV_Cntry          UK
FRC(Samsung)           OFF        Dynamic Dimming    ON       Dynamic Contrast     OFF
      LNA              OFF           Tuner TOP        8




                                                                                          3-3
3 Alignments and Adjustments




1. Calibration                          AV Calibration                       EXE
                                        COMP Calibration                     EXE
                                        PC Calibration                       EXE
                                        HDMI Calibration                     EXE




2. Option Table
                                 Inch Option         23"/32"/37"/40"/46"/57"
                                 Gamma               OFF/AUO/CMO/AMLCD
                                 Panel Option        AUO / CMO/AMLCD_INT/Panel3 / Panel4 / Panel5 / Panel6
                                 2Hdmi               OFF
                                 Brt. Sensor         FF
                                 EnergySave          ON
                                 LBE/FBE             OFF
                                 FRC(Micronas)       OFF
                                 FRC2X               OFF
                                 LNA                 OFF
                                 Carrier Mute        ON
                                 Language            English
                                 Auto FM             ON
                                 High Deviation      OFF
                                 TTX                 ON
                                 TTX List            Flof
                                 ACR                 OFF
                                 Dynamic CE          ON
                                 Dynamic Dimming     ON
                                 Tuner TOP           8
                                 TTX Group           Auto
                                 Auto Power          ON
                                 Magazine LNA        OFF
                                 Debug               OFF
                                 Ch. Table           SUWON
                                 iDTV_Cntry          UK
                                 Dynamic Contrast    OFF



                               BORDEAUX INCH OPTION
                                              Panel Maker              Gamma          Panel Option
                               26             AUO                      AUO            AUO
                               32             AUO                      AUO            AUO
                               32             AMLCD                    OFF            AMLCD_INT
                               37             AUO                      AUO            AUO
                               40             AMLCD                    AMLCD          AMLCD_INT



3-4
                                           3 Alignments and Adjustments

3. White Balance   Sub Brightness                       ADJ
                   R-Offset                             ADJ
                   G-Offset                             128
                   B-Offset                             ADJ
                   Sub Contrast                         100
                   R-Gain                               ADJ
                   G-Gain                               128
                   B-Gain                               ADJ

4. SVP-PX          ComB Filter       Y-Filter            80H
                   Sharpness         H2Gain              05H
                                     H4Gain              02H
                                     V2Gain              0CH
                                     V4Gain              04H
                                     Sr2Gain             02H
                                     Sr4Gain             00H
                                     Sl2Gain             02H
                                     Sl4Gain             08H
                                     Peakth1             04H
                                     Peakth2             2F H
                                     Peakth3             3F H
                   NR                Y_NR_OFF            80H
                                     C_NR_OFF            80H
                                     Y_NR_ON             80H
                                     C_NR_ON             80H


                   RGB Calibration   R-Offset            48H
                                     G-Offset            48H
                                     B-Offset            48H


                                     R-Gain              55H
                                     G-Gain              55H
                                     B-Gain              55H


                   ADC Calibration   TCD3 Contrast       78H
                                     TCD3 Brightness     20H
                                     TCD3 CR             80H
                                     TCD3 CB             80H
                                     TCD3 Delay          00H
                                     Analog Y Offset     41H
                                     Analog PB Offset    80H
                                     Analog PR Offset    80H
                                     Analog Y Gain       CBH
                                     Analog PB Gain      9AH
                                     Analog PR Gain      9AH
                                     Black Level         00H
                                     Svp Brightness      00H


                                                                    3-5
3 Alignments and Adjustments



                                                                        low high        delta
                               Calibration Target   AV ADC              17H D5H         02H
                                                    COMP ADC            0F H EBH        02H
                                                    PC ADC              17H D5H         04H
                                                    ALL RGB             00H DDH         08H



                               Color Management Skin Direction          Reddish
                                                    Skin Enhane         40H
                                                    Green Stretch       00H
                                                    Blue Stretch        00H



5. Option block                        FRC(Micronas)
                                       FRC2X
                                       LBE/FBE              Test Pattern          00H
                                                            BLACK_TILT            000
                                                            BlackGain_MAX         000
                                                            LOWER_FUNC            000
                                                            UPPER_FUNC            000
                                                            SKIN_EN               000
                                                            SKIN_T_X              000
                                                            SKIN_T_Y              000
                                                            ColorGain             000


6. STV8257/STA323W                     Ch1 Volume                                 40H
                                       Ch2 Volume                                 40H
                                       AGC Gain                                   06H
                                       AV-Prescale                                00H
                                       AV Delay                                   41H
                                       Comb Delay                                 41H
                                       HDMI Delay                                 41H
                                       PC Delay                                   41H
                                       L1 Att/Rel Thres                           7FH




3-6
                                     3 Alignments and Adjustments

7. YC Delay   RF PAL-B/G                          AAH
              RF PAL-D/K                          99H
              RF PAL- I                           99H
              RF SECAM-B/G                        88H
              RF SECAM-D/K                        44H
              RF SECAM-L/L'                       88H
              RF NTSC3.58                         66H
              RF NTSC4.43                         CCH
              AV PAL                              AAH
              AV SECAM                            88H
              AV NTSC 3.58                        BBH
              AV NTSC4.43                         AAH
              AV PAL60                            77H

8. Adjust     Video Mute Time                     10
              Melody Volume                       9
              Ana_Dimm_Max                        FEH


              LNA PLUS          RFDB-1   Level    2
                                RFDB-2   Level    5
                                RFDB-3   Level    9
                                RFDB-4   Level    24
              Hotel Option      Hotel Mode       OFF
                                Power On Channel 1
                                Power On Volume 10
                                Max Volume        100
                                Local Key Lock    OFF
                                Power On Source   RF




                                                              3-7
3 Alignments and Adjustments

9. I2C Check                   EXE




10. W/B MOVIE                  WB Movie           OFF
                               Color Mode         Movie

                               W1 R Gain          161
                               W1 B Gain          74
                               W1 R Offset        119
                               W1 B Offset        140
                               W2 R Gain          162
                               W2 B Gain          47
                               W2 R Offset        113
                               W2 B Offset        146
                               Movie Contrast     70
                               Movie Brightness   50
                               Movie Color        45
                               Movie Sharpness    25
                               Movie Color Tone   Warm2




11. Checksum                   EXE




12. Reset                      EXE




13. Spread Spectrum            Spectrum           ON
                               Delta              3
                               Positive           8
                               Negative           2




3-8
                                                                          3 Alignments and Adjustments

3-4 Service Adjustment
3-4-1 White Balance - Calibration

If picture color is wrong, do calibration first.

Equipment : CA210, Patten : chess pattern
Execute calibration in Factory Mode
Source AV : PAL composite, Component : 1280*720/60Hz
         PC : 1024*768/60Hz




          ( chess patten )



3-4-2 White Balance - Adjustment

If picture color is wrong, check White Balance condition.

Equipment : CA210, Patten : Toshiba
Adjust W/B in Factory Mode

Sub brightness and R/G/B Offset controls low light region
Sub contrast and R/G/B Gain controls high light region
Source AV : PAL composite, Component : 1280*720/60Hz
               HDMI[DVI] : 1280*720/60Hz




                                                    [ Test Pattern : MSPG-945 Series Pattern #16 ]

                                                     *Color temperature
                                                     1500K +/-500, -6 ~-20 MPCD

                                                     *Color coordinate
                                                     H/L : 267/263 +/- 2 35.0 Ft +/- 2.0Ft
                                                     L/L : 270/260 +/- 3  1.5 Ft +/- 0.2Ft


                                                   Toshiba Patten

                                                                                                     3-9
3 Alignments and Adjustments

3-4-3 Conditions for Measurement
1. On the basis of toshiba ABL pattern : High Light level (57 IRE)
       - INPUT SIGNAL GENERATOR : MSPG-925LTH
        * Mode     NO     2 : 744X484@60 Hz
                   NO     6 : 1280X720@60 Hz
                   NO 21 : 1024X768@60 Hz
        * Pattern NO 36 : 16 Color Pattern
                   NO 16 : Toshiba ABL Pattern
2. Optical measuring device : CA210 (FL)
       Please use the MSPG-925 LTH generator for model LE26M51B/LE32M51B/LE40M51B/LE46M51B.

3-4-4 Method of Adjustment
1. Adjust the white balance of AV, Component and DVI Modes.
          (AV       Component)
       a) Set the input to the mode in which the adjustment will be made
          (RF       DTV         PC        DVI).
       * Input signal - VIDEO Mode : Model #2 (744*484 Mode), Pattern #16
                      - DTV,DVI Mode : Model #6 (1280*720 Mode), Pattern #16
                      - HDMI Mode: Model #6(1280*720 Mode), Pattern #16


       b) Enter factory color control, confirm the data.


       c) Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)
         - Adjust sub - Brightness to set the 'Y' value.
         - Adjust red offset ('x') and blue offset ('y') to the color coordinates.
                                        Picture 4-2 Toshiba ABL Pattern




                                                                                        Low light
                                                                                        Measurement point


         * Do not adjust green offset data.


       d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
         - Adjust red gain ('x') and blue gain ('y') to the color coordinates.
         * Do not adjust the green gain and sub-contrast (Y) data.




3-10
                                                                          3 Alignments and Adjustments

d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
  - Adjust red gain ('x') and blue gain ('y') to the color coordinates.
  * Do not adjust the green gain and sub-contrast (Y) data.

                                Picture 4-3 Toshiba ABL Pattern




                                                                                 High light
                                                                                 Measurement point




                                                                                                     3-11
3 Alignments and Adjustments

3-5 Software Upgrade
3-5-1 How to Update Flash ROM
1. Installthe Flash Downloader
   ConnectSet(Service Jack)and Jig Cable to execute Program Update.




2. Flash Downloader program update
   -Before Turning on the set,Click "connect"which is under of OSD Screen!
   -Turn on the Set.




3-12
                                                                                      4 Troubleshooting



4 Troubleshooting
4-1 First Checklist for Troubleshooting

1. Check the various cable connections first.
  - Check to see if there is a burnt or damaged cable.
  - Check to see if there is a disconnected cable connection or a connection is too loose.
  - Check to see if the cables are connected according to the connection diagram.

2. Check the power input to the Main Board.

3. Check the voltage in and out between the SMPS        Main Board, between the SMPS
  INVERTER Board, and between the Main LVDS Boards.




                                                                                                   4-1
4 Troubleshooting

4-2 Checkpoints by Error Mode

4-2-1 No Power

       LAMP off, power indicator    No
                                          Check a connection a power cable.
           LED red color?


                    Yes



         Does proper DC 12V         No
                                             Change a Assy PCB Power.
          appear at CN800?



                    Yes


        Does proper DC A3.3V,       No        Check a IC809, IC802.
           A5V appear at
                                             Change a main PCB ass'y.
            C854, C866?


                    Yes


       Does proper DC 5V, 3.3V,     No
      1.8V appear at C811, C853,         Check a IC803, IC805, IC813, IC307.
                C833?                        Change a main PCB ass'y



                    Yes


                                    No         Check a other function.
      A power is supplied to set?                (No picture part)
                                                Replace a lcd panel.




4-2
                                                                              4 Troubleshooting

4-2-2 No Video (Analog PC)



        Power Indicator is off.
         Lamp on, no video.

                     Yes


      Check a PC source and check     No     Input a analog PC signal and
     the connection of DSUB cable?             connected cable(DPMS).


                     Yes


       Does the signal appear at      No        PC cable. Change a PC
 1
     #30, 22, 38(R, G, B) of IC500?        cable. Change a main PCB ass'y.


                     Yes

      Does the digital data appear    No           Check a IC500
            at the output of
                                              Change a main PCB ass'y.
     LVDS (R563_OP~R572_OP)?

                     Yes


         Check a LVDS cable?          No
         Replace a lcd panel?              Please, Call to Samsung Co. LTD.




                                                                                           4-3
4 Troubleshooting


            WAVEFORMS

 1 R,G,B Output Signal of IC500




4-4
                                                                             4 Troubleshooting

4-2-3 No Video (Digital-HDMI)



       Power Indicator is off.
        Lamp on, no video.

                   Yes


       Check the connection          No
                                                Input a HDMI cable.
         of HDMI cable?


                   Yes


   Does the digital data appear at   No         Check a a IC 500
    3      R503~R510?                        Change a main PCB ass'y.


                   Yes

     2 Does the digital data         No
     appear at output of IC500                    Check a IC500
    LVDS(R563_OP~R572_OP)?                   Change a main PCB ass'y.


                   Yes


       Check a LVDS cable?           No
        Replace lcd panel?                Please, Call to Samsung Co. LTD.




                                                                                          4-5
4 Troubleshooting


 2 Digital Output Data of IC500   3 Signal of HDMI(Data)




4-6
                                                                                4 Troubleshooting

4-2-4 No Picture (Tuner_CVBS)



        Power Indicator is off.     No        Connect the RF cable and
         Lamp on, no picure.                      check RF signal.

                    Yes


       Dose the signal appear       No   Check a B+ voltage (#6 of Tuner) 5V,
 4
             at R110?                         change a main PCB ass'y


                    Yes


      Does the signal appear at     No
 4                                            Change a main PCB ass'y.
            #8 of IC500?


                    Yes

     Does the digital data appear   No
 3           at output of                         Check a IC500.
       R563_OP~R572_OP?                       Change a main PCB ass'y.


                    Yes


        Check a LVDS cable?         No
         Replacea lcd panel?              Please, Call to Samsung Co. LTD.




                                                                                             4-7
4 Troubleshooting


            WAVEFORMS

 3 CVBS Output Signal   4 Tuner_CVBS Output Signal




4-8
                                                                             4 Troubleshooting

4-2-5 No Picture (Video_CVBS)



       Power Indicator is off.    No
                                       Check a A/V cable and video signal.
       Lamp on, no picture.

                    Yes


      Dose the signal appear at   No
  4                                       Check a connection harness.
           #10 of IC500?


                    Yes

      Does the signal appear at   No
            Out of IC500                       Check a IC515.
       R563_OP~R572_OP?                    Change a main PCB ass'y


                    Yes


       Check a LVDS cable?        No
        Replace lcd panel?             Please, Call to Samsung Co. LTD.




                                                                                          4-9
4 Troubleshooting


            WAVEFORMS

 4 CVBS Output Signal




4-10
                                                                             4 Troubleshooting

4-2-6 No Picture (S-VIDEO_Y,C)



         Power Indicator is off.     No      Connect the s-video cable.
          Lamp on, no picure.                Operating a video player.
                     Yes

  5 Dose the Y/C signal appear at    No
          #21, #31 of IC500?                Check a connection harness.


                     Yes

      Does the digital data appear
  2                                  No          Check a IC500.
         at Output of IC500,
        R563_OP~R572_OP?                     Change a main PCB ass'y.


                     Yes


         Check a LVDS cable?         No
          Replacea lcd panel?             Please, Call to Samsung Co. LTD.




                                                                                         4-11
4 Troubleshooting


             WAVEFORMS
 2 Digital Output Data of IC500   5 Analog Signal(Y,C) to IC500




4-12
                                                                            4 Troubleshooting

4-2-7 No Sound

                                      No
      Picture is display, no sound.            Connect a sound cable.
                                                 control a volume.


                     Yes


     Does the signal appear at
  Pin #10, #16(CH1_L, R Sound)
                                      No
   6      and Pin #3, #9                   Check a connection harness and
        (CH2_L, R Sound)                     headphone jack / Side AV.
            of IC603?



                     Yes


           Check the DC 12V           No         Check a IC603.
              of IC603?                      Change a main PCB ass'y.



                     Yes


       Does the signal appear at
  7                                   No
         L609_OP, L611_OP,                   Change a main PCB ass'y.
        L612_OP, L614_OP?


                     Yes



      Replace the speaker ass'y?




                                                                                        4-13
4 Troubleshooting


             WAVEFORMS

 6 The Signal are Inputed to IC603   7 DC +12V




4-14
                                                                                    6 Electrical Parts List



6 Electrical Parts List
-You can search for updated part codes through ITSELF web site.
URL : http://itself.sec.samsung.co.kr/
6-1 LA32R71BX/SHI Parts List

Level   Loc. No.     Code No.                         Description & Specification         Q'ty     SA/SNA

0                  LA32R71BX/SHI   LA32R71B,Q62E/32R70-GBD,32,LCD-TV,TANZAN                 0


1       M0001      BN90-00840E     ASSY COVER FRONT;32R71,SO,BORDEAUX                       1        SNA
..2     T0003      BN96-02996D     ASSY COVER P-FRONT;32R71,SO,ABS+PMMA,HB,                 1         SA
...3    M0081      6003-001003     SCREW-TAPTITE;BH,+,B,M4,L12,ZPC(BLK),SWR                 2        SNA
...3    M0081      6003-001003     SCREW-TAPTITE;BH,+,B,M4,L12,ZPC(BLK),SWR                 2        SNA
...3    T0060      BN61-01655A     SPRING ETC;STS-304 SUS,D8,L12,T0.5                       1         SA
...3    C/F        BN63-02183F     COVER-SHEET;Rhcm,PE Vinyl,T0.05,900mm,20                 1.48     SNA
...3    M0112      BN63-02318D     COVER-FRONT;32R71,SO,ABS+PMMA,HB,BK23,S/                 1        SNA
...3    T0056      BN63-02320A     COVER-DECORATION;32R71,HIPS,HB,GR503,BLM                 1         SA
...3    T0023      BN64-00342A     KNOB POWER;ROME,40,PC,VIOLET                             1        SNA
...3    T0059      BN64-00366A     INDICATOR LED;ROME-I,PC,CLEAR,ALL MODEL                  1        SNA
...3    T0054      BN64-00443A     KNOB-DECORATION;32R71,ABS,HB,GR503,VACUU                 1        SNA
...3    T0061      BN64-00453A     WINDOW-REMOCON;32R71,PC,V0,VIOLET,DIFFUS                 1        SNA
...3    CIS        BN63-01151A     FELT-NON WOVEN;MM17NS,T0.5,393,10,BLACK                  2        SNA
...3    T0069      BP60-00015D     SPACER-FELT;617W,FELT,L760,T0.5,W10                      2        SNA
...3               BN96-03404A     ASSY BOARD P-FUNCTION&KNOB;Bordeaux,CT50                 1        SNA
....4   T0022      BN64-00442A     KNOB CONTROL;26,32,40R71,PC,BLK,ACRYL CL                 1        SNA
....4   M0145      BN96-03045A     ASSY BOARD P-FUNCTION;BORDEAUX,FUNCTION                  1         SA
...3    M0146      BN96-03405A     ASSY BOARD P-POWER;BORDEAUX1,CT5000-4140                 1         SA
..2     T0175      BN96-03002A     ASSY SPEAKER P;8ohm,Bordeuax 32"/37"/40"                 1         SA
..2     T0175      BN96-03003A     ASSY SPEAKER P;8ohm,Bordeuax 32"/37"/40"                 1         SA

1       M0002      BN90-00841D     ASSY COVER REAR;32R71,SO,BORDEAUX                        1        SNA
..2     T0081      6002-001294     SCREW-TAPPING;BH,+,,M4,L16,ZPC(BLK)                      2         SA
..2     T0081      6002-001294     SCREW-TAPPING;BH,+,,M4,L16,ZPC(BLK)                      13        SA
..2     M0013      BN96-02997D     ASSY COVER P-REAR;32R71,SO,ABS+PMMA,HB,B                 1         SA
...3    T0101      BN61-02032A     BRACKET-WALL;32,MGM,SECC,T1.6                            2        SNA
...3    M0006      BN63-02319A     COVER-REAR;32R71,EO,SO,CO,ABS+PMMA,HB,BK                 1        SNA
...3    T0071      BN64-00445B     INLAY-TERMINAL;32,37,40R71,(BLK),PS SHEE                 1        SNA
...3               BN63-02183F     COVER-SHEET;Rhcm,PE Vinyl,T0.05,900mm,20                 0.7      SNA
...3    T0064      BN65-00002A     CLAMPER CORE;BORDEAUX,PP,V0,BLK                          1        SNA
...3    T0069      AA63-60131N     SPACER-FELT;L2,FELT,280*10,BLK,T0.5                      2        SNA

1       M0216      BN90-00842A     ASSY STAND;32R71,BORDEAUX                                1        SNA
..2     M0013      BN96-02998A     ASSY STAND P-BASE;32R71,ABS+PMMA,HB,BK23                 1         SA
...3    T0081      6002-001294     SCREW-TAPPING;BH,+,,M4,L16,ZPC(BLK)                      4         SA
...3    M0081      6003-001239     SCREW-TAPTITE;FH,+,B,M4,L10,ZPC(YEL),SWR                 4         SA
...3               BN61-02192A     GUIDE-STAND;26,32R71,ABS,V0,BLK                          1        SNA
...3               BN61-02204A     HOLDER-SWIVEL RING;26,32R71,ACETAL,BLK                   1        SNA
...3               BN61-02232A     HOLDER-SWIVEL RING;32R71,ACETAL NATUAL,T                 1        SNA
...3               BN61-02233A     HOLDER-SWIVEL RING;32R71,ACETAL NATUAL,B                 1        SNA
...3               BN61-02235A     BRACKET-STAND BOTTOM;BORDEAUX 32,SECC,T2                 1        SNA
...3               BN61-02236A     BRACKET-HINGE SWIVEL;BORDEAUX 32,SECC,T1                 1        SNA
...3    T0004      BN63-02321A     COVER-STAND BASE;32R71,ABS+PMMA,HB,BK23,                 1        SNA
...3               BN63-02322A     COVER-STAND SUB;32R71,ABS+PMMA,HB,BK23,H                 1         SA
...3    T0132      BN73-00052A     RUBBER FOOT;ARES 17,SILICON,DIA 17 * T1.                 8        SNA
...3    STAND      BN63-02183D     COVER-SHEET;Rhcm,PE Vinyl,T0.05,680mm,20                 0.4      SNA
...3    T0514      BN61-02367A     BRACKET-SUPPORT;BORDEAUX 32,SECC,T2.0                    1        SNA
..2     T0524      6902-000241     BAG PE;NITRON/HDPE,T0.5/T0.012,W600,L600                 1        SNA

1       M0017      BN91-01006L     ASSY CHASSIS;LA32R71BX,ASIA                              1        SNA
..2     M0014      BN94-00876A     ASSY PCB MAIN;LA32R71B,BORDEAUX,ASIA                     1         SA
...3    T0245      0202-001522     SOLDER-WIRE FLUX;LFA3-107,-,D1.2,96.5Sn/                 0.25     SNA
...3    JA709      3701-001294     CONNECTOR-DSUB;15P,3R,FEMALE,STRAIGHT,AU                 1         SA
...3    CN501      3711-004068     HEADER-BOARD TO CABLE;BOX,5P,1R,2MM,ANGL                 1         SA
...3    CN500      3711-004484     HEADER-BOARD TO CABLE;BOX,5P,1R,2mm,STRA                 1         SA




                                                                                                       6-1
6 Electrical Parts List




Level   Loc. No.     Code No.                       Description & Specification   Q'ty      SA/SNA


...3    TEST901    3711-004484   HEADER-BOARD TO CABLE;BOX,5P,1R,2mm,STRA           1         SA
...3    CN700_OP   3711-004909   HEADER-BOARD TO CABLE;BOX,14P,2R,2MM,ANG           1         SA
...3    CN503      3711-005884   HEADER-BOARD TO BOARD;BOX,30P,2R,2mm,ANG           1         SA
...3    CN800      3711-005942   HEADER-BOARD TO CABLE;BOX,16P,1R,2mm,STR           1         SA
...3    JA708      3722-001061   JACK-PHONE;1P,3.6PI,AG,BLK,N                       1         SA
...3    JA716      3722-001061   JACK-PHONE;1P,3.6PI,AG,BLK,N                       1         SA
...3    JA707_NT   3722-002143   JACK-PIN;5P,NI,GRN/BLU/RED/WHT/RED,STRAI           1         SA
...3    JA715      3722-002360   JACK-PIN;3P,AU,GRN/BLU/RED,STRAIGHT                1         SA
...3    JA704      3722-002362   JACK-PIN;2P,Sn,WHT/RED,STRAIGHT                    1         SA
...3    JA711      3722-002362   JACK-PIN;2P,Sn,WHT/RED,STRAIGHT                    1         SA
...3    JA713      3722-002362   JACK-PIN;2P,Sn,WHT/RED,STRAIGHT                    1         SA
...3    JA714_OP   3722-002363   JACK-PIN;3P,Sn,YEL/WHT/RED,STRAIGHT                1         SA
...3    T0562      6046-001013   STAND OFF;M3,L5,Ni PLT,SUM24L,#4-40                2         SNA
...3    CIS3       BN40-00083A   TUNER;TCPS3001PD32S(H),TCPS3001PD32S(H),           1          SA
...3    M0107      BN63-01847A   SHIELD-COVER;ROME,SECC,T0.3,49.5,79.5,HE           1         SNA
...3    CIS8       BN73-00024C   SILICON/RUBBER-BERGQUIST;VENUS 32,40",SI           1         SNA
...3    T0510      BN97-00845A   ASSY SMD-MAIN;LA32R71B,BORDEAUX,ASIA               1         SNA
....4   CIS5       0202-001477   SOLDER-CREAM;LST309-M,-,D20~45



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