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                         S/M No. : TSP110AEF0




Service Manual
  Model : DSP-4210GM
  CHASSIS : SP-110




DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr             May.2001
 TABLE OF CONTENTS




1. Safety precautions ........................................................................................................................... 2

2. Product specification ...................................................................................................................... 4

3. Block diagram .................................................................................................................................. 6

4. Adjustment (How to use service remote controller) ..................................................................... 7

5. When changing the new board ....................................................................................................... 9

6. Trouble shooting .............................................................................................................................. 10

7. Assembly list ....................................................................................................................................30

8. Circuit diagram .................................................................................................................................31

9. Exploded view ..................................................................................................................................35




                                                                        -1-
                                                                                  Service manual SP-110

1. SAFETY & PRECAUTIONS

SAFETY CHECK AFTER SERVING

Examine the area surrounding the repaired location for damage or deterioration. Observe that screw,
parts and wires have been returned to original positions. Afterwards, perform the following tests and
conform the specified values in order to verify compliance with safety standards.

1-1. Insulation resistance test
   Confirm the specified insulation resistance between power cord plug prong and externally exposed
   parts of the set (video and audio input terminals, speaker out terminals etc) is greater than values
   given in table 1 below.

1-2. Dielectric strengthen test
   Confirm specified dielectric strengthen between
   power cord plug prongs and exposed accessible
   parts of the set (video and audio input terminals,
   speaker out, etc) is greater than values given
   table 1 below.

1-3. Clearance distance
   When replacing primary circuit component, confirm specified clearance distance (d), (d') between
   soldered terminals (see Fig1), and between terminals and surrounding metallic parts. See table 1
   below.

   Rating for selected areas (table 1)
                                            Insulation               Dielectric             Clearance
AC Line Voltage        Region
                                            Resistance               Strength             Distance(d),(d')
       100V              Japan              1M   / 500V DC          1kV AC 1min.                   3
    110 to 130V      USA &Canada                 -                 900V AC 1min                   3.2
                        Europe                                                                    6(d)
   110 to 130V
                       Australia          10M    / 500V DC          4kV AC 1min.                  8(d)
   200 to 240V
                     Latin America                                                         (a : Power cord)



* Class model only

NOTE
This table is unofficial and for reference only. Be sure to confirm the precise values for your particular.




                                                   - 2 -
                                                                              Service manual SP-110

1-4. Leakage current test
   Confirm specified or lower leakage current between
   B(earth ground, power cord plug prongs) and externally
   exposed accessible parts (video and audio input termin-
   als, speaker out, etc.)
   Measuring method:(Power ON) lnsert load Z between
   B(earth ground, power cord plug prongs) and exposed
   accessible parts. Use AC voltmeter to measure AC voltage across both terminals of load Z. See Fig.2 and
   following table.

   Leakage current ratings for selected are as
  Ac Line Voltage     Region              Load Z    Leakage Current( i ) Clearance Distance(d),(d')
       100V            Japan                                 i   1mArms.     Exposed accessible parts
                                       1
                     USA & Can-                          i       0.5mArms.   Exposed accessible parts
    110 to 130V                              15 F
                        ada           1
                                                     i   0.7mA peak
                                                                              Antenna earth terminals
    110 to 130V        Europe         2                  i  2mAdc
    200 to 240V       Australia                       i 0.7mA peak
                                                                                   Other terminals
                                      50                i 1mAdc



 NOTE
       This table is unofficial and for reference only. Be sure to confirm the precise values
       for your particular country and locality.




                                                    - 3 -
                                                                Service manual SP-110

2. PRODUCT SPECIFICATION

                                 [ DSP-4210GM ]
                   ITEM                           SPECIFICATION                    REMARK
 1. GENERAL
  1-1. MODEL NO                       DSP-4210GM
  1-2. CHASSIS NO                     SP-110
  1-3. SCREEN SIZE                    42" (16:9)
  1-4. COUNTRY                        WORLD WIDE
  1-5. RESOLUTION                     853(W) X 480(H)
  1-6. REMOCON TRANSMITTER TYPE       R-V2A(ENGLISH), R-V2AK(KOREAN)
  1-7. SAFETY STANDARD                UL, CSA, CE, KE
 2. MECHANICAL
  2-1. DIMENSION
     1) WITHOUT STAND                 W X H X D = 1055 X 652 X 85
     2) WITH STAND                    W X H X D = 1055 X 730 X 85
     3) BOX                           W X H X D = 1190 X 870 X 480
  2-2. WEIGHT
     1) WITHOUT STAND                 33kg
     2) WITH STAND                    39kg
 3. ELECTRICAL & OPTICAL
  3-1. COMPOSITE VIDEO INPUT SIGNAL   NTSC,PAL,SECAM,PAL-M/N,NTSC4.43
                                      1 INPUT ( 75 , 1Vp-p )

  3-2. Y/C INPUT SIGNAL               50/60Hz, Super Jack 1 Input( 75   ,1Vp-p )

  3-3. DTV/DVD INPUT SIGNAL           Y,Pb/Cb,Pr/Cr 1 Input
                                      ( 75 ,1Vp-p )
                                      * DTV Resolution Mode ( Y, Pb, Pr ) :
                                        1920X1080i, 1280X720p,
                                        640X480p
                                      * DVD ( Y,Cb,Cr ) : 50/60Hz

  3-4. PC SIGNAL                      R,G,B,H,V 15Pin D-sub jack 1 Input
                                      ( 75 ,1Vp-p )
                                      * Resolution Mode : VGA - UXGA


  3-5. SOUND INPUT SINAL              Composite, Y/C : L/R Phone Jack 1Pair
                                      DTV/DVD : L/R Phone Jack 1Pair
                                      PC : L/R Phone Jack 1Pair
                                      * Input Impedance 47



                                      - 4 -
                                                                Service manual SP-110


                    ITEM                      SPECIFICATION                         REMARK
3-6. Optical Chracteristics
  1) Display Resolution          16:9 Wide 853 X 480
  2) Peak Luminance              160cd/ m2
  3) Contrast Ratio              500:1
  4) Color Temperature           8000o K
3-7. Scaling                    
                                 PC, DTV : Fill to Aspect Ratio,
                                             Fill to Screen
                                 DVD, VIDEO : Normal, Wide, Panaroma,
                                   Letter Box, Letter Box with Sub Title
                                
                                 PC,DTV (User Control) : H-Size, V-Size
                                                           H-Position, V-Position
                                       +
3-8. Zoom                        Zoom , 4Direction Paning Avaiable
3-9. PIP                         Video Window in DTV/PC Picture
                                 PIP Size, Position Changeable
3-10.OSD                         8Language
                                 KOREAN,ENGLISH,NETHERLAND,
                                 FRENCH,SPANISH,GERMAN,
                                 PORTUGUESE,ITALIAN
3-11. AC Power                   AC 90V-264V, 50/60Hz
3-12. Power Consumption          350 WATTS
3-13. Sound Output               L : 8Watts, R : 8Watts
3-14. LAN Interface              Option
3-15. Settop Box Interface       Option
3-16. Others                     Freeze Picture, Video Rotation

4. USER CONTROL & ACCESSORIES
 4-1.CONTROL
    1) SET                       AC POWER, MENU, INPUT SELECT, UP,
                                 DOWN, LEFT, RIGHT
  2) REMOCON TRANSMITTER         INPUT SELECT,POWER,RECALL, ZOOM-,
                                 ZOOM+,MENU,UP,DOWN,LEFT,RIGHT,
                                 PICTURE MODE,FREEZE,SCREEN MODE,
                                 MUTE
4-2. ACCESSORIES                 1) REMOCON : R-V2A, R-V2AK
                                 2) BATTERY : "AAA" 2EA
                                 3) INSTRUCTION MANUAL
                                 4) STAND (OPTION)
                                 5) WALL HANGER (OPTION)
                                 6) SPEAKER UNIT 2ASS'Y (OPTION)


                                    - 5 -
                           Service manual SP-110

3. BLOCK DIAGRAM




                   - 6 -
                                                                           Service manual SP-110

4. Adjustment

 4-1. How to confirm the origianl data of VIDEO PCB

   (1) Input selection : You select video mode
   (2) You confirm the original data of user control
       - Brightness : 36 ( :20 in case of DTV/PC input mode )
       - Contrast : 60
       - Sharpness : 2
       - Colour : 32
       - Tint : 0 ( Center )
   (3) You confirm the original data of SERVICE MODE (PW364)
       ( See 4-4 )
       - Sub-Brightness : 60
       - Sub-Contrast : 70
       - R-Bias : 63
       - G-Bias : 63
       - B-Bias : 68
       - R-Gain : 53
       - G-Gain : 57
       - B-Gain : 76

 4-2. How to adjust POWER PCB

   (1) Devices for measurement : Digital volt meter, Pattern generator
   (2) Conditions : You adjust as follows after assembling set and inputting WHITE PATTERN.
       1) VSUS(Sustain voltage) : Voltage sustaining electronic discharge
          TP : P12
          Adjustment control : RV600
          Standard voltage : 166V
       2) VSCAN(Scan voltage) : Scan voltage when recording DATA
          TP : PA9 #6 PIN of Y PCB
          Adjustment control : RV14
          Standard voltage : -160V
       3) VADD(ADDRESS voltage) : Voltage recording DATA
          TP : P14
          Adjustment control : VRS1
          Standard voltage : 80V

 4-3. X/Y PCB adjustment

   (1) Devices for measurement : Digital volt meter, Pattern generator
   (2) Previous adjustment voltage : You adjust as follows after assembling set and inputting BLUE
       PATTERN.




                                                - 7 -
                                                                              Service manual SP-110

     1) VSHELF(SHELF voltage) : X-electrode sustain voltage when recording DATA
         TP : RCU25
         Adjustment control : RU5
         Standard voltage : +60V
     2) VVH(SCAN VH voltage) : VH voltage of SCAN IC when scanning
         TP : RY7 voltage each side
         Adjustment control : RY6
         Standard voltage : -70V
  (3) The final operation adjustment
     1) Input a monochrome pattern of R,G,B. And then you check if there are abnormal OFF-state
         pixels (which must be in ON-state but are in OFF-state).
         If any, increase VSUS voltage slowly from 166V to remove abnormal OFF state pixels in that
         pattern.
     2) If there is no abnormal OFF-state pixel in monochrome pattern of R,G,B, make sure if there is
         abnormal OFF-state in Magenta, Cyan, Yellow or not. If any, increase VSUS slowly in that
         pattern.
     3) Increase VSUS, which is set as above, by 1V.
     4) Make sure if there are abnormal ON-state pixels(which must be on OFF-state but are in ON-
         state, for example, R or G) in Blue pattern after aging Blue pattern 5 minutes. If any, set VSCAN
         slowly from - 160V to - 150V and decrease VSHELF slowly to remove wrong electronic
         discharge.

4-4. White balance adjustment

  (1) Feed grey scale signal to video input terminal.
  (2) Confirm the original data of user control (See 4-1).
  (3) Press Remote controller in order starting with UP => MUTE => RECALL => MUTE BUTTON
     to access Service adjustment       mode and select PW364. And then confirm the original data of
     the Service mode PW364 register. (See 4-1).
  (4) Make sure you can't recognize any grey scale errors in the form of colour tint in this darker bands.
  (5) You attach the sensor of a White balance meter to the white part on the upper end of this grey
      scale pattern.
  (6) Set White balance changing R,G,B-Gain.
     



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