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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.