Daewoo DSP-4210GM Schematic

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

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Service manual SP-110

1. SAFETY & PRECAUTIONS

AFETY CHECK AFTER SERVING

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

1-1. Insulation resistance test

Confirm the specif ied insulation resistance between po wer cord plug prong and externally e xposed parts of the set (video and audio input terminals, speaker out terminals etc) is greater than v alues given in table 1 below.

1-2. Dielectric strengthen test

Confirm specified dielectr ic strengthen between power cord plug prongs and exposed accessible parts of the set (video and audio input terminals, speaker out, etc) is greater than v alues gi ven table 1 below.

1-3. Clearance distance

When replacing primary circuit component, confirm specified clearance distance (d), (d’) betw een soldered terminals (see Fig1), and between terminals and surrounding metallic parts. See table 1 below.

Rating for selected areas (table 1)

AC Line Voltage

100V Japan 3

110 to 130V USA &Canada - 900V A C 1min 3.2

110 to 130V 200 to 240V

Class model only

Region

Europe 6(d)

Australia 8(d)

Latin America (a : Power cord)

Insulation Dielectric Clearance

Resistance Strength Distance(d),(d’)

1M / 500V DC

10M / 500V DC

1kV AC 1min

4kV AC 1min.

NOTE

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

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Service manual SP-110

1-4. Leakage current test

Confirm specified or lo wer leakage current between B(earth ground, power cord plug prongs) and externally exposed accessible parts (video and audio input terminals, 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

110 to 130V

200 to 240V

Japan

USA & Can-

ada

Europe

Australia

15 F

i 0.5mArms.

i 0.7mA peak

i 2mAdc

i 0.7mA peak

i 1mAdc

i 1mArms.

Exposed accessible parts

Antenna earth terminals

NOTE

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

Other terminals

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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

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Service manual SP-110

ITEM SPECIFICATION REMARK

3-6. Optical Chracteristics

1) Display Resolution 16:9 Wide 853 X 480

2) Peak Luminance 160cd/ m

3) Contrast Ratio 500:1

4) Color Temperature 8000o K

3-7. Scaling <Scaling Mode>

PC, DTV : Fill to Aspect Ratio,

DVD, VIDEO : Normal, Wide, Panaroma, Letter Box, Letter Box with Sub Title

PC,DTV (User Control) : H-Size, V-Size

3-8. Zoom Zoom 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

Fill to Screen

H-Position, V-Position

, 4Direction Paning Avaiable

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 MANUA L

4) STAND (OPTION)

5) WALL HANGER (OPTION)

6) SPEAKER UNIT 2ASS’Y (OPTION)

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3. BLOCK DIAGRAM

Service manual SP-110

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4. Adjustment

4-1. How to conf irm 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

- T int : 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

Service manual SP-110

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.

(Sustain voltage) : Voltage sustaining electronic discharge

1) V

SUS

TP : P12 Adjustment control : RV600 Standard voltage : 166V

2) V

(Scan voltage) : Scan voltage when recording D ATA

SCAN

TP : PA9 #6 PIN of Y PCB Adjustment control : RV14 Standard voltage : -160V

3) V

(ADDRESS voltage) : Voltage recording DAT A

ADD

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.

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Service manual SP-110

1) V

(SHELF voltage) : X-electrode sustain voltage when recording D ATA

SHELF

TP : RCU25 Adjustment control : RU5 Standard voltage : +60V

(SCAN VH voltage) : VH voltage of SCAN IC when scanning

2) V

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 a bnormal OFF-state pixels (which must be in ON-state but are in OFF-state). If any, increase V

voltage slowly from 166V to remo v e abnormal OFF state pix els in that

SUS

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 V

slowly in that

SUS

pattern.

3) Increase V

, which is set as above, by 1V.

SUS

4) Make sure if there are abnormal ON-state pixels(which must be on OFF-state but are in ONstate, for example, R or G) in Blue pattern after aging Blue pattern 5 minutes. If any, set V slowly from - 160V to - 150V and decrease V

slowly to remo v e wrong electronic

SHELF

discharge.

SCAN

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 an y 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.

• You make sure that R,G,B-Gain must be set within the limit of 63 20. If it is over the limit, it

is N.G.

• How to adjust temperature of colour

X = 0.290 0.01, Y = 0.310 0.01

Temperature of colour : 8,300

(7) You can set Luminance level changing Sub-contrast.

• If the set data of Sub-contrast is over the limit of 80, it is N.G.

(8) Press Menu button, to escape from Service mode.

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5. When fitting a new board

5-1. V ideo

(1) Check the related adjustments are correctly set as per previous page.

5-2. X-Sustain

Service manual SP-110

(1) Set the V

voltage according to the list of adjustments.

SHELF

(2) The data of adjustment v oltage is on the label, which is attached on the metal part under

Y-Sustain board.

5-3. Y -Sustain

(1) Set the Vvh v oltage according to the list of adjustments. (2) The data of adjustment voltage is on label, which is attached on the metal part under Y-Sustain

board.

5-4. Power module

(1) You set each voltage according to the list of adjustments.

(2) The data of adjustment v oltage is on the label, which is attached on the metal part under

Y -Sustain board.

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6. Trouble shooting

6-1. Audio/video 6-2. Digital 6-3. X-SUSTAIN 6-4. Y-SUSTAIN 6-5. SCAN Board 6-6. DATA H/L, Connection(LU,CU,RU,LD,CD,RD) 6-7. Power

Service manual SP-110

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6-1. Audio/V ideo

Service manual SP-110

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+ 25 hidden pages