Daewoo DSP-4210GM User manual

Model : DSP-4210GM
CHASSIS : SP-110
S/M No.:TSP110AEF0
Service Manual
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
- 2 -
1M / 500V DC
1. SAFETY & PRECAUTIONS
S AFETY 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
Resistance Strength Distance(d),(d’)
100V Japan 3
110 to 130V USA&Canada - 900VAC 1min 3.2
Europe 6(d)
Australia 8(d)
LatinAmerica (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.
AC Line Voltage
110 to 130V
200 to 240V 10M / 500V DC 4kVAC 1min.
1kVAC 1min .
Region

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Service manual SP-110
Ac Line Voltage Region Load Z Leakage Current( i )Clearance Distance(d),(d’)
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. UseAC voltmeter to measureAC voltage across both terminals of load Z. See Fig.2 and
following table.
Leakage current ratings for selected are as
NOTE
This table is unofficial and for reference only. Be sure to confirm the precise values
for your particular country and locality.
100V Japan
1
i1mArms.
Exposed accessible parts
110 to 130V USA & Can-
ada
1
15 F
i0.5mArms.
Exposed accessible parts
2
i0.7mA peak
i2mAdc
Antenna earth terminals
110 to 130V
200 to 240V Europe
Australia
50
Other terminals
i 0.7mA peak
i 1mAdc

Service manual SP-110
- 4 -
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
2
3) Contrast Ratio 500:1
4) Color Temperature 8000
o
K
3-7. Scaling <Scaling Mode>
PC, DTV : Fill to Aspect Ratio,
Fill to Screen
DVD, VIDEO : Normal, Wide, Panaroma,
Letter Box, Letter Box with Sub Title
<Scaling Adjust>
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)

Service manual SP-110
- 6 -
3. BLOCK DIAGRAM

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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)V
SUS
(Sustain voltage) :Voltage sustaining electronic discharge
TP : P12
Adjustment control : RV600
Standard voltage : 166V
2)V
SCAN
(Scan voltage) : Scan voltage when recording DATA
TP : PA9 #6 PIN of Y PCB
Adjustment control : RV14
Standard voltage : -160V
3)V
ADD
(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.

Service manual SP-110
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1)V
SHELF
(SHELF voltage) : X-electrode sustain voltage when recording DATA
TP : RCU25
Adjustment control : RU5
Standard voltage : +60V
2) V
VH
(SCANVH 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, increaseV
SUS
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 V
SUS
slowly in that
pattern.
3) Increase V
SUS
, 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, setV
SCAN
slowly from - 160V to - 150V and decrease V
SHELF
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.
• 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
o
K
(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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Service manual SP-110
5. When fitting a new board
5-1.Video
(1) Check the related adjustments are correctly set as per previous page.
5-2. X-Sustain
(1) Set theV
SHELF
voltage according to the list of adjustments.
(2) The data of adjustment voltage is on the label, which is attached on the metal part under
Y-Sustain board.
5-3.Y-Sustain
(1) Set theVvh voltage according to the list of adjustments.
(2) The data of adjustment voltage is on label, which is attached on the metal part underY-Sustain
board.
5-4. Power module
(1)You set each voltage according to the list of adjustments.
(2) The data of adjustment voltage is on the label, which is attached on the metal part under
Y-Sustain board.

Service manual SP-110
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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

- 11 -
Service manual SP-110
6-1.Audio/Video

Service manual SP-110
- 12 -
* IMAGE PROCESSOR PART BLOCK DIAGRAM

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Service manual SP-110
Is the signal input jack
correctly connected?
Does the input source operate?
Is input selection inVideo mode?
Does the ‘DTV, PC’ screen
appear after inputting signal 1.Video signal processing is N.G
to DTV or PC jack? 2. Change video PCB
Can you see input to P502 No.43V1 1. Inspect jack PCB
of Video PCB? 2. Inspect input jack
Can you see input to TPY0, V0? 1.Video S/W and 3D COMB filter
(IC402) are N.G
2. Change video PCB
Can you output Sync of TPV2 : 60Hz/ 1. Confirm if IC400 and IC401
50Hz H2 : 31.5KHz/KHz? are N.G
2. Change video PCB
1.Video signal processing is N.G
2. ChangeVideo PCB
Does the ‘Please check input Is there a weak electronic 1.ConfirmAC connection
signal or press “input” key.’ discharge on the screen? 2.Confirm Power S/W on
message appear? Y 3.Inspect Digital and X,Y
N
NO Video screen ( Composite input )
Check start
Y
1.Make sure of is PA603 properly Confirm Video to digital
connection of connected? Connector PA603
Jack(PDP Monitor
&A/V device)
is DVS,DHS,DCLK Video PCB is N.G
of Video PCB P603 Change PCB
OperateA/V device, being outputted?
Which is used.
Confirm
input selection
Y
N
N
NN
N
N
Y
Y
1.Confirm other PCBsVideo PCB than
2.Change PA603
Y
Y
N
N
Y
Y
N
N
CAUTION : 1.You must only remove PA603 after confirming
that you switch off the power.
2.You must thoroughly understand instruction manual
before removing Back cover.
Y
Y

Service manual SP-110
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Does the ‘Please check input Is there a weak electronic 1.Confirm AC connection
signal or press “input” key.’ discharge on the screen? 2.Confirm Power S/W on
message appear? Y 3.Inspect Digital and X,Y
Is the signal input jack
correctly connected?
Does the input source operate?
Is input selection in DTV/DVD mode?
Does the ‘Video’screen
appear after inputting signal 1. DTV signal processing is N.G
to Video jack? 2. Change video PCB
Can you see input to P502 No.10 1. Inspect jack PCB
YD1 of Video jack? 2. Inspect input jack
Can you output DTV signal in 1. DTV S/W and DTV processor(IC505) circuit are N.G
TP R,G,B? 2. DTV H/V Sync processing part is N.G
3. Change video PCB
Can you output Sync of TP V1:Hz/ 1. DTV S/W and DTV processor
H1 : KHz/ Hz? (IC505) circiuit are N.G
2. Change video PCB
1.Video signal processing is N.G
2.AD Converter(IC500) is N.G
3. ChangeVideo PCB
N
NO DTV screen (1080I, 720P, 480P)
Check start
Y
1.Make sure of is PA603 properly ConfirmVideo to digital
connection of connected? Connector PA603
Jack(PDP Monitor
&A/V device)
is DVS,DHS,DCLK Video PCB is N.G
of Video PCB P603 Change PCB
OperateA/V device, being output?
Which is used.
Confirm
input selection
Y
N
N
NN
N
N
Y
Y
1.Confirm other PCBs thanVideo PCBs
2.Change PA603
Y
Y
N
N
Y
Y
N
N
Y
Y

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Service manual SP-110
Is the signal input jack
correctly connected?
Does the input source operate?
Is input selection in PC mode?
Does the ‘Video’screen
appear after inputting signal 1. PC signal processing is N.G
to Video jack? 2. Change video PCB
Can you see input to P502 No.9,8,31,32,33 1. Inspect jack PCB
R,G,B,Hsync,Vsync of Video PCB? 2. Inspect input jack
Can you output PC signal in 1. PC S/W and DTV processor(IC505) are N.G
TP R,G,B? 2. PC H/V Sync processing part is N.G
3. Change video PCB
Can you output Sync of TPV1 : Hz/ 1. PC S/W is N.G
H1 : KHz/ Hz? 2.Change video PCB
1. PC signal processing is N.G
2.A/D Converter is N.G
3. ChangeVideo PCB
Does the ‘Please check input Is there a weak electronic 1.Confirm AC connection
signal or press “input” key.’ discharge on the screen? 2.Confirm Power S/W on
message appear? Y 3.Inspect Digital and X,Y
N
NO PC screen
Check start
Y
1.Make sure of is PA603 properly ConfirmVideo to digital
connection of connected? Connector PA603
Jack(PDP Monitor
& PC)
Does DVS,DHS,DCLK Video PCB is N.G
of Video PCB P603 Change PCB
Operate A/V device, being output?
Which is used.
Confirm
input selection
Y
N
N
NN
N
N
Y
Y
1.Confirm other PCBs thanVideo PCB
2.Change PA603
Y
Y
N
N
Y
Y
N
N
Y
Y

Service manual SP-110
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is the sound signal input jack
correctly connected?
is the speaker properly connected?
Is sound signal output from P502?
is sound signal on P400 No.2,3
of audio PCB?
is sound signal on PA400 No.2,4 1. PA400 connector is N.G
of audio PCB? 2. Change audio PCB
N
NO Sound
Check start
Y
1.Make sure of connection of jack(PDP monitor &A/V device)
N
N
N
Y
Y
N
N
Y
Does the screen appear? 1. ConfirmAC connection
2. Confirm power S/W on
3. Inspect video PCB and other blocks
Y
Connect speaker
1. Jack PCB is N.G
2.Video connection to
jack PCB is N.G
See: Siganl composition of P502 sound
1. RSPC, LSPC => PC sound
2. RSD1, LSD1 => DTV/DVD sound
3. RSV1, LSV1 =>VIDEO, S-VHS sound
1. Sound S/W is N.G
2. Confirm IC404
3. Change video PCB
is soundAMP on PA300 No.1,4 of Is power fed to PA3 of 1. Confirm if PA3 connector is N.G
audio PCB processing an output? audio PCB? 2. Change power board
Y
N N
Does soundAMP on PA300 No.1,4 and
JP659 of audio PCB produce an output? 1. PA300 is N.G (Change audio PCB)
or JP659 is N.G (Change jack PCB)
1. Speaker or sound cable is N.G
2. Change speaker or sound cable
N
Y
Y
Y

- 17 -
Service manual SP-110
Does Remote Controller operate?
N
Check start
Y
1. Confirm Remote Controller operation and battery
N
N
N
Y
Is red LED next to POWER S/W
on?
1. Confirm AC connection
2. Confirm power S/W on
3. Inspect video PCB, LED PCB and other
blocks
Y
1. Connection with video PCB is N.G or video PCB N.G
2. Inspect video PCB and other blocks
1. LED PCB is N.G
2. Change LED PCB
NO Remote Controller operation
Is screen on with key input?
Is there waveform when pressing remocon
in IR NO.2 of P602
1. IR receipt block of video PCB is N.G
2. Inspect video PCB and other PCBs

Service manual SP-110
- 18 -
Does power come on with
remocon?
Check start
1. Connection with video PCB is N.G or
Video PCB is N.G
2. Inspect video PCB and other blocks
N
N
N
Y
Is red LED on next to POWER S/W
on?
1. Confirm AC connection
2. Confirm power S/W on
3. Inspect video PCB, LED PCB and other
blocks
Y
NO Key operation
Is connection between PA601 of key PCB
and video PCB good?
1. PA601 connector is N.G
2. Change key PCB
1. Inspect video PCB and other PCBs
Y

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Service manual SP-110
6-2. DIGITAL
Checking Order for normal operation of Digital Board and Check Points
( *Measure RMS voltage with a multi-meter, refer to the attached picture for position of
check points )
1.After make sure that the set turns off, turn off the High Voltage ON/OFF Switch of the Power
Board and then turn on the set
2. Confirm whether there is an input of 5V, 3.3V into Power Connector ( PA5 ).
- 5V input (pin No.1,2) : If 4.5V ~ 5.2V, O.K.
- 3.3V input (pin No.7,8) : If 3.0V ~ 3.5V, O.K.
3. Confirm whether Power 2.5V, 3.3V_1, 3.3V_2, 3V_3, 5V_1, 5V_2
- 2.5V : If 2.2V ~ 2.7V, O.K.
- 3.3V : If 3.0V ~ 3.5V, O.K.
- 5V : If 4.5V ~ 5.2V, O,K.
4. Confirm Reset and V_MUTE
- Reset : If 3.0V ~ 3.5V, O.K.
- V_MUTE :If 3.0V ~ 3.5V, O.K.
5. Confirm CONF_DONE ( ID102, ID103 )
- CONF_DONE : If 3.0V ~ 3.5V, O.K.