Daewoo DSL-20D3 User manual

SERVICE MANUAL
LCD Television
CHASSIS : SL-110P
Model : DSL-20D3
APR. 2005

Contents
I. Parts with the exception of MODULE
1. Safety Precaution 3
2. Product Specification 4
3. Block Diagram 7
3-1 PCB Structure
3-2 Power ree
3-3 Signal Block Diagram
4. Description of video circuit 10
5. Schematic Diagram 20
6. SL-110P Service Data 29
7. Service Part List 36
7-1 Difference List of SL-110P 43
8. Adapter 44
9. Inverter 45
10. Exploded View 47
-2-

-3-
1. Safety Precautions
1. Safety Precautions
(1) When moving or laying down a LCD Set, at least two people must work together. Avoid any
impact towards the LCD Set.
(2) Do not leave a broken LCD Set on for a long time. To prevent any further damages, after
checking the condition of the broken Set, make sure to turn the power (AC) off.
(3) When opening the BACK COVER, you must turn off power (AC) to prevent any electric
shock.
(4) When loosening screws, check the position and type of the screw. Sort out the screws and
store them separately for reassembling. Because screws holding PCBs are working as
electric circuit grounding, make sure to check if any screw is missing when assembling /
reassembling. Do not leave any screws inside the set.
(5) A LCD Set contains different kinds of connector cables. When connecting or disconnecting
cables, check the direction and position of the cable beforehand.
(6) Connect/disconnect the connectors slowly with care especially FFC (film) cables and FPC
cables. Do not connect or disconnect Picture 1-1. Panel Gas Exhaust ube
connectors instantaneously with force, and
handle them carefully for reassembling.
(7) Connectors are designed so that if the number of pins or the direction does not match,
connectors will not fit. When having problem in plugging the connectors, check their kind,
position, and direction.

-4-
2. Product Specification
ModelDSL-20D3
CHASSIS NOSL-110P
CountryEurope
Remote controllerR-47B02
LCD Panel LCD ypeN (AIO)
Screen Size)20” (50.8 )
Aspect Ratio4 : 3
Resolution800 600 (SVGA)
Pixel Pitch0.51 0.51
Brightness500 cd/
Contrast ratio500 : 1
Viewing Angle (U/D/R/L) 60 / 60/ 80 / 80
Response ime16
V System Color SystemPAL / SECAM
Receiving SystemPAL B/G, I/I’, D/K, L-SECAM,
L’-SECAM
uning MethodFVS
unerPA BF19D (PAR SNIC)
VHF :
BAND : CH2 ~ CH4
BAND : CH5 ~ CH12
Reception ChannelCABLE BAND : S1’ ~ S3’,
S1 ~ S20
UHF :
HYPER BAND : S21 ~ S41
BAND , : CH21 ~ CH69
PIF :
38.9 (B/G, D/K, I/i’, L),
34.2 (L )
SIF :
33.4 (B/G), 32.4 (D/K, L),
32.9 (I/I’), 41.0 (L’)
IF & SubCarierS-subcarrier :
5.5 / 5.85 (NICAM) /
5.74 (2-Carrier)
Color-subcarrier :
4.43 (PAL), 4.25 /
4.40625 (SECAM)
Audio SystemMono / Stereo / Dual
Channel Memory99 Channel, Auto Preset
Input V Input75 Ohm external input terminal
(DIN Standard)
A/V (R,G,B / COMPOSI E) Scart Jack 1
S-Video Input S-VHS (Y/C) 1
COMPOSI E
Video / Audio(N SC, PAL, SECAM, N SC4.43)
RCA Jack 1, Audio L/R 1
COMPONEN
Component / Audio(Y, Pb/Cb, Pr/Cr, 480i ~ 1080i)
RCA Jack 1
Audio L/R 1
PC InputVGA ~ SVGA
15Pin D-SUB Jack 1
PC Audio Input Stereo Jack 1
Output Video / Audio Scart Jack 1
Headphone 3.5 Mini Stereo Jack 1
2-1. SPECIFICATION

-5-
Product Specification
Other FeaturesComb Filter2D
C I
L I
OSD17 Languages
ELE EX 10 Page memory OP / FLOF
Audio Output5W (2.5+2.5W)
(10% HD, 60%MOD at 1kHZ)
Speaker 5 2
Aspect ratio control16 : 9 / ZOOM
Auto Power off
Wake up
Sleep time15/30/45/60/90/120 min
Wall mount holeVESA compatible
Power Consumption
Max50 W
Stand-by3W under
Power supplyDC 15V
External Adaptor
Power SourceAC 100-240V
50 / 60
Dimension (W H D)
Set dimension (with Stand)(608 403 215)
ilt (Front / Back)5” / 15”
Weight (with Stand)10.95
USER CON ROL & ACCESSORIES POWER V/VIDEO MENU
Control Button (Set) VOL. DOWN VOL. UP
PR. DOWN(On) PR. UP(On)
Remote Controller (32keys) POWER MU E PR. UP
PR. DOWN VOL. UP
VOL. DOWN MENU
NORMAL RED GREEN
YELLOW CYAN ELE EX
SLEEP ASPEC PC
V/AV S.MODE RECALL
X keys 0 ~ 9 Digit keys
Instruction AC Adapter
Accessories AC Power Remote Controller
Battery (AAA 2)

-6-
Product Specification
Stamdard Resolution (Mode) V Frequency (Hz) H frequency (KHz) 15 inch 17 inch 20inch
MAC 640 480 66 35
832 624 75 49.73
2-2. Available Input Signal
(1) PC input
(2) Component input
- 480i/ 60 Hz
- 480p / 60 Hz
- 576i / 50 Hz
- 576p / 50 Hz
- 720p / 60 Hz
- 1080i / 50 Hz
- 1080i / 60 Hz
(3) Video input
- N SC-M/4.43
- PAL / SECAM

7

8

9
SOUN
ADC
MST9883
(IC16)
SAW
FILTER
TV
RF TUNER
SOUND PROCESSOR
IF
PROCESS
VIDEO
DECOD
-ER
MICOM
TTX&
CAPTION VIDEO
BACK
END
DISPLAY
DECODER EEPROM
24LC16(IC31)
S-VIDEO Input
S-VHS (JP5)
SCART(JP11)
(Only Europe)
Video Input
RCA (JP8)
SW IC
4052
(IC2)
SDRAM
IS42S3200B-6T
(IC23)
FLASH
SST39VF800A
(IC11)
SCALER
PW113 (IC13)
G
P
O
R
T
V
P
O
R
T
D
P
O
R
T
PIXEL
PROCE-
SSOR
SCALER
& CLT
& OSD
COLOR
SPACE
EXPAND
-ER
De-interlacer
MDIN-150 (IC22)
C
S
C
C
S
C
De-
interlace
processo r
LOGIC IC
74LV273 (IC40)
SW IC
PI5V330
(IC34)
SW IC
PI5V330
(IC9)
SW IC
PI5V330
(IC5)
SW IC
4052
(IC33)
MICOM EEPROM
24LC16 (IC38)
LVDS
EL-LV385
(IC7)
INVERTER
SCL1 SDA1
IR
KEY
TXD
TV (RGB)
TV (HV)
MAIN (L,R)
H.P (L,R)
SCL1 SDA1
CVBS
Y/C
RGB, CVBS
RXD SCL2
GHS
GCLK
GCOAST
SCL2
SDA2
L, R
L, R G COAST PC(RGB) 24bit
SCART
AUDIO
AVAUDIO
COMP1 AUDIO
SW
PC AUDIO
PC(HV)
TV (HV)
PC (RGB)
COMP1 (YPbPr)
TV (RGB)
MAIN IC VCTI
(IC29)
COMP2 AUDIO
COMP2 (YPbPr) SW
SW
SWSW
MAIN (R)
MAIN (L)
H.P (L,R)
SOUND AMP
TDA1517 (IC30)
SOUND AMP
TDA1517 (IC25)
SPEAKER
SPEAKER
H- PHONE
SCL2 SDA2
RXD
CXA1315
(IC26) SOUND MUTE
SCL1
SDA1
GVS
GHS
TV
(RGB),
COMP
(YPbPr),
24bit
GCLK
TXD
GVS
SCL1
SDA1
RGB
24bit
VHS
VVS
VCLK
SCL2
SDA2
SDA2
RGB
24bit
DHS
DVS
DCLK
LCD ON
Dimming 4-Lamp
cable
(15"/ 17")
6- Lamp
cable (20" )
RGB
DATA
8bit
CLK 2bit
TO LCD
MODULE
15inch : XGA (S/S)
17inch : WXGA (S/S)
SDRAM Interface
3-3. SIGNAL BLOCK DIAGRAM
SW
(5- Line)
D AMP
KA4558 (IC36)
L : PC
H : TV/COMP1,2
L : COMP1,2
H : TV
L : COMP2
H : COMP1
TV/COMP ADC SEL MODE
L L PC
L H X
H L X
H H AV
A_SEL0 A_SEL1 MODE
L L COMP1
L H PC
H L COMP2
H H AV

4. Description of video circuit
-10-
SL-110P video circuit :
Process various input signals <Analog-TV signal, CVBS(NTSC), Y/C signal, Component
signal(Y-Pb-Pr 1080i, 720P, 480P, 480i), Analog-PC signal> to produce Output Signal for LCD
panel(15” : 1024 768, 17” : 1280 768, 20” : 800 600).
Introduction for main IC
4-1. IC29 (The VCT 49xxI)
: IC family of high-quality single chip TV processors <DRX, MSP, VSP, DDP and SDA>