Daewoo DLT-19W4 User manual

S/M NO. : DSL150TP00
Service Manual
19”,20”,22” LCD TV
CHASSIS: SL-150T/150P
Model: DLT-19W4 / DLP-19W4
DLT-22W4 / DLP-22W4
DLT-20J1 / DLP-20J1M
DLT-20J3 / DLP-20J3M
DLT-20J9 / DLP-20J9M
DLT-19L1 / DLP-19L1
DLT-19L2 / DLP-19L2
DLT-22L1 / DLP-22L1
DLT-22L2 / DLP-22L2
Caution:
In this manual some parts can be changed for improving. Their
performance without notice in the parts list. So, if you need the lat-
est parts information, please refer to PPL(Parts Price List) in Service
Information Center.
JAN. 2008

1
I. Parts with the exception of MODULE
1. Safety Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. Product Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
4. Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
5. PCB Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
6. Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7. Service Part List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30
8. Different part list for models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
9. Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
10. Out Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
11. Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
12. Software Install & Upgrade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
13. SVC keys function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .73
* Remarks
Points from 3 show data for DLT models.
For DLP models diffrent part list for models (point 8) must be used.
Contents

2
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 elec-
tric circuit grounding, make sure to check if any screw is missing when assembling / reas-
sembling. 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 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.

3
2. Product Specifications
Model DLT-19W4 / DLP-19W4 DLT-20Jx / DLP-20JxM DLT-22W4 / DLP-22W4
Screen Size 480mm (diagonal) 510.54mm (diagonal) 558.673mm (diagonal)
Display Colour 16.7 M
Aspect Ratio 16:10 4:3 16:10
Resolution 1440 x 900 (WXGA+) 640 x 480 (VGA) 1680 x 1050 (WSXGA+)
Pixel Pitch 0.2835 x 0.2835 0.6375 x 0.6375 0.2835 x 0.2835
Contrast Ratio 1000:1 350:1 1000:1
Appearance
(W x H x D)
w/o stand 476.3 x 346 x 80 514 x 460 x 85 545.4 x 400 x 81
with stand 476.3 x 401.5 x 190 514 x 498 x 239 545.4 x 426 x 190
Weight
(Net)
w/o stand 4.9 Kg 7.0 Kg 5.6 Kg
with stand 5.2 Kg 8.0 Kg 5.9 Kg
Power Consumption 42W / 39W 52W / 49W 50W / 46W
Sound Output 2.0W + 2.0W
Terminals
AV IN : SCART, COMPOSITE VIDEO, AUDIO L/R,
COMPONENT, PC, HDMI
HEADPHONE : 3.5mm STEREO MINI-JACK
DIGITAL AUDIO OUT: Coaxial
ANT. IN : COAXIAL-TYPE
Reception Channel
VHF BAND I : CH2-CH4
BAND II : CH5-CH12
UHF HYPER BAND : SI’-S3’, S1-S20
BAND IV, V : CH21-CH68
PAL-B/G, D/K, SECAM-L/L’, NTSC(AV input only)
Power Source AC 220 ~ 240V, 50Hz
The follow-
ing picture
formats is
available:
RF, AV1, AV2
MODE
4:3, FULL SCREEN
WIDE, FULL SCREEN
4:3, FULL SCREEN
COMPONENT,
HDMI, PC FULL SCREEN
DVB-T MODE WIDE, FULL SCREEN
Resolution V-Freq DLT/P-19W4, 22W4 DLT/P-20J1, 20J3, 20J9 Remark
PC(D-Sub) HDMI PC(D-Sub) HDMI
640 x 480 60Hz o o o o
800 x 600 60Hz o o x x
1024x768 60Hz o o x x
1280x768 60Hz o x x x
1440 x 900 60Hz o x x x
PC Input resolution in LCD
Resolution V-freq DLT/P-19W4, 22W4 DLT/P-20J1, 20J3, 20J9 Remark
Component HDMI Component HDMI
720 x 480i 60Hz oxox
720 x 480p 60Hz o o o o
720 x 576i 60Hz oxox
720 x 576p 60Hz o o o o
1280 x 720p 50Hz o o o o
60Hz o o o o
1920 x 1080i 50Hz o o o o
60Hz o o o o
Multimedia input resolution table in LCD

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Block Diagram (Power Lips)

6
4. Schematic Diagram (DLT-19W4, DLT-22W4)

7
Schematic Diagram (DLT-20J1, DLT-20J3)

8
Schematic Diagram

9
Schematic Diagram

10
Schematic Diagram

This page can be used only for DLT models
11
Schematic Diagram

12
Schematic Diagram

13
Schematic Diagram

14
5. PCB Data (DLT-19W4, DLT-22W4 - TOP)

15
PCB Data (DLT-19W4, DLT-22W4 - BOTTOM)

16
PCB Data (DLT-20J1, DLT-20J3 - TOP)

17
PCB Data (DLT-20J1, DLT-20J3 - BOTTOM)

18
PCB Data (DLT-19W4, DLT-22W4 - Control PCB - TOP)

19
PCB Data (DLT-19W4, DLT-22W4 - Control PCB - BOTTOM)