Daewoo SL-140T, DLT-20W2 Service Manual
Service Manual
20" LCD
CHASSIS :
Model :
S/M NO. : DSL140TEF0
SL-140T
DLT-20W2
Jul. 2007
Contents
I. Parts with the exception of MODULE
1. Safety Precaution⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 3
2. Product Specification ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4
3. Block Diagram ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 5
4. Schematic Diagram⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8
5. PCB Data ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 16
6. Trouble Shooting ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 18
7. Service Part List ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 26
7-1 Service Part List ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 26
9. Power ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 31
10. Inverter ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 32
11. Out Line ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 34
12. Exploded View ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 35
SOFTWARE INSTALL & UPGRADE
-2-
-3-
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 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.
-5-
3. Block Diagram
I302
KEY
EEPROM
Circuit
LCD PANEL
I503
I603
Circuit
REMOCON
H/P AMP
I601
AUDIO AMP
Flash Memory
Power
Inverter
VIF
SIF
SAWS/W
[K3953M]
IF Filter (SAW)
IF
5V_Clean
Tuner
TD1318
IIC
[K9650M]
/RST, /WR, /OE
LVDS
BL-EN,
Address[0:17]
KEYB
IR
2
LED
HP L/R Out
2
MAIN L/R Out
2
Data[0:8]
16
3
8
LOC-II
<Front End>
4
2
7
3
2
AGC, AGC_ADJ
3
2
L/R
D VIDEO
2
24
L/R
BL_ADJ
10
2
LOC-II
<Back End>
3
R, G, B
2
IA03
R, G, B, CVBS
AUDIO L/R
2
TS
Digital Block
8
SCART IN [R/G/B/FB, L/R, Vin]
SCART OUT [Vout, L/R]
SCA
S/SW
R
UOC_UP,
SCALAR_UP
2
T
Front AV, S-VHS IN [V, Y, C]
A
Audio Switch
IA05
Video
SW
3
P
Switch
PC IN [R, G, B]
PC AUDIO IN [L/R]
PC Hsync, Vsync
3
2
DSU
B
SW
2
HDMI
TDA9973
Front AUDIO IN [L/R]
2
V
HDMI IN
8
H
I
D
M
SPDIF OUT
COMP AUDIO IN[L/R]
COMP Video IN [Y, Pb, Pr]
2
C
O
M
-6-
Block Diagram
SDRAM
K4S281632D
4
R, G, B, CVBS
2
DVB AUDIO L/R
ADC
UDA1334BTS
16 15
8
SDRAM_DATA[0:15] SDRAM_ADDR[0:14]
TS_DATA[0:7]
8
MIU_DATA[0:7]
MIU_ADDR[0:24]
MPEG
24
815
PNX8314
Flash
Latch
Latch
74LVC573
M29W320
Memory
74LVC573
22
M24C64
EEPROM
IIC IIS
PCMCIA_D[0:7]
87
PCMCIA[8:14]
PCMCIA[0:7]
BUS
74LVC245
Transceiver
A_MDO[0:7]
ICD30
CI Control
CIMAX
8
TS_Valid
TS_Sync
TS_CLK
TDA_Data[0:7]
A_MDI[0:7]
PI01
CI SLOT
-7-
Block Diagram
POWER
MODULE
INVERTER
I804
AP1117EA33A
S/B 3.3V
SW8
MAIN SW
I803
IRF7316
Channel #1
9V Switching
Channel #2
5V Switching
I851
APW1172
9V 3.3V
I806 (LM317)
9V 5V
I808 (LM317)
9V 5V
I809(AP1117E18A)
3.3V 1.8V
I812(AP1117E18A)
3.3V 1.8V
I821(AP1117E33A)
5V 3.3V
I822(AP1117E18A)
5V 1.8V
I853(APW1172)
5V 1.2V
I805
IRF7316
Channel #1
15V Switching
Channel #2
PA NEL Power
Switching
TUNER
ICD12
I501(LOCII)
IA03, IA05,
EEPROM, Etc
I305(HDMI)
I305(HDMI)
ICD02
I501(LOC II)
ICD13
I601
PA N EL
AUO 20 INCH
24V
BL_EN
BL_ADJ
4. Schematic Diagram
-8-
-9-
Schematic Diagram
Schematic Diagram
-10-
Schematic Diagram
-11-
Schematic Diagram
-12-
Schematic Diagram
-13-
-14-
Schematic Diagram
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