Daewoo DLT-20W2 User 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

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-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

Tuner

TD1318

IF Filter (SAW)

[K3953M]

[K9650M]

LOC-II

LOC-II

Digital Block

KEY

Circuit

REMOCON

Circuit

I302

EEPROM

I503

Flash Memory

LCD PANEL

HDMI

TDA9973

IA03

Audio Switch

IA05

Video

Switch

Inverter

Power

I603

H/P AMP

I601

AUDIO AMP

5V_Clean

VIF

SIF

SAWS/W

AGC, AGC_ADJ

R, G, B, CVBS

AUDIO L/R

SCART IN [R/G/B/FB, L/R, Vin]

SCART OUT [Vout, L/R]

S/SW

UOC_UP,

SCALAR_UP

Front AV, S-VHS IN [V, Y, C]

Front AUDIO IN [L/R]

HDMI IN

D VIDEO

L/R

R, G, B

SPDIF OUT

COMP AUDIO IN[L/R]

COMP Video IN [Y, Pb, Pr]

PC IN [R, G, B]

PC AUDIO IN [L/R]

IIC

KEYB

HP L/R Out

MAIN L/R Out

/RST, /WR, /OE

LVDS

BL-EN,

BL_ADJ

L/R

LED

Address[0:17]

Data[0:8]

PC Hsync, Vsync

-6-

Block Diagram

CI Control

ICD30

CIMAX

CI SLOT

PI01

MPEG

PNX8314

SDRAM

K4S281632D

Flash

Memory

M29W320

Latch

74LVC573

BUS

Transceiver

74LVC245

EEPROM

M24C64

ADC

UDA1334BTS

A_MDI[0:7]

A_MDO[0:7]

PCMCIA[0:7]

PCMCIA_D[0:7]

TS_DATA[0:7]

MIU_DATA[0:7]

MIU_ADDR[0:24]

TDA_Data[0:7]

SDRAM_DATA[0:15] SDRAM_ADDR[0:14]

R, G, B, CVBS

DVB AUDIO L/R

IIC IIS

Latch

74LVC573

TS_Valid

TS_Sync

TS_CLK

PCMCIA[8:14]

815

16 15

-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)

ICD02

I501(LOC II)

ICD13

I601

PA NEL

AUO 20 INCH

24V

BL_EN

BL_ADJ

4. Schematic Diagram

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-9-

Schematic Diagram

-10-

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