Daewoo SL-602M/P Schematic

Service Manual

LCD TV

CHASSIS : SL-602M/P

Model : LM/LP(32/37/42)L1

LM/LP(32/37/42)L1B1M
LM/LP(32/37/42)L2
LM/LP(32/37/42)L2BSM
LM/LP(32/37/42)L2Z
LM/LP(32/37/42)L2BZM
LM/LP(32/37/42)L2K
LM/LP(32/37/42)L2BKM
LM/LP(32/37/42)L2R
LM/LP(32/37/42)L2BRM

S/M NO. : TSL602MEF0

Jan. 2008

Contents

1.Safety Precaution 3

2.Product Specification 4
2-1.Product Specification

4

2-2.Available Input Signal 5

2-2-1.HDMI/PC/COMPONENT 5
2-2-2.VIDEO 5

3.Block Diagram 6

4.Description of Each Block 7
4-1.Overview 7

4-1-1.AV1_CVBS 8
4-1-2.AV2 - S-VIDEO 8
4-1-3.COMPONENT-Y Pb Pr 9
4-1-4.HDMI 10
4-1-5.PC 10
4-1-6.Sound Output 12

4-2.POWER PCB 12

4-2-1.Input Requirements 12
4-2-2.Output Voltage and Current 13
4-2-3.Connectors 14

5.SERVICE MODE 15

6.Main PCB Trouble Diagnosis 16
6-1.Main PCB Trouble Diagnosis 16

6-1-1.Common checking process when “No signal of Noraster” 16
6-1-2.When No Sound 23
6-1-3.When Control Key does not operate 24
6-1-4.When Remote Controller does not operate 25

6-2.POWER PCB 27

7.Trouble Diagnosis 28
7-1.Facts you must know when Diagnosing or Repairing 28
7-2.Typical Symptoms of PCB problem or bad connection 29

8.Exploded View 30

9.Service Part List 36

9-1.BOM 36
9-2.Differential parts list for Panel 43

10.Circuit Diagram 44

-2-

-3-

1. Safety Precautions

(1) When moving or laying down a LCD Set, please deal with care. 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

check the broken Set’s condition, 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 connecting position and type of the screw. Sort out the

screws and store them separately because screws holding PCBs are working as electric
circuit grounding. Make sure to check if any screw is missing when assembling.

(5) A LCD Sets contains different kinds of connector cables. When connecting or disconnecting

connector cables, check the direction and position of the cable beforehand.
(6) When disconnecting connectors unplug the connectors slowly with care.
(7) Connecotrs 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, make sure to check

their kind, position and direction.

-4-

2. Product Specification

2-1.PRODUCT SPECIFICATION

Features

Screen Size

Aspect Ratio

Resolution
Pixel Pitch

LCD Panel

TV System

Input

Connector

Output

Connector

Sound Output

Power

Consumption

Dimension(W x H x D) (mm)

32" Model

32"

16 : 9

1366x768(WXGA)

0.170mm x

0.510mm x RGB

37" Model

37"

16 : 9

1366x768(WXGA)

0.200mm x

0.600mmx RGB

42" Model

42"

Panel Name

LC320WXN LC370WXN LC420WXN

16 : 9

Contrast Ratio

Receiving

System

Stereo

System

Channel
Memory

RF

S_Video

RCA(602M)

Component

PC RGB

PC Audio

HDMI

Headphone

796 x 563 x 244

927 x 656 x 320

1033 x 714 x 320

Weight(with stand) (kg)

12.5

17

20.5

P: 220~240VAC,50~60Hz P: 220~240VAC,50~60Hz P: 220~240VAC,50~60Hz

M: 110~240VAC,50~60Hz M: 110~240VAC,50~60Hz M: 110~240VAC,50~60Hz

115W

150W 200W

Max

Power

Source

9W 9W 9W

3.5mm Mini-Jack 3.5mm Mini-Jack 3.5mm Mini-Jack

333

3.5mm Mini-Jack 3.5mm Mini-Jack 3.5mm Mini-Jack

D-Sub x 1 D-Sub x 1 D-Sub x 1

RCA x 1 RCA x 1 RCA x 1

2(CVBS)/1(Monitor Out) 2(CVBS)/1(Monitor Out) 2(CVBS)/1(Monitor Out)

SCART(602P)

2(CVBS)/2(RF/Monitor Out) 2(CVBS)/2(RF/Monitor Out) 2(CVBS)/2(RF/Monitor Out)

75 Ohm Coaxial

1

75 Ohm Coaxial

1

75 Ohm Coaxial

1

ANALOG :

0~99CH

ANALOG :

0~99CH

ANALOG :

0~99CH

FM MONO / 2­Carrier,NICAM

FM MONO / 2­Carrier,NICAM

FM MONO / 2­Carrier,NICAM

PAL,SECAM,

NTSC(AV)

PAL,SECAM,

NTSC(AV)

PAL,SECAM,

NTSC(AV)

10000 : 1 10000 : 1 10000 : 1

1366x768(WXGA)

0.227mm x

0.681mmx RGB

-5-

Product Specification

2-2.Available Input Signal

2-2-1.HDMI/PC/COMPONENT

2-2-2.VIDEO

Note : '1360(6) x 768' is same with '1280 x 768'(Only different from OSD display)

- PAL, PAL-M, PAL-N

- NTSC, NTSC4.43

- SECAM

Resolution

640 x 480

800 x 600

1024 x 768

1360(6) x 768

(1280 x 768)

720 x 480

720 x 480i
720 x 576i

720 x 576

1280 x 720

1920 x 1080i

V-freg

60Hz

HDMI

O

O

X
72Hz
75Hz
60Hz
72Hz
75Hz
60Hz
70Hz
75Hz
60Hz
75Hz
60Hz
50Hz
50Hz
60Hz

50Hz
60Hz
60Hz
50Hz

O

O

X

O

O

X

O

O

X

O

O

X

O

O

X

O

O

X

O

O

X

O

O
O

O
O

O

O

O

O

O

O

O

O

O

X
X

O

O

X

O

X

X

O

X

X

O

O

X

O

O

X

X
X

PC(D-Sub) Component Standard

VESA Standard
VESA Standard
VESA Standard

VESA Standard
VESA Standard
VESA Standard

-6-

SL-602P/M Block Diagram

Analog Tuner

Main IC

(CORTEZ LITE)

[FLI8541]

KEY

Circuit

REMOCON

Circuit

KEY1

REMOTE

LED

HDMI Switch

[

PI3HDMI412-B]

LCD PANEL

Flash Memory
[SST25VF016]

16Mb

Audio
Processor
[STV83x7]

EEPROM

[M24C02]

SPK_L/R

10W 8

3

Audio AMP.

[TDA7491]

[ST232ECD]

IIC_Tuner

R/G/B
CVBS

L/R

Y/Pb/Pr

CVBS

Y/C

3

3

2

RF Out

FB

SC1 S/SW

L/R

2

CVBS

2

L/R Out

2

L/R

2

L/R

2

SC2 S/SW

IIS

Reset

IIC_0

CLK/Data
HDMI_SEL

SIF

3

R/G/B

2

H/V Sync

Tuner_CVBS

2

L/R

Tx/Rx

UART

SPDIF

LVDS

2

KEY2

16bit

IIC

B/L ON

EEPROM

[M24C32]

x

EEPROM
[M24C02]

For EDIDFor EDID

For EDIDFor

EDID

DDR RAMDDR RAM

256Mb

Monitor out

ï

2

3. Block Diagram

.Block Diagram

-7-

4. Description of Each Block

4-1.Overview

Digital PCB is Multi Media circuit board that can process various input signals such as Video,
Component, PC, HDMI and analog TV signal.

-8-

Description of Each Block

4-1-1. AV1 _CVBS

CVBS signal(input to IC501), LOC : RC508

4-1-2. AV2_S-VIDEO

Y signal(input to IC501), LOC : RCA31

Color signal(input to IC501), LOC : RCA30

-9-

Description of Each Block

4-1-3. COMPONENT_YPbPr

Y signal(input to IC501), LOC : LCA08

Pb signal(input to IC501), LOC : LCA06

Pr signal(input to IC501), LOC : LCA04

-10-

Description of Each Block

4-1-4. HDMI

HDMI signal(input to IC 501), LOC : LC301 ~ LC312

4-1-5. PC

R signal(input to IC501), LOC : LC210

G signal(input to IC501), LOC : LC208

-11-

Description of Each Block

Horizontal sync(input to IC501), LOC : LC204

B signal(input to IC501), LOC : LC206

Vertical sync9input to IC501), LOC : LC203

-12-

Description of Each Block

4-1-6. Sound Output

Speaker Output

4-2. Power PCB

4-2-1. Input Requirements

32” & 37”

42”

Normal Voltage P: AC 220V ~ 240V

M: AC 110V ~ 240V
Normal Frequency 50/60Hz
Input Current < 1.0 Arms at 220 Vac input
Inrush Current 220V 80A peak
Earth Leakage Current 0.5mA MAX(250AC)

Normal Voltage P: AC 220V ~ 240V

M: AC 110V ~ 240V
Normal Frequency 50/60Hz
Input Current <1.5 Arms at 220 Vac input
Inrush Current 220V 80A peak
Earth Leakage Current 0.5mA MAX(250AC)

-13-

Description of Each Block

4-2-2. Output Voltage and Current

32” & 37”

42”

Output Current

Board

Output

Voltage

Minimum

Output

Voltage

Maximum

Output

Voltage

MIN NOR MAX

Condition

+15Vdc +13.50Vdc +16.50Vdc 0A 0.5A 1.5A

+24Vdc +22.30Vdc +25.40Vdc 0A 5.0A 5.6A

+12Vdc +11.40Vdc +12.60Vdc 0.2A 1.2A 1.5A

ST+5Vdc +4.75Vdc +5.25Vdc 0A 0.7A 0.9A

ST+5Vdc +4.75Vdc +5.25Vdc 0A 0.7A 0.9A

PWR-CTL

OFF

PWR-CTL

ON

DEP

MAXNORMIN

PWR-CTL

OFF

0.9A0.7A0A+5.25Vdc+4.75VdcST+5Vdc

0.9A0.7A0A+5.25Vdc+4.75VdcST+5Vdc

1.5A1.2A0.2A+12.60Vdc+11.40Vdc+12Vdc

9.0A8.0A0A+25.40Vdc+22.30Vdc+24Vdc
PWR-CTL

ON

1.5A0.5A0A+16.50Vdc+13.50Vdc+15Vdc

DEP

Condition

Output Current

Maximum

Output

Voltage

Minimum

Output

Voltage

Output

Voltage

Board

-14-

Description of Each Block

4-2-3 Connectors

A. Panel to Power(CN8,CN3) pin spec

B. Power to Main(CN2) pin spec

CN8(32", 37"), CN3(42")

PIN No.

1
2
3
4
5

6
7
8
9

10
11

12
13

14

Output

+24V
+24V
+24V
+24V
+24V
GND

GND
GND

GND
GND

DIMIMING

INV ON/OFF

P DIMMING

N/C

CN2

PIN No. Output

1+12V

2+12V

3GND

4GND

5+S5V

6GND

7 PWR ON/OFF

8 P DIMMING

9 DIMMING

10 INV ON/OFF

11 GND

12 +15V

13 +15V

14 GND

15 GND

-15-

5. SERVICE MODE

Using the Service Remote controller(R-34SVC), you can enter service mode
directly.

Key Menu Sub Menu Default Vallue Description

S1 Heat Run Mode Full White To enter into Heat Run Mode
S2

Gumi Ch Map Write Gumi Ch Map Write

To set Gumi factory channels directly

EDID Write HDMI EDID Writing automatically.

(same function on S4)
To set sound(display in sequence)
Perss S3 key again and again,

S3 Volume Test Volume Min change like this: ‘Volume Min’ -

‘Volume Middle’ - ‘Volume Max’ ­‘Balance L’ - Balance R’
When it is finished,

S4 HDMI EDID WRITE EDID Write...Wait!

display like this:
FINISH
HDMI1 EDID Success, HDMI2 EDID Success

S5 Index All On

Turn on the all LED of INDEX(Smart Icon)

S6 Panel Test To check the defective pixel of LCD

panel Using

/

buttons, 'Full Red -

Green - Blue - White - Black - Gray'

S7

DEMPOL Ch Map Write

To set DEMPOL channels dirctly

CUT OFF_R 0

CUT OFF_G 0

CUT OFF_B 0 To display offset and drive value at

S8 White Balance DRIVE_R 0 mode above

DRIVE_G 0

DRIVE_B 0

S9

MODEL SL-602M/P

Using / buttons, select between
‘SL-601T’ and ‘SL-602P’ and ‘SL-602M’

S10 Select Type

PANEL LG-32 Using / buttons, select between

'AUO_26' - 'SAMSUNG_26' - 'LG_32' ­'SAMSUNG_32' - 'LG_37' '

'

' ' ' '

BUYER Daewoo Using

/ buttons, select between
'Daewoo' and 'IRAN' and 'Newziland' ­'Others' and Indonesia

/

-16-

Does No signal
screen appear?

Is LVDS connection
Correctly connected?

Is the signal
input Jack properly?

Check start

Y Y

Y

Y

Y

Y

Y

N

N

Does input source
(AV device) work?

Is input selection
in the Correct mode?

N

N

Is waveform of CLK
in the Main PCB
Normal?

N

Is a weak
Discharge detected
in the screen?

N

Check the connection
of Jack
(LCD and AV device)

Check A V device

N

Check input mode

Check LVDS connection
Panel & JP502 of Main PCB

Replace Main PCB
and/or Sub PCB

Replace Main PCB
and/or Sub PCB

Check other PCBs
and connectors

1.Check AC connection

2.Check Power S/W ON

3.Check other PCBs

6. Main PCB Trouble Diagnosis

6-1.Main PCB Trouble Diagnosis

6-1-1.Common checking process when “No signal of No raster”

No signal : OSD is work but no images are displying
No raster : OSD as well as images in not working