Samsung T200HD, T220HD Schematic

LCD-Monitor

Chassis : LS22TDD / LS20TDD

Model :

T220HD / T200HD

SERVICE

Manual

TFT-LCD Monitor Contens

T220HD / T200HD

Refer to the service manual in the GSPN (see the rear cover) for the more information.

1. Precautions

2. Product specifications

3. Disassembly and Reassembl

e

4. Troubleshootin

g

5. Exploded View & Part Lis

t

6. Wiring Diagra

m

7. Schematic Diagra

m

Contents

1. Precautions .............................................................................................................. 1-1

1-1. Safety Precautions ......................................................................................................... 1-1

1-2. Servicing Precautions ..................................................................................................... 1-2

1-3. Static Electricity Precautions .......................................................................................... 1-2

1-4. Installation Precautions .................................................................................................. 1-3

2. Product specifications ............................................................................................ 2-1

2-1. Feature & Specifications ................................................................................................. 2-1

2-2. Spec Comparison to the Old Models .............................................................................. 2-3

2-3. Accessories .................................................................................................................... 2-4

3. Disassembly and Assembly ................................................................................... 3-1

3-1. Disassembly ................................................................................................................... 3-1

4. Troubleshooting ...................................................................................................... 4-1

4-1. First Checklist for Troubleshooting ................................................................................ 4-1

4-2. No Power ........................................................................................................................ 4-2

4-3. No Video (Analog PC) ................................................................................................... 4-4

4-4. No Video (Digital-HDMI) ................................................................................................. 4-7

4-5. No Picture (Tuner_CVBS) ............................................................................................ 4-10

4-6. No Picture (Tuner_DTV) ............................................................................................... 4-13

4-7. No Sound ...................................................................................................................... 4-16

4-8. Faults and Corrective Actions ....................................................................................... 4-19

4-9. Adjustment .................................................................................................................... 4-20

4-11. Service Adjustment .....................................................................................................4-21

5. Exploded View & Part List ...................................................................................... 5-1

5-1. Exploded View -20” ......................................................................................................... 5-1

5-2. Parts List ......................................................................................................................... 5-3

5-3. Exploded View -22” ....................................................................................................... 5-30

5-4. Parts List ....................................................................................................................... 5-32

6. Wiring Diagram ........................................................................................................ 6-1

6-1. Wiring Diagram - Main Board ......................................................................................... 6-1

6-2. Wiring Diagram - IP Board .............................................................................................. 6-2

6-3. Connector Functions ...................................................................................................... 6-3

6-4. Cables ............................................................................................................................ 6-3

7. Schematic Diagram ................................................................................................. 7-1

7-1. Circuit Descriptions ......................................................................................................... 7-1

7-2. Block description ............................................................................................................ 7-2

7-3. Schematic Diagrams ...................................................................................................... 7-3

7-3-1. Schematic Diagrams (POWER) .................................................................................. 7-3

7-3-2. Schematic Diagrams (SOUND) .................................................................................. 7-4

7-3-3. Schematic Diagrams -SIGNAL INPUT ( HDMI1,HDMI2,DSUB,AUDIO) ..................... 7-5

7-3-4. Schematic Diagrams - SIGNAL INPUT ( SCART,Component) .................................... 7-6

7-3-5. Schematic Diagrams - Scaler/LVDS Output ................................................................ 7-7

7-3-6. Schematic Diagrams - Tuner ....................................................................................... 7-8

7-3-7. Schematic Diagrams - DTV Audio ............................................................................... 7-9

7-3-8. Schematic Diagrams - DTV IC Block ........................................................................ 7-10

7-3-9. Schematic Diagrams - PCMCIA ................................................................................ 7-11

7-3-10. Schematic Diagrams - TV PCMCIA .........................................................................7-12

7-3-11. Schematic Diagrams - SIGNAL INPUT ( DVI) ......................................................... 7-13

GSPN (Global Service Partner Network)

Area Web Site

North America

http://service.samsungportal.com

Latin America

http://latin.samsungportal.com

CIS http://cis.samsungportal.com

Europe http://europe.samsungportal.com

China http://china.samsungportal.com

Asia http://asia.samsungportal.com

Mideast & Africa

http://mea.samsungportal.com

This Service Manual is a property of Samsung Electronics Co.,Ltd.

Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.

© 2008 Samsung Electronics Co.,Ltd.
All rights reserved.

Printed in Korea
P/N: BN82-00361A-00

1-1

1. Precautions

1. Precautions

1-1. Safety Precautions

Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as
electrical shock.

1-1-1. Warnings

For continued safety, do not attempt to modify the circuit board.

Disconnect the AC power and DC power jack before servicing.

1-1-2. Servicing the LCD Monitor

When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet.

It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of
this meter periodically.

1-1-3. Fire and Shock Hazard

Before returning the monitor to the user, perform the following safety checks:

Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the
chassis and other metal parts in the monitor.

Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and
compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc.

Leakage Current Hot Check (Figure 1-1):
WARNING : Do not use an isolation transformer during this test.
Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI
C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7).

With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch

first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit,

etc.) and all exposed metal parts, including: metal cabinets, screwheads and control shafts.
The current measured should not exceed 0.5 milliamp.
Reverse the power-plug prongs in the AC outlet and repeat the test.

1-1-4. Product Safety Notices

Some electrical and mechanical parts have special safetyrelated characteristics which are often not evident from visual
inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage,

wattage, etc. Parts that have special safety characteristics are identified by

on schematics and parts lists. A substitute

replacement that does not have the same safety characteristics as the recommended replacement part might create

shock, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever

appropriate.

1.

2.

1.

2.

1.

2.

3.

4.

DEVICE
UNDER
TEST

(READING SHOULD)
NOT BE ABOVE 0.5mA

LEAKAGE
CURRENT
TESTER

TEST ALL

EXPOSED METAL

SURFACES

2-WIRE CORD

*ALSO TEST WITH

PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)

EARTH

GROUND

Figure 1-1. Leakage Current Test Circuit

1-2

1. Precautions

1-2. Servicing Precautions

WARNING: An electrolytic capacitor installed with the wrong polarity might explode.
Caution: Before servicing units covered by this service manual, read and follow the Safety Precautions section of

this manual.

Note: If unforeseen circumstances create conflict between the following servicing precautions and any of the

safety precautions, always follow the safety precautions.

1-2-1 General Servicing Precautions

Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before
attempting to:
(a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test
component in parallel with an electrolytic capacitor.

Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes
used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such
elements to their original position.

After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that
the area around the serviced part has not been damaged.

Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels,
input terminals and earphone jacks).

Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON.
Connect an insulation resistance meter (500 V) to theblades of the AC plug.
The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be
greater than 1 megohm.

Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead;
always remove the instrument’s ground lead last.

1-3. Static Electricity Precautions

Some semiconductor (solid state) devices can be easily damaged by static electricity. Such components are commonly

called Electrostatically Sensitive Devices (ESD). Examples of typical ESD are integrated circuits and some field-effect

transistors. The following techniques will reduce the incidence of component damage caused by static electricity.

Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your
body by touching a known earth ground. Alternatively, wear a discharging wrist-strap device. To avoid a shock hazard,
be sure to remove the wrist strap before applying power to the monitor.

After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent
accumulation of an electrostatic charge.

Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDs.

Use only a grounded-tip soldering iron to solder or desolder ESDs.

Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static” can generate
electrical charges sufficient to damage ESDs.

Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs
are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive
materials.

Immediately before removing the protective material from the leads of a replacement ESD, touch the protective
material to the chassis or circuit assembly into which the device will be installed.
Caution: Be sure no power is applied to the chassis or circuit and observe all other safety precautions.

Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together,

or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD.

1.

2.

3.

4.

5.

6.

1.

2.

3.

4.

5.

6.

7.

8.

1-3

1. Precautions

1-4. Installation Precautions

For safety reasons, more than two people are required for carrying the product.

Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock.

Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal

temperature may cause fire.

Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed

to moisture. Otherwise, it may cause a fire or electric shock.

Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check

the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric

shock.

Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the
antenna falling over may cause fire or electric shock.

When installing the product, leave enough space (10cm) between the product and the wall for ventilation purposes.

A rise in temperature within the product may cause fire.

1.

2.

3.

4.

5.

6.

7.

1-4

1. Precautions

Memo

2-1

2. Product specifications

2. Product specifications

2-1. Feature & Specifications

Model T220HD / T200HD

Feature

Supreme Digital Interface & Networking

- With a built-in HD digital tuner, it supports HD broadcasting with no particular set-top box and provides simple
access with a single remote control.

Excellent Picture Quality

- DNIe technology provides life-like clear images.

Dynamic Contrast

- Automatically detects the input visual signal and adjusts to create optimum contrast.

SRS TruSurround XT

- SRS TruSurround XT provides a virtual Dolby surround system.

Convenience

-The TV utilizes the HDMI system to implement perfect digital sound and picture quality.

ሪ

ሪ

ሪ

ሪ

ሪ

Specifications

Item

Description

T220HD T200HD

LCD Panel TFT-LCD Panel, RGB Vertical strip,

normaly White, 22-Inch viewable,

0.282(H) X 0.282(V)mm Pixel Pitch

TFT-LCD Panel, RGB Vertical strip,
normaly White, 20.1-Inch viewable,

0.258(H) X 0.258(V)mm Pixel Pitch

Scanning Frequency Horizontal : 30KHz ~ 81KHz(Automatic)

Vertical: 56Hz ~ 75Hz(Automatic)

Horizontal :30KHz ~ 81KHz(Automatic)

Vertical:56Hz ~ 75Hz(Automatic)

Display Colors 16.7 Million colors 16.7Million colors

Maximum resolution

Horizontal: 1680pixels

Vertical: 1050pixels

Horizontal : 1680pixels

Vertical:1050pixels

Input Signal Analog 0.7Vp-p±10% positive at

75Ω,internally terminated

Analog 0.7Vp-p±10% positive at
75Ω,internally terminated

Input Sync Signal Type: separate H/V,composite

Level : TTL Level

Type: separate H/V,composite

Level : TTL Level

Maximum Pixel Clock rate 146.250MHz 146.250MHz

Active Display
(Horizontal/Vertical)

473.76(H) X 296.1(V) 433.44(H) X 270.9(V)

AC power voltage &
Frequency

AC 110 ~ 240V, 50 ~ 60 Hz AC110 ~ 240V, 50 ~ 60Hz

Power Consumption

8⾘88⾘8

Dimensions Set
(W x D x H)

520x215x441.5mm (After installation stand)

520x86.5x373.5mm (Without stand)

486x215x417.5mm (After installation stand)

486x86x350mm (Without stand)

Weight Set

(After installation Stand)

5.8kg 5.6kg

TV System Tuning Frequency Synthesize

System PAL, SECEM

Sound MONO, STEREO, NICAM

2-2

2. Product specifications

Specifications

Item

Description

T220HD T200HD

Environmental Considerations Operating Temperature: 50˚C ~ 104˚F(10˚C ~ 40˚C)

Operating Humidity : 10% ~ 80%

Storage Temperature: -4˚C ~ 113˚C(-20˚C ~ 45˚C)

Storage Humidity: 5% ~ 95%

Antenna Input 75Ω

Sound Characteristic -MAX Internal speaker Out : Right : 3W / Left : 3W

-BASS Control Range : -8 dB ~ + 8dB

-TREBLE Control Range : -8 dB ~ +8 dB

-Headphone Out : 10 mW MAX

-Output Frequency : RF : 80 Hz ~ 15 kHz
A/V : 80 Hz ~ 20 kHz

2-3

2. Product specifications

2-2. Spec Comparison to the Old Models

Model T220HD / T200HD Curie (225MD)

Design

Screen Size 20” / 22” 22”

Frequency
Horizontal
Vertical
Display Color

30 ~ 81 kHz

56 ~ 75 Hz

16,777,216 colors

30 ~ 81 kHz

56 ~ 75 Hz

16,777,216 colors

PC Resolution
Maximum mode

WXGA, 1680 x 1050 @ 60 Hz 1680 x 1050

Input Signal
Sync Signal
Video Signal

H/V Separate, TTL, P. or N.

0.7 Vp-p @ 75ohm

H/V Separate, TTL, P. or N.

0.7 Vp-p @ 75ohm

Power Consumption
Normal
Power Saving

22” 58W < 2W
20” 50W < 2W

58W < 2W

*Color Effect

- Grey scale: Images are displayed in a grey tone on the screen.

- Green: Images are displayed in a green tone on the screen.

- Aqua: Images are displayed in a blue tone on the screen.

- Sepia: Images are displayed in a brown tone on the screen.
Image Size : : If the resolution is not wide resolution, this option allows the screen size to be selected as normal or wide.

2-4

2. Product specifications

2-3. Accessories

Product Description Ccde. No Remark

Remote Control

&

Batteries (AAA x 2)

BN59-00624A

Samsung Electronics

Service center

Power Cord 3903-000085

Stand Body BN96-07347B

Stand Base BN96-07345A

D-Sub Cable BN39-00244G

CBF SIGNAL-DVI(D) BN39-00246K

User’s Guide,

Monitor Driver,

Natural Color Pro Software

BN96-07540A

Cleaning Cloth BN63-01798A

ZTX

3. Disassembly and Assembly

3. Disassembly and Assembly

This section describes the disassembly and reassembly sequences for this monitor.

Warning: As this monitor has parts that are sensitive to static electricity, be careful when handling them.

3-1. Disassembly

Caution: 1. Turn the monitor off before beginning the disassembly process.

2. When disassembling the monitor, do not use any metal tools except for the provided jig.

3. Remove the signal cable and the power cord before beginning the disassembly.

Description Photo Screws

1. Place monitor face down on cushioned table.
Remove Stand, then remove 2 marked screws
from the rear cover.

Caution : If you do not tilt the stand and use too

much force to remove it, the connection
pin may break.

2. Remove the cover and the LCD panel using the
provided jig on both grooves at the bottom.

ZTYG

3. Disassembly and Assembly

Description Photo Screws

3. Insert a flat screwdriver into the groove and then

lift up and remove the cover.

4. After remove COVER-REAR, then disconnect
SPEAKER , FUNCTION wire.

5. Disconnect LVDS cable from panel.

ZTZ

3. Disassembly and Assembly

Description Photo Screws

6. After disconnecting SHIELD-LAMP of left side,
disassemble lamp wire between panel and IP
Board.

7. Remove 8 marked SCREW of left picture.
Disconnect IP board.

Ⲽ Reassembly procedures are in the reverse order

of disassembly procedures.

8. Remove the LCD panel.

ZT[G

3. Disassembly and Assembly

Description Photo Screws

9. Remove the IR module by tilting the left snap to
the right.

10. Remove the LED module by sliding the snap

designated in the right figure backwards.

11. Remove the two (2) screws and then remove the
holders from the four (4) snaps designated in the

right figure using the provided jig.

ZT\

3. Disassembly and Assembly

Description Photo Screws

12. Remove the two (2) connectors.

Caution : Servicing is not supported for the PCB.

ⶺ"TTFNCMZ

13. The assembly is in the reverse order of the
disassembly.

14. Connect the disassembled snap and the LED
module again.

15. Fix the connecting wire with filament tape

Caution : If the wire is damaged when closing the

cover, an operating error may occur.
Therefore, make sure to close the

cover after fixing it with filament tape.

filament tape

Ⲽ5IFBTTFNCMZJTJOUIFSFWFSTFPSEFSPGEJTBTTFNCMZ

ZT]G

3. Disassembly and Assembly

Memo

4-1

4. Troubleshooting

4. Troubleshooting

4-1. First Checklist for Troubleshooting

Check the various cable connections first.

- Check to see if there is a burnt or damaged cable.

- Check to see if there is a disconnected cable connection or a connection is too loose.

- Check to see if the cables are connected according to the connection diagram.

Check the power input to the Main Board.

Check the following circuits.

• No raster appears: Function PBA, Main PBA, I/P PBA

• 55V develop but no screen: Main PBA

• 5V does not develop: I/P PBA

Check the voltage in and out between the IP⳪ Main Board, between the IP⳪ Panel, and between the Main LVDS

Boards.

1.

2.

3.

4.

4-2

4. Troubleshooting

4-2. No Power

Symptom Though the power swtich on, the LED power off and the screen is blank.T

Major

checkpoints

Check Power cable.

Check whether the Lamp connector is connected correctly to the IP.

Check whether the power cable is connected correctly to the MAIN.

Check whether the Function cable is connected correctly to the MAIN.

T

T

T

T

Diagnostics

Main Board Front

CN1001

C1109

Yes

No

LAMP off, power indicator

LED red color?

Check a connection a

power cable.

Yes

No

Does proper DC 13V appear

at DC5V.

Change a Assy PCB Power.

Yes

No

Does proper DC13V appear

at C1004?

Change a Assy PCB Power.

Yes

No

Does proper DC3.3V, 1.2v appear

at C1109?

Check IC1013, IC1005.

Change a main PBA.

No

A power is supplied to set?

Check a other function.(No picture

part) Replace a lcd panel.

Caution Make sure to disconnect the power before working on the IP board.

4-3

4. Troubleshooting

4-2-1. Circuit diagrams when the power does not turn on

5:GND

4:GND

3:GND

9:ON/OFF

8:A-DIMMING

7:5.1V/3.0A

6:5.1V/3.0A

2:13V/0.65A

1:PWM

L:INVERTER ON
H:INVERTER OFF

1

1

2

1

R1004

2 1

C1004

2 1

C1005

MGND2 MGND1

9

8

7

6

5

4

3

2

1

CN1001

21

R1301

3

2

1

Q1005

1

2

1

R1001_DE

21

C1002

1

1
1

2 1

R1032

1 2 1

R1031

1

2 1

C1003

1

21

C1001_22

2 1

R1002

1/10W

0OHM

PWM_DIMMING_OUT

0OHM

100NF

4.7KOHM

FGND

A13V

B5V

25V

100NF

FGND

A5V

B5V

0OHM

4.7KOHM

4.7KOHM

SW_INVERTER

CN_SMD_S_009

FGND

FGND

1UF

50V

25V

100UF

KTC3875S-Y

6.3V

100UF

E

B

C

5A (MAX)

HIGH:ON
LOW:OFF

8
7
6
54

3

2

1

IC1023

TP1001

R1030

Q1006

R1043

C1107

R1040

C1120

BD1022

2 1

C1110

TP1002

3

2

1

IC1013

2 1

C1109

C1112

21

BD1034

6.3V

100UF

BEAD_CHIP

B3.3V_DTV

B3.3VD

100NF

25V

FGND

AP1084K33A

FGND FGNDFGND

B5V

BEAD_CHIP

100NF

25V

FGND

1/10W

10KOHM

FGND

2SC2412K-Q

SI4435BDY-T1-E3

POWER_ON

1/10W

10KOHM

1/10W

100KOHM

A5V

1UF
10V

6.3V

100UF

E

B

C

GND

OUTIN

4-4

4. Troubleshooting

4-3. No Video (Analog PC)

Symptom Though the LED power turns on, the screen is blank when connecting the VGA cable.T

Major

checkpoints

Even though the LED power turns on, the screen is blank when connecting the VGA cable.

Check the D-sub cable connections.

Check whether the LVDS cable is connected correctly to the panel.

Check whether the lamp connector of the panel is connected correctly to the IP board.

T

T

T

T

Diagnostics

Main Board Front

RA5008
RA5009
RA5010
RA5011
RA5012

IC5002

R3020
R3021
R3022

Yes

No

Check a PC source and check

the connection of DSUB cable?

Input a analog PC signal and

connected cable(DPMS).

Yes

No

ⴘDoes the sigmal appear at

R3020, R3021,R3022?

PC cable. Change a PC

cable. Change a main PCB ass’y.

Yes

No

Does the digital data appear at the

output of RA5008~RA5012?

Check IC5002.

Change a main PBA.

No

Check a LVDS cable?

Replace a lcd panel?

Please, Call to Samsung Co. LTD.

Yes

Power Indicator is off.

Lamp on, no video.

Caution Make sure to disconnect the power before working on the IP board.

4-5

4. Troubleshooting

4-3-1. Circuit diagrams and waveforms (Analog) when no screen is displayed

on the monitor

21 C5113

21 C5114_DE

21 R5085

21R5086

21

R5060_DE

21

R5034

2 1 C5039

21 R5043

21 C5058_DE

21 C5043

21 C5037

21 C5045

21

C5057

2 1R5035

21 C5044

21 C5041

2 1 C5055

21

R5050

21 C5066

21 R5051

2 1R5047

2 1R5044

21

C5042

21 C5065

2 1R5033

21 C5036

21 C5064

2 1R5045

21 C5040

21 C5035

21 R5049

21 R5042

56

55

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

21 C5063

21 C5061_DE

21 R5055

21 R5041_DE

21 C5046

21

R5057

21 C5062

21 R5040

2 1R5037

21 C5056

2 1R5036

21 C5060_DE

21 R5054

21 C5038

DTV_CVBS

25V47NF

25V47NF

1/10W100OHM

1/10W100OHM

100NF 25V

50V4.7NF

1/10W0OHM

47NF 25V

100NF 25V

1/10W47OHM

25V47NF

25V100NF

0OHM 1/10W

1/10W0OHM

100OHM 1/10W

1NF 50V

50V4.7NF

25V100NF

47OHM

25V47NF

25V47NF

100NF 25V

47NF 25V

47NF 25V

1/10W100OHM

47NF 25V

0OHM 1/10W

25V47NF

1/10W0OHM

1/10W100OHM

25V47NF

FGND

A3.3V

FGND

A3.3V_ADC

25V47NF

1/10W100OHM

1/10W470OHM

PC_V_SYNC

SC_CVBS_IN

VCOM1

PC_GREEN

PC_RED

SC_G

SC_R

SC_FB

SC_ID

SC_B

PC_BLUE

D2_DDC_SCL

D2_DDC_SDA

PC_H_SYNC

D2_HOT_PLUG

25V47NF

25V47NF

100OHM

1/10W100OHM

DTV_COMP_PB1

470OHM

100OHM 1/10W

DTV_COMP_Y1

1/10W100OHM

DTV_COMP_PR1

50V4.7NF

1NF50V

1/10W

390OHM

VCOM1

CVBS1

CVBS2

CVBS3

Y0

C0

Y1

C1

RIN2P

GIN2P

SOGIN2

BIN2P

VSYNC2

VSYNC0

HSYNC0

GND

AVDD_ADC

RIN0P

SOGIN0

GIN0P

VCOM2

BIN0P

VCOM3

GIN1P

SOGIN1

BIN1P

REFM

REFP

VCLAMP

VSYNC1

HSYNC1

DDCDA_CK

DDCDA_DA

REXT

RIN1P

DSUB_INPUT

1

21

C3106

21

R3036

2 1

R3031

8
7
6
5 4

3

2

1

IC3002

21

BD3102

21BD3101

21BD3100

1

1

1

1

MGND2

MGND1

9

8

7

6

5

4

3

2

15

14

13

12

11

10

1

CN3000

21

R3103

1

2

1

C3105

2

1

C3104

1

1

1

1

3

2

1

D3015

2 1

R3026

21

R3029

21

D3019

21

R3027

2 1

R3023

11

2

1

D3020

2

1

D3021

21

R3065

2

1

D3017

1

3

2

1

D3022

21R3060_DE

21

C3001

2 1

R3021

3

2

1

D3016

21R3028

1

3

2

1

D3014

3 2

1

Q3004

2 1

R3030

2

1

R3062

2 1

R3024

21

D3018

1

2 1

R3020

2 1

R3063

2 1

R3022

21

R3061_DE

2 1

R3025

2

1

R3064

2 1

C3002

3 2

1

Q3003

VLZ5V6B

5.6V

VLZ5V6B

5.6V

VLZ5V6B

5.6V

VLZ5V6B

5.6V

VLZ5V6B

5.6V

AT24C02N-10SC

-

DDC_WP

PC_BLUE

SCL_RXD

SDA_TXD

PC_GREEN

PC_RED

IDENT_PC

PC_V_SYNC

PC_H_SYNC

PC_5V

47OHM

1/10W75OHM

100V BAV99

-

FGND

FGND

50V

22PF

2.7KOHM

10KOHM

1/10W

BAV99

100V

BEAD_CHIP

BEAD_CHIP

BEAD_CHIP

FGND

100OHM

4.7KOHM 1/10W

100OHM

1/10W

1/10W10KOHM

FGND

100NF

25V

FGND

FGND

105-15202L88901-LF

22OHM

100PF

50V

100PF 50V

B5V_VCCA

-

-

-

-

2N7002

DDC_VCC

75OHM 1/10W

DDC_VCC

4.7KOHM 1/10W

A3.3V

75OHM 1/10W

-

BAV99

100V

47OHM

1KOHM

1/10W22OHM

10KOHM 1/10W

100OHM

1/10W

5.6VBZX84C5V6

100OHM

10V10UF

100OHM

D

S

G

SDA VSS

MODE,/WC

VCC

SCL E2

E1

E0

D

S

G

1

1

1111111111111111111

1

2 1

C5202

21

C5201

MGND2

MGND1

9

87654303

292827262524232221

20

2

191817161514131211

10

1

CN5002

8

6

4

2

753

1

RA5008

8

6

4

2

753

1

RA5012

8

6

4

2

753

1

RA5014

R5010

21

R5011

8

6

4

2

753

1

RA5009

1

R5004

8

6

4

2

753

1

RA5011

8

6

4

2

753

1

RA5015

8

6

4

2

753

1

RA5010

1

R5003_DE

CN_SMD_S_03010031HR-30

FGND

10KOHM

10KOHM

1/16W

100OHM

1/16W

1/16W47OHM

47OHM 1/16W

1/16W47OHM

100OHM 1/10W

100OHM

100OHM 1/16W

47OHM 1/16W

47OHM 1/16W

VDDC

A3.3V_VDDP

A3.3V

PANEL_VCC

10NF

50V

FGND FGND

UART_SEL2

SPDIF_OUT

TV_DTV_SEL

MSTAR_H_OUT

AMP_RESET

EEPROM_WP

SW_INVERTER

DTV_RX

DTV_TX

16V

100UF

4-6

4. Troubleshooting

4-3-2. Waveforms when no screen is displayed (Analog PC)

ⴘ

3(#0VUQVU4JHOBMPG*$

4-7

4. Troubleshooting

4-4. No Video (Digital-HDMI)

Symptom

The LED power turns on but the screen is blank when the DVI cable or HDMI cable is connected.

T

Major

checkpoints

Even though the LED power turns on, the screen is blank when connecting the DVI cable or
HDMI cable.

Check the DVI cable or HDMI cable connections.

Check whether the LVDS cable is connected correctly to the panel.

Check whether the lamp connector of the panel is connected correctly to the IP board.

T

T

T

T

Diagnostics

Main Board Front

IC3250

IC5002

D3006~D3013

D3204~D3211

Yes

No

Check the connection

of HDMI cable?

Input a HDMI cable.

Yes

No

ⴚ%PFTUIFEJHJUBMEBUBBQQFBS

BU%_%)%.*PS

%_%)%.*

Check HDMI cable.

Change the cable.

Yes

No

ⴙDoes the digital data appear at

output of IC3250 (PIN43,42,40,39,

37,36,34,33)?

Check the IC3250.

Change a main PBA.

No

Does the digital data appear at

output of IC5002?

Check the IC5002.

Change a main PBA.

Yes

Power Indicator is off.

Lamp on, no video.

Yes

No

Check a LVDS cable?

Replace lcd panel?

Please, Call to Samsung Co. LTD.

Caution Make sure to disconnect the power before working on the IP board.

4-8

4. Troubleshooting

4-4-1. Circuit diagrams and waveforms (Digital-HDMI) when no screen is

displayed on the monitor

HDMI_INPUT1

21

D3002

MGND5

MGND4

MGND3

MGND2

MGND1

9
8
7
6
5
4
3

21

20

2

19
18
17
16
15
14
13
12
11
10

1

CN3001

8
7
6
5 4

3

2

1

IC3001

111

1

1

2

1

C3025_DE

21

R3019

2 1

C3021_DE

21

R3012

2 1

D3044_DE

2 1C3029_DE

2 1

C3027_DE

2 1

C3023_DE

21R3004

3

2

1

D3009

2 1

C3030_DE

2 1

C3022_DE

2 1

C3026_DE

21R3016

21

R3011

3

2

1

D3006

21R3015

21R3003

21

R3018

2 1

C3019

21

R3013

21

R3066

3

2

1

D3011

2 1

R3057

2 1

R3009

2

1

C3024_DE

2 1

D3043_DE

2 1

C3028_DE

21R3005

21R3002

2 1

D3005

21R3007

3

2

1

D3013

21R3001

3

2

1

D3003

3

2

1

D3012

32

1

Q3001

21R3017

21R3006

21

R3010

3

2

1

D3001

3

2

1

D3007

3

2

1

D3010

3

2

1

D3004

21R3008

21R3014

3

2

1

D3008

2 1

C3020

VLZ6V2B 6.2V

VLZ6V2B 6.2V

VLZ5V6B

5.6V

VLZ6V2B

0OHM

AT24C02N-10SC

HDMI1_RX2+

HDMI1_RX2-

HDMI1_RX1+

HDMI1_RXCLK-

HDMI1_RX1-

HDMI1_RX0-

HDMI1_RXCLK+

HDMI1_RX0+

HDMI1_DDC_SDA
HDMI1_DDC_SCL

HDMI1_5V

HDMI1_HOT_PLUG

IDENT_HDMI1

DDC_WP

100NF 16V

1/10W0OHM

1/10W0OHM

1/10W0OHM

BAV99

100V

3701-001367

1/10W0OHM

BAV99

100V

BAV99

100V

2N7002

1/10W47OHM

25V100NF

1/10W0OHM

1/10W0OHM

8.2V

RLZ8.2

FGND

FGND

FGND

FGND

FGND

BAV99

100V

BAV99

100V

A3.3V

DDC_VCC

16V

100NF

10KOHM 1/10W

100NF16V

1/10W4.7KOHM

100NF 16V

BAV99

100V

100NF

16V

16V100NF

0OHM 1/10W

BAV99

100V

0OHM 1/10W

16V100NF

16V100NF

1/10W22OHM

100NF16V

1/10W47OHM

10OHM 1/10W

BAV99

100V

22OHM 1/10W

1/10W0OHM

100V

BAV99

10KOHM 1/10W

10V10UF

100OHM 1/10W

BAV99

100V

1/10W

10KOHM

1/10W1KOHM

16V

100NF

SDA VSS

MODE,/WC

VCC

SCL E2

E1

E0

D

S

G

SIDE_HDMI_INPUT2

MGND5

MGND4

MGND3

MGND2

MGND1

9
8

7

6

5
4
3
2

19

18

17
16
15
14

13

12

11
10

1

CN3004

8
7
6
5 4

3

2

1

IC3003

2 1

D3212_DE

2 1C3210_DE

2 1

D3213_DE

2 1C3211_DE

21R3218

21R3217

21R3216

21R3215
21R3214

21R3213

21R3212

21R3211

2

1

D3214

2 1

C3202_DE

2 1

C3203_DE

2 1

C3204_DE

2 1

C3205_DE

2 1

C3206_DE

3

2

1

D3204

3

2

1

D3205

3

2

1

D3206

3

2

1

D3207

3

2

1

D3208

2 1

C3207_DE

2 1

C3208_DE

2 1

C3209_DE

21

R3219

3

2

1

D3209

3

2

1

D3210

3

2

1

D3211

2 1

R3206

21

R3202

3

2

1

D3200

21

D3201

21

R3205

21

R3207

32

1

Q3200

3

2

1

D3202

21

R3210

21R3209

21R3208

3

2

1

D3203

2 1

C3200

2 1

R3220

2 1

C3201

21

R3200

21

R3204

21

R3203

21

R3201

111

1

1

VLZ6V2B 6.2V

VLZ6V2B

6.2V

VLZ6V2B

6.2V

VLZ5V6B

5.6V

100NF

HDMI2_HOT_PLUG

HDMI2_RX0+

HDMI2_RX1-

HDMI2_RX0-

HDMI2_RXCLK-

DDC_WP

HDMI2_DDC_SCL

HDMI2_DDC_SDA

HDMI2_RX1+

HDMI2_RX2+

HDMI2_RXCLK+

HDMI2_5V

HDMI2_RX2-

IDENT_HDMI2

3701-001388

SP06-14555-02

FGND

100NF 16V

100NF

16V

1/10W0OHM

1/10W0OHM

0OHM 1/10W

1/10W0OHM
1/10W0OHM

0OHM 1/10W

1/10W0OHM

0OHM 1/10W

FGND

16V100NF

16V

100NF16V

16V100NF

100NF 16V

100V

BAV99

100V

BAV99

BAV99

100V

BAV99

100V

100V

BAV99

16V100NF

100NF 16V

100NF 16V

A3.3V

BAV99

100V

100V

BAV99

BAV99

100V

1/10W1KOHM

1/10W0OHM

FGND

RLZ8.2

8.2V

10OHM 1/10W

4.7KOHM 1/10W

2N7002

100V

BAV99

1/10W100OHM

22OHM 1/10W

22OHM 1/10W

BAV99

100V

FGND

10UF 10V

DDC_VCC

10KOHM

1/10W

25V100NF

1/10W10KOHM

1/10W47OHM

1/10W47OHM

1/10W10KOHM

FGND

AT24C02N-10SC

1/10W

0OHM

1/10W

SDA VSS

MODE,/WC

VCC

SCL E2

E1

E0

D

S

G

OPTION

OE

0
0
0

SEL1

1
0

SEL2

X
1
0

HPDA HPDB

HPD_SINK

L
L

HPD_SINK

L

L0

SEL2_HDMI

0

OC_S2 OC_S1 OC_S0

0 0

V_SWING

500

DE_EMPHASIS

0

21

R3265_DE

2

1

R3267_DE

21

R3268

2

1

R3264

2

1

R3254

2 1

R3253

3

2

1

Q3201

21

R3256_DE

21

R3257_DE

21

R3258_DE

21

R3261

21

R3260

21

R3259

21

C3253

21

R3250_DE

21

R3251

2 1

C3250

2 1

C3251

2 1

BD3250

MGND1

9

8

7

6

565554

53

52

51

50549484746454443

42
41

40

4 39

38
37
36
35
34
33
32
31
30

3

29

28

272625

24

23

22

21

202191817

16

15

14

13

12

11

10

1

IC3250

B3.3V_H

B3.3V_H

B3.3V_H

B3.3V_H

B3.3V_H

HDMI1_RXCLK+

HDMI1_RXCLK-

HDMI1_DDC_SCL

HDMI1_DDC_SDA

SEL1_HDMI

0OHM

FGND FGND

0OHM

0OHM

0OHM

4.7KOHM

10KOHM1/10W

FGND

KTC3875S-Y

FGNDFGNDFGND

0OHM

0OHM

0OHM0OHM

0OHM

0OHM

FGND

50V

1NF 1/10W

1.8KOHM

FGND

1.5KOHM

1/10W

FGND

FGND

10UF

10V

100NF 25V

BEAD_CHIP

HDMI1_RX1+

HDMI1_RX1-

HDMI1_RX0+

HDMI1_RX0-

HDMI1_HOT_PLUG

D2_HOT_PLUG

D2_DDC_SDA

D2_DDC_SCL

D2_RXCLK-

D2_RX0­D2_RX0+

D2_RX1­D2_RX1+

D2_RX2­D2_RX2+

HDMI2_DDC_SCL

HDMI2_DDC_SDA

HDMI2_HOT_PLUG

HDMI2_RX2+

HDMI2_RX2-

HDMI2_RX1+

HDMI2_RX1-

HDMI2_RX0+

HDMI2_RX0-

HDMI2_RXCLK+

HDMI2_RXCLK-

HDMI1_RX2+

HDMI1_RX2-

PI3HDMI201ZFE

D2_RXCLK+

E

B

C

D2-A

D2+A

GND

CLK-B

CLK+B

VDD

D0-B

D0+B

GND

D1-B

D1+B

VDD

D2-B

D2+B

GND

HPDB

SDAB

SCLB

EQ_S1

SEL2

EQ_S0

OC_S2

OC_S1

OC_S0

GND

D2+

D2-

VDD

D1+

D1-

GND

D0+

D0-

VDD

CLK+

CLK-

GND

SCL_SINK

SDA_SINK

HPD_SINK

VDD

SEL1

OE#

HPDA

SDAA

SCLA

GND

CLK-A

CLK+A

D0-A

D0+A

GND

D1-A

D1+A

VDD

VDD

4-9

4. Troubleshooting

4-4-2. Waveforms when a blank screen is displayed (Digital-HDMI)

ⴙ

%JHJUBM0VUQVU%BUBPG*$

ⴚ

4JHOBMPG)%.*%BUB

4-10

4. Troubleshooting

4-5. No Picture (Tuner_CVBS)

Symptom The LED power turns on but the screen is blank when the RF cable is connected.T

Major

checkpoints

Even though the LED power turns on, the screen is blank when connecting the RF cable.

Check the RF cable connections.

Check whether the LVDS cable is connected correctly to the panel.

Check whether the lamp connector of the panel is connected correctly to the IP board.

T

T

T

T

Diagnostics

Main Board Front

TU6001

Yes

No

Power Indicator is off.

Lamp on, no picure.

Connect the RF cable and

check RF signal.

Yes

No

ⴛ%PFTUIFTJHOBMBQQFBSBU

-

Check the Tuner Vcc 5V.

Change a main PBA.

Yes

No

ⴛ%PFTUIFTJHOBMBQQFBSBU

PG56

Change a main PCB ass’y.

No

ⴚDoes the digital data appear

at output of RA5008 ~RA5012?

Check a IC5002.

Change a main PCB ass’y.

Yes

No

Check a LVDS cable?

Replacea lcd panel?

Please, Call to Samsung Co. LTD.

Caution Make sure to disconnect the power before working on the IP board.