Samsung UA28F4000AR Schematic

LED TV

Chassis : U86B Model : UA19F4000AR

UA28F4000AR UA28F4100AR UA22F5000AR UA22F5100AR

SERVICE

LED TV Contents

1. Precautions

2. Product specications

3. Disassembly and Reassembly

4. Troubleshooting

5. Wiring Diagram

Manual

UA22F5000AR

Contents

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

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

1-2. Servicing Precautions ..........................................................................................................1-3

1-3. Static Electricity Precautions ...............................................................................................1-4

1-4. Installation Precautions .......................................................................................................1-5

2. Product Specications.................................................................................................2-1

2-1. Product Information .............................................................................................................2-1

2-2. Accessories .........................................................................................................................2-9

3. Disassembly and Reassembly ....................................................................................3-1

3-1. Disassembly and Reassembly ............................................................................................3-1

3-2. Assy Board P-Jog Switch & Ir ..............................................................................................3-5

3-3. Disassembly(PTC) ...............................................................................................................3-7

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

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

4-2. How to Check Fault Symptom .............................................................................................4-5

4-3. Factory Mode Adjustments .................................................................................................. 4-9

4-4. White Balance ...................................................................................................................4-24

4-5. White Ratio (Balance) Adjustment .....................................................................................4-27

4-6. Detail Specications ..........................................................................................................4-29

4-7. Software Upgrade ..............................................................................................................4-73

4-8. Rear Cover Dimension ......................................................................................................4-75

5. Wiring Diagram .............................................................................................................5-1

5-1. Wiring Diagram .................................................................................................................... 5-1

5-2. Connector ...........................................................................................................................5-3

5-3. Connector Functions ...........................................................................................................5-6

5-4. Cables .................................................................................................................................5-7

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.

Printed in Korea

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.

WARNING

1-1-2. Servicing the LED TV

When servicing the LED TV, Disconnect the AC line cord from the AC outlet.1.

It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this 2. 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 1. chassis and other metal parts in the monitor.

Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and 2. compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc.

Leakage Current Hot Check:3.

Disconnect the AC power and DC power jack before servicing.

(READING SHOULD)

DEVICE UNDER

TEST

ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)

NOT BE ABOVE 0.5mA

2-WIRE CORD

TEST ALL

EXPOSED METAL

SURFACES

LEAKAGE CURRENT

TESTER

EARTH

GROUND

Do not use an isolation transformer during this test.

Use a leakage current tester or a metering system that complies with American National Standards

WARNING

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 rst 4.

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

1-2

1. Precautions

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 identied 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, re and/or other hazards. Product safety is under review continuously and new instructions are issued whenever

appropriate.

1-3

1. Precautions

1-2. Servicing Precautions

An electrolytic capacitor installed with the wrong polarity might explode.

WARNING

Before servicing units covered by this service manual, read and follow the Safety Precautions section of

CAUTION

NOTE

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 1. 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. 2. 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 3. 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 4. terminals and earphone jacks).

Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect 5. 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; 6. always remove the instrument’s ground lead last.

this manual.

If unforeseen circumstances create conict between the following servicing precautions and any of the

safety precautions, always follow the safety precautions.

1-4

1. Precautions

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 eld-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 1. 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 2. accumulation of an electrostatic charge.

Do not use freon-propelled chemicals. These can generate electrical charges sufcient to damage ESDs.3.

Use only a grounded-tip soldering iron to solder or desolder ESDs.4.

Use only an anti-static solder removal device. Some solder removal devices not classied as “anti-static” can generate 5. electrical charges sufcient to damage ESDs.

Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs 6. 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 7. to the chassis or circuit assembly into which the device will be installed.

Be sure no power is applied to the chassis or circuit and observe all other safety precautions.

CAUTION

Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or 8.

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

1-5

1. Precautions

1-4. Installation Precautions

For safety reasons, more than a people are required for carrying the product.1.

Keep the power cord away from any heat emitting devices, as a melted covering may cause re or electric shock.2.

Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature 3.

may cause re.

Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed 4.

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

Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check 5.

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

shock.

Keep the antenna far away from any high-voltage cables and install it rmly. Contact with the highvoltage cable or the 6. antenna falling over may cause re or electric shock.

When installing the product, leave enough space (0.4m) between the product and the wall for ventilation purposes. 7.

A rise in temperature within the product may cause re.

2. Product Specications

2-1. Product Information

2-1-1. Model Comparison

Model UA22F5000AR / UA22F5100AR

2. Product specications

Front View

Detail View

Front Color Black (Panel)

Set with

Dimensions

(W x H x D)

Weight 22"

Panel Type Anti Glare

22"

Stand

Set without

Stand

Set with

Stand

Set without

Stand

513.1 x 366.5 x 169.6 mm / 20.2 x 14.4 x 6.7 inches

513.1 x 321.5 x 43.8 mm / 20.2 x 12.7 x 1.7 inches

* W : Width H : High D : Depth

2.9 kg / 6.4 lbs

2.6 kg / 5.7 lbs

Internal Memory 128 Mbyte

DDR 256 Mbyte

Feature Media Play, Magic Angle

2-1

2-2

2. Product specications

Model UA**F4000AR / UA**F4100AR

Front View

* W : Width H : High D : Depth

Detail View

Front Color Black (Panel)

Dimensions

(W x H x D)

19"

28"

Set with

Stand

Set without

Stand

Set with

Stand

Set without

Stand

Set with

Stand

453.7 x 314.2 x 151.4 mm / 17.9 x 12.4 x 6.0 inches

453.7 x 281.3 x 49.5 mm / 17.9 x 11.1 x 1.9 inches

645.0 x 435.6 x 252.6 mm / 25.4 x 17.1 x 9.9 inches

645.0 x 384.9 x 49.5 mm / 25.4 x 15.2 x 1.9 inches

2.6 kg / 5.7 lbs

19"

Set without

Stand

2.5 kg / 5.5 lbs

Weight

Set with

Stand

4.7 kg / 10.4 lbs

28"

Set without

Stand

4.2 kg / 9.3 lbs

Panel Type Anti Glare

Internal Memory 128 Mbyte

DDR 256 Mbyte

Feature Media Play, Magic Angle(19")

2-3

2. Product specications

2-1-2. Feature & Specications

Model UA22F5000AR / UA22F5100AR

Feature

Digital-TV, RF, 2-HDMI, 1-Component, 1-A/V(Common Use for Component Y), 1-USB2.0, Headphone•

Brightness : 250 cd/m•

Dynamic Contrast Ratio : Mega DCR•

Response Time : 6.5 ms•

CMR : 100•

Item Description

LCD Panel 21.5 inch FHD 60Hz

Scanning Frequency Horizontal : 60 kHz ~ 73 kHz (Automatic)

Display Colors 16.7M colors

Maximum Resolution Horizontal : 1920 Pixels

Specications

Vertical : 47 Hz ~ 63 Hz (Automatic)

Vertical : 1080 Pixels

Input Signal Analog 0.7 Vp-p ± 5% positive at 75Ω, internally terminated

Input Sync Signal H/V Separate, TTL, P. or N.

Maximum Pixel Clock Rate 74.25 MHz

Active Display (H x V)*

* Horizontal x Vertical

476.6(H) X 268.1(V) (mm) / 18.8(H) X 10.6(V) (inches)

AC Power Voltage & Frequency AC 110V ~ 240V, 50/60 Hz

Power Consumption 35 W (Under 0.3 W, Stand by), (DC 14V)

Dimensions Set (W x H x D)*

* Width x High x Depth

Set with Stand 513.1 x 366.5 x 169.6 mm / 20.2 x 14.4 x 6.7 inches

Set without

Stand

513.1 x 321.5 x 43.8 mm / 20.2 x 12.7 x 1.7 inches

Weight Set with Stand 2.9 kg / 6.4 lbs

Set without

Stand

2.6 kg / 5.7 lbs

TV System Tuning Frequency Synthesize (Refer to detailed Frequency Table)

System PAL , SECAM , NT4.43, NT3.58

Sound PAL-B/G/I/D/K, Dolby Digital Plus/Pulse

2-4

2. Product specications

Specications

Item Description

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

Operating Humidity : 10% ~ 80%, non-condensing

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

Storage Humidity : 5% ~ 95%, non-condensing

Audio Specications MAX Internal Audio Output Power : Each 3 W(Left/Right)

Equalizer : 5 Band

Output Frequency :

RF : 20 Hz ~ 15.4 kHz•

AV/Componet/HDMI : 20 Hz ~ 20 kHz•

Note : Dolby Digital Plus/Pulse, USB2.0, Film mode, Energy Saving, Eco sensor, Magic Angle

2-5

2. Product specications

Model UA19F4000AR

Feature

Digital-TV, RF, 2-HDMI, 1-Component, 1-A/V(Common Use for Component Y), 1-USB2.0, Headphone•

Brightness : 250 cd/m•

Dynamic Contrast Ratio : Mega DCR•

Response Time : 6.5 ms•

CMR : 100•

Specications

Item Description

LCD Panel 18.5 inch HD 60Hz

Scanning Frequency Horizontal : 60 kHz ~ 73 kHz (Automatic)

Vertical : 47 Hz ~ 63 Hz (Automatic)

Display Colors 16.7M colors

Maximum Resolution Horizontal : 1366 Pixels

Vertical : 768 Pixels

Input Signal Analog 0.7 Vp-p ± 5% positive at 75Ω, internally terminated

Input Sync Signal H/V Separate, TTL, P. or N.

Maximum Pixel Clock Rate 74.25 MHz

Active Display (H x V)*

* Horizontal x Vertical

409.8(H) X 230.4(V) (mm) / 16.1(H) X 9.1(V) (inches)

AC Power Voltage & Frequency AC 110V ~ 240V, 50/60 Hz

Power Consumption 35 W (Under 0.3 W, Stand by), (DC 14V)

Dimensions Set (W x H x D)*

* Width x High x Depth

Set with Stand 453.7 x 314.2 x 151.4 mm / 17.9 x 12.4 x 6.0 inches

Set without

Stand

453.7 x 281.3 x 49.5 mm / 29.1 x 11.1 x 1.9 inches

Weight Set with Stand 2.6 kg / 5.7 lbs

Set without

Stand

2.5 kg / 5.5 lbs

TV System Tuning Frequency Synthesize (Refer to detailed Frequency Table)

System PAL , SECAM , NT4.43, NT3.58

Sound PAL-B/G/I/D/K, Dolby Digital Plus/Pulse

2-6

2. Product specications

Specications

Item Description

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

Operating Humidity : 10% ~ 80%, non-condensing

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

Storage Humidity : 5% ~ 95%, non-condensing

Audio Specications MAX Internal Audio Output Power : Each 3 W(Left/Right)

Equalizer : 5 Band

Output Frequency :

RF : 20 Hz ~ 15.4 kHz•

AV/Componet/HDMI : 20 Hz ~ 20 kHz•

Note : Dolby Digital Plus/Pulse, USB2.0, Film mode, Energy Saving, Magic Angle

2-7

2. Product specications

Model UA28F4000AR / UA28F4100AR

Feature

Digital-TV, RF, 2-HDMI, 1-Component, 1-A/V(Common Use for Component Y), 1-USB2.0, Headphone•

Brightness : 250 cd/m•

Dynamic Contrast Ratio : Mega DCR•

Response Time : 6.5 ms•

CMR : 100•

Specications

Item Description

LCD Panel 27.5 inch HD 60Hz

Scanning Frequency Horizontal : 60 kHz ~ 73 kHz (Automatic)

Vertical : 47 Hz ~ 63 Hz (Automatic)

Display Colors 16.7M colors

Maximum Resolution Horizontal : 1366 Pixels

Vertical : 768 Pixels

Input Signal Analog 0.7 Vp-p ± 5% positive at 75Ω, internally terminated

Input Sync Signal H/V Separate, TTL, P. or N.

Maximum Pixel Clock Rate 74.25 MHz

Active Display (H x V)*

* Horizontal x Vertical

607.5(H) X 345.0(V) (mm) / 23.9(H) X 14.1(V) (inches)

AC Power Voltage & Frequency AC 110V ~ 240V, 50/60 Hz

Power Consumption 46 W (Under 0.3 W, Stand by), (AC 220-240V, 50/60Hz)

47 W (Under 0.3 W, Stand by), (AC 100-240V, 50/60Hz)

Dimensions Set (W x H x D)*

* Width x High x Depth

Set with Stand 645.0 x 435.6 x 252.6 mm / 25.4 x 17.1 x 9.9 inches

Set without

Stand

645.0 x 384.9 x 49.5 mm / 25.4 x 15.2 x1.9 inches

Weight Set with Stand 4.7 kg / 10.4 lbs

Set without

Stand

4.2 kg / 9.3 lbs

TV System Tuning Frequency Synthesize (Refer to detailed Frequency Table)

System PAL , SECAM , NT4.43, NT3.58

Sound PAL-B/G/I/D/K, Dolby Digital Plus/Pulse

2-8

2. Product specications

Specications

Item Description

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

Operating Humidity : 10% ~ 80%, non-condensing

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

Storage Humidity : 5% ~ 95%, non-condensing

Audio Specications MAX Internal Audio Output Power : Each 3 W(Left/Right)

Equalizer : 5 Band

Output Frequency :

RF : 20 Hz ~ 15.4 kHz•

AV/Componet/HDMI : 20 Hz ~ 20 kHz•

Note : Dolby Digital Plus/Pulse, USB2.0, Film mode, Energy Saving

2-9

2. Product specications

2-2. Accessories

Product Description Code. No Remark

Remote Control & Batteries

(AAA x 2)

Power Cord 3903-000843

Owners Manual BN68-04789A

AA59-00802A

Samsung Electronics

Service center

3. Disassembly and Reassemble

3. Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the LED TV.

This LED TV contains electrostatically sensitive devices. Use caution when handling these components.

WARNING

3-1. Disassembly and Reassembly

Disconnect the LED TV from the power source before disassembly.1.

Follow these directions carefully; never use metal instruments to pry apart the cabinet.2.

CAUTION

UA22F5000AR 

Place TV face down on cushioned table.

If there is no additional coment, it is same for all inches.3.

Description Picture Description Screws

Remove 5 screws of Rear Cover.

Remove the Rear Cover.

6003-001782

3-1

3-2

3. Disassembly and Reassemble

Description Picture Description Screws

Remove 5 screws of Main Board and

Function Assy.

Remove the Speakers, Function Assy

Cable, LVDS Cable and BackLight Cable.

6001-003016

Completed disassembly.

UA28F4000AR 

Description Picture Description Screws

Place TV face down on cushioned table.

Remove 3 screws from the Stand and

Remove Stand.

6003-001782

3-3

3. Disassembly and Reassemble

Description Picture Description Screws

Remove 10 screws of Rear Cover.

Remove the Cover Jack and Function

Assy Cable

6003-001782

6003-002755

Remove the Rear Cover.

Remove 9 screws of Main Board and

Power Board.

Remove the Speakers, Power Cables,

LVDS Cable and Panel Drive Cable.

6001-003016

3-4

3. Disassembly and Reassemble

Description Picture Description Screws

Completed disassembly.

NOTE

Reassembly procedures are in the reverse order of disassembly procedures.

Screw Size 

Code No. COLOR A (mm) B (mm) C (mm) Q'ty Screw Image

6003-001782 BLACK 7.80~8.30 11.20~12.00 3.81~3.91

6001-003016

6003-000115 BLACK 5.8~6.3 5.5~6.0 2.95~3.05

WHITE 7.1~7.5

4.7~5.0 2.92 ~ 2.98

19" : 5EA 22" : 5EA 28" : 7EA

19" : 4EA 22" : 5EA 28" : 9EA

19" : 2EA 28" : 2EA

3-5

3. Disassembly and Reassemble

3-2. Assy Board P-Jog Switch & Ir

How to disassembly 

Description Picture Description Refer

Loosen 2 screws.

Pull out a jog function.

3-6

3. Disassembly and Reassemble

How to assembly 

Description Picture Description Refer

Insert a jog function.

Put 2 screws.

Press the function assy into the cabinet

until locked

When you want to ignore the funtion key actions

Option

Control

Debug

SVC

ADC/WB

Advanced

Engineer Option Type of PANEL KEY

5 way : IR + Key

Old : Touch Function (C model) Key

IR Only : Do not work Function key

[ Default ]

3-7

3. Disassembly and Reassemble

3-3. Disassembly(PTC)

How to disassembly 

Description Picture Description Refer

Place TV face up on cushioned table.

Products at the top of the central TOP-

CHASSIS is rotated by 45 degrees outward and pulls.

3-8

3. Disassembly and Reassemble

Description Picture Description Refer

Pull in the same way from the center of the

top.

Pull the left part of the product as shown

while holding the raised portion on gure 3.

Pull the bottom part of the product as

gure 2 while holding the raised portion on gure 4.

3-9

3. Disassembly and Reassemble

Description Picture Description Refer

As shown in the picture, Lift the bottom of

the TOP-CHASSIS.

Pull the products at the bottom of the right

side of the chassis.

3. Disassembly and Reassemble

Description Picture Description Refer

Lift the bottom of the chassis with one

hand and holding the bottom of the product after you pull the right side of the product chassis.

Disassembly is complete.

CAUTION

To use JIG : Does not lift the chassis by hand, JIG using the lift.

NOTE

Reassembly procedures are in the reverse order of disassembly procedures.

3-10

4. Troubleshooting

4-1. Troubleshooting

Previous Check 

Check the various cable connections rst.1.

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

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

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

Check the power input to the Main Board.2.

SMPS Model (UA28F4000A) -

4. Troubleshooting

Main Ass’y

Adaptor Model (UA19F4000A/UA22F5000A) -

BackLight Cable

14P Cable

LVDS Cable

Speaker

Main Ass’y

Power Ass’y

LVDS Cable

Speaker

Main Board Assy (CN201)

13 B13V 14 PWM_DIM

11 B13V 12 B13V

9 B13VS 10 SW_INV

7 B13VS 8 GND

5 GND 6 GND

3 B5.3V 4 A5.3V

1 B5.3V 2 SW_PW

* Change the 14Pin to PWM_DIM(2013 years) from B13V(2012 years)

Check the power in & output between IP & Main Board, Main Board & Panel, IP & Panel.3.

Power Board Assy (CNM803)

14 PS ON/OFF 13 B5V

12 A5V 11 B5V

10 GND 9 GND

8 GND 7 Vamp

6 BLU_ON/OFF 5 Vamp

4 ECO_ON/OFF 3 B13V

2 PWM_DIM 1 B13V

4-1

4-2

4. Troubleshooting

How to know it is from Main Board or T-Con when some problems happen 

No Picture : Backlight is on, but there is no picture and LED indicator in front of TV is blinking.1.

Check the LVDS Cable connection. If still problems, change the T-Con Board and then Main Board step by step. -

Picture distortion : Enter the service mode 2. ⇢ Choose ‘SVC’ ⇢ Check the ‘internal pattern.’

Enter ‘Service Mode.’ -

If you do not have Factory remote control•

Power OFF Info MENU Mute Power On

If you have Factory remote control•

INFO Factory

Choose ‘SVC.’3.

Choose ‘Test pattern.’4.

Select the each pattern and then check all pattern is ok or not.5.

Option

Control

Debug

SVC

ADC/WB

Advanced

Pattern Status is Change the Test Pattern is made by the MSTAR IC

OK Main Board We guess front of MSTAR IC has problem.

NG Panel and T-Con Board We guess back of MSATR IC has problem.

Test Pattern Mstar Test Pattern

4-3

4. Troubleshooting

Power-Tree 

+ 79 hidden pages