Samsung UE49NU7172U User manual

UHD TV
SERVICEManual
UHD TV Contents
1. Precautions
2. Product specications
3. Disassembly and Reassembly
4. Troubleshooting
5. Wiring Diagram
UE**NU7172U
Project : UNU7100X
Chassis : UWX80
Model : UE49NU7172U
UE55NU7172U
UE58NU7172U
UE65NU7172U
UE75NU7172U

Contents
1. Precautions....................................................................................................................... 1-1
1-1. Safety Precautions .......................................................................................................................1-1
1-1-1. Warnings.............................................................................................................................1-1
1-1-2. Servicing the LED TV........................................................................................................1-1
1-1-3. Fire and Shock Hazard......................................................................................................1-1
1-1-4. Product Safety Notices.................................................................................................... 1-2
1-2. Servicing Precautions................................................................................................................. 1-3
1-2-1. General 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. Product specication.................................................................................................................. 2-3
2-3. Accessories................................................................................................................................ 2-19
2-4. Viewing the Functions..............................................................................................................2-20
2-5. The Remote Control..................................................................................................................2-24
3. Disassembly and Reassemble........................................................................................ 3-1
3-1. Disassembly ................................................................................................................................. 3-1
4. Troubleshooting .............................................................................................................. 4-1
4-1. Power............................................................................................................................................. 4-1
4-1-1. Function Control Operation Test ................................................................................... 4-1
4-1-2. TV POWER STANDBY TEST............................................................................................4-2
4-1-3. TV POWER ON SEQUENCE TEST..................................................................................4-4
4-1-4. SMPS/PANEL BACKLIGHT TEST (Parallel Wired SMPS Panel Connections) .........4-6
4-2. Video .............................................................................................................................................4-8
4-2-1. Customer Picture Test.....................................................................................................4-8
4-2-2. Check Test Patterns........................................................................................................4-9
4-2-3. MAIN/T-CON BOARD....................................................................................................4-10
4-3. Audio ........................................................................................................................................... 4-13
4-4. Network...................................................................................................................................... 4-14
4-5. Smart Hub .................................................................................................................................. 4-15
4-6. Factory Mode............................................................................................................................. 4-17
4-7. Factory Mode Adjustments ......................................................................................................4-23
4-7-1. Entering Factory Mode..................................................................................................4-23
4-7-2. Detail Factory Option....................................................................................................4-24
4-7-3. Factory Data .................................................................................................................. 4-30
4-8. Replacing Main Board..............................................................................................................4-43
4-9. White Balance............................................................................................................................4-45
4-9-1. Calibration......................................................................................................................4-45
4-9-2. Service Adjustment......................................................................................................4-45
4-9-3. Adjustment ....................................................................................................................4-47

4-10. LED Indicator Test .................................................................................................................. 4-48
4-10-1. Diagnostic Methods - Flashing Symptom Codes .................................................. 4-48
4-11. Updating the TV’s Software ...................................................................................................4-49
4-11-1. By USB............................................................................................................................4-49
4-11-2. By Online.......................................................................................................................4-49
4-11-3. Stanby mode upgrade(O/On)..................................................................................4-49
5. Wiring Diagram................................................................................................................ 5-1
5-1. Wiring Diagram.............................................................................................................................5-1
5-2. Connector.....................................................................................................................................5-4
5-2-1. Main Board........................................................................................................................5-4
5-2-2. SMPS Board......................................................................................................................5-8

This Service Manual is a property of Samsung Electronics Co.,Ltd.
Any unauthorized use of Manual can be punished underapplicable
International and/or domestic law.
© 2018 Samsung Electronics Co.,Ltd.
All rights reserved.
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
WARNING
Forcontinued safety, do not attempt to modify the circuit board.
Disconnect the AC powerand DC power jack before servicing.
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 meteravailable at all times. Check the calibration of2.
this meter periodically.
1-1-3. Fire and Shock Hazard
Before returning the monitorto 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 the1.
chassis and other metal parts in the monitor.
Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and2.
compartment covers orshields, isolation resistorcapacitornetworks, mechanical insulators, etc.
Leakage Current Hot Check:3.
DEVICE
UNDER
TEST
(READING SHOULD)
NOT BE ABOVE 0.5mA LEAKAGE
CURRENT
TESTER
TEST ALL EXPOSED
METAL SURFACES
2-WIRE CORD
ALSO TESTWITH PLUG
REVERSED (USING AC
ADAPTER PLUG AS
REQUIRED)
EARTH
GROUND
WARNING
Do not use an isolation transformer during this test.
Use a leakage current testeror a metering system that complies with American National Standards
Institute (ANSI C101.1, Leakage Current forAppliances), and Underwriters Laboratories (UL
Publication UL1410, 59.7).
With the unit completely reassembled, plug the AC line cord directly into a120V AC outlet. With the unit’s AC switch4.
rst 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. Precautions

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.

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 conict 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 powersource and disconnect the DC PowerJack before attempting1.
to: (a) remove orreinstall 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 ortape is sometimes used.2.
The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such
elements to theiroriginal position.
Afterservicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that3.
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, input4.
terminals and earphone jacks).
Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect5.
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 greaterthan 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.
1-3
1. Precautions
1-2. Servicing 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-eect
transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
Immediately before handling any semiconductor components orassemblies, drain the electrostatic charge from your1.
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.
Afterremoving an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent2.
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 desolderESDs.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 ESDs6.
are packaged with leads that are electrically shorted togetherby conductive foam, aluminum foil orother conductive
materials.
Immediately before removing the protective material from the leads of a replacement ESD, touch the protective7.
material to the chassis orcircuit 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, or8.
lifting your foot from a carpeted oor can generate enough static electricity to damage an ESD.
1-4
1. Precautions
1-3. Static Electricity Precautions

Forsafety reasons, more than a people are required forcarrying 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 internal3.
temperature may cause re.
Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed4.
to moisture. Otherwise, it may cause a re or electric shock.
Make sure to turn the power o 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 forventilation purposes.7.
A rise in temperature within the product may cause re.
If an equipment is provided with a replaceable battery, and if replacement by an incorrect type could result in an8.
explosion (for example, with some lithium batteries), the following applies:
CAUTION
Risk of explosion if battery is replaced by an incorrect type dispose of used batteries according•
to the instructions.
Do not dispose of batteries in a re.•
Do not short circuit, disassemble or overheat the batteries.•
Danger of explosion if battery is incorrectly replaced. Replace onlywith the same or equivalent•
type.
Do not be exposed to excessive heat such as sunshine, re or the like.•
1-5
1. Precautions
1-4. Installation Precautions

2-1
2. Product specications
2. Product Specications
2-1. Product information
Model UE**NU7172U
Front View
W
* W : Width H : High D : Depth
H
D
Detail View
Color Front : CHARCOAL BLACK / Stand : SHADOW BLACK
Dimensions
(W x H x D)
49"
Body 1102.8 x 637.8 x 59.7 mm
With Stand 1102.8 x 716.4 x 261.3 mm
55"
Body 1238.6 x 714.2 x 59.2 mm
With Stand 1238.6 x 792.8 x 261.3 mm
58"
Body 1301.4 x 756.8 x 60.3 mm
With Stand 1301.4 x 835.2 x 261.3 m m
65"
Body 1457.5 x 837.3 x 59.7 mm
With Stand 1457.5 x 917.3 x 312.8 mm
75"
Body 1684.6 x 966.4 x 60.6 mm
With Stand 1684.6 x1056.5 x 356.1 mm

2-2
2. Product specications
Model UE**NU7172U
Weight
49"
Without Stand 13.2 kg
With Stand 13.5 kg
55"
Without Stand 17.3 kg
With Stand 17.7 kg
58"
Without Stand 20.2 kg
With Stand 20.5 kg
65"
Without Stand 25.0 kg
With Stand 25.5 kg
75"
Without Stand 37.0 kg
With Stand 37.5 kg

2-3
2. Product specications
2-2. Product specication
NOTE
Design and specications are subject to change without prior notice.
Item UE49NU7172UXXH
General Information Product LED
Cabinet Basic Code U49NY1
Series 7
Country HUNGARY
Platform(TV) SoC | Kant-M2e
Display Screen Size 49"
Resolution 3,840 x 2,160
Ultra Black N/A
Screen Curvature N/A
Billion Colors N/A
Video Picture Engine UHD Engine
PQI (Picture Quality Index) 1300
HDR (High Dynamic Range) HDR
HDR 10+ Yes
HLG (Hybrid Log Gamma) Yes
Contrast Mega Contrast
Color Pur Color
Viewing Angle N/A
Micro Dimming UHD Dimming
Auto Depth Enhancer N/A
Contrast Enhancer Yes
Auto Motion Plus Yes
Film Mode Yes
Natural Mode Support Yes
Audio Dolby Digital Plus Yes
DTS Codec N/A
Sound Output (RMS) 20W
Speaker Type 2CH
Woofer N/A
Multiroom Link Yes
Blutooth Audio N/A
Smart Service Voice Interaction N/A
Samsung SMART TV Smart

2-4
2. Product specications
Item UE49NU7172UXXH
Smart Service TV Plus Yes (GB,FR,DE,ES,IT)
Web Browser Yes
SmartThings App Support Yes
SmartThings N/A
Universal Guide YES (GB/FR/DE/IT/ES ONLY)
Convergence TV to Mobile - Mirroring N/A
Mobile to TV - Mirroring, DLNA Yes
360 Video Player Yes
360 Camera Support Yes
Bluetooth Low Energy N/A
WiFi Direct Yes
TV Sound to Mobile N/A
Sound Mirroring N/A
Tuner/Broadcasting Digital Broadcasting DVB-T2CS2
Analog Tuner Yes
2 Tuner N/A
CI (Common Interface) CI+(1.4)
Data Broadcasting
HbbTV 2.0.1(IT)/ HbbTV 1.5(CZ,S
K,DE,AT,FR,ES,FI,EE,GR)/ HbbTV
1.0(PL,HU,CH,BE,NL,LU,PT,DK)/ MHEG
5(GB,IE)
TV Key Yes
Connectivity HDMI 3
USB 2
Component In (Y/Pb/Pr) 1
Composite In (AV) 1 (Common Use for Component Y)
Ethernet (LAN) Yes
Audio Out (Mini Jack) N/A
Digital Audio Out (Optical) 1
RF In (Terrestrial / Cable input / Satellite input) 1/1(Common Use for Terrestrial)/1
Ex-Link ( RS-232C ) N/A
CI Slot 1
HDMI A / Return Ch. Support Yes
HDMI Quick Switch Yes
Wireless LAN Adapter Support N/A
Wireless LAN Built-in Yes
Anynet+ (HDMI-CEC) Yes
Design Design New Edge (Skinny Bezel)
Bezel Type VNB

2-5
2. Product specications
Item UE49NU7172UXXH
Design Slim Type Slim
Front Color Charcoal Black
Light Eect (Deco) N/A
Stand Type Simple Luminus
Swivel (Left/Right) N/A
Additional Feature Art Mode (The Frame) N/A
Motion Detection (The Frame) N/A
Ambient Mode N/A
Processor Quad-Core
Accessibility
Voice guide&Learn menu screen(UK
English, German, French, Spanish, Italian,
Dutch, Polish, Danish, Swedish, Finnish,
Norwegian, Portuguese, Russian(only
when connecting to Network in
EE,LV,LT))/ Enlarge/ High contrast/ Learn
TV Remote(UK English, German, French,
Spanish, Italian, Dutch, Polish, Danish,
Swedish, Finnish, Norwegian, Portuguese,
Russian(only when connecting to Network
in EE,LV,LT))/Negative colors/Grayscale/
SeeColors
Digital Clean View Yes
Auto Channel Search Yes
Auto Power O Yes
Caption (Subtitle) Yes
Connect Share™ (HDD) Yes
ConnectShare™ (USB 2.0) Yes
EPG Yes
Extended PVR N/A
Game Mode Yes (Basic)
OSD Language 27 European Languages + Russian(only
when connecting to Network in EE,LV,LT)
Picture-In-Picture N/A
BT HID Built-in N/A
USB HID Support Yes
Teletext (TTX) Yes
Time Shift N/A
IPv6 Support Yes
MBR Support N/A
Ultra Clean View N/A
Eco Feature Eco Sensor Yes
Energy Efciency Class A

2-6
2. Product specications
Item UE49NU7172UXXH
Power Power Supply AC220-240V 50/60Hz
Power Consumption (Max) 140 W

2-7
2. Product specications
Item UE55NU7172UXXH
General Information Product LED
Cabinet Basic Code U55NY1
Series 7
Country HUNGARY
Platform(TV) SoC | Kant-M2e
Display Screen Size 55"
Resolution 3,840 x 2,160
Ultra Black N/A
Screen Curvature N/A
Billion Colors N/A
Video Picture Engine UHD Engine
PQI (Picture Quality Index) 1300
HDR (High Dynamic Range) HDR
HDR 10+ Yes
HLG (Hybrid Log Gamma) Yes
Contrast Mega Contrast
Color Pur Color
Viewing Angle N/A
Micro Dimming UHD Dimming
Auto Depth Enhancer N/A
Contrast Enhancer Yes
Auto Motion Plus Yes
Film Mode Yes
Natural Mode Support Yes
Audio Dolby Digital Plus Yes
DTS Codec N/A
Sound Output (RMS) 20W
Speaker Type 2CH
Woofer N/A
Multiroom Link Yes
Blutooth Audio N/A
Smart Service Voice Interaction N/A
Samsung SMART TV Smart
TV Plus Yes (GB,FR,DE,ES,IT)
Web Browser Yes
SmartThings App Support Yes
SmartThings N/A
Universal Guide YES (GB/FR/DE/IT/ES ONLY)

2-8
2. Product specications
Item UE55NU7172UXXH
Convergence TV to Mobile - Mirroring N/A
Mobile to TV - Mirroring, DLNA Yes
360 Video Player Yes
360 Camera Support Yes
Bluetooth Low Energy N/A
WiFi Direct Yes
TV Sound to Mobile N/A
Sound Mirroring N/A
Tuner/Broadcasting Digital Broadcasting DVB-T2CS2
Analog Tuner Yes
2 Tuner N/A
CI (Common Interface) CI+(1.4)
Data Broadcasting
HbbTV 2.0.1(IT)/ HbbTV 1.5(CZ,S
K,DE,AT,FR,ES,FI,EE,GR)/ HbbTV
1.0(PL,HU,CH,BE,NL,LU,PT,DK)/ MHEG
5(GB,IE)
TV Key Yes
Connectivity HDMI 3
USB 2
Component In (Y/Pb/Pr) 1
Composite In (AV) 1 (Common Use for Component Y)
Ethernet (LAN) Yes
Audio Out (Mini Jack) N/A
Digital Audio Out (Optical) 1
RF In (Terrestrial / Cable input / Satellite input) 1/1(Common Use for Terrestrial)/1
Ex-Link ( RS-232C ) N/A
CI Slot 1
HDMI A / Return Ch. Support Yes
HDMI Quick Switch Yes
Wireless LAN Adapter Support N/A
Wireless LAN Built-in Yes
Anynet+ (HDMI-CEC) Yes
Design Design New Edge (Skinny Bezel)
Bezel Type VNB
Slim Type Slim
Front Color Charcoal Black
Light Eect (Deco) N/A
Stand Type Simple Luminus
Swivel (Left/Right) N/A

2-9
2. Product specications
Item UE55NU7172UXXH
Additional Feature Art Mode (The Frame) N/A
Motion Detection (The Frame) N/A
Ambient Mode N/A
Processor Quad-Core
Accessibility
Voice guide&Learn menu screen(UK
English, German, French, Spanish, Italian,
Dutch, Polish, Danish, Swedish, Finnish,
Norwegian, Portuguese, Russian(only
when connecting to Network in
EE,LV,LT))/ Enlarge/ High contrast/ Learn
TV Remote(UK English, German, French,
Spanish, Italian, Dutch, Polish, Danish,
Swedish, Finnish, Norwegian, Portuguese,
Russian(only when connecting to Network
in EE,LV,LT))/Negative colors/Grayscale/
SeeColors
Digital Clean View Yes
Auto Channel Search Yes
Auto Power O Yes
Caption (Subtitle) Yes
Connect Share™ (HDD) Yes
ConnectShare™ (USB 2.0) Yes
EPG Yes
Extended PVR N/A
Game Mode Yes (Basic)
OSD Language 27 European Languages + Russian(only
when connecting to Network in EE,LV,LT)
Picture-In-Picture N/A
BT HID Built-in N/A
USB HID Support Yes
Teletext (TTX) Yes
Time Shift N/A
IPv6 Support Yes
MBR Support N/A
Ultra Clean View N/A
Eco Feature Eco Sensor Yes
Energy Efciency Class A
Power Power Supply AC220-240V 50/60Hz
Power Consumption (Max) 150 W

2-10
2. Product specications
Item UE58NU7179UXZG
General Information Product LED
Cabinet Basic Code U58NY1
Series 7
Country HUNGARY
Platform(TV) SoC | Kant-M2e
Display Screen Size 58"
Resolution 3,840 x 2,160
Ultra Black N/A
Screen Curvature N/A
Billion Colors N/A
Video Picture Engine UHD Engine
PQI (Picture Quality Index) 1300
HDR (High Dynamic Range) HDR
HDR 10+ Yes
HLG (Hybrid Log Gamma) Yes
Contrast Mega Contrast
Color Pur Color
Viewing Angle N/A
Micro Dimming UHD Dimming
Auto Depth Enhancer N/A
Contrast Enhancer Yes
Auto Motion Plus Yes
Film Mode Yes
Natural Mode Support Yes
Audio Dolby Digital Plus Yes
DTS Codec N/A
Sound Output (RMS) 20W
Speaker Type 2CH
Woofer N/A
Multiroom Link Yes
Blutooth Audio N/A
Smart Service Voice Interaction N/A
Samsung SMART TV Smart
TV Plus Yes (GB,FR,DE,ES,IT)
Web Browser Yes
SmartThings App Support Yes
SmartThings N/A
Universal Guide YES (GB/FR/DE/IT/ES ONLY)

2-11
2. Product specications
Item UE58NU7179UXZG
Convergence TV to Mobile - Mirroring N/A
Mobile to TV - Mirroring, DLNA Yes
360 Video Player Yes
360 Camera Support Yes
Bluetooth Low Energy N/A
WiFi Direct Yes
TV Sound to Mobile N/A
Sound Mirroring N/A
Tuner/Broadcasting Digital Broadcasting DVB-T2CS2
Analog Tuner Yes
2 Tuner N/A
CI (Common Interface) CI+(1.4)
Data Broadcasting
HbbTV 2.0.1(IT)/ HbbTV 1.5(CZ,S
K,DE,AT,FR,ES,FI,EE,GR)/ HbbTV
1.0(PL,HU,CH,BE,NL,LU,PT,DK)/ MHEG
5(GB,IE)
TV Key Yes
Connectivity HDMI 3
USB 2
Component In (Y/Pb/Pr) 1
Composite In (AV) 1 (Common Use for Component Y)
Ethernet (LAN) Yes
Audio Out (Mini Jack) N/A
Digital Audio Out (Optical) 1
RF In (Terrestrial / Cable input / Satellite input) 1/1(Common Use for Terrestrial)/1
Ex-Link ( RS-232C ) N/A
CI Slot 1
HDMI A / Return Ch. Support Yes
HDMI Quick Switch Yes
Wireless LAN Adapter Support N/A
Wireless LAN Built-in Yes
Anynet+ (HDMI-CEC) Yes
Design Design New Edge (Skinny Bezel)
Bezel Type VNB
Slim Type Slim
Front Color Charcoal Black
Light Eect (Deco) N/A
Stand Type Simple Luminus
Swivel (Left/Right) N/A