Samsung QN55LS01RAF User manual

QLED TV
SERVICEManual
QLED TV Contents
1. Precautions
2. Product specications
3. Disassembly and Reassembly
4. Troubleshooting
5. Wiring Diagram
QN55LS01RAF
Project : QRLS01U
Chassis : QWD91
Model : QN55LS01RAF

Contents
1. Precautions....................................................................................................................... 1-1
1-1. Safety Precautions .......................................................................................................................1-1
1-1-1. Warnings.............................................................................................................................1-1
1-1-2. Servicing the Frame 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...................................................................................................................................2-6
2-4. Connect.........................................................................................................................................2-8
2-5. Viewing the Functions................................................................................................................2-9
2-5-1. The Serif, brand new TV for 2019 ...................................................................................2-9
2-5-2. Quick Guides .................................................................................................................. 2-15
2-5-3. NFC on TV function .......................................................................................................2-24
2-5-4. The Remote....................................................................................................................2-25
2-5-5. Using the TV Controller................................................................................................ 2-27
2-6. Supported subtitles ..................................................................................................................2-28
3. Disassembly and Reassemble........................................................................................ 3-1
3-1. TV Disassembly............................................................................................................................ 3-1
4. Troubleshooting .............................................................................................................. 4-1
4-1. Function Control Operation ....................................................................................................... 4-1
4-2. Power............................................................................................................................................4-2
4-2-1. TV POWER STANDBY.......................................................................................................4-2
4-2-2. TV POWER ON SEQUENCE ............................................................................................4-3
4-2-3. BACKLIGHT.......................................................................................................................4-4
4-3. Video .............................................................................................................................................4-6
4-3-1. Customer Picture.............................................................................................................4-6
4-3-2. Check Test Patterns........................................................................................................ 4-7
4-3-3. MAIN/T-CON BOARD......................................................................................................4-8
4-4. Audio............................................................................................................................................4-11
4-5. Network...................................................................................................................................... 4-12
4-6. Smart Hub..................................................................................................................................4-13
4-7. BlueTooth / WiFi Module .......................................................................................................... 4-15
4-8. Replacing Main Board..............................................................................................................4-16
4-9. Factory Mode ............................................................................................................................ 4-20

4-10. Factory Mode Adjustments ...................................................................................................4-25
4-10-1. Entering Factory Mode ...............................................................................................4-25
4-10-2. Detail Factory Option .................................................................................................4-26
4-10-3. Factory Data.................................................................................................................4-27
4-11. AV Control Tabe....................................................................................................................... 4-40
4-12. Updating the TV’s Software...................................................................................................4-47
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......................................................................................................................5-9

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.
© 2019 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 power and DC power jack before servicing.
1-1-2. Servicing the Frame TV
Forcontinued safety, do not attempt to modify the circuit board.1.
It is essential that service technicians have an accurate voltage meteravailable at all times.2.
Check the calibration of this meterperiodically.
1-1-3. Fire and Shock Hazard
Before returning the Frame TV 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 the1.
chassis and other metal parts in the Frame TV.
Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and2.
compartment covers orshields, isolation resistorcapacitor networks, 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 a120VAC 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 power source and disconnect the DC Power Jack before attempting1.
to: (a) remove orreinstall any component or assembly, (b) disconnect PCB plugs orconnectors, (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, weara 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 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 ESDs6.
are packaged with leads that are electrically shorted togetherby conductive foam, aluminum foil or other 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 poorventilation 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 only with 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 QN55LS01RAF
Front View
W
* W : Width H : High D : Depth
H
D
W
* W : Width H : High D : Depth
H
D
Detail View
Color Front : WHITE / Stand : BLACK

2-2
2. Product specications
Model QN55LS01RAF
Dimensions
(W x H x D) 55" Body 49.4 x 29.5 x 8.7 inches (1254.9 x 748.3 x 221.0 mm)
With Stand 49.4 x 48.7 x19.0 inches (1254.9 x 1237.4 x 482.8 mm)
Weight 55" Without Stand 57.5 lbs (26.1 kg)
With Stand 60.0 lbs (27.2 kg)
OtherInformation
Model QN55LS01RF
Display Resolution 3840 x 2160
Screen Size
Diagonal
Measured Diagonally
55" Class
54.6 inches
Sound (Output) 40 W
Environmental Considerations
Operating Temperature
Operating Humidity
Storage Temperature
Storage Humidity
50°F to 104°F (10°C to 40°C)
10% to 80%, non-condensing
-4°F to 113°F (-20°C to 45°C)
5% to 95%, non-condensing
• Because of the appearance design of the TV, part of the screen may be hidden by the frame.
• The design and specications are subject to change without prior notice.
• For information about the power supply, and more information about power consumption, refer to the label-rating
attached to the product.
• You can see the label-rating attached to the back of the TV. (Forsome models, you can see the label-rating inside the
cover terminal.)

2-3
2. Product specications
2-2. Product specication
NOTE
Design and specications are subject to change without prior notice.
Last Update Date : 2019.05.03
Item QN55LS01RAFXZA
General Information Product QLED
Series LS
Country UNITED STATES
Platform(TV) SoC | Muse-M
Display Screen Size 55"
Resolution 3,840 x 2,160
Video Picture Engine Quantum Processor 4K
Motion Rate 240
HDR (High Dynamic Range) Quantum HDR 4x
HDR 10+ Yes
HLG (Hybrid Log Gamma) Yes
Contrast Mega Contrast
Color ColorVolume100% by Quantum Dot
Micro Dimming Supreme UHD Dimming
Contrast Enhancer Yes
Auto Motion Plus Yes
Film Mode Yes
Audio Dolby Digital Plus Yes
Dialog Enhancement Yes
Sound Output (RMS) 40W
Speaker Type 4CH
Woofer N/A
Multiroom Link Yes
Blutooth Audio Yes
Smart Service Samsung SMART TV Smart
Bixby
US English, Korean, UK English, French,
German, Italian, Spanish (features vary by
language)
Far-Field Voice Interaction Yes
Works with Google Assistant Yes
Works With Alexa Yes
TV Plus Yes
Web Browser Yes
SmartThings App Support Yes

2-4
2. Product specications
Item QN55LS01RAFXZA
SmartThings Yes
Universal Guide Yes
Gallery Yes
Convergence TV to Mobile - Mirroring Yes
Mobile to TV - Mirroring, DLNA Yes
NFC on TV Yes (Sound Mirroring)
360 Video Player Yes
Seamless Setup Yes
App Casting Yes
Bluetooth Low Energy Yes
WiFi Direct Yes
TV Sound to Mobile Yes
Sound Mirroring Yes
Tuner/Broadcasting Digital Broadcasting ATSC/ClearQAM
Analog Tuner Yes
Connectivity HDMI 4
USB 2
Component In (Y/Pb/Pr) N/A
Composite In (AV) N/A
Ethernet (LAN) N/A
Digital Audio Out (Optical) 1
RF In (Terrestrial / Cable input / Satellite input) 1/1(Common Use for Terrestrial)/0
Ex-Link ( RS-232C ) 1
HDMI A / Return Ch. Support Yes
HDMI Quick Switch Yes
WiFi Yes
Anynet+ (HDMI-CEC) Yes
Design Design Serif Design
Bezel Type VNB
Slim Type Normal
Front Color WHITE
Stand Type METAL FLOOR STAND
Stand Color BLACK
Speaker Jersey Color N/A
Additional Feature Intelligent Mode Yes
AI Upscale Yes
Auto Rotation N/A
Art Mode (The Frame) N/A

2-5
2. Product specications
Item QN55LS01RAFXZA
Motion Detection (The Frame) N/A
Ambient Mode Yes
Ambient Mode Brightness/Color Sensor Brightness Sensor
Portrait Mode N/A
Instant On Yes
Processor Quad-Core
Accessibility
Learn menu screen(US English)/
SeeColors/ Negative colors/ Grayscale/
Caption moving/ Voice Guide(US
English)/ Enlarge/ High Contrast/ Learn
TV Remote(US English)/ Multi-output
Audio
Digital Clean View Yes
Auto Channel Search Yes
Auto Power Off Yes
Caption (Subtitle) Yes
Connect Share™ (HDD) Yes
ConnectShare™ (USB 2.0) Yes
EPG Yes
Extended PVR N/A
Game Mode Yes (Auto Game Mode, Game Motion Plus,
Dynamic Black EQ, Game Enhancer)
Freesync FreeSync
IP Control Yes
OSD Language English, Spanish, French
BT HID Built-in Yes
USB HID Support Yes
V-Chip Yes
IPv6 Support Yes
Eco Feature Eco Sensor Yes
Power Power Supply AC110-120V 50/60Hz
Power Consumption (Max) 150 W
Power Consumption (Stand-by) 0.5 W
Power Consumption (Typical) 65 W

2-6
2. Product specications
2-3. Accessories
NOTE
• The items’ colors and shapes mayvary depending on the model.
• Cables not included in the package contents can be purchased separately.
• The part code forsome accessories may differdepending on your region.
• The provided accessories mayvary depending on the model.
• The code number can be changed, see "Exploded Views" provided on the site.
User Manual TV Power Cable Cable GuideSamsung Smart Remote Batteries (AA x 2)
Product Code. No Product Code. No
• Samsung Smart Remote BN59-01312U • Batteries (AA x 2) 4301-000101
• User Manual BN68-09620A • TV Power Cable 3903-001132
• Cable Guide BN61-05373A
• Warranty Card / Regulatory Guide (Not available in some locations)

2-7
2. Product specications
Arranging the cables with the cable guide
When you install your TV without a stand, arrange the cables with the cable guide as shown in the gure below:
02 TV Installation
Providing properventilation foryour TV
When you install your TV, maintain a distance of at least 10 cm between the TV with other objects (walls,
cabinet sides, etc.) to ensure proper ventilation. Failing to maintain properventilation may result in a fire or a
problem with the product caused by an increase in its internal temperature.
•When you install your TV with a stand or without a stand, we strongly recommend you use parts provided
by Samsung Electronics only. Using parts provided by another manufacturer may cause difficulties with the
product or result in injury caused by the product falling.
Installation with a stand Installation without a stand
10 cm10 cm
10 cm 10 cm
10 cm10 cm
Arranging the cables with the cable guide
When you install your TV without a stand, arrange the cables with the cable guide as shown in the figure below:
English - 7

2-8
2. Product specications
2-4. Connect
BACK OF TELEVISION
ARRIÈRE DU TÉLÉVISEUR
PARTE TRASERA DEL TELEVISOR
HDD
OPTICAL
ANT IN
USB
ARC

2-9
2. Product specications
2-5. Viewing the Functions
2-5-1. The Serif, brand new TV for2019
Top 4 Features
Iconic Design
The Serif’s iconic I-shaped prole is sharper and more
sophisticated than ever. It’s the essence of emotional
design that blends into any space.
ColorVolume100%
Samsung’s Quantum Dot technology uses nano-sized
quantum dots to produce 100% colorvolume, giving you
great details even in bright or dark scenes.
NFC on TV
Place your mobile device on The Serif to connect and
enjoy your mobile contents on TV.
Bouroullec Design
The Serif is a collaboration between Samsung and
Ronan & Erwan Bouroullec both the exterio design, as
well as the contents and overall experience.

2-10
2. Product specications
Ambient Mode
Your screen doesn’t have to be black when it’s turned off. Ambient Mode serves up beautiful images and useful
information you want to see, with a range of choices and settings that make it simple to transform your TV screen and
use it in new ways.
Background feature accuracy may vary based on TV location, dependent on wall designs, patterns, and/or colours.
All round Design
No matter where you put it, The Serif sits in harmony with your space, looking soft and inviting TV’s combinations bring
positive value by making people feel positive. The special nish is both stylish and durable and it has the unique effect
of melting into your space like decorative objet.

2-11
2. Product specications
Metal FloorStand
A new black metal oor stand of The Serif adds another level of sophistication to The Serif’s iconic design TV. The stand
blends naturally with the room environment and lets you easily position The Serif anywhere in your space.
The Serif exclusive patterns
Specially created for The Serif by Ronan & Erwan Bouroullec, the new Ambient Mode features two patterns inspired by
the beauty of the natural world around us—a beautiful leaf and a textured fabric.
Hide the powerwire neatly in the stand
The Serif doens't just look great. It makes your whole room look neater. All you have to do is hide the power cable into
the line on the side of the Serif. You'll love this extra touch of elegance.