Samsung QN82Q8FNBF User manual

QLED TV
SERVICEManual
QLED TV Contents
1. Precautions
2. Product specications
3. Disassembly and Reassembly
4. Troubleshooting
5. Wiring Diagram
QN82Q8FNBF
Project : QNQ8FR
Chassis : QWY80
Model : QN82Q8FNBF

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.................................................................................................................. 2-2
2-3. Accessories.................................................................................................................................. 2-5
2-4. Viewing the Functions................................................................................................................2-6
2-4-1. 2018' Concept........................................................................................................2-6
2-4-2. Quick Guides....................................................................................................................2-9
2-4-3. The Samsung Smart Remote ...................................................................................... 2-13
3. Disassembly and Reassemble........................................................................................ 3-1
3-1. Disassembly ................................................................................................................................. 3-1
4. Troubleshooting .............................................................................................................. 4-1
4-1. Function ........................................................................................................................................ 4-1
4-1. Function Control Test.......................................................................................................... 4-1
4-2. Power............................................................................................................................................4-2
4-2-1. TV POWER STANDBY.......................................................................................................4-2
4-2-2. TV POWER ON SEQUENCE.............................................................................................4-4
4-2-3. SMPS / PANEL BACKLIGHT............................................................................................4-6
4-3. Video .............................................................................................................................................4-8
4-3-1. Customer Picture Test.....................................................................................................4-8
4-3-2. Check Test Patterns........................................................................................................4-9
4-3-3. MAIN/T-CON BOARD....................................................................................................4-10
4-4. Audio........................................................................................................................................... 4-13
4-5. Network...................................................................................................................................... 4-14
4-6. Smart Hub.................................................................................................................................. 4-15
4-7. Bluetooth / WiFi Module........................................................................................................... 4-17
4-8. Factory Mode............................................................................................................................. 4-19
4-9. Factory Mode Adjustments .....................................................................................................4-25
4-9-1. Entering Factory Mode .................................................................................................4-25
4-9-2. Detail Factory Option ...................................................................................................4-26
4-9-3. Factory Data...................................................................................................................4-27

4-10. AV Control Tabe ...................................................................................................................... 4-40
4-11. Updating the TV’s Software ...................................................................................................4-47
4-11-1. Updating the TV’s software to the latest version....................................................4-47
4-11-2. Updating the TV automatically..................................................................................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......................................................................................................................5-8
5-2-3. LD Board ...........................................................................................................................5-9

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

3-1
3. Disassembly and Reassemble
3. Disassembly and Reassemble
This section of the service manual describes the disassembly and reassembly procedures for the LED TV.
CAUTION
Disconnect the LED TV from the powersource before disassembly.1.
Follow these directions carefully.2.
Use the Samsung Open Jig and Cushion to remove the Rear Cover.-
Open Jig Tool, Protection Cushion (curved models Only)•
Recommended Torque forCabinet/Stand screws : 10 ~ 12kgf-
A strength of Torque can be changed depending on the situation.•
3-1. Disassembly
Description & Screws Picture Description
1
Carefully position the TV so that the screen is
facing downwards.
Make sure to place the TV upon a soft•
cushion or any material that will prevent
damage to the screen.
2
Remove the ASSY STAND P-BRACKET BOTTOM
(R/L) with pulling it down.

3-2
3. Disassembly and Reassemble
Description & Screws Picture Description
3
Use Open Jig to release tape in corners and
all clips as indicated in red on sides and top &
bottom.
Gently lift up the Rear Cover starting at the
top being careful of function assembly at the
bottom.
When the 4 points (• )Hook is broken.
Although the hook is broken, the appearance
of the Rear cover is no problem and Gap
problem is not appeard after re-assembly.
To prevent the Inner Hook's broken.•
1. Catch the upper section of the rearcover.
2. Open the rear coverfrom top to bottom.
If the wire is bent, need to change the wire.•
Open Jigs
BN81-14946A
Jig Direction
Jig Direction
Jig Direction
Locking tabs locations
82"•
Bottom : 8 point Locking
Top :16 point Locking
L: 9 point Locking
R: 9 point Locking
Main part : 1 Point Locking
SMPS part : 1 Point Locking
4
Gently lift up the Rear Cover from the bottom
chassis.

3-3
3. Disassembly and Reassemble
Description & Screws Picture Description
5
Remove the ASSY SPEAKER P-FRONT.
• ASSY SPEAKER P-FRONT Cable
• : Assy SPK to Panel Hole 2 Points
ASSY SPEAKER P-FRONT Cable
ASSY SPEAKER P-FRONT
<Hole 2 Points>
6
Remove the NETWORK-WLAN CLIENT.
• LEAD CONNECTOR-SUB ASSY
LEAD CONNECTOR-SUB ASSY
<Disassemble WiFI>
NETWORK-WLAN CLIENT
7
Remove the 2 screw and remove the ASSY
BOARD P-FUNCTION TACT.
• ASSY BOARD P-FUNCTION TACT Cable
ASSY BOARD P-FUNCTION TACT
ASSY BOARD P-FUNCTION TACT Cable
<Disassemble Function/IR>

3-4
3. Disassembly and Reassemble
Description & Screws Picture Description
8
Remove the Cables.
• LEAD CONNECTOR-POWER
(LD - SMPS)
• LEAD CONNECTOR-POWER
(MAIN - SMPS)
• LEAD CONNECTOR-DIMMING
(LD - MAIN)
• FFC CABLE
(MAIN - T-CON)
• LEAD CONNECTOR-POWER
(T-CON - SMPS)
9
Remove the ASSY PCB MAIN BOARD.
Gently lift up (Top Right corner) to release•
the lock.
Use both hands to hold the board and slide•
to the left to release the board.
NOTE
When installing the ASSY PCB MAIN BOARD,
verify the board is properly positioned in all 4
mounting slots.
Locking Fixing Hole
Locking
Slide to the left to release the board
Bottom chassis Guide Fixing Hole

3-5
3. Disassembly and Reassemble
Description & Screws Picture Description
10
Remove the DC VSS-PD BOARD. (Decomposition
order : 1- 2- 3)
3
• Gently lift up (Top Left corner) to release
the lock and Slide Board to the Right.
Locking Fixing Hole
NOTE
1Before Removing SMPS Board
You have to discharge the SMPS by using•
service JIG.
If LED ON9: LED OFF, discharge is
completed.
Measurement point
•
<Before discharging> <After discharging>
LED ON LED OFF
A/S-DISCHARGE-JIG
BN81-12884A
Measurement point
Locking
Slide to the right to release the board
Bottom chassis Guide Fixing Hole
1
3
3
Insert the open Jig. Push SMPS-PANEL
connector for unlock and
lift up open JIG for SMPS
unlock.
2
11
Remove the Cables.
• LEAD CONNECTOR

3-6
3. Disassembly and Reassemble
Description & Screws Picture Description
12
Remove the DC VSS-DRIVER BOARD.
Gently lift up (Top Left corner) to release the•
lock.
Use both hands to hold the board and slide•
to the left to release the board.
NOTE
When installing the DC VSS-DRIVER BOARD,
verify the board is properly positioned in all 4
mounting slots.
Locking Fixing Hole
Locking
Slide to the left to release the board
Bottom chassis Guide Fixing Hole
13
Completed the disassembly.
NOTE
Reassembly procedures are in the reverse orderof disassembly procedures.

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 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 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 poor ventilation such as a bookshelf orcloset. 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 QN82Q8FNBF
Front View
W
* W : Width H : High D : Depth
H
D
Detail View
Color Front : CARBON SILVER / Stand : CARBON SILVER
Dimensions
(W x H x D) 82"
Body 72.1 x 41.4 x 2.5 inches (1831.2 x 1052.2 x 62.7 mm)
With Stand 72.1 x 44.9 inches (1831.2 x 1141.1 mm)
Weight 82"
Without Stand 104.3 lbs (47.3 kg)
With Stand 106.9 lbs (48.5 kg)

2-2
2. Product specications
2-2. Product specication
NOTE
Design and specications are subject to change without prior notice.
Last Update Date : 2018.10.15
Item QN82Q8FNBFXZA
General Information Product QLED
Series Q
Country UNITED STATES
Display Screen Size 82"
Resolution 3,840 x 2,160
Ultra Black Ultra Black Elite
Screen Curvature N/A
10 bit Support Yes
Video Picture Engine Q Engine
Motion Rate 240
HDR (High Dynamic Range) Q HDR Elite
HDR 10+ Yes
Contrast Q Constrast Elite
HLG (Hybrid Log Gamma) Yes
Color Q Color
Viewing Angle Ultra Wide Viewing
Micro Dimming Supreme UHD Dimming
Local Dimming Direct Full Array
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) 40W
Speaker Type 4.1CH
Woofer Yes
Multiroom Link Yes
Blutooth Audio Yes
Smart Service Samsung SMART TV Smart
Bixby US English
Voice Interaction Spanish, French

2-3
2. Product specications
Item QN82Q8FNBFXZA
Smart Service TV Plus Yes (US Only)
Web Browser Yes
SmartThings App Support Yes
SmartThings Yes
Universal Guide Yes (US Only)
Convergence TV to Mobile - Mirroring Yes
Mobile to TV - Mirroring, DLNA Yes
360 Video Player Yes
360 Camera Support Yes
Easy Setup 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) 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)/0
Ex-Link ( RS-232C ) 1
CI Slot N/A
HDMI A / Return Ch. Support Yes
HDMI Quick Switch Yes
Wireless LAN Built-in Yes
Anynet+ (HDMI-CEC) Yes
Design Design Q Style - Solid
Bezel Type 3 Bezel-less
Front Color Carbon Silver
Light Eect (Deco) N/A
Stand Type Simple
Swivel (Left/Right) N/A
Additional Feature Art Mode (The Frame) N/A
Motion Detection (The Frame) N/A

2-4
2. Product specications
Item QN82Q8FNBFXZA
Additional Feature Ambient Mode Yes
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 O Yes
Caption (Subtitle) Yes
Connect Share™ (HDD) Yes
ConnectShare™ (USB 2.0) Yes
EPG Yes
Game Mode Yes (Auto Game mode, Game Motion Plus,
Freesync)
OSD Language English, Spanish, French
BT HID Built-in Yes
USB HID Support Yes
Teletext (TTX) N/A
V-Chip Yes
IPv6 Support Yes
MBR Support Yes
Ultra Clean View N/A
Eco Feature Eco Sensor Yes
Energy Star N/A
Power Power Supply AC110-120V 50/60Hz
Power Consumption (Max) 360 W
Power Consumption (Stand-by) 0.50 W
Power Consumption (Typical) 160 W

2-5
2. Product specications
2-3. Accessories
NOTE
The items’ colors and shapes may vary depending on the model.•
Cables not included in the package contents can be purchased separately.•
The part code for some accessories may dier depending on your region.•
The provided accessories may vary depending on the model.•
Power Cable Samsung Smart Remote /
Batteries (AA x 2)
User Manual /
Regulatory Guide
L R
ForWall Mount
Wall Mount Adapter
x 4
1
4
6
5
32
Product Code. No Product Code. No
Power Cable• 3903-001132 Samsung Smart Remote• BN59-01298H
Batteries (AA x 2)• 4301-000101 User Manual• BN68-08958C
Regulatory Guide• BN68-08114Q
ForWall Mount
Product Code. No
Wall Mount Adapter (4 EA)• BN61-14912A