Samsung QN65Q9FNAF User manual

QLED TV
SERVICEManual
QLED TV Contents
1. Precautions
2. Product specications
3. Disassembly and Reassembly
4. Troubleshooting
5. Wiring Diagram
QN65Q9FNAF
Project : QNQ9FA
Chassis : QWA80
Model : QN65Q9FNAF
QN75Q9FNAF

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. Other specication......................................................................................................................2-8
2-4. Accessories..................................................................................................................................2-9
2-5. Viewing the Functions.............................................................................................................. 2-10
2-5-1. 2018' Concept......................................................................................................2-10
2-5-2. Quick Guides ...................................................................................................................2-12
2-5-3. The Samsung Smart Remote ...................................................................................... 2-16
2-5-4. Using the TV Controller................................................................................................ 2-18
2-5-5. RearView & One Connect............................................................................................. 2-19
2-6. HDMI UHD Color........................................................................................................................2-20
2-7. Supported Formats.................................................................................................................... 2-21
3. Disassembly and Reassemble........................................................................................ 3-1
3-1. TV Disassembly............................................................................................................................ 3-1
3-2. One Connect Disassembly......................................................................................................... 3-7
4. Troubleshooting .............................................................................................................. 4-1
4-1. Diagnostic Methods (Flashing Symptom Codes) ................................................................... 4-1
4-2. Function Control Operation Test ..............................................................................................4-3
4-3. Power ............................................................................................................................................4-4
4-3-1. TV POWER STANDBY.......................................................................................................4-4
4-3-2. TV POWER ON SEQUENCE.............................................................................................4-6
4-3-3. One Connect POWER ON SEQUENCE ..........................................................................4-8
4-3-4. OCB Self Power Supply ..................................................................................................4-9
4-3-5. BACKLIGHT Dimming Control & BL Supply Path.......................................................4-11
4-3-6. BACKLIGHT..................................................................................................................... 4-12
4-3-7. Backlight Quick Test......................................................................................................4-14
4-4. Video ........................................................................................................................................... 4-16
4-4-1. ONE CONNECT............................................................................................................... 4-16
4-4-2. MAIN/T-CON BOARD ................................................................................................... 4-17
4-4-3. PANEL............................................................................................................................. 4-19
4-4-4. Check Test Patterns..................................................................................................... 4-20

4-5. Audio........................................................................................................................................... 4-21
4-6. Network......................................................................................................................................4-22
4-7. Smart Hub...................................................................................................................................4-23
4-8. Bluetooth / WiFi Module..........................................................................................................4-25
4-9. Replacing Main Board ..............................................................................................................4-27
4-10. Factory Mode ...........................................................................................................................4-29
4-11. Factory Mode Adjustments....................................................................................................4-35
4-11-1. Entering Factory Mode................................................................................................4-35
4-11-2. Detail Factory Option..................................................................................................4-36
4-11-3. Factory Data .................................................................................................................4-38
4-12. RS-232C ................................................................................................................................... 4-48
4-13. AV Control Tabe .......................................................................................................................4-49
4-14. Updating the TV’s Software...................................................................................................4-56
4-14-1. Updating the TV’s software to the latest version...................................................4-56
4-14-2. Updating the TV automatically.................................................................................4-56
5. Wiring Diagram................................................................................................................ 5-1
5-1. Wiring Diagram.............................................................................................................................5-1
5-2. Connector.....................................................................................................................................5-5
5-2-1. Main Board........................................................................................................................5-5
5-2-2. LD/SMPS Board...............................................................................................................5-9
5-2-3. One Connect Board....................................................................................................... 5-12
5-2-4. One Connect Power Supply Board.............................................................................. 5-14
ANNEX. Exploded View & Part List [QN65Q9FNAFXZA FA02]...............................ANNEX-1
1-1. Exploded View....................................................................................................................ANNEX-1
1-1-1. Parts List ..................................................................................................................ANNEX-1
1-2. ONE CONNECT Exploded View.......................................................................................ANNEX-2
1-2-1. Parts List.................................................................................................................ANNEX-2
2-1. Electrical Parts List...........................................................................................................ANNEX-3
ANNEX. Exploded View & Part List [QN75Q9FNAFXZA AA01]...............................ANNEX-1
1-1. Exploded View....................................................................................................................ANNEX-1
1-1-1. Parts List ..................................................................................................................ANNEX-1
1-2. ONE CONNECT Exploded View.......................................................................................ANNEX-2
1-2-1. Parts List.................................................................................................................ANNEX-2
2-1. Electrical Parts List...........................................................................................................ANNEX-3

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 for Cabinet/Stand screws : 10 ~ 12kgf-
A strength of Torque can be changed depending on the situation.•
3-1. TV 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 stand decoration(Cover) and the
screws on TV stand guide. and then remove
Stand(ASSY COVER P-STAND TOP).
65 inches : 4 EA•
75 inches : 4 EA•
Screws
6003-001334
SCREW-TAPTYPE : M4 x L14, ZPC(BLK)
SET + STAND
•

3-2
3. Disassembly and Reassemble
Description & Screws Picture Description
3
Insert the Open Jig tool completely into bottom
left corner Tab of the rear cover and following
directions 1→2→3
Open Jigs
BN81-14946B
Jig Direction 2
Jig Direction 1
Jig Direction 3
<Bottom Conner>
4
Gently lift up the Rear Coverbeginning at the
top to release all mounting clips as indicated by
Red Rectangles.
NOTE
Some tabs may break. OK to continue to•
use cover.
Locking tabs locations
65 inches•
L: 7 point Locking
R: 7 point Locking
Top :12 point Locking
Bottom : 8 point Locking
75 inches•
L: 8 point Locking
R: 8 point Locking
Top : 14 point Locking
Bottom : 8 point Locking
11
2
2

3-3
3. Disassembly and Reassemble
Description & Screws Picture Description
5
Remove the NETWORK-WLAN CLIENT.
• LEAD CONNECTOR-SUB ASSY
<Disassemble WiFI>
LEAD CONNECTOR-SUB ASSY
NETWORK-WLAN CLIENT
6
Remove the ASSY BOARD P-FUNCTION TACT.
• ASSY BOARD P-FUNCTION TACT Cable
Screws
6001-003042
SCREW-MACHINE : M3 x L10, ZPC(BLK)
DECO+C/H FRONT
•
ASSY BOARD P-FUNCTION TACT Cable
ASSY BOARD P-FUNCTION TACT
<Disassemble Function/IR>

3-4
3. Disassembly and Reassemble
Description & Screws Picture Description
7
Remove the ASSY SPEAKER P-FRONT.
• ASSY SPEAKER P-FRONT Cable
• : Assy SPK to Panel Hole 4 Points
ASSY SPEAKER P-FRONT Cable
ASSY SPEAKER P-FRONT
8
Remove the Cables.
• LEAD CONNECTOR-DIMMING
(Main - LD/SMPS B)
• LEAD CONNECTOR-POWER
(Main - LD/SMPS A)
• FFC Cables
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
Slide to the left to release the board
Fixing Hole
Locking

3-5
3. Disassembly and Reassemble
Description & Screws Picture Description
10
Remove the Cables.
• LEAD CONNECTOR-POWER
(LD/SMPS A - LD/SMPS B)
• LEAD CONNECTOR-DIMMING
(LD/SMPS A - LD/SMPS B)
• FFC Cables
LD/SMPS B
LD/SMPS A
11
Remove the LD/SMPS B/A(DC VSS-DRIVER
BOARD). (Decomposition order : 1- 2)
65 / 75 inches•
LD/SMPS B• : 2Gently lift up to release the
lock and Slide Board to the left.
LD/SMPS A• : 2Gently lift up to release the
lock and Slide Board to the right.
Locking Fixing Hole
NOTE
1Before Removing LD/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
Slide to the left to release the board
Measurement point
1
Fixing Hole
Locking
2
LD/SMPS B
LD/SMPS A
Fixing Hole
Locking
2
1
Measurement point
Slide to the right to release the board

3-6
3. Disassembly and Reassemble
Description & Screws Picture Description
12
Completed the disassembly.
NOTE
Reassembly procedures are in the reverse orderof disassembly procedures.

3-7
3. Disassembly and Reassemble
3-2. One Connect Disassembly
Description & Screws Picture Description
1
Remove the 3 screws from ASSY COVER P-OC
BOTTOM.
Screws
6003-000282
SCREW-TAPTYPE : M3 x L8, ZPC(BLK)
C/BOTTOM+C/TOP
•
2
Use the Open Tool to unlock each corner.
Open Jigs
Use Open Jig Tool or a similar Tool.•
BN81-14946B
3
Turn One Connect Box upright and Remove Top
Cover.
WARNING
Before Removing SMPS Board
You have to discharge the SMPS by using•
service JIG.
If LED ON9: LED OFF, discharge is
completed.
A/S-DISCHARGE-JIG
BN81-12884A

3-8
3. Disassembly and Reassemble
Description & Screws Picture Description
4
Remove the Cables.
CNW803 (20 Pin)
LEAD CONNECTOR-POWER
5
Remove the 5 screws at each marked screw
location on the board.
Screws
6003-000282
SCREW-TAPTYPE : M3 x L8, ZPC(BLK)
SMPS+S/TOP
•
6
LiftotheblackInsulatorSheettapedtothe
plate assembly at "PULL" marked location. Be
careful not to tear it.
7
Remove the 2 screws on the plate Assembly
then remove the assembly.
Screws
6003-000282
SCREW-TAPTYPE : M3 x L8, ZPC(BLK)
S/TOP+C/BOTTOM
•

3-9
3. Disassembly and Reassemble
Description & Screws Picture Description
8
Remove the 4 screws on the One Connect Board.
Screws
6003-000282
SCREW-TAPTYPE : M3 x L8, ZPC(BLK)
MAIN BOARD+C/BOTTOM
•
9
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 meter available 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 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 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 powercord 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 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 semiconductorcomponents 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 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 together by 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 othersafety 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 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 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 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
2-1. Product information
Model QN**Q9FNAF
Front View
W
* W : Width H : High D : Depth
H
D
Detail View
Color 
Dimensions
(W x H x D)
65"
 
 
75"
 
 
Weight
65"
 
 
75"
 
 

2-2

2-2. Product specication
NOTE


Item QN65Q9FNAFXZA
General Information Product 
 Q
 
Display  65"
 
 
 
 Yes
Video  
 
 
 Yes
 Yes
 
 
 
 
 
 Yes
 Yes
 Yes
 Yes
Audio  Yes
 
 
 
Woofer Yes
 Yes
 Yes
Smart Service  
 
 
 