UHD TV
Chassis : UWU71
Model : UN55MU850DF
UN65MU850DF
SERVICE Manual
UHD TV |
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Contents |
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1. Precautions
2. Product specifications
3. Disassembly and Reassembly
4. Troubleshooting
5. Wiring Diagram
UN**MU850DF
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Contents |
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1. Precautions.................................................................................................................... |
1-1 |
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1-1. |
Safety Precautions .............................................................................................................. |
1-1 |
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1-1-1. Warnings................................................................................................................... |
1-1 |
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1-1-2. Servicing the LED TV................................................................................................ |
1-1 |
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1-1-3. |
Fire and Shock Hazard.............................................................................................. |
1-1 |
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1-1-4. |
Product Safety Notices.............................................................................................. |
1-2 |
1-2. |
Servicing Precautions.......................................................................................................... |
1-3 |
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1-2-1. |
General Servicing Precautions.................................................................................. |
1-3 |
1-3. |
Static Electricity Precautions................................................................................................ |
1-4 |
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1-4. |
Installation Precautions........................................................................................................ |
1-5 |
2. Product Specifications................................................................................................. |
2-1 |
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2-1. |
Product information.............................................................................................................. |
2-1 |
2-2. |
Product specification............................................................................................................ |
2-2 |
2-3. |
Accessories......................................................................................................................... |
2-3 |
2-4. |
Viewing the Functions.......................................................................................................... |
2-5 |
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2-4-1. 2017' Concept................................................................................................. |
2-5 |
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2-4-2. TV Plus...................................................................................................................... |
2-6 |
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2-4-3. Smart Features.......................................................................................................... |
2-7 |
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2-4-4. The Samsung Smart Remote.................................................................................. |
2-10 |
3. Disassembly and Reassembly..................................................................................... |
3-1 |
3-1. Disassembly and Reassembly............................................................................................. |
3-1 |
4. Troubleshooting............................................................................................................ |
4-1 |
4-1. Previous Check ................................................................................................................... |
4-1 |
4-2. How to Check Fault Symptom.............................................................................................. |
4-2 |
4-2-1. Power........................................................................................................................ |
4-2 |
4-2-2. Video......................................................................................................................... |
4-9 |
4-2-3. One Connect........................................................................................................... |
4-10 |
4-2-4. Troubleshooting Video Problems............................................................................ |
4-11 |
4-2-5. Audio....................................................................................................................... |
4-15 |
4-2-6. Network................................................................................................................... |
4-16 |
4-2-7. Smart Hub............................................................................................................... |
4-17 |
4-2-8. Bluetooth / WiFi Module.......................................................................................... |
4-19 |
4-3. Factory Mode..................................................................................................................... |
4-20 |
4-4. Factory Mode Adjustments................................................................................................. |
4-25 |
4-4-1. Detail Factory Option............................................................................................... |
4-25 |
4-4-2. Factory Data............................................................................................................ |
4-27 |
4-5. AV Control Tabe................................................................................................................. |
4-40 |
4-6. Dimensions........................................................................................................................ |
4-47 |
4-7. Updating the TV’s Software............................................................................................... |
4-48 |
5. Wiring Diagram.............................................................................................................. |
5-1 |
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5-1. |
Wiring Diagram.................................................................................................................... |
5-1 |
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5-2. |
Connector............................................................................................................................. |
5-5 |
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5-2-1. |
Main Board................................................................................................................ |
5-5 |
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5-2-2. |
One Connect Board................................................................................................. |
5-10 |
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5-2-3. |
SMPS Board............................................................................................................ |
5-12 |
ANNEX. Exploded View & Part List [UN55MU850DFXZA FA01]......................... |
ANNEX-1 |
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1-1. |
Exploded View.......................................................................................................... |
ANNEX-1 |
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1-1-1. Parts List........................................................................................................ |
ANNEX-1 |
1-2. ONE CONNECT Exploded View............................................................................... |
ANNEX-2 |
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1-2-1. Parts List........................................................................................................ |
ANNEX-2 |
2-1. |
Electrical Parts List.................................................................................................... |
ANNEX-3 |
ANNEX. Exploded View & Part List [UN65MU850DFXZA AA02]........................ |
ANNEX-1 |
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1-1. |
Exploded View.......................................................................................................... |
ANNEX-1 |
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1-1-1. Parts List........................................................................................................ |
ANNEX-1 |
1-2. ONE CONNECT Exploded View............................................................................... |
ANNEX-2 |
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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 under applicable International and/or domestic law.
© 2017 Samsung Electronics Co.,Ltd. All rights reserved.
Printed in Korea
1. Precautions
Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock.
For continued safety, do not attempt to modify the circuit board.
WARNING |
Disconnect the AC power and DC power jack before servicing. |
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1.When servicing the LED TV, Disconnect the AC line cord from the AC outlet.
2.It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this meter periodically.
Before returning the monitor to the user, perform the following safety checks:
1.Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the monitor.
2.Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc.
3.Leakage Current Hot Check:
(READING SHOULD) |
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NOT BE ABOVE 0.5mA |
LEAKAGE |
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DEVICE |
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CURRENT |
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UNDER |
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TESTER |
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TEST |
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TEST ALL |
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EXPOSED METAL |
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SURFACES |
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2-WIRE CORD |
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ALSO TEST WITH |
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PLUG REVERSED |
EARTH |
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(USING AC ADAPTER |
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PLUG AS REQUIRED) |
GROUND |
Do not use an isolation transformer during this test.
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Use a leakage current tester or a metering system that complies with American National Standards |
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WARNING |
Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL |
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Publication UL1410, 59.7). |
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4.With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch first 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
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 identified 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, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate.
1-2
1. Precautions
An electrolytic capacitor installed with the wrong polarity might explode.
WARNING
Before servicing units covered by this service manual, read and follow the Safety Precautions section of
this manual.
CAUTION
If unforeseen circumstances create conflict between the following servicing precautions and any of the
safety precautions, always follow the safety precautions.
NOTE
1.Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before attempting to: (a) remove or reinstall any component or assembly, (b) disconnect PCB plugs or connectors, (c) connect a test component in parallel with an electrolytic capacitor.
2.Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such elements to their original position.
3.After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that the area around the serviced part has not been damaged.
4.Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks).
5.Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect an insulation resistance meter (500 V) to theblades of the AC plug. The insulation resistance between each blade of the AC plug and accessible conductive parts (see above) should be greater than 1 megohm.
6.Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last.
1-3
1. 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 field-effect transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
1.Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your 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.
2.After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent accumulation of an electrostatic charge.
3.Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESDs.
4.Use only a grounded-tip soldering iron to solder or desolder ESDs.
5.Use only an anti-static solder removal device. Some solder removal devices not classified as “anti-static” can generate electrical charges sufficient to damage ESDs.
6.Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive materials.
7.Immediately before removing the protective material from the leads of a replacement ESD, touch the protective material to the chassis or circuit assembly into which the device will be installed.
Be sure no power is applied to the chassis or circuit and observe all other safety precautions.
CAUTION
8.Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD.
1-4
1. Precautions
1.For safety reasons, more than a people are required for carrying the product.
2.Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock.
3.Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.
4.Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed to moisture. Otherwise, it may cause a fire or electric shock.
5.Make sure to turn the power off and unplug the power cord from the outlet before repositioning the product. Also check the antenna cable or the external connectors if they are fully unplugged. Damage to the cord may cause fire or electric shock.
6.Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the highvoltage cable or the antenna falling over may cause fire or electric shock.
7.When installing the product, leave enough space (0.4m) between the product and the wall for ventilation purposes.
A rise in temperature within the product may cause fire.
8.If an equipment is provided with a replaceable battery, and if replacement by an incorrect type could result in an explosion (for example, with some lithium batteries), the following applies:
•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 fire.
•Do not short circuit, disassemble or overheat the batteries.
CAUTION • 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, fire or the like.
1-5
2. Product Specifications
Model |
UN**MU850DF |
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Front View |
H |
* W : Width H : High D : Depth |
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D |
Detail View
Color |
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Front : CHARCOAL BLACK / Stand : CHARCOAL BLACK |
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55" |
Without Stand |
48.2 x 28.1 x 3.9 inches (1224.8 x 712.6 x 98.4 mm) |
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Dimensions |
With Stand |
48.2 x 30.9 x 9.8 inches (1224.8 x 783.6 x 247.9 mm) |
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(W x H x D) |
65" |
Without Stand |
56.8 x 32.9 x 4.5 inches (1441.5 x 835.4 x 114.7 mm) |
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With Stand |
56.8 x 36.0 x 11.5 inches (1441.5 x 913.2 x 291.3 mm) |
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55" |
Without Stand |
38.6 lbs (17.5 kg) |
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Weight |
With Stand |
39.5 lbs (17.9 kg) |
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65" |
Without Stand |
54.7 lbs (24.8 kg) |
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With Stand |
56.2 lbs (25.5 kg) |
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Flash |
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8GB (eMMC 5.0) |
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DDR |
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LPDDR4 64bit @1.6GHz |
2-1
2. Product specifications
NOTE
Design and specifications are subject to change without prior notice.
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Item |
UN**MU850DFXZA |
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General Information |
Product |
UHD |
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Series |
8 |
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Country |
UNITED STATES |
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Display |
Screen Size |
55"/65" |
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PVI Site : no data
- Will add -
2-2
2. Product specifications
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 differ depending on your region.
•The provided accessories may vary depending on the model.
Image |
Product |
Inches |
Code. No |
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Samsung Smart Remote |
All |
BN59-01266A |
• Batteries (AA x 2) |
All |
4301-000101 |
• Power Cord |
All |
3903-001188 |
• User Manual |
All |
BN68-08436A |
• Regulatory Guide |
All |
BN68-08114Q |
• One Connect |
All |
BN91-18726A |
• One Connect Cable |
All |
BN39-02210C |
• CLEAN BACK TERMINAL |
All |
BN63-16527A |
• CLEAN BACK AC INLET |
All |
BN63-16488A |
2-3
2. Product specifications
Image |
Product |
Inches |
Code. No |
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Wall Mount Adapter |
All |
BN59-01266A |
2-4
2. Product specifications
[Quick Setting] |
[Sources] |
[Apps] |
[Live TV] |
2-5
2. Product specifications
[TV Shows]
[Movies]
[Samsung Check-Out]
2-6
2. Product specifications
NOTE
•The image on your TV may differ from the image above depending on your model and geographical area.
Smart Hub
View descriptions of Smart Hub's basic functions.
After pressing the button on your remote control, you can surf the web and download apps with Smart Hub.
•Some of the Smart Hub services are paid services.
•To use Smart Hub, the TV must be connected to the Internet.
•Some Smart Hub features may not be available depending on the service provider, language, or region.
•Smart Hub service outages can be caused by disruptions in your Internet service.
•You can view the entire text of the Terms & Policy document by navigating to £ Settings £ Support £ Terms & Policy. If you want to stop using Smart Hub, you can cancel the agreement.
• To cancel the Smart Hub service agreement though it is a required one, select £ Settings £ Start Setup, and then press the right directional button at the Smart Hub Terms & Conditions, Privacy Policy step.
2-7
2. Product specifications
APPS
Download and run various apps from Smart Hub.
£ š Apps
You can enjoy a wide range of content including news, sports, weather, and games by installing the corresponding apps on your TV.
•To use this feature, the TV must be connected to the Internet.
•When Smart Hub is launched for the first time, the default apps are automatically installed. The default apps may differ with the geographical area.
2-8
2. Product specifications
Pictures/Video/Music
Play media content stored on your TV, USB devices, smartphones, cameras, PCs, etc.
£ s Source
You can play media content saved on storage devices, such as USB devices, mobile devices, and cameras, on the TV.
•You cannot play media content if the content or the storage device is not supported by the TV. For more information, refer to "Read Before Playing Photo, Video, or Music Files."
•To connect the TV to a computer, refer to "Connecting a Computer."
•Backup important files before connecting a USB device. Samsung is not responsible for damaged or lost files.
•To connect the TV to a mobile device, refer to "Connecting a Mobile Device."
2-9
2. Product specifications
(Power)
Press to turn the TV on or off.
(Number pad)
Ǯ˵ʪ͝Χθʪϑϑʪʒ ɇ͝Ї͔ɵʪθϑϩθ̈Χ appears on the bottom of the screen. Select numbers and then select Done to enter a numeric value. Use to change the channel, enter a PIN, enter a ZIP code, etc.
Directional pad (up/down/left/ right)
Moves the focus and changes the values seen on the TV's menu.
(Return)
Returns to the previous menu.
Ǯ˵ʪ͝Χθʪϑϑʪʒ˙ θ ϑʪʀ ͝ʒ θ͔ θʪ the running function is terminated.
Ǯ˵ʪ͝Χθʪϑϑʪʒи˵̷̈ʪц Їɇθʪ watching a program, the previous channel appears.
(Play/pause)
Ǯ˵ʪ͝Χθʪϑϑʪʒ ϩ˵ʪΧ̷ɇцɵɇʀ̧ controls appear. Using these controls, you can control the media content that is playing.
(Smart Hub)
Returns to the Home Screen.
(Voice Interaction)
Runs Voice Interaction. Press the button, say a voice command, and then release the button to run
Voice Interaction Ǯ˵ʪ͝Χθʪϑϑʪʒ once, the guide to Voice Interaction appears.
[ Keep the remote more than 0.6 inches from your face when using Voice Interaction through the mic on the remote.
4 Color buttons
Use these colored buttons to access
ɇʒʒ̈ϩ̈ ͝ɇ̷ Χϩ̈ ͝ϑϑΧʪʀ̈ѣʀϩ ϩ˵ʪ feature in use.
Select
Selects or runs a focused item.
Ǯ˵ʪ͝Χθʪϑϑʪʒи˵̷̈ʪц Їɇθʪ watching content, detailed program
̈͝˙ θ͔ɇϩ̈ ͝ɇΧΧʪɇθϑ Ǯ˵ʪ͝Χθʪϑϑʪʒ again, you can select or run any of the functions displayed.
VOL (Volume)
Move the button up or down to adjust the volume. To mute the
ϑ Ї͝ʒ Χθʪϑϑϩ˵ʪɵЇϩϩ ͝ Ǯ˵ʪ͝ pressed for 1 second or more, the
Accessibility Shortcuts menu appears.
CH (Channel)
Move the button up or down to change the channel. To see the Guide screen, press the button.
Pairing the TV to the Samsung Smart Remote
When you turn on the TV for the first time, the Samsung Smart Remote pairs to the TV automatically. If the Samsung Smart Remote does not pair to the TV
automatically, point it at the remote control sensor of the TV, and then press and hold the buttons labeled and as shown in the figure on the left simultaneously for 3 seconds or more.
2-10
3. Disassembly and Reassemble
This section of the service manual describes the disassembly and reassembly procedures for the LED TV.
1.Disconnect the LED TV from the power source before disassembly.
2.Follow these directions carefully.
-- Use the Samsung Service tool to disassemble the cabinet.
CAUTION |
• Recommend to use the Samsung Service tool. |
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-- Recommended Torque for Cabinet/Stand screws : 22.0 ~ 26.5lbf |
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•A strength of Torque can be changed depending on the situation.
Required Jigs & Tools
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• Open Jig Tool |
BN81-14946A |
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Description & Screws |
Picture Description |
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1 |
Carefully position the TV so that the screen is |
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facing downwards. Make sure to place the TV |
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upon a soft cushion or any material that will |
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prevent damage to the screen. |
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• Place TV face down on the Protective Cushion. |
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2 |
Remove the ASSY STAND P-BOTTOM (R/L) |
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with pulling it down. |
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3-1
3. Disassembly and Reassemble |
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Description & Screws |
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Picture Description |
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3 |
Use Open Jig to release tape in corners and |
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Jig Direction |
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all clips as indicated in red on sides and top & |
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bottom. |
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Gently lift up the Rear Cover starting at the top |
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being careful of function assembly at the bottom. |
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• When the 4 points ( |
)Hook is broken. |
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Although the hook is broken, the appearance |
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of the Rear cover is no problem and Gap |
Direction |
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Direction |
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problem is not appeard after re-assembly. |
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• To prevent the Inner Hook's broken. |
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1. Catch the upper section of the rear cover. |
Jig |
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Jig |
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2. Open the rear cover from top to bottom. |
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• If the wire is bent, need to change the wire. |
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Top : 10 point Locking |
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Locking |
Center : 1 Point Locking |
Locking |
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L : 6 point |
R : 6 point |
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Bottom : 4 point Locking |
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• Panel Back Side View |
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-- |
55 inches |
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-- |
65 inches |
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3-2
3. Disassembly and Reassemble
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Description & Screws |
Picture Description |
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4 |
Remove the Electric tapes, Remove them. |
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NOTE |
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•When assembling the TV, the electric tapes
must be applied on the same locations. Please remember to take a picture of where the tapes were first applied.
• When assembling the Boards, please make sure All Board Mounting Clips are securly inserted.
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Caution |
Dressing Sliding Fixing Point Filament Tape |
5 |
Remove the ASSY BOARD P-FUNCTION. |
ASSY BOARD P-FUNCTION Cable |
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ASSY BOARD P-FUNCTION Cable |
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ASSY BOARD P-FUNCTION |
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6 |
Remove the NETWORK. |
NETWORK Cable |
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NETWORK Cable |
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NETWORK |
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7 |
Remove the ASSY SPEAKER P-FRONT. |
ASSY SPEAKER P-FRONT Cable |
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ASSY SPEAKER P-FRONT Cable |
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ASSY SPEAKER P-FRONT
3-3
3. Disassembly and Reassemble
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Description & Screws |
Picture Description |
8 |
Remove the All Cables. |
Power Cable |
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• 55 / 65 inches |
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-- |
Power Cable |
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-- |
USI-T Cables |
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USI-T Cables |
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9 |
Remove the ASSY PCB MAIN BOARD. |
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Locking |
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• Gently lift up to release the lock (Locking ). |
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• Use both hands to hold (Bottom chassis |
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Guide Fixing Hole ) the board and slide to |
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the left to release the board. |
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NOTE |
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When installing the ASSY PCB MAIN BOARD, |
Slide to the left to release the board |
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verify the board is properly positioned in all 4 |
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mounting slots. |
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Locking |
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Bottom chassis Guide Fixing Hole |
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Locking |
Fixing Hole |
10 |
Remove the DC VSS-PD BOARD. |
Bottom chassis Guide Fixing Hole |
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• Use both hands to hold the SMPS and gently |
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lift up at point indicated by the arrow to |
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release the lock. |
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Locking |
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-- 55 inches |
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Slide to the right to release the board |
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Locking |
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Locking |
Fixing Hole |
3-4
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3. Disassembly and Reassemble |
Description & Screws |
Picture Description |
-- 65 inches |
Bottom chassis Guide Fixing Hole |
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Locking |
Slide to the right to release the board
Locking
11 Completed the disassembly.
NOTE
Reassembly procedures are in the reverse order of disassembly procedures.
3-5
4. Troubleshooting
Check list for initial operation
1.Check the various cable connections first.
-- Check to see if there is a burnt or damaged cable.
-- Check to see if there is a disconnected or loose cable connection.
-- Check to see if the cables are connected according to the connection diagram.
2.Check the power input to the Main Board.
3.How to distinguish if the problem is caused by Main Board.
-- No Video
Symptom |
If the problem is No Video but BLU is on and Indication LED is blinking repeatedly and faster |
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than nomal booting. |
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Check Points |
• Replace the Main Board. |
-- Distorted Picture :
Check Points • Check the inner patterns.
Inner View
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DC VSS-PD |
ASSY PCB MAIN |
BOARD |
ASSY BOARD P-FUNCTION NETWORK |
ASSY SPEAKER P-FRONT |
4-1
4. Troubleshooting
FUNCTION/IR Control
CN1601 (FUNCTION/IR)
1 |
IR_TX_OCM |
7 |
KEY_INPUT2 |
2 |
DGND |
8 |
LED_STB_OUT |
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A3.3V_PW |
9 |
A3.3V_PW |
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IRB_SCL_I2C |
10 |
NC |
5 |
IRB_SDA_I2C |
11 |
NC |
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KEY_INPUT1 |
12 |
NC |
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LED Status / Function Switch
<Function/IR>
1.TV in Standby
99 LED Status
2.If LED is OFF
99 LED 1.7Vdc (pin 8) and VCC for 3.3Vdc (pin 3)
•If missing suspect Function Assy/Cable Assy/Main Board.
3.If LED is ON
99 Switch Operation activates on screen display.
[On Screen Selections with Function Control]
-- If missing:
99 Key _Input1 Pin 6 change to 0V with a command.
-- If wrong voltage or no change:
99 Switch for stuck or miss-operation.
4.Check IR operation with Standard Remote command changes. (3.3V to 2.5V effective DC)
5.SDA, SCL for effective 3.3Vdc (after power on)
-- If missing suspect Function Assy/Cable Assy/Main Board.
4-2
4. Troubleshooting
SMPS Power
SMPS Front : 55 inches
CN9003 (MAIN Connector)
1 |
GND |
2 |
GND |
3 |
GND |
4 |
GND |
5 |
Vamp |
6 |
GND |
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7 |
Vamp |
8 |
OD_Level |
9 |
Vamp |
10 |
Fail Count |
11 |
A13V |
12 |
OD_ON/OFF |
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13 |
A13V |
14 |
BLUEON/OFF |
15 |
A13V |
16 |
PS_ON/OFF |
17 |
A13V |
18 |
GND |
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19 |
GND |
20 |
GND |
21 |
PWM8 |
22 |
PWM7 |
23 |
PWM6 |
24 |
PWM5 |
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25 |
PWM4 |
26 |
PWM3 |
27 |
GND |
28 |
PWM2 |
29 |
PWM1 |
30 |
ANA_DIM |
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Fuse |
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CNL801 (LED Connector) |
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IF2 |
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IF1 |
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3 |
1+ |
4 |
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5 |
1- |
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CN9003 |
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7 |
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9 |
2- |
10 |
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11 |
3+ |
12 |
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CNL801 |
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3- |
14 |
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15 |
4+ |
16 |
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17 |
4- |
18 |
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SMPS Front : 65 inches |
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CNM803 (MAIN Connector) |
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1 |
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2 |
GND |
3 |
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GND |
4 |
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GND |
5 |
Vamp |
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6 |
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GND |
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7 |
Vamp |
8 |
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OD_Level |
9 |
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Vamp |
10 |
Fail Count |
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11 |
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A13V |
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12 |
OD_ON/OFF |
13 |
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A13V |
14 |
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BLUEON/OFF |
15 |
A13V |
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16 |
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PS_ON/OFF |
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17 |
A13V |
18 |
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GND |
19 |
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20 |
GND |
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CNL801 (MAIN Connector) |
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IF2 |
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2 |
IF1 |
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3 |
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5 |
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7 |
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CNM803 |
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9 |
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10 |
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11 |
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12 |
7+ |
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CN9003 |
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13 |
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3- |
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14 |
7- |
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15 |
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16 |
8+ |
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17 |
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4- |
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18 |
8- |
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CNL801 |
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CN9003 (LED Connector) |
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1 |
PWM_DIMMING_OUT12 |
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2 |
PWM_DIMMING_OUT11 |
3 |
PWM_DIMMING_OUT10 |
4 |
PWM_DIMMING_OUT9 |
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5 |
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6 |
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7 |
PWM_DIMMING_OUT8 |
8 |
PWM_DIMMING_OUT7 |
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9 |
PWM_DIMMING_OUT6 |
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10 |
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PWM_DIMMING_OUT5 |
11 |
PWM_DIMMING_OUT4 |
12 |
PWM_DIMMING_OUT3 |
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13 |
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14 |
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PWM_DIMMING_OUT2 |
15 |
PWM_DIMMING_OUT1 |
16 |
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ANA_DIMMING |
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4-3
4. Troubleshooting
TV POWER STANDBY
1. TV in Standby
Standby LED Indicator
-- If Not Lit:
99 AC 120Vac Line -- If missing:
99 120Vac Source and Power Cord -- If OK:
99 Resistance on SMPS Fuse after first removing AC power cord.
2.If fusses are open replace SMPS.
-- If fuses are OK:
99 Standby: A13V (Always On) to Main Board.
-- If any missing remove the SMPS connector to Main Board . 99 Standby A13V again.
•If OK replace Main Board.
•If still missing replace SMPS.
4-4
4. Troubleshooting
TV POWER ON SEQUENCE
1.Power TV On.
99 PS_ON. 2Vdc (when off) changes to 3.3Vdc (on)
-- May already be On if IoT USB is loaded or TV Smart Things Hub mode is active.
2.if voltage error or no change. 99 Jog Function Control Test.
3.If OK replace Main Board.
99 All A13V supplies to full voltage level 12.7VDC.
99 see (SMPS label for approx. STBY and On voltage)
4.If any wrong voltage, remove the SMPS connector to Main Board.
99 A13V again for 12.7VDC.
5.If OK replace Main Board.
6.If still wrong voltage replace SMPS.
99 OD (Over Voltage Detect) : 3.3Vdc (Operating Normal)
7.If 0V or changing, an SMPS or Panel error exists.
8.Perform Backlight Test.
99 Backlight On/Off 0V Off to 5Vdc ON.
99 If missing/error replace Main Board.
[Backlight On/Off]
4-5
4. Troubleshooting
SMPS / PANEL BACKLIGHT (Parallel Wired SMPS Panel Connections)
1.Activate Backlights Test
-- Disconnect Lead Cable from Main Board to Power Supply.
55" : CN9003 65" : CMN803
99 TV Screen for active backlight LEDs.
2.If NO BACKLIGHTS
99 Minus (Control) pins & Plus (Supply) pins voltages on the Panel Connector.
•If no pin voltages replace SMPS.
3.If BACKLIGHTS ON BUT PANEL SECTION(S) OFF
99 The Supply Drive + pins and - pins. All should measure same.
•If a Minus (-) pin measures low (near 0 volts), a string(s) of LEDs are likely open.
•Can remove Panel connector and verify same open backlight voltage condition. Replace Panel.
•If a + Pin measures low voltage disconnect connector to panel. 99 The + Pin Voltage again.
•If it stays low the SMPS is defective, if it goes high, defective Panel.
For BACKLIGHT DIMMING PROBLEMS:
•Go to Menu £ Picture £ Backlight and vary level (0 – 20)
•If no backlight changes observed:
99 Panel Connector minus (-) pin voltages and P-DIM voltages (CN9003) while changing backlight level.
•If minus Panel voltages don’t change, and P-DIM changes, replace SMPS.
•If P-DIM doesn’t change replace Main/T-CON Board.
MUTE |
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4 |
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1 |
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9 |
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EXIT |
to test Panel Backlight Sections. |
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4-6