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Service Manual is a property of Samsung Electronics Co.,Ltd.
This
Any unauthorized use of Manual can be punished under applicable
International and/or domestic law.
Follow these safety, servicing, and ESD precautions to prevent damage and to protect against potential hazards such as
electrical shock.
1-1-1. Warnings
For continued safety, do not attempt to modify any circuitry.
1.
1-1-2. Servicing the LCD TV
When servicing the LCD 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.
2.
Check the calibration of this meter periodically.
1-1-3. Fire and Shock Hazard
Before returning the LCD TV to the user, perform the following safety checks:
Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the
1.
chassis and other metal parts in the LCD TV.
Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and
2.
compartment covers or shields, isolation resistor capacitor networks, mechanical insulators, etc.
Leakage Current Hot Check (Figure 1-1):
3.
WARNING : Do not use an isolation transformer during this test.
Use a leakage current tester or 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 switch
4.
(READING SHOULD)
NOT BE ABOVE 0.5mA
DEVICE
UNDER
TEST
2-WIRE CORD
*ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
TEST ALL
EXPOSED METAL
SURFACES
LEAKAGE
CURRENT
TESTER
EARTH
GROUND
Figure 1-1. Leakage Current Test Circuit
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.
1-1-4. Product Safety Notices
Some electrical and mechanical parts have special safety related 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 identied 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.
1-1
1-2
1. Precautions
1-2. Servicing Precautions
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 conict between the following servicing precautions and any of the
safety precautions, always follow the safety precautions.
1-2-1 General Servicing Precautions
Always unplug the unit’s AC power cord from the AC power source and disconnect the DC Power Jack before
1.
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.
Some components are raised above the printed circuit board for safety. An insulation tube or tape is sometimes
2.
used. The internal wiring is sometimes clamped to prevent contact with thermally hot components. Reinstall all such
elements to their original position.
After servicing, always check that the screws, components and wiring have been correctly reinstalled. Make sure that
3.
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,
4.
input terminals and earphone jacks).
Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON.
5.
Connect an insulation resistance meter (500 V) to the blades 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 mega ohm.
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.
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-effect
transistors. The following techniques will reduce the incidence of component damage caused by static electricity.
Immediately before handling any semiconductor components or assemblies, drain the electrostatic charge from your
1.
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 LCD TV.
After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent
2.
accumulation of an electrostatic charge.
Do not use freon-propelled chemicals. These can generate electrical charges sufcient 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 classied as “anti-static” can generate
5.
electrical charges sufcient to damage ESDs.
Do not remove a replacement ESD from its protective package until you are ready to install it. Most replacement ESDs
6.
are packaged with leads that are electrically shorted together by conductive foam, aluminum foil or other conductive
materials.
Immediately before removing the protective material from the leads of a replacement ESD, touch the protective
7.
material to the chassis or circuit 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,
8.
or lifting your foot from a carpeted oor can generate enough static electricity to damage an ESD.
1. Precautions
1-4. Installation Precautions
For safety reasons, more than two 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 or closet. The increased internal
3.
temperature may cause re.
Bend the external antenna cable when connecting it to the product. This is a measure to protect it from being exposed
4.
to moisture. Otherwise, it may cause a re or electric shock.
Make sure to turn the power off 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 (0.4inches) between the product and the wall for ventilation
7.
purposes. A rise in temperature within the product may cause re.
1-3
1. Precautions
Memo
1-4
2. Product specications
2. Product specications
2-1. Feature & Specications
ModelUN46B8000XF
Feature
Digital-TV, RF, 4-HDMI, 1-Component, 1-AV, USB1, USB2 (HDD is available only in USB1), D-SUB, Internet@TV
�
Brightness : 500cd/m
�
Contrast Ratio : 5000000:1
�
Response time : 3ms
�
Dynamic contrast, Super-PVA
�
PIP(in HDMI 1, 2, 3, 4, component, PC Mode and Sub picture is available in TV analog and digital mode)
It offers contents to maximize the benets of the large screen size.
A. In overlay mode, the video plays in its native size, covering up to the full screen.
Graphical elements in the graphical plane are overlaid on top of the video plane.
B. In overlay mode while displaying the sidebar, at least 2/3 of the video is free of graphical overlays.
C. In overlay mode while displaying the dock, at least 3/4 of the video is free of graphical overlays.
D. YahooTV is executed to overlay mode at rst time.
2-3-2. Viewport Mode
A. In viewport mode, the video plays in a scaled-down size, covering only a portion of the screen. This smaller viewing
area for video is called the viewport.
B. The viewport should cover at least half of the screen area. Graphics are displayed in areas outside of the viewport.
C. The purpose of the viewport mode is to display the entire video without obstruction.
D. The viewport mode preserves the 16:9 aspect ratio of the video.
2-6
2. Product specications
2-3-3. Yahoo OOBE
Description
A. All users go through OOBE (Guided Setup) to access the dock the rst time.
B. All users must specify a location and accept the TOS before the TV Widgets service are accessible. The rest of the
screens are optional.
C. When user inputs Back button (Return key), TV goes back to the previous screen.
D. IF user input EXIT key, OOBE is goes to hide mode. And user input WIDGET key, previous screen is displayed again.
E. Back Ground of OOBE is TV video.
Start page explain value propositionUser must choose country before
TOS is accepted.
Country is sorted by Alphabet.
If user select Up/Down arrow,
Before/Next page is displayed.
TOS will updated based on country selected.Optional Screen: users are asked to enter in
a prole name. A default name
(Prole One) is given to them if they
do not create a name.
Tutorial: Screens explaining how dock works.
2-7
2. Product specications
Tutorial: Screens explaining how dock works.Tutorial: Screens explaining the sidebar and global
nav buttons.
Final screen before dock comes up.
2-8
2. Product specications
2-3-4. Gallery Widget
Overview
A. In the TV Widgets, widget gallery services are online services where widget developers publish widgets for download.
B. The default widget gallery for the platform is the Widget Gallery Services.
C. To nd and install new widgets, launch the gallery widget from the dock.
D. The gallery widget has access to a privileged set of APIs accessible only to Yahoo! signed widgets.
E. These privileged APIs are used to download and install software on your device.
F. Third party widget developers do not have access to these privileged APIs.
G. The gallery widget can potentially be extended by an OEM to connect to one or more widget gallery back-end servers.
H. The Yahoo! Gallery Widget provides the only way to install new widgets from the Widget Gallery Services, which
contain a catalog of 3rd party widgets managed by Yahoo!.
Note: the above image will be updated and visuals elements laid out in this may not apply.
2-9
2. Product specications
2-3-5. Prole Widget
Overview
A. The Prole widget is the way to congure your widget environment for your user prole. With the settings
widget you can congure:
i. Prole Management: Create, edit and switch proles.
ii. Security Settings: Setup a Prole and/or Owner PIN for security purposes.
iii. System Settings: Repeat guided setup, set and edit location and restore factory defaults
B. The Prole widget is located in the dock. Press the TV Widget launch key on the remote control to launch the dock,
and then press the RIGHT or LEFT ARROW until you focus on the settings widget.
C. User prole name is displayed on the Prole snippet.
D. Select the Prole snippet to launch the settings widget.
E. The Prole widget opens up into its sidebar.
F. The following functionality is available from the Prole menu:
i. Switch Prole
ii. Settings for Current Prole
iii. System Settings
iv. Administrative Controls
v. Sign-out of Current Prole
2-10
2-3-6. Flickr TV Widget
Description
A. Flickr TV Widget is a Widget for displaying photos from Flickr. You can view your:
i. Personal photos
ii. Your sets of photos
iii. Explore Flickr’s user community photos
iv. Your favorite photos
v. Your contacts’ photos
vi. Your groups
Initial Sidebar View
2. Product specications
A. If the user is not signed and user is signed but user has no photo then the default images will be displayed from the
Flickr Explore category.
B. If the user is signed in and the user has 1 photo or more photos, then the photos will be displayed in the top portion of
the Widget Sidebar.
C. The picture layout changes based on the number of photos (1, 2, 3, or 4).
2-11
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