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 the circuit board.1.
Disconnect the AC power and DC power jack before servicing.2.
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 resistorcapacitor 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).
(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
With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch 4.
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 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 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 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.
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.
1-3
1. Precautions
1-4. Installation Precautions
For safety 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 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 (0.4 m) between the product and the wall for ventilation purposes. 7.
A rise in temperature within the product may cause re.
2. Product specications
2-1. Model Comparison
ModelInchLD450
2. Product specications
Front View
Detail View
Front ColorAllToC RED Black
26"
Dimensions W x D x H
32"
26"
Weight
32"
All
All
All
With Stand660.7 x 222.1 x 482.8 (mm) / 26 x 8.7 x 19 (inch)
Without Stand660.7 x 78.6 x 435 (mm) / 26 x 3.1 x 17.1 (inch)
With Stand795.5 x 251.7 x 571.1 (mm) / 31.3 x 9.9 x 22.5 (inch)
Without Stand795.5 x 80.4 x 510.3 (mm) / 31.3 x 3.2 x 20.1 (inch)
This function enables you to view and listen to photo (JPEG), audio les (MP3) and movie (MPEG) saved on a USB Mass
Storage Class (MSC) device.
Press the POWER button on the remote control or front panel. The TV is powered on.1.
Connect a USB device containing JPEG and / or MP3 and or/MPEG les to the usb jack (USB jack) on the side of the 2.
TV.
If you enter the Media Play mode with no USB device connected the message “No external storage device found. Check the connection status.” will appear. In this case, insert the USB device, exit the screen by pressing the MEDIA.P button on the
remote control and enter the MEDIA.P screen again. MTP (Media Transfer Protocol) is not supported. Certain types of USB
Digital camera and Audio devices may not be compatible with this TV. Media Play only supports USB Mass Storage Class
devices (MSC). MSC is a Mass Storage Class Bulk-Only Transport device. Examples of MSC are Thumb drives and Flash
Card Readers. Please connect directly to The USB port of your TV. If you are using a separate cable connection, there may
be a USB Compatibility problem. Before connecting your device to The TV, Please back up your les to prevent them from
damage or loss of data. SAMSUNG is not responsible for any data le damage or data loss. Do not disconnect The USB
device while it is loading. MSC supports MP3 and JPEG les, while a PTP device supports JPEG les only. The sequential
JPEG format is supported. Photo and Audio les must be named in English, French or Spanish. If not, the les can not be
played. Change the le names to English, French or Spanish if necessary. The higher The resolution of The image, The
longer it takes to display on the screen.
The maximum supported JPEG resolution is 15360 x 8640 pixels. For unsupported or corrupted les, The “Not supported File Format” message is displayed. Auto Chaptering function is supported.
Auto chaptering: When play movie, push enter key. you can see the snapshot of chapter, and you can skip to the ※
chapter using choice the snapshot.
2-9
2. Product specications
2-5-2 Supported Formats
Supported Subtitle Formats
NameFile extensionFormat
MPEG-4 time-based text.ttxttext
SAMI.smiHTML
SubRip.srtstring-based
SubViewer.substring-based
Micro DVD.sub or .txtstring-based
Supported Video Formats
FileContainerVideo CodecResolution
Divx 3.11 / 4.x / 5.1 / 6.01920 x 10806 ~ 308
*.avi
*.mkv
*.asfASF
*.wmvASFWindow Media Video v91920 x 10806 ~ 3025WMA
*.mp4MP4
*.3gp3GPP
*.vro
*.mpg
*.mpeg
*.ts
*.tp
*.trp
*.rmvbRMVBRV 3.0 / RV4.01920 x 10803010RealAudio 6.9.10
AVI
MKV
VRO
VOB
PS
TS
H.264 BP / MP / HP1920 x 10806 ~ 3025
Divx 3.11 / 4.x / 5.1 / 6.01920 x 10806 ~ 308
H.264 BP / MP / HP1920 x 10806 ~ 3025
XviD1920 x 10806 ~ 308
MPEG4 SP / ASP1920 x 10806 ~ 308
Motion JPEG640 x 4806 ~ 308
Divx 4.x / 5.1 / 6.01920 x 10806 ~ 308
XviD1920 x 10806 ~ 308
MPEG4 SP / ASP1920 x 10806 ~ 308
Motion JPEG640 x 4806 ~ 3025
MPEG4 SP / ASP1920 x 10806 ~ 308
XVID1920 x 10806 ~ 308
H.264 BP/MP / HP1920 x 10806 ~ 3025
MPEG4 SP / ASP1920 x 10806 ~ 308
MPEG21920 x 108024 / 25 / 3030
MPEG11920 x 108024 / 25 / 3030
MPEG11920 x 108024 / 25 / 3030
MPEG21920 x 108024 / 25 / 3030
MPEG21920 x 108024 / 25 / 3030
H.2641920 x 10806 ~ 3025
VC11920 x 10806 ~ 3025
Frame rate
(fps)
Bit rate
(Mbps)
Audio Codec
MP3 / AC3 /
LPCM / ADPCM /
DTS Core
MP3 / AC3 / LPCM
/ ADPCM / WMA
MP3 / ADPCM /
AAC
ADPCM / AAC
AC3 / MPEG /
LPCM
AC3 / MPEG
/ LPCM /AAC
AC3 / AAC / MP3 /
DD+ / HE-AAC
2-10
2. Product specications
Other Restrictions
NOTE ※
If there are problems with the contents of a codec, the codec will not be supported. -
If the information for a Container is incorrect and the le is in error, the Container will not be able to play xcorrectly. -
Sound or video may not work if the contents have a standard Bitrate / Frame rate above the compatible Frame / Sec xlisted in the table above.
Supports up to H.264, Level 4.1 -
H.264 FMO / ASO / RS, VC1 SP / MP / AP L4 and AVCHD are not supported.
XVID, MPEG4 SP, ASP: -
Below 1280 x 720: 60 frame max -
Above 1280 x 720: 30 frame max -
H.263 is not supported. -
GMC 2 is not support. -
Only Samsung Techwin MJEPG is supported. -
Video DecoderAudio codec
Supports up to WMA 7, 8, 9, STD. -
WMA 9 PRO does not support 2 channel excess multi channel or lossless audio.
WMA sampling rate 22050 Hz mono is not supported. -
2-11
2. Product specications
2-6. Accessories
ProductDescriptionCode. NoRemark
Remote ControlAA59-00486A
Power Cord3903-000601
Owner’s InstructionsBN68-03375A
Warranty Card /
Safety Guide Manual
(Not available in all locations)
AA68-03242L
AA68-03533A
Samsung Electronics
Service center
3. Disassembly and Reassembly
3. Disassembly and Reassembly
This section of the service manual describes the disassembly and reassembly procedures for the LCD TV.
WARNING: This LCD TV contains electrostatically sensitive devices. Use caution when handling these components.
3-1. Disassembly and Reassembly
Cautions: 1. Disconnect the LCD TV from the power source before disassembly.
2. Follow these directions carefully; never use metal instruments to pry apart the cabinet.
DescriptionInchPicture DescriptionScrews
Place monitor face down on cushioned 1.
table.
Remove the screws from the stand. 2.
26": 3 EA
32": 4 EA
6002-001294
26"
32"
3-1
3-2
3. Disassembly and Reassembly
DescriptionInchPicture DescriptionScrews
Remove stand.3.
26"
32"
Remove the screws of rear-cover. 4.
26": 7 EA
32": 8 EA
6002-001294
26"
32"
3-3
3. Disassembly and Reassembly
DescriptionInchPicture DescriptionScrews
Lift up the rear-cover.5.
Remove the left and right speaker.6.
Remove the screws of main board. 7.
26", 32": 4 EA
Remove the screws of IP board.
26", 32": 5 EA
26"
32"
6001-002284
6003-001439
3-4
3. Disassembly and Reassembly
DescriptionInchPicture DescriptionScrews
Remove the screws of stand link. 8.
26": 2 EA
32": 5 EA
Remove the screws of panel and front.
26" / 32": 2 EA.
screw is hidden under speaker
26"
32"
6001-002284
6003-001003
Lift up the stand link.9.
Lift up the panel.10.
Reassembly procedures are in the reverse order of disassembly procedures. ※
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