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.
WARNING
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 of this 2.
meter periodically.
1-1-3. Fire and Shock Hazard
Before returning the monitor 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 monitor.
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:3.
Disconnect the AC power and DC power jack before servicing.
(READING SHOULD)
DEVICE
UNDER
TEST
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
NOT BE ABOVE 0.5mA
2-WIRE CORD
TEST ALL
EXPOSED METAL
SURFACES
LEAKAGE
CURRENT
TESTER
EARTH
GROUND
Do not use an isolation transformer during this test.
Use a leakage current tester or a metering system that complies with American National Standards
WARNING
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 rst 4.
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
Page 5
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 identied by
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.
on schematics and parts lists. A substitute
Page 6
1-3
1. Precautions
1-2. Servicing 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
CAUTION
NOTE
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 used. 2.
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, input 4.
terminals and earphone jacks).
Insulation Checking Procedure: Disconnect the power cord from the AC source and turn the power switch ON. Connect 5.
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.
this manual.
If unforeseen circumstances create conict between the following servicing precautions and any of the
safety precautions, always follow the safety precautions.
Page 7
1-4
1. Precautions
1-3. Static Electricity 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-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 monitor.
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 material 7.
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
Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or 8.
lifting your foot from a carpeted oor can generate enough static electricity to damage an ESD.
Page 8
1-5
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 temperature 3.
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 (0.4m) between the product and the wall for ventilation 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 an 8.
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 re.•
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, re or the like.•
Page 9
2. Product Specications
2-1. Product information
ModelUN40H5003AF
2. Product specications
W
Front View
Detail View
Front ColorBlack
Dimensions
(W x H x D)
Weight40"
40"
With Stand918 x 592.6 x 227.6 mm
Without Stand918 x 533.2 x 94 mm
With Stand9.6 kg
Without Stand7.6 kg
H
* W : Width H : High D : Depth
D
2-1
Page 10
2-2
2. Product specications
2-2. Product specication
2-2-1. Detailed Specications
NOTE
Design and specications are subject to change without prior notice.
ItemUN40H5003AFXZA
General Information
Display
Video
Audio
ProductLED
Series5
Country UNITED STATES
Inch40
Resolution1,920 x 1,080
Ultra Clear PanelNo
Clear Motion Rate120
Micro DimmingNo
Precision Black (Local Dimming)N/A
Wide Color Enhancer (Plus)Yes
Color AccuracyNo
Auto Depth EnhancerNo
Auto Motion PlusNo
Film ModeYes
Dolby MS10 / MS110Dolby Digital Plus / Dolby Pulse
DTS Studio Sound / DNSe+DTS Studio Sound
DTS Premium Sound / DTS Premium
Sound 5.1
3D SoundNo
DTS Premium Audio
Smart TV
Auto Volume LevelerYes
Sound CustomizerNo
Sound Output (RMS)10W x 2
Speaker TypeDown Firing + Full Range
WooferNo
HD AudioNo
Smart HubNo
Samsung SMART TVNo
On TVNo
Movies & TV ShowsNo
MultimediaNo
AppsNo
Page 11
2-3
2. Product specications
ItemUN40H5003AFXZA
Smart TV
Smart Interaction
Smart Convergence
Tuner/Broadcasting
Connectivity
GameNo
Multi-Screen (Dual / Quad Screen)No
Web BrowserNo
Voice InteractionNo
Camera Built-inNo
Motion controlNo
Contents StreamingNo
Screen MirroringNo
ISP Bound ServiceNo
RUINo
RVUNo
Samsung SMART ViewNo
Smart HomeNo
DTV TunerATSC / Clear QAM
Analog TunerYes
HDMI2
USB1
Component In (Y/Pb/Pr)1
Composite In (AV)1 (Common Use for Component Y)
Ethernet (LAN)No
HeadphoneNo
Audio Out (Mini Jack)No
Digital Audio Out (Optical)1
PC In (D-sub)No
PC/DVI Audio In (Mini Jack)No
RF In (Terrestrial / Cable input / Satellite
input)
Batteries (AAA x 2)• 4301-000103User Manual• BN68-05829P
ImageProductCode. No
Holder-Wire Stand• BN61-08370A
Page 16
3. Disassembly and Reassemble
3. Disassembly and Reassembly
This section of the service manual describes the disassembly and reassembly procedures for the LED TV.
This LED TV contains electrostatically sensitive devices. Use caution when handling these components.
WARNING
3-1. Disassembly and Reassembly
Disconnect the LED TV from the power source before disassembly.1.
Follow these directions carefully; never use metal instruments to pry apart the cabinet.2.
CAUTION
Place TV face down on cushioned table.
If there is no additional coment, it is same for all inches.3.
DescriptionPicture DescriptionScrews
1
Remove 4 screws from the Stand.
2
Remove Stand.
3
Torque :
7~ 8Kgf.cm
6003-001782
3-1
Page 17
3-2
3. Disassembly and Reassemble
DescriptionPicture DescriptionScrews
Remove 16 screws of Rear-Cover.
4
Remove the Rear-Cover.
5
Torque :
7~ 8Kgf.cm
6003-001782
Torque :
7~ 8Kgf.cm
6003-002755
Remove 8 screws of main board and IP
6
board and Panel.
Remove the connector of main board, IP
7
board, Panel and etc.
Torque :
7~ 8Kgf.cm
001-002756
Page 18
3-3
3. Disassembly and Reassemble
Completed disassembly.
8
DescriptionPicture DescriptionScrews
NOTE
Reassembly procedures are in the reverse order of disassembly procedures.
Page 19
3-4
3. Disassembly and Reassemble
3-2. Disassembly(PTC)
How to disassembly
DescriptionPicture DescriptionRefer
Place TV face up on cushioned table.
1
Remove the function Assy.
2
Disassemble ASSY MISC P-CHASSIS
3
TOP(U/D & L/R)with hooks.
Page 20
3-5
3. Disassembly and Reassemble
DescriptionPicture DescriptionRefer
Disassemble COF lm to the guide with
4
care not to make it bent or folded.
CAUTION
Disassemble COF lm to the guide with
care not to make it bent or folded.
Disassemble ASSY FRAME P-MOLD
5
MIDDLE (L/R) & ASSY FRAME P-MOLD
MIDDLE (U/D) with hooks.
* HOOK POINT
U : 6 pts. D : 5 pts. R : 4 pts. L : 4 pts.
CAUTION
Check whether the hooks are completely
disassembled.
1
2
2
2
1
2
6
Completed.
Page 21
3-6
3. Disassembly and Reassemble
How to reassembly
DescriptionPicture DescriptionRefer
Place PCT.
1
Assemble ASSY MISC P-CHASSIS
2
TOP(L/R) and ASSY MISC P-CHASSIS
TOP( U/D) using the hook.
* HOOK POINT
Top : 6Point / Bottom : 5 Point
Right : 4-Point / Left : 4-Point
CAUTION
Check whether the hooks are completely
assembled.
Place Assy MISC P-Open Cell on the
3
FRAME-MOLD MIDDLE GUIDE in the
same direction as the picture.
CAUTION
Be careful not to make COF lm bent or
folded during assembly of open cell.
1
2
2
2
1
2
Page 22
3-7
3. Disassembly and Reassemble
DescriptionPicture DescriptionRefer
When Source PCB attach CHASSIS
4
BOTTOM, it should be attach the Gasket.
Assemble ASSY MISC P-CHASSIS
5
TOP(L/R) & ASSY MISC P-CHASSIS
TOP(U/D) with hooks.
* HOOK POINT
Top : 6Point / Bottom : 5 Point
Right : 4-Point / Left : 4-Point
CAUTION
Check whether the hooks are completely
assembled.
Page 23
3-8
3. Disassembly and Reassemble
DescriptionPicture DescriptionRefer
When Source PCB attach CHASSIS
4
BOTTOM, it should be attach the Gasket.
Assemble ASSY MISC P-CHASSIS
5
TOP(L/R) & ASSY MISC P-CHASSIS
TOP(U/D) with hooks.
* HOOK POINT
Top : 6Point / Bottom : 5 Point
Right : 4-Point / Left : 4-Point
CAUTION
Check whether the hooks are completely
assembled.
Page 24
3-9
3. Disassembly and Reassemble
NOTE
Notice for ASSY MISC P-CHASSIS TOP Assembly
Assembly process of mechanical tools (1)
1. To apply countermeasures against breaking defect
1-1. Causes
-During placement of a panel and MF guide, the panel is hung
due to embo interrruption, which provokes the panel to be
broken which T/C assembly.
1-2. Solutions
-To conduct 4 siodes touching inspection by operators.
-To quantify SOP because of operational defects between DS
photoelectricity progress.
Assembly process of mechanical tools (2)
2. To apply countermeasures against TAB IC dent defect
2-1. Causes
-A dent occurs due to T/C & S-IC interrruption which is caused
by T/C assembly on the opposite or the L/R of the S-PCB.
2-2. Solutions
-To x the top chassis by making it leant based on S-PCB.
-To quantify SOP because of operational defects between DS
photoelectricity progress.
Page 25
4. Troubleshooting
4-1. Troubleshooting
4-1-1. Previous Check
Check List for Initial operation
AC Power Cord connected to the TV and the wall receptacle. -
Standby Power/IR Indicator LED is turned On. -
If Power/IR Indicator is not on check 10p power cable is connected and for correct Standby Voltage from SMPS to Main. Also check Jog Function Cable.
Power turned On with Jog Function or Remote. -
Power on command from main Board to SMPS. -
Power/IR Indicator Flashes. -
Panel Back Lights are turned On. -
If no Backlights, unplug AC Power Cord, unplug 10 pin connector to SMPS, plug in AC Power Cord, Back light should come on. Check Main Board operation for error.
Power/IR Indicator goes off. -
Picture or banner is displayed. -
* If nothing is displayed , check the LVDS cable.
4. Troubleshooting
Main Ass'y
10p cable
LVDS Cable
Speaker
CNM803 (to Powr board)
1A13V_PW6PS On/Off
2UNDER_DRV7A13V_PW
3A13V_PW8GND
4PWM_BLU9GND
5A13V_PW10GND
Power Ass'y
CNL802 (SMPS TO PANEL)
1D+6S2-
2D+7S3+
3S1-8D-
4S2+9D-
5N.C
Inverter Cable
4-1
Page 26
4-2
4. Troubleshooting
4-2. How to Check Fault Symptom
No power & no picture
Diagnostics
Check the LED of function
Yes
Open the BACK-COVER and check the
10P power cable
Yes
Check the A13V of BD207
Yes
Check the Q206 base, voltage must be
no larger than 0.5V
Yes
Check the A5V of L202, B13V of Q202,
B5V of Q207.
Yes
Check the A3.3V/B3.3V of Main IC
Check B1.8V of DDR IC
IC201#1, IC205#3, IC204#5
Yes
No
No
No
No
No
No
Check link of AC voltage
Connect the 10p power cable
Change the SMPS
Change the Main Assy
Change the Main Assy
Change the Main Assy
Check the 13V of LVDS
Q204#1/2/5/6
Yes
Change the LVDS
No
No
Change the PANLE
Page 27
MAIN IC
FLASH
TUNER
IC201
L202
IC205
Q207
IC204
BD207
Q204
Q203
Q202
4-3
4. Troubleshooting
Location of Parts
Main Board_Front
Page 28
4-4
4. Troubleshooting
No Video (HDMI 1, 2 - Digital Signal)
Diagnostics
If the LED of POWER is off,
check Back Light is turn on
Yes
Check the SelfTest.
(Support Self Diagnosis Picture Test)
Remain other Problem
Yes
choose the HDMI SOURCE
Check the HDMI CONNECTOR
Yes
Check a below signal
CN401 CN404
(Pin#12,10 , #1#3, #4#6, #7#9 )(HDMI1)
(HDMI RX_Clk , RX_Data)
Yes
Check a below signal
TP-EVEN_TXCLK+, EVEN_TXCLK-
TP-EVEN_TX*+, EVEN_TX*-
No
No
No
No
No
Check what is status ‘Stand-by’ or not
Check for connecting external device
Input the HDMI signal
Check CN401,CN404
Check the HDMI cable
Change the Main Assy
Check IC1001 (XL1)
Change the Main Assy.
Yes
Check the LVDS
/ Change the LCD panel
Page 29
4-5
4. Troubleshooting
Location of Parts
Main Board_Front
A
Detail
ODD_TX0
ODD_TX1
ODD_TX2
A
#12
#9
#6
#3
EVEN_TX0
EVEN_TX1
EVEN_TX2
EVEN_TXCLK
ODD_TX3
#10
#7
#4
#1
ODD_TXCLK
ODD_TX3
ODD_TX4
ODD_TX4
Page 30
4-6
4. Troubleshooting
No picture (COMPONENT)
Diagnostics
If the LED of POWER is off,
check Back Light is turn on
Yes
Check a video source & cable
Yes
Check the SelfTest.
(Support Self Diagnosis Picture Test)
Remain other Problem
Yes
Check
R426(COMP1_Y/CVBS)
R424(COMP1_PR)
R425(COMP1_PB)
Yes
Check the assembling state of LVDS /
Change the Panel
No
No
No
No
Check what is status ‘Stand-by’ or not
Check Video signal
Check for connecting external device
Check the CN403
Change the Main Assy
Page 31
4-7
4. Troubleshooting
Location of Parts
Main Board_Front
A
B
Detail
R425
R426
A
R424
ODD_TX0
ODD_TX1
ODD_TX2
ODD_TXCLK
ODD_TX3
ODD_TX4
B
EVEN_TX0
EVEN_TX1
EVEN_TX2
EVEN_TXCLK
ODD_TX3
R421
R422
ODD_TX4
Page 32
4-8
4. Troubleshooting
No sound
Diagnostics
Check the source & sound cable.
(Comp/PC/DVI to HDMI)
Yes
Check the SelfTest.
(Support Self Diagnosis Picture Test)
Remain other Problem?
Yes
Check the DC B13V to BD305
Yes
Check the sound data
- L-, L+, R-, R+
Yes
Change the speaker
No
No
No
No
Input a Sound source
Check for connecting external device
Change the Main Assy
Check the IC1001 (XL1) / IC301
(Sound AMP)
Change the Main Assy
Page 33
4-9
4. Troubleshooting
Location of Parts
Main Board_Front
A
B
Detail
A
L- L+ R- R+
B
BD305
Page 34
4-10
4. Troubleshooting
4-3. Factory Mode Adjustments
4-3-1. Detail Factory Option
NOTE
If you replace the main board with new one, please change the factory option as well.
The options you must change are "Type".
UN40H5003AFXZA
Inches40"
Vendor INX
PANEL
SMPS BOARD
MAIN BOARD
ByteItem
0Factory Reset-
1Type40D6AF0D
2Basic ModelH5003
3SVC Model5003
4Local SetUS
5TunerATSC / Clear QAM
6Ch tableNONE
CodeBN95-01856A
Spec.V400HJ6-PE1
Vendor DYREL
Code BN44-00769A
Spec.L40HF_EDY
Chassis Ass'yBN91-13503E
PBA Ass'yBN94-07592A
Page 35
4-3-2. Entering Factory Mode
4-11
4. Troubleshooting
To enter ‘Service Mode’ Press the remote -control keys in this sequence :
If you do not have Factory remote control•
Power OFF MENU182Power On
If you have Factory remote control•
INFOFactory
If you don’t have Factory remote control, can’t control some menus. •
Initial SERVICE MODE DISPLAY State
Option
Sub Options
Sound
Debug
SVC
W/B ADJUST
ADC ADJUST
Advanced
Tuner Self Test
DTV TUNER SLEF
Shop Option
OnDTV
T-MXL1AUSC-0708.0
Build Date : Apr 8 2014
HDCPSUCCESS
Option
USB SerialOff
40A6AH0S
-
Page 36
4-12
4. Troubleshooting
4-3-3. Factory Data
Note
Version of the software is written in 0002.•
Black• : I should not be possible to adjust or change that does not require a change item
Blue : Adjustment Services for the corresponding
Red : Items that are secured
Option
Factory Menu NameDataRange
Factory Reset-
Type40D6AF0D
SW ModelUH5003
BOM Model5003
Ch TableNONE
Local SetUS
TUNERMXL601
MRT Option
LVDS FORMATJEIDA
HV FlipOff
China HDOff
NT ConversionOn
Num of AV1
Num of COMP1
Num of HDMI2
Num of USB1
e-Pop DefaultON
Num of Headph.0
Num of Optical1
Front ColorN/A
Debug
Factory Menu NameDataRange
Spread Spectrum
spread spectrum
period
amplitude
DDR spread
Eco Sensor Debug
Page 37
Svc
4-13
4. Troubleshooting
Factory Menu NameDataRange
Test Patternoff
Delete S/NFAIL
W/B ADJUST
Factory Menu NameDataRange
Picture Optionsdynamic
color tonecool
R-gain79
G-gain128
B-gain150
R-Offset1024
G-offset1024
B-offset1024
sub_contrast142
sub_brightness1024
ADC ADJUST
Factory Menu NameDataRange
Mode
R-gain
G-gain
B-gain
R-Offset
G-offset
B-offset
AUTO ADC
--
4626
4522
4626
2048
256
2048
--
Advanced
Factory Menu NameDataRange
PWMMax
WCE
Enhance
EPA Standard
ColorMapping
7.5 IRE NTSC
100
On
Page 38
4-14
4. Troubleshooting
Factory Menu NameDataRange
Gamma
0.93
Tuner Self Test
Factory Menu NameDataRange
H sync Magn.
Burst Freq
IF Level
Bottom level
Peak Level
Synctip noise level
Tuner power level
H sync Magn.TH
IF Level TH
Bottom level TH
Synctip noise TH
Tuner power TH
0x0000
No-BURST
0x0000
0x0000
0x0000
0x0000
0dB
0x0000
0x0072
0x004F
0x0005
-DB60
CVBS Starus
Check Result
Fail
Fail
DTV TUNER SELFTEST
Factory Menu NameDataRange
Lock Status
IF level
Tuner power level
BER(dB)
SNR(dB)
IF level TH
Tuner power TH
BER(dB) TH
SNR(dB) TH
Check Result
No Lock
0x0000
0dB
0
0
0xA300
-90dB
0
16
Fail
Shop Mode
Factory Menu NameDataRange
Shop mode
Off
Page 39
4-4. White Balance
4-15
4. Troubleshooting
4-4-1. Calibration
Into the Factory Mode.1.
Select 2. SVC Menu.
Select 3. ADC/WB menu.
Select 4. ADC menu.
Option
Control
SVC
Expert
ADC/WB
Advanced
4-4-2. Service Adjustment
ADC
AV Calibration
Comp Calibration
HDMI Calibration
You must perform Calibration in the Lattice Pattern before adjusting the White Balance.
Alternative Software (Backup) shows The previous version that will be replaced.•
Software is represented as ‘Year/Month/Day_Version’. The more recent the date, the newer the software version •
Installing the latest version is recommended.
If The internet connection doesn’t operate properly, connection can be broken, please retry downloading. If the •
problem still happens, download by USB and upgrade.