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LED TV Chassis : U8MC Model : UN40H4203AH UN48H4203AH SERVICE Manual LED TV Contents 1. Precautions 2. Product specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. Wiring Diagram UN**H4203AH...
1. Precautions 1. Precautions 1-1. Safety Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1-1. Warnings For continued safety, do not attempt to modify the circuit board. Disconnect the AC power and DC power jack before servicing.
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.
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 this manual. CAUTION If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
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 field-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 body by touching a known earth ground.
1. Precautions 1-4. Installation Precautions For safety reasons, more than a people are required for carrying the product. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may cause fire.
2. Product specifications 2. Product Specifications 2-1. Product information Model UN**H4203AH Front View * W : Width H : High D : Depth Detail View Front Color Black (Panel) Set with Stand 914.2 x 586.4 x 196.4 mm / 36.0 x 23.1 x 7.7 inches 40H42 Set without 914.2 x 547.9 x 90.9 mm / 36.0 x 21.6 x 3.6 inches...
DTS Premium Sound / DTS Premium Sound DTS Premium Sound 5.1 3D Sound Auto Volume Leveler Sound Output (RMS) 10W x 2 Speaker Type Down Firing + Full Range Woofer HD Audio Smart TV Smart Hub Samsung SMART TV On TV Movies & TV Shows...
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Smart TV Multimedia Apps News On Game My Space Social Fitness Kids Multi-Screen (Dual / Quad Screen) Skype™ on Samsung TV Web Browser AllShare Control Search Smart Interaction Voice Interaction Voice Control Camera Built-in Face recognition Motion control Smart Convergence...
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Bezel Type Slim Type Normal Front Color Black Light Effect (Deco) Stand Type Square Swivel (Left/Right) Camera Type Additional Feature Samsung 3D 3D Converter Instant On N-KIT Quad Core+ Accessibility Yes(Zoom) Digital Clean View Auto Channel Search Auto Power Off...
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Analog Clean View Triple Protector Golden Bridge Eco Feature Eco Mark Eco Label Eco Sensor Energy Efficiency Class Mercury Content 0.0 mg Lead Presence Accessory 3D Active Glasses (Included) Remote Controller Model TM1250A Batteries (for Remote Control) Samsung Smart Touch Control (Included)
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2. Product specifications Item UN**H4203AHXPA Accessory Electric Stand Support Electric Wall Mount Support Ultra Slim Wall Mount Supported Mini Wall Mount Supported Vesa Wall Mount Supported Floor Stand Support TV Camera (Included) IR Extender Cable (Included) Network Speaker (Included) Wireless Keyboard (Included) Wireless LAN Adaptor (Included) User Manual E-Manual...
2. Product specifications 2-3. Accessories 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. Product Code.
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.
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3. Disassembly and Reassemble Description Picture Description Screws Remove screws of rear cover. Torque : 9~ 10Kgf.cm 6003-001782 Disconnect the function assy cable. Torque : 7~ 8Kgf.cm 6003-001188 Remove the screws of Function module & Torque : WiFi. 7~ 8Kgf.cm 6003-001188...
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3. Disassembly and Reassemble Description Picture Description Screws Remove the speakers and cables. Completed disassembly. NOTE Reassembly procedures are in the reverse order of disassembly procedures.
3. Disassembly and Reassemble 3-2. Disassembly(PTC) How to disassembly Description Picture Description Refer Place TV face up on cushioned table. Remove the T-CON Cover First spread the PTC upper...
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3. Disassembly and Reassemble Description Picture Description Refer Spread the both sides of PTC upper (marked "▼") by use the tool. CAUTION Do not scratch on both side by use tool. Gate Cof will be damaged. Apart left and right sides of PTC. Raise up the PTC bottom.
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3. Disassembly and Reassemble Description Picture Description Refer Disassembly is complete. Disassembly is complete.
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3. Disassembly and Reassemble How to reassembly Description Picture Description Refer Cover the PTC bottom. Combine the hook of left and right side.
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3. Disassembly and Reassemble Description Picture Description Refer Check to combine the top and bottom. CAUTION Combine to stick the PTC Rib into the middle mold.
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3. Disassembly and Reassemble Description Picture Description Refer Disassembly is complete.
TV. The Picture Test displays a high definition picture you can examine for flaws or faults. If the test picture does not appear or there is noise or distortion, the TV may have a problem. Contact Samsung’s Call Center for assistance. If the test picture is displayed properly, there may be a problem with an external device.
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4. Troubleshooting The Problem Try this! Store displays are all tuned to digital, HD (high definition) channels. If you have an analog cable/set top box, upgrade to a digital set top box. Use HDMI or Component cables to deliver HD (high definition) picture quality. Many HD channels are upscaled from SD (Standard Definition) content.
If the TV does not play sound during the Sound Test, or the sound is distorted, there may be a problem with the TV. Contact Samsung’s Call Center for assistance. If the TV plays the Sound Test melody without distortion, there may be a problem with an external device.
4. Troubleshooting 4-1-3. There is a problem with the broadcast The Problem Try this! If your TV is not connected to a cable box or satellite box: • Confirm that the coaxial cable is securely connected to the TV. The TV is not receiving all •...
Reset Settings > Reset settings, except for the network settings, default settings. Resets all Smart Hub settings to their factory defaults and deletes all information related to Samsung accounts, linked Resetting Smart MENU > Smart Hub >Smart Hub Reset service accounts, Smart Hub service agreements, and Smart...
4. Troubleshooting 4-1-9. Other Issues The Problem Try this! Watching TV for an extended period of time causes the panel to generate heat. The heat from the panel is dissipated through internal vents running along the top of The TV is hot. the TV.
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". UN**H4203AHXPA Model Name 40" 48" Vendor Panel Code...
4. Troubleshooting 4-3-2. Entering Factory Mode To enter ‘Service Mode’ Press the remote -control keys in this sequence : • If you have Factory remote control INFO Factory If you don’t have Factory remote control, can’t control some menus. T-NT14MUABC-xxxx Option T-NT14MAKUCSS-xxxx Control...
4. Troubleshooting 4-3-3. Factory Data Note • : I should not be possible to adjust or change that does not require a change item Black : Adjustment Services for the corresponding Blue : Items that are secured Option Factory Menu Name Data Range Remark...
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4. Troubleshooting Factory Menu Name Data Range Remark Num of RVU Num of Display Num of IPTV Num of RUI Num of PVR RECORD TOOLS Support LNA Support 24Px4 Support BD Wise Support OFF(H6203 ON) Data Service Support PVR Support CI Support LEDMotionPlus Support Natual Mode Support...
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4. Troubleshooting Factory Menu Name Data Range Remark Contents Bar Cable Modulation Standby led on/off Recognition Support IF AGC D AGC PH BW FQ BW PH RATE PD EN PEQ Inx WF Scale WF Type Num of Network Stream DP V Size Backend Device BT_AUDIO_ON_OFF Config_AV_PATH...
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4. Troubleshooting Factory Menu Name Data Range Remark EDID WRITE HDMI4 … EDID Ver … EDID Port EDID WRITE DVI … Sub Option RS-232 Jack UART Debug/UART Serial Log On/Off ON/OFF Watchdog FRC Monitoring Checksum 0x0000 Fast Boot in Production UART ENABLE ECO IC TYPE MC8121...
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4. Troubleshooting Factory Menu Name Data Range Remark BP PMS Reset F Anet Thread ACM_MC Support MiniBrowser HotkeyList Basic_Smart PDP Option Pixel Shift Test Logic SW Panel Temperature LOGIC Waveform Day Logic Check Sum SAPC Timer APC Speed Hotel Option Hospitality Mode Power On Menu OSD...
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4. Troubleshooting Factory Menu Name Data Range Remark FM M Prescale FM Prescale 0x00h AM Prescale 0x32h NICAM Prescale 0x48h BTSC Mono Prescale BTSC stereo Prescale BTSC SAP Prescale A2Ident High Thid A2Ident Low Thid Pilot Level High Thld 0x0Fh Pilot Level Low Thld 0x08h Carrier2 Amp High Thld...
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4. Troubleshooting Factory Menu Name Data Range Remark Lipsync checkSum Lipsync USB Test Ready Lipsync BT Checksum Debug Factory Menu Name Data Range Remark Spread Spectrum LVDS Spread DDR Spread Period Amplitude HD SSC ON/Off HD SSC Value LVDS SSC ON/OFF LVDS Value DDR SSC ON/OFF DDR SSC Value...
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4. Troubleshooting Factory Menu Name Data Range Remark Tuner Margin MPEG Margin H.264 Margin CAM Wait Time TS Clock delay TCON_TEMP_READ TEMP LAST DCC VERSION 0x3447 DCC CHK SEL DCC CHECK LOCAL DCC CHECK TOTAL MultiACC Checksum IIC Bus Stop Tuner Status Cert Option SHOW...
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4. Troubleshooting Factory Menu Name Data Range Remark MOIP EcoSensor Voltage Chip Test Module Test ATV CH Inspection DTV CH Inspection Satellite CH Inspection Woofer Sound Inspection DP Test DP CRC Result Voltage Result Chip Test Module Test ATV CH Inspection DTV CH Inspection Satellite CH Inspection UHD OSD TEST...
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4. Troubleshooting Factory Menu Name Data Range Remark FRC3D LD UPGRADE Camera Upgade Mic Upgrade CPLD USB Download JP MICOM UPGRADE DP MICOM UPGRADE Jump UPGRADE IR Blaster Upgrade IR Blaster delay time CPLD Download LDC PROFILE UPGRADE Pic Data USB Update Audio Data USB Update Eco Data USB Upate SC ADK Upgrade...
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4. Troubleshooting Factory Menu Name Data Range Remark HDMI 3D DET HOTPLUG OFF HOLD TIME HDMI Stable Count HDCP UPDATE SPI SPI VERSION DVB CI TS Clock delay TC TS Clock delay S CI Control Buf ON TS Clock delay CPU Test Pattern Pattern Sel Logic Pattern Sel...
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4. Troubleshooting ADC/WB Factory Menu Name Data Range Remark AV Calibaration Comp Calibration PC Calibration HDMI Calibration ADC Result 1st_Y_GH 1st_Y_GL 1st_Cb_BH 1st_Cb_BL 1st_Cr_RH 1st_Cr_RL 2nd_R_L 2nd_G_L 2nd_B_L 2nd_R_H 2nd_G_H 2nd_B_H White Balance R-Offset G-Offset B-Offset R-Gain G-Gain B-Gain WB-W2_R_Offset WB_W2_B_Offset WB_W2_R_Gain...
4. Troubleshooting 4-4. White Balance 4-4-1. Calibration Into the Factory Mode. Select ADC/WB menu. Select menu. ADC / WB AV Calibration Comp Calibration HDMI Calibration 4-4-2. Service Adjustment You must perform Calibration in the Lattice Pattern before adjusting the White Balance. Color Calibration ...
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4. Troubleshooting Method of Color Calibration (AV) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port. Press the Source key to switch to “AV1” mode. Enter Service mode. Select the “ADC” menu. Select the “AV Calibration” menu. In “AV Calibration Off”...
4. Troubleshooting 4-4-3. Adjustment Into the Factory Mode. ADC/WB Select menu. White Balance Select menu. (Low light) (High light) Sub Bright Sub Contrast ADC/WB White Balance R offset R gain G offset G gain B offset B gain 4-25...
4-5. Software Upgrade Samsung may offer upgrades for the TV’s firmware in the future. These upgrades can be performed via the TV when it is connected to the Internet, or by downloading the new firmware from samsung.com to a USB memory device.
5. Wiring Diagram 5-3. Connector Functions Connector Function Supply main power and dimming signal from SMPS to Main Board. CN201 CNM803 The LVDS signal transfered from Main Board to Panel. CN401 CON3...