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LCD-TV Chassis : GCR32SE* Model : LE32A457C1D SERVICE Manual TFT-LCD TV Contents 1. Precautions 2. Product specifications 3. Disassembly and Reassembly 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram 7. Schematic Diagram LE32A457C1D Refer to the service manual in the GSPN (see the rear cover) for the more information.
3. Disassembly and Reassemble 3. Disassembly and Reassemble This section of the service manual describes the disassembly and reassembly procedures for the LE26A457C1D LCD TV. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1. Disassembly Cautions: 1.
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3. Disassembly and Reassemble Description Picture Description Screws 2. Lift up rear cover and remove the stand. 3. Remove Screw from the stand BRKT and lift up the stand BRKT.
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3. Disassembly and Reassemble Description Picture Description Screws 4. Disonnect cable from the boards. 5. Remove the screws of Scaler board’s shield case and boards. x 12...
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3. Disassembly and Reassemble Description Picture Description Screws 6. Remove screws and Lift up the Lod pa Reassembly procedures are in the reverse order of disassembly procedures. ※...
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 1-2. 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 conflict between the following servicing precautions and any of the safety precautions, always follow the safety precautions.
1. Precautions 1-4. Installation Precautions For safety reasons, more than two 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.
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2. Product specifications Model LE32A45*C** Feature Digital TV(LE32A457C**), RF, 3-HDMI, 1-Component, 1-AV, 1-S-Video, D-SUB � Brightness : BN07-00511A(AUO)=450cd/m , BN07-00521A/538A(AMLCD)=500cd/m � Contrast Ratio : BN07-00511A(AUO)=2000:1, BN07-00521A/538A(AMLCD)=3000:1 � Response time : BN07-00511A(AUO)=6.5ms, BN07-00521A/538A(AMLCD)=8ms � Dynamic contrast � Specifications Item Description LCD Panel TFT-LCD panel, RGB vertical stripe, normaly black, 32-Inch viewable, 0.51075(H) x 0.51075(W) x 3 mm pixel pitch Scanning Frequency...
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2. Product specifications Model LE37A45*C** Feature Digital TV(LE37A457C**), RF, 3-HDMI, 1-Component, 1-AV, 1-S-Video, D-SUB � Brightness : 450cd/m � Contrast Ratio : 2500:1 � Response time : 8ms � Dynamic contrast � Specifications Item Description LCD Panel TFT-LCD panel, RGB vertical stripe, normaly black, 37-Inch viewable, 0.6(H) x 0.6(W) x 3 mm pixel pitch Scanning Frequency Horizontal : 30 kHz ~ 80 kHz (Automatic)
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2. Product specifications Model LE40A45*C** Feature Digital TV(LE40A457C**), RF, 3-HDMI, 1-Component, 1-AV, 1-S-Video, D-SUB � Brightness : 450cd/m � Contrast Ratio : BN07-00515A(AUO)=2000:1, BN07-00523A(AMLCD)=3000:1 � Response time : 8ms � Dynamic contrast � Specifications Item Description LCD Panel TFT-LCD panel, RGB vertical stripe, normaly black, 40-Inch viewable, 0.648(H) x 0.648(W) x 3 mm pixel pitch Scanning Frequency Horizontal : 30 kHz ~ 80 kHz (Automatic)
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2. Product specifications CHANNEL FREQUENCY TABLE OUTPUT FREQUENCY : ANALOG fv:45.75MHz, fs:41.25MHz DIGITAL Fc:44MHz TUNING STEP SIZE : FIRST PLL 250KHz SECOND PLL 62.5KHz OSD CH NO CH NO CH NO CH NO Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC 72.
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2. Product specifications OSD CH NO CH NO CH NO CH NO Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC 499.25 ULTRA 498.00 499.25 505.25 ULTRA 504.00 505.25 511.25 ULTRA 510.00 511.25 517.25 ULTRA 516.00 517.25 523.25 ULTRA 522.00 523.25 529.25...
2. Product specifications 2-3. Spec Comparison to the Old Models Model CORAL (LE26/32/37/40A457C1D) JASMINE(LE26/32/37/40S86BD) Design Display Type LCD TV LCD TV Built-in Tuner Resolution 1366 x 768 1366 x 768 LCD Panel TFT LCD Panel 50Hz TFT LCD Panel 50Hz Screen Size 26”/32”/37”/40”...
4. Troubleshooting 4. Troubleshooting 4-1. Troubleshooting 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. Check the power input to the Main Board.
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4. Troubleshooting 4-1-1. No Power The LEDs on the front panel do not work when connecting the power cord. The SMPS relay does not work when connecting the power cord. Symptom The units appears to be dead. The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are improperly connected or the Main Board or SMPS is not functioning.
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Does the digital data appear at the Check a IC5001. output of LVDS (RA5012~13)? Change a main PCB ass’y Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace a lcd panel? Caution Make sure to disconnect the power before working on the SMPS/IP.
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4. Troubleshooting 4-1-3. No Video (HDMI - Digital Signal) Symptom Audio is normal but no picture is displayed on the screen. Check the HDMI source Major Check the SEMS01 checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Power Indicator is off.
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4. Troubleshooting WAVEFORMS Digital Output Data Signal of HDMI(Data)
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PCB ass’y. Does the signal appear at R3169 Change a main PCB ass’y. of IC2601? Check the LVDS cable? Please, Call to Samsung Co. LTD. Replace the LCD panel? Caution Make sure to disconnect the power before working on the SMPS/IP.
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Operating a video player. Does the Y/C signal appear at Check a connection harness. R3299, R3219? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replacea lcd panel? Caution Make sure to disconnect the power before working on the SMPS/IP.
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4. Troubleshooting WAVEFORMS Digital Output Data Analog Signal(Y,C) 4-10...
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4. Troubleshooting 4-1-6. No Sound Symptom Audio is normal but no picture is displayed on the screen. Check the RF Source Major Check the SEMS01 checkpoints This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected. Connect a sound cable.
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4. Troubleshooting WAVEFORMS The Signal are Inputed to IC2002 The Signal are Inputed to IC2001 4-12...
4. Troubleshooting 4-2. Alignments and Adjustments 4-2-1. General Alignment Instuction Usually, a color LCD-TV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync. Use the specified test equipment or its equivalent. Correct impedance matching is essential.
4. Troubleshooting 4-3. Factory Mode Adjustments 4-3-1 Entering Factory Mode To enter ‘Service Mode’ Press the remote -control keys in this sequence : - If you do not have Factory remote - control INFO MENU MUTE Power on - If you have Factory remote - control PICTURE ON DISPLAY FACTORY...
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4. Troubleshooting 4-3-3 Factory Data Option Table(Service) WB Adjust Information Checksum T-CRL32PEUMD-XXXX (Main Micom Ver.) T-PNRPEUS-xxxx (Sub Micom Ver) Month / Day / Year / Hour / Min. / Sec. Advanced Menu Option Table(Service) Factory Reset Default Ready Off/On Panel Inch 26”/32”/37”/40”...
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4. Troubleshooting 2. WB Adjust Calibration White Balance EPA Standard Movie WB 3. Information Checksum T-CRL32PEUMD-XXXX (Main Micom Ver.) T-PNRPEUS-xxxx (Sub Micom Ver) Month / Day / Year / Hour / Min. / Sec. 4. Advanced Menu I. MST68981 1) ADC Calibration ADC Calibration CVBS Y Offs CVBS Y Gain...
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4. Troubleshooting 2) Calibration Target AV ADC Target High Delta Comp ADC Target High Delta PC ADC Target High Delta ALL RGB Target High Delta 3) IPC/MJC 4) Picture Enhance Sharpness H1 Gain H2 Gain H3 Gain H4 Gain V1 Gain V2 Gain D1 Gain D2 Gain...
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4. Troubleshooting II. Option Block 1) FBE Pattern Select B-Slope Gain B-Tilt Min B-Tilt Max Lfunc-Basis Hfunc-Basis Mean-Offset1 Mean-Offset2 Mean Slope ACR Offset ACR Th1 ACR Th2 Skin Enable Skin Uv Mskin Uv Sub Color Msub Color 2) FRCS 3) FRCM 4) LD 5) PDP LOGIC 4-18...
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4. Troubleshooting III. Sound Saturation Mute FM Prescale AM Prescale Nicam Prescale FM M Prescale SC1 Vol SC2 Vol Audio Delay Audio Delay Time Ch1BW Ch2BW Num of Check Num of Double Check Mono Weight Stereo Weight Dual Weight BG M2S Threshold DK M2S Threshold BG S2M Threshold DK S2M Threshold...
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4. Troubleshooting IV. YC Delay PAL BG PAL DK PAL I SECAM BG SECAM DK SECAM L NTSC 358 NTSC 443 AV PAL AV SECAM AV NT358 AV NT443 AV PAL60 V. Adjust Video Mute time Dynamic Dimming Dynamic CE LNA Plus Megazine LNA DTV WatchDog...
4. Troubleshooting 4-4. White Balance - Calibration 4-4-1 White Balance -Calibration 1. Calibration AV Calibration Comp Calibration PC 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) 1) Apply the NTSC Lattice (N0. 3) pattern signal to the AV IN 1 port 2) Press the Source key to switch to “AV1” mode 3) Enter Service mode 4) Select the “Calibration” menu 5) Select the “AV Calibration”...
4. Troubleshooting 4-4-3 White Balance - Adjustment (low light) (hight light) Sub Bright Sub Contrast 3. W/B R offset R gain G offset G gain B offset B gain (W/B adjustment Condition refer next page) 4-5. White Ratio (Balance) Adjustment You can adjust the white ratio in factory mode (1:Calibration, 3:White-Balance).
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4. Troubleshooting Order Description ETC. Open the Flash Downloader. Before clicking the Click “Connect” icon, TV shoud be turned on. Click “Program” 4-25...
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Order Description ETC. Connect PC and TV Set with Serial cable. TV should be turned on. Open the Samsung Set-top Box upgrade Wizard. 1) Choose the DTV S/W by clicking “Browse” 2) After choosing the S/W, click the “Next” icon.
4. Troubleshooting 4-6-3 After S/W Upgrade How to Access Service Mode Entering Factory Mode <Power OFF> → <INFO> → <MENU> → <MUTE> → <Power ON> Factory Data Option Table(Service) WB Adjust Information Advanced Menu If you want to enter here, press “0000”. How to Initialize.
6. Wiring Diagram 6-3. Connector Functions Connector Functions CN1001 <-> CNM802 Supply main power from SMPS to Main Board. * defective symptom : No Power CN6003_LCD <-> CNM801 Supply dimming power from SMPS to Main Board. * defective symptom : No picture CN2101 <->...
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