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LCD-TV Chassis : GPR32SEN GPR37SEN GPR40SEN GPR46SEN GPR52SEN Model : LE32A55*P LE37A55*P LE40A55*P LE46A55*P LE52A55*P SERVICE Manual TFT-LCD TV Contents 1. Precautions 2. Product specifi cations 3. Disassembly and Reassembly 4. Troubleshooting 5. Exploded View & Part List 6. Wiring Diagram LE32A55*P /LE37A55*P/ LE40A55*P/ LE46A55*P/ LE52A55*P Refer to the service manual in the GSPN (see the rear cover) for the more information.
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.
2. Product specifications 2. Product specifications 2-1. Feature & Specifications Model LE32A55*P Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Dynamic Contrast Ratio : 15,000:1 � Response time : 8ms � Dynamic contrast, Super-PVA � PIP(in HDMI1,2,3,Component1,PC mode and Sub picture is available TV, Ext1/2, AV) �...
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2. Product specifications Model LE37A55*P Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Dynamic Contrast Ratio : 15,000:1 � Response time : 6.5ms � Dynamic contrast, AMVA � PIP(in HDMI1,2,3,Component1,PC mode and Sub picture is available TV, Ext1/2, AV) �...
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2. Product specifications Model LE40A55*P Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Dynamic Contrast Ratio : 30,000:1 � Response time : 6.5ms � Dynamic contrast, AUO : AMVA, CMO : SMVA � PIP(in HDMI1,2,3,Component1,PC mode and Sub picture is available TV, Ext1/2, AV) �...
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2. Product specifications Model LE46A55*P Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Dynamic Contrast Ratio : 30,000:1 � Response time : 6.5ms � Dynamic contrast, AUO : AMVA, CMO : SMVA � PIP(in HDMI1,2,3,Component1,PC mode and Sub picture is available TV, Ext1/2, AV) �...
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2. Product specifications Model LE52A55*P Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Dynamic Contrast Ratio : 30,000:1 � Response time : 8ms � Dynamic contrast, Super-PVA � PIP(in HDMI1,2,3,Component1,PC mode and Sub picture is available TV, Ext1/2, AV) �...
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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 2-2. Movie Plus: MJC(Motion Judder Cancellation) Technology Example • Motion Judder cancellation for HD film image. • Adaptive Recursive Search (ARS) - Implementation IPC/MJC at same time <Motion Judder> - Search Range Horizontal : ± 72 Pixel, Vertical : ±...
2. Product specifications 2-3. Spec Comparison to the Old Models Pearl Model Tulip(LE40M86BD) (LE40A55*P) Design Display Type LCD TV LCD TV Built-in Tuner Resolution 1920 x 1080 1920 x 1080 LCD Panel TFT LCD Panel 50Hz TFT LCD Panel 50Hz Screen Size 32”...
3. Disassembly and Reassemble 3. Disassembly and Reassemble This section of the service manual describes the disassembly and reassembly procedures for theL LE32A55*P 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. Remove the screws of rear-cover. only 46”, 52” 3. Lift up the rear-cover.
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3. Disassembly and Reassemble Description Picture Description Screws 4. SMPS and Main board. 5. Remove the screws of Left/Right, Bottom Left/Bottom Right and center woofer speaker.
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3. Disassembly and Reassemble Description Picture Description Screws 6. Remove the screws of Stand BKLT. Lift up the Stand BKLT. 7. Remove the Side AV Ass’y (only 46”) 8. Remove the Bracket of Boards * Caution: Don’t force yourself on wall mount bracket during disassembly.
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3. Disassembly and Reassemble Description Picture Description Screws 9. Remove the screws on Panel. Reassembly procedures are in the reverse order of disassembly procedures. ※...
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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4. Troubleshooting 4-1-2. No Video (Analog PC signal) Symptom Audio is normal but no picture is displayed on the screen. Check the PC source Major Check the SEMT01(MT8226) 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 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 SEMT01(MT8226) 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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4. Troubleshooting 4-1-4. No Video (Tuner_CVBS) Symptom Audio is normal but no picture is displayed on the screen. Check the Tuner CVBS source Major Check the SEMT01(MT8226) 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 4-1-5. No Picture (Video_CVBS) Symptom Audio is normal but no picture is displayed on the screen. Check the Video Source Major Check the SEMT01(MT8226) 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 CVBS Output Signal 4-10...
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4. Troubleshooting 4-1-6. No Picture (S-VIDEO_Y,C) Symptom Audio is normal but no picture is displayed on the screen. Check the S-Video_Y,C source Major Check the SEMT01(MT8226) 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 Analog Signal(Y,C) 4-12...
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4. Troubleshooting 4-1-7. No Sound Symptom Audio is normal but no picture is displayed on the screen. Check the RF Source Major Check the SEMT01(MT8226) 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 IC2102 The Signal are Inputed to IC2104 4-14...
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4. Troubleshooting 4-1-8. Defect Analysis ahead of models. Defective image Defective Symptoms No Picture and normal sound in case of defective a local dimming board or a defective connector Another kind of defect LVDS Connector 4-15...
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-PRLPEUMD-**** (Main Micom Ver.) T-PERLDEUC-**** (DTV SW Ver.) T-PRLPEUS-**** (Sub Micom Ver.) Month/Day/Year Hour/Min./Sec. Advanced Menu 4-18...
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4. Troubleshooting 4) Movie WB Item Range Component HDMI W/B MOVIE ON/OFF Mode Dynamic, Movie Color Tone Cool1, Warm2 Msub Contrast 0~255 Msub Brightness 0~255 Cool2 R Gain 0~255 Cool2 B Gain 0~255 Cool2 R Offset 0~255 Cool2 B Offs 0~255 Normal R Gain 0~255...
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4. Troubleshooting 4. Advanced Menu 1) MTK8226 Cal. Adjustment Item Range Data R-Offset 0~255 G-Offset 0~255 B-Offset 0~255 R-Gain 0~255 G-Gain 0~255 B-Gain 0~255 Y_Offset 0~255 Cb_Offset 0~255 Cr_Offset 0~255 Y_Gain 0~255 Cb_Gain 0~255 Cr_Gain 0~255 CVBS Offset 0~255 CVBS Gain 0~255 Red Offset 0~255...
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4. Troubleshooting Scart RGB Item Range Data R-Offset 0~255 G-Offset 0~255 B-Offset 0~255 R-Gain 0~255 G-Gain 0~255 B-Gain 0~255 TVD/Comb Item Range Data Manual AGC On/Off MIN_HWIDTH 0~15 MAX_HWIDTH 0~63 TH_HIGH 0~255 TH_SUPER 0~255 Colour system Noise level IPC/MJC Item Range Data IPC_Film...
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4. Troubleshooting Picture Enhance COMP COMP Item Range RF NTSC SVHS SECAM (480i/576i) (480p/576p) Low gain 0~255 Middle gain 0~255 High gain 0~255 Local low 0~255 Local middle 0~255 Local high 0~255 Gain1 0~255 Gain2 0~255 Gain3 0~255 Gain4 0~255 Gain5 0~255 Gain6...
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4. Troubleshooting 2) Option Block FBE3 CVBS SCART COMP SD Item Range RF PAL NTSC SECAM (EXT2,SVHS,AV) (RGB) (480/576) Patt-Sel B-Slope gain 0~255 B-Tilt min 0~255 B-Tilt max 0~255 Lfunc-Basis 0~255 Hfunc-Basis 0~255 Mean-Offset1 0~255 Mean-Offset2 0~255 Mean-Slope 0~255 ACR-Offset 0~127 ACR-Th1 0~255...
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4. Troubleshooting FRCM Item Range Data FW Version 0128 EEPROM State Failure Spread Spectrum On/Off SS Width 0~30 SS Freq 0~70 TP Before DDR TP After DDR FMD DEMO On/Off Video L Jud 0~32 Video M Jud 0~32 Video H Jud 0~32 SD FilmL22Jud 0~32...
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4. Troubleshooting 3) Sound Item Range Data AM Mute Th_High 0~20 AM Mute Th_Low 0~20 FM Mute Th_High 0~96 FM Mute Th_Low 0~96 Correct Threshold Sync Loop 1~1000 Error Threshold 2~40 Parity Error Thrd 1~128 Every Num Frame Num of Check 1~60 Num of Double Check 5~60...
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4. Troubleshooting 5) Adjust User Control Init Item Range Data TTX PWM 0~255 Dyn. Contrast 0~255 Dyn. Brightness 0~255 Dyn. Color 0~255 Dyn. Sharpness 0~255 Std. Contrast 0~255 Std. Brightness 0~255 Std. Color 0~255 Std. Sharpness 0~255 Melody Volume 0~55 Brightness Center 0~55 Contrast Gain...
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4. Troubleshooting 6) Bus Stop Item Range Data Main Loop On/Off Eeprom On/Off Tuner On/Off Normal On/Off A-Watch Dog On/Off 7) Defect Log 4-30...
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).
4-6. Servicing Information 4-6-1 USB Download Method Samsung may offer upgrades for TV’s firmware in the future. Please contact the Samsung call center at 1-800-SAMSUNG (7267864) to receive information about downloading upgrades and using a USB drive. Upgrades will be possible by connecting a USB drive to the USB port located on located on the back of your TV.
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4. Troubleshooting 2. To enter factory mode. Option Table -> Control -> USB then press the ENTER button. The message USB Searching… It may take up to 30 seconds is displayed. Please be careful to not disconnect the power or remove the USB drive while upgrade is being applied.
4. Troubleshooting 4-7. EDID Self-Write Method 1. OSD in case of entering Factory : It’s displayed to check if Self write runs normally. L13_1366_768 SUCCESS Success : Self write all port success PANEL highest resolution Failure : Even Self write one port failure HDMI Version 13 : HDMI 1.3 In case Failure occurs!
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4. Troubleshooting EDID Protect : Off Off-> Self write possible : In order for ddc data to be written, set each EEPROM Write Protection Pin as Low. On -> Self write impossible : In order for ddc data not to be written, set each EEPROM Write Protection Pin as High. EDID Type : ------ HDMI Version &...
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4. Troubleshooting 5. In case Self write is done with Manual due to service request (it changes HDMI 1.3 Version into HDMI 1.2 Version ; L550 , P550 and more) Under the condition that Panel Inch & Model Option are set, in case of retouching manually ! ex) Pearl ( model using HDMI 3) Before Retuch) Factory entering OSD picture -->...
6. Wiring Diagram 6-3. Connector Functions Connector Functions Panel <-> CN6105_51P The LVDS signal transfered Panel to Main Board. * defective symptom : No pcture but normal sound CN6103_41P IP, SMPS <-> CN6104 Supply dimming power from IP,SMPS to Main Board. * defective symptom : No pcture, repeat power On/Off IP, SMPS <->...
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7. Schematic Diagram The Block Processing Video Signal Component, PC and CVBS signal like AV are inputted to Scaler-IC (MT8226(IC5105)) directly. HDMI signal is inputted to switch-IC, TMDS351 to select just 1-HDMI input in 3-HDMI input. (But HDMI3 (Side) inputted to Scaler-IC directly), And then Selcted HDMI signal is inputted to Scaler-IC. Scaler-IC converts video signal to 12bit of LVDS Signal, standard format to run a LCD panel.
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7. Schematic Diagram 7-3. Schematic Diagrams 7-3-1. MAIN POWER BLOCK...