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LCD-TV Chassis : N59A Model : LE32A676A LE37A676A LE40A676A LE46A676A LE52A676A 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 LE32A676A/LE37A676A/ LE40A676A/LE46A676A/LE52A676A 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 LE32A676A Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Contrast Ratio : 8000:1 � Response time : 6ms � 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 LE37A676A Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Contrast Ratio : 8000:1 � Response time : 6ms � 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 LE40A676A Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Contrast Ratio : 8000:1 � Response time : 6ms � 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 LE46A676A Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Contrast Ratio : 8000:1 � Response time : 6ms � 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 LE52A676A Feature Digital-TV,RF,3-HDMI, 2Ext, 1Component,1-A/V,1-S-video,USB2.0(Wiselink), D-sub � Brightness : 500cd/m � Contrast Ratio : 8000:1 � Response time : 6ms � 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 Amber Peony Model (LE32A676A/LE37A676A/LE40A676A (LE40F86BD/LE46F86BD) /LE46A676A/LE52A676A) Design Display Type LCD TV LCD TV Built-in Tuner Resolution 1920 x 1080 1920 x 1080 LCD Panel TFT LCD Panel 100Hz (only 32” 50Hz)
3. Disassembly and Reassemble 3. Disassembly and Reassemble This section of the service manual describes the disassembly and reassembly procedures for the LE40A676A 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. 3. Lift up the rear-cover. * Fan is used in 40” only...
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3. Disassembly and Reassemble Description Picture Description Screws 4. Remove the screws of IP and main board. * 32” model hasn’t shield case. 5. Remove the speakers and screws of inlet socket.
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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”)
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3. Disassembly and Reassemble Description Picture Description Screws 8-1. Remove the screws of bracket. (32”) 8-2. Remove the screws of bracket. (40”) 8-3. Remove the screws of bracket. (46”, 52”) * Caution: Don’t place excessive pressure 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 Calibration CHECKSUM Advanced Font Data Viewer T-AMBDFRC-xxxx (Application S/W Ver.) T-AMBDEUM xxxx (Scaler S/W Ver.) T-AMBDEUS-xxxx (Sub micom Ver.) Not Display xxxx xxxx xxxx xxxx xxxx xxxx xx Year-Month-Day EDID : Success/Failure DTP-LM-xxxx Date of Purchase : Month/Day/Year 4-18...
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4. Troubleshooting 1. Option Item Range Factory Reset Wb Reset Panel Inch 26”, 32”, 37”, 40”, 46”, 52”, 42”, 50”, 58”, 63” Dimm Type EXT, INT, INT_NEG, EXT_POS, EXT_NEG 40AMSC100F,46AMSC100F,52AMSC100F,32AMAG50F,32AUAG50F,37AUAG50F,40AMAG50F, 40AUAG50F,40CMAG50F,46AMAG50F,46AUAG50F,46CMAG50F,52AMAG50F,52CMAG50F,26A Panel Type MAG50,26AUAG50,26CMNG50,32AUAG50,32AUNG50,32CMNG50,32CMAG50,37AUAG50,37C PAG50,40AUAG50,40AMAG50,32AMAG50,32AM8AG50,32AMSC50F,37AUSC50F,37AUSC100F Language 0~10 D-Gamma OFF/0.85/0.88/0.90/0.93/0.95/0.98 Anynet+ ON/OFF Light Effect ON/OFF...
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4. Troubleshooting 2. Calbration Item Range AV Calibration Init / Success / Failure DTV Calibration Init / Success / Failure PC Calibration Init / Success / Failure HDMI Calibration Init / Success / Failure 3. WB Item Range Data Sub Brightness 0~255 R Offset 0~255...
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4. Troubleshooting 5. Advanced 1) FRCM Item Range Data FW Version 0~255 EEPROM State 0~255 SS On/Off ON/OFF SS Width [%] 0~30 SS Freq [KHz] 0~70 PATT_Before DDR PATT_After DDR FMD_DEMO ON/OFF Video_Judder_Low 0~32 Video_Judder_Med 0~32 Video_Judder_High 0~32 Film Low SD 22 0~32 Film Low SD 32 0~32...
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4. Troubleshooting 4) 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 Frames Num of Check 1~60 Num of Double Chk 5~50...
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4. Troubleshooting 5) Picture Enhance Item Range Data Low Gain 0~255 Middle Gain 0~255 High Gain 0~255 Local Low 0~255 Local Middlde 0~255 Local High 0~255 Gain1 0~255 Gain2 0~255 Gain3 0~255 Gain4 0~255 Gain5 0~255 Gain6 0~255 Gain7 0~255 Gain8 0~255 Limit Pos All...
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4. Troubleshooting 7) Calibration Target Item Range Data AV Offset 0~255 AV Delta 0~255 AV Gain 0~255 Y Offset 0~255 Y Delta 0~255 Y Gain 0~255 PC Offset 0~255 PC Delta 0~255 PC Gain 0~255 2nd_Offset 0~255 2nd_Delta 0~255 2nd_Gain 0~255 8) Calibration Adjust Item...
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4. Troubleshooting 9) Movie WB Item Range Data Movie On/Off ON/OFF Picture Mode Movie,Dynamic,Standard Movie Color Tone NORMAL,WARM1,WARM2,COOL2,COOL1 COOL1 Msub Contr 0~255 Msub Brigh 0~255 Cool2_R_GAIN 0~255 Cool2_B_GAIN 0~255 Cool2_R_OFFSET 0~255 Cool2_B_OFFSET 0~255 Normal_R_GAIN 0~255 Normal_B_GAIN 0~255 Normal_R_OFFSET 0~255 Normal_B_OFFSET 0~255 Warm1_R_GAIN 0~255...
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4. Troubleshooting 11) FBE Item Range Data Patt Sel B Slope Gain 0~255 B Tilt Min 0~255 B Tilt Max 0~255 L func Basis 0~255 H func Basis 0~255 Mean Offset1 0~255 Mean Offset2 0~255 Mean Slope 0~255 ACR Offset 0~255 ACR Th1 0~255...
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4. Troubleshooting 14) Hotel Option Item Range Data Hotel Mode ON/OFF Power On Channel 0~99 Power On Volumel 0~100 Max Volume 0~100 Local Key Lock ATV,Ext.1,Ext.2,AV,S-Video,Component, Power On Source PC,HDMI1,HDMI2,HDMI3,HDMI4 15) EDID Control Item Range Data EDID On/Off ON/OFF EDID Type 13_1920_1080 EDID Write Success/Failure...
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. Insert USB drive. Menu -> Setup -> SW Update then press the ENTER button. The message “Scanning for USB. It may take up to 30 seconds.” Please be careful to not disconnect the power or remove the USB drive while upgrade is being applied. The message “Upgrade version XXXX to version XXXX ? The system would be reset after upgrade.”...
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 CN6002_41P IP, SMPS <-> CN6001_LCD Supply dimming power from IP,SMPS to Main Board. * defective symptom : No pcture, repeat power On/Off IP, SMPS <->...