Samsung is the registered trademark of Samsung Electronics Co., Ltd. All rights reserved. LN26T71B / LN32T71B / LN40T71B and Macmaster This manual may not, in whole or in part, be copied, Cable Adapter are trademarks of Samsung Electronics photocopied, reproduced, translated, or converted to any Co., Ltd.
1 Precautions 1 Precautions Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as electrical shock. 1-1 Safety Precautions 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 1. For safety reasons, more than two people are 6. Keep the antenna far away from any high-voltage required for carrying the product. cables and install it firmly. Contact with the high- voltage cable or the antenna falling over may 2.
2 Product Specifications 2 Product specifications 2-1 Fashion Feature Excellent Picture Quality -DNIe technology provides life-like clear images. Dynamic Contrast -Automatically detects the input visual signal and adjusts to create optimum contrast. Energy saving -Adjusts the brightness of TV so as to reduce the power consumption. SRS TruSurround XT -SRS TruSurround XT provides a virtual Dolby surround system.
3 Alignments and Adjustments 3 Alignments and Adjustments 3-1 Service Instruction 1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync. 2. Use the specified test equipment or its equivalent. 3.
3 Alignments and Adjustments 3-2 How to Access Service Mode 3-2-1 Entering Factory Mode " " - If you have Factory remote - control - The buttons are active in the service mode. 1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left Arrow Right, Menu, Enter, Number Key(0~9) 2.
2. Option Table XXXX XXXX inch Option Carrier Mute Shop Mode Gamma Auto FM Debug Panel option AUO_AMVA High Dev. Dynamic Contrast 2HDMI V-Chip Brt,Sensor Dynamic CE EnergySave Dynamic Dimming LBE/FBE Color System Manual FRC(Micronas) Auto Power FRC(Samsung) Magazine LNA V-Chip Area...
Inch Option 26" 32" 40" Gamma AMLCD Panel Option AUO_AMVA AMLCD_INT 2Hdmi Brt. Sensor EnergySave LBE/FBE FRC(Micronas) FRC(Samsung) Carrier Mute Auto FM High Deviation Dynamic CE Dynamic Dimming Color System Manual Manual Manual Auto Power Magazine LNA V-Chip Area Shop Mode...
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3 Alignments and Adjustments low high delta Calibration Target AV ADC 17H D5H COMP ADC 0FH EBH PC ADC 17H D5H ALL RGB 00H DDH Color Management Skin Direction Reddish Skin Enhane 5. Option block 6. STV8258/STA323W Ch1 Volume Ch2 Volume Stereo Pilot H Stereo Pilot L Sap Pilot H...
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3 Alignments and Adjustments 8. Adjust Video Mute Time Vol Curve Large Melody Volume Ana_Dimm_Max LNA PLUS RFDB-1 Level RFDB-2 Level RFDB-3 Level RFDB-4 Level Hotel Option Hotel Mode Power On Channel 1 Power On Volume Max Volume Local Key Lock Power On Source 9.
3 Alignments and Adjustments 3-4 Service Adjustment 3-4-1 White Balance - Calibration If picture color is wrong, do calibration first. Equipment : CA210, Patten : chess pattern Execute calibration in Factory Mode Source AV : PAL composite, Component : 1280*720/60Hz PC : 1024*768/60Hz ( chess patten ) 3-4-2 White Balance - Adjustment...
3 Alignments and Adjustments 3-5 Software Upgrade 3-5-1 How to Update Flash ROM 1. Installthe Flash Downloader ConnectSet(Service Jack)and Jig Cable to execute Program Update. 2. Flash Downloader program update -Before Turning on the set,Click "connect"which is under of OSD Screen! -Turn on the Set.
4 Troubleshooting 4 Troubleshooting 4-1 First Checklist for Troubleshooting 1. 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 cable connection or a connection is too loose. - Check to see if the cables are connected according to the connection diagram.
4 Troubleshooting 4-2 Checkpoints by Error Mode 4-2-1 No Power LAMP off, power indicator Check a connection a power cable. LED red color? Does proper DC 12V Change a Assy PCB Power. appear at CN800? Does proper DC A3.3V, Check a IC809, IC802. A5V appear at Change a main PCB ass'y.
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#30, 22, 38(R, G, B) of IC500? cable. Change a main PCB ass'y. Does the digital data appear Check a IC500 at the output of Change a main PCB ass'y. LVDS (R563_OP~R572_OP)? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace a lcd panel?
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4 Troubleshooting WAVEFORMS R,G,B Output Signal of IC500...
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Check a a IC 500 R503~R510? Change a main PCB ass'y. Does the digital data Check a IC500 appear at output of IC500 Change a main PCB ass'y. LVDS(R563_OP~R572_OP)? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace lcd panel?
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4 Troubleshooting Digital Output Data of IC500 Signal of HDMI(Data)
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Does the signal appear at Change a main PCB ass'y. #8 of IC500? Does the digital data appear Check a IC500. at output of Change a main PCB ass'y. R563_OP~R572_OP? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replacea lcd panel?
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Dose the signal appear at Check a connection harness. #10 of IC500? Does the signal appear at Check a IC515. Out of IC500 Change a main PCB ass'y R563_OP~R572_OP? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace lcd panel?
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4 Troubleshooting WAVEFORMS CVBS Output Signal 4-10...
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Check a connection harness. #21, #31 of IC500? Does the digital data appear Check a IC500. at Output of IC500, Change a main PCB ass'y. R563_OP~R572_OP? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replacea lcd panel? 4-11...
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4 Troubleshooting WAVEFORMS Digital Output Data of IC500 Analog Signal(Y,C) to IC500 4-12...
4 Troubleshooting 4-2-7 No Sound Connect a sound cable. Picture is display, no sound. control a volume. Does the signal appear at Pin #10, #16(CH1_L, R Sound) Check a connection harness and and Pin #3, #9 headphone jack / Side AV. (CH2_L, R Sound) of IC603? Check the DC 12V...
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4 Troubleshooting WAVEFORMS The Signal are Inputed to IC603 DC +12V 4-14...
5 Exploded View & Parts List 5 Exploded View and Parts List - You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 5-1 LN26T71B Exploded View M0014 T0447 M0215 M0013 T0076 T0003 T0175 M0013 T0175...
6 Electrical Parts List 6 Electrical Parts List You can search for updated part codes through ITSELF web site. URL : http://itself.sec.samsung.co.kr/ 6-1 LN26T71B Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LN26T71BX/XAO LN26T71B,A51O/26T70-GSM,26,LCD-TV,COLOMB M0001 BN90-00859B ASSY COVER FRONT;26T71,UO(XAX),-,HIPS,HB...
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8 Wiring Diagrams CN221 - Front control NAME SDA-T SCL-T GND GND IDENT HP-L HP-R INPUT1 INPUT1 INPUT2 Function Define - A5V Front control board poewr supply - KEY INPUT1,2/SDA/SCL Key control, from the memu, change up/down Etc. - IR Remote control signal - LED Control the timing and stand by LED color...
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8 Wiring Diagrams CN801 - AC Input NAME Live Netural VOLTAGE Functing Define - Refer to : AC Input CN801 - Main Board power supply NAME 13V GND 5.4V 5.4V 5.4V GND GND GND GND ST7V PWR Functing Define - ST7V Stand-By Output - PWR Power On/Off Control - Refer to : CN801 function define CNM804 - Panel control...
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8 Wiring Diagrams CN802 - Inverter power supply NAME 24V GND GND GND GND Functing Define - AMLCD Panel Inverter Power - 24V LAMP INVERTER Voltage - B/L Brightness sensor power - A_D ANA_DIMMING - P_D PWM_DIMMING CN803 - Inverter power supply NAME 24V GND GND GND GND...
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8 Wiring Diagrams CN801 - AC Input NAME Live Netural VOLTAGE Functing Define - Refer to : AC Input CN801 - Main Board power supply NAME 13V GND 5.4V 5.4V 5.4V GND GND GND GND ST7V PWR Functing Define - ST7V Stand-By Output - PWR Power On/Off Control - Refer to : CN801 function define CNM804 - Panel control...
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8 Wiring Diagrams CN803 - Inverter power supply NAME 24V GND GND GND GND Functing Define - AMLCD Panel Inverter Power - 24V LAMP INVERTER Voltage - B/L Brightness sensor power - A_D ANA_DIMMING - P_D PWM_DIMMING CN804 - Inverter power supply NAME 24V GND GND GND GND...
9 Schematic Diagrams 9 Schematic Diagrams -This Document can not be used without Samsung's authorization. 9-1 Power_Sound Schematic Diagram PO W ER B12V B12VS B5V_VCCT SOUND TP800 IC800 IC813 L101 C805 C800 TP949 MC33269DTRK-5.0 TP950 BA178M08FP 3.9uH 100nF 10nF < TORINO SMPS >...
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10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Front - The product color and shape may vary depending on the model. 1. SOURCE 5. SPEAKERS Toggles between all the available input sources (TV, AV1, AV2, S-Video1, S-Video2, Component, PC, 6.
10 Operating Instructions and Installation 10-2 Connection Panel LN-S2641D LN-S3241D / LN-S4041D 1. AV IN 1 HEADPHONE (LN-S2641D) Video and audio inputs for external devices, such as Connect a set of external headphones for private lis a camcorder or VCR. tening.
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10 Operating Instructions and Installation 10-2-1 Side Panel Jacks(LN32T71B / LN40T71B) - Use the left side panel jacks to connect a component that is used only occasionally, such as a camcorder or video game. 1. AV IN 2 Video and audio inputs for external devices. S-VIDEO IN 2 Video inputs for external devices with an S-Video output.
10 Operating Instructions and Installation 10-3 Remote Control - This is a special remote control for the visually impaired, and has Braille points on the Power, Channel and Volume buttons. 10-4...
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10 Operating Instructions and Installation 10-5...
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10 Operating Instructions and Installation Memo 10-6...
11 Disassembly and Reassembly 11 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the TFT-LCD WARNING : This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly Cautions : 1. Disconnect the monitor from the power source before disassembly. 2.
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11 Disassembly and Reassembly Description Picture Description 2. Lift up the rear cover and remove the stand. 3. Remove screws from the stand BRKT and lift up the stand BRKT. 11-2...
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11 Disassembly and Reassembly Description Picture Description 4. Disonnect cables from the boards. 5. Remove screws from the boards and lift up the boards. 11-3...
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11 Disassembly and Reassembly Description Picture Description 6. Remove screw from the side connector. Remove screws from the panel BRKT. 7. Lift up the panel BRKT. 11-4...
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11 Disassembly and Reassembly Description Picture Description 8. Lift up the LCD panel. 11-2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures. 11-5...
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11 Disassembly and Reassembly Memo 11-6...
13 Circuit Descriptions 13 Circuit Descriptions 13-1 Block description 13-1-1 Block description with IP Board Bordeaux consists of three main blocks 1. Main board : Video signal processing 2. IP board : Power supply & Inverter 3. T-con board : LCD Panel control 13-1...
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13 Circuit Descriptions 13-1-2 Block description with SMPS Bordeaux consists of three main blocks 1. Main board : Video signal processing 2. SMPS : Power supply 3. T-con board : LCD Panel control 13-2...
14 Reference Infomation 14 Reference Infomation 14-1 Technical Terms - TFT-LCD - Auto Configuration(Auto adjustment) (Thin film Transistor Liquid Crystal Display) This is an algorithm to adjust monitor to optimum ADC(Analog to Digital Converter) condition by pushing one key. This is a circuit that converts from analog signal to digital signals.
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14 Reference Infomation - T.M.D.S - Interlace and Non-Interlace Methods (Transition minimized Differential Signaling) Showing the horizontal lines of the screen from the a kind of transmission method for Digital. top to the bottom in order is called the Non- It can be used from Video card to Main PBA.
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Enables high picture quality and clear sound channel to obtain the best viewing conditions. The throughout the country regardless of the location of Samsung LCD TV has both automatic and manual the viewer. channel fine-tuning features to enable the viewer to adjust their desired settings.
14 Reference Infomation 14-2-2 Component 14-2-3 S-Video Separate RCA Green Pb (Cb) RCA Blue Pr (Cr) RCA Red Audio L 14-2-5 D-SUB RCA White Separate Audio R RCA Red Green Blue 14-2-4 A/V GND Red GND Green GND Blue RCA Yellow CVBS DDC Input power(+5V) Audio L...
14 Reference Infomation 14-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer- generated video signals. 14-3-1 LCD Panel Mode1 mode 14-6...
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Samsung Electronics Co.,Ltd. - This Service Manual is a property of 416, Maetan-3Dong, Yeongtong-Gu, Suwon City, Samsung Electronics Co., Ltd. Gyeonggi-Do, Korea, 443-742 Any unauthorized use of Manual can be Printed in Korea punished under applicable International P/N : BN82-00139U-00 and/or domestic law.
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