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TFT-LCD TV GSD27SEN Chassis GSD32HEU GSD37SEN GSD40SEN LE27S73BD Model LE32S73BD LE32S66BD LE37S73BD LE40S73BD LE32S74BD SERVICE Manual TFT-LCD TV Fashion Feature - Luxurious Slim Design - Supreme Picture Quality - Supreme Sound Quality - Supreme Convenience Quality - Convenience for Users...
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Copyright Trademarks ⓒ 2007 by Samsung Electronics Co., Ltd. Samsung is the registered trademark of Samsung Electronics Co., Ltd. All rights reserved. LE27S73BD/LE32S66BD/LE37S73BD/ This manual may not, in whole or in part, be copied, LE40S74BD and Macmaster Cable Adapter are photocopied, reproduced, translated, or converted to any trademarks of Samsung Electronics Co., Ltd.
4-1 First Checklist for Troubleshooting ………………………………………………………………………………………………………4-1 4-2 Checkpoints by Error Mode ……………………………………………………………………………………………………………… 4-2 . Exploded View and Parts List …………………………………………………………………………………………………………………5 5-1 LE27S73BD Exploded View …………………………………………………………………………………………………………… 5-1 5-2 LE27S73BD Parts list …………………………………………………………………………………………………………………… 5-2 5-3 LE32S66BD Exploded View …………………………………………………………………………………………………………… 5-3 5-4 LE32S66BD Parts list …………………………………………………………………………………………………………………… 5-4 5-5 LE37S73BD Exploded View ……………………………………………………………………………………………………………...
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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 : BN82-00139V-00 and/or domestic law.
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 Supreme Digital Interface & Networking -With a built-in HD digital tuner, it supports HD broadcasting with no particular set-top box and provides simple access with a single remote control. Excellent Picture Quality -DNIe technology provides life-like clear images.
2 Product Specifications 2-2 Technical and Environmental Specifications Model Name LE27S73BD LE32S73BD LE37S73BD LE40S73BD Screen Size (Diagonal) 27 inch 32 inch 37 inch 40 inch PC Resolution 1360 x 768 @ 60 Hz 1360 x 768 @ 60 Hz 1360 x 768 @ 60 Hz...
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 " " Power ON Power OFF INFO MENU MUTE - If you have Factory remote - control PICTURE ON DISPLAY FACTORY - The buttons are active in the service mode. 1.
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...
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3 Alignments and Adjustments 3-4-3 Conditions for Measurement 1. On the basis of toshiba ABL pattern : High Light level (57 IRE) - INPUT SIGNAL GENERATOR : MSPG-925LTH * Mode 2 : 744X484@60 Hz 6 : 1280X720@60 Hz NO 21 : 1024X768@60 Hz * Pattern NO 36 : 16 Color Pattern NO 16 : Toshiba ABL Pattern 2.
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.
1) Turn off LCD-TV. 2) Connect the RS-232 cable to the LCD-TV 3) Execute the sv2_fr.exe file. 4) Assign the path of samsung.tvz file (application image) 5) Execute the progress follow the screen until step 2. 6) Turn On the LCD-TV.
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 CM801? Does proper DC A3.3V, Check a IC1008, Q1013. A5V appear at Change a main PCB ass'y.
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Change a main PCB ass'y. IC4001? Does the digital data appear Check a IC4001 at the output of Change a main PCB ass'y. LVDS (R41043~4113)? 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 R2106~R2113? Change a main PCB ass'y. Does the digital data Check a IC500 appear at output of IC4001 Change a main PCB ass'y. LVDS(R4104~4113)? 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 IC4001? Does the digital data appear at Check a IC4001. output of R4104~R4113? Change a main PCB ass'y. 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 IC4001? Does the signal appear at Check a IC4001. Out of IC4001 R4104~R4113? Change a main PCB ass'y 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 IC4001? Does the digital data appear at Check a IC4001. Output of IC4001, Change a main PCB ass'y. R4104~R4113? 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...
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4 Troubleshooting 4-2-7 No Sound Connect a sound cable. Picture is display, no sound. control a volume. Does the signal appear at Check a connection harness and Pin #60, #61, #62, #63(I2S_CLK, headphone jack./Side AV I2S_SCLK, Check Sound Processor I2S_LRCLK, I2S_DATA) IC1009(STV8257) of IC1009 ? 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 LE27S73BD Exploded View M0013 T0447 T0159 M0215 T0003 T0175 M0014 T0175 M0013...
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 LE27S73BD Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LE27S73BDX/FID LE27S73BD,R62A/27S70-GSD,27,LCD-TV,FINLA M0001 BN90-00978D ASSY COVER FRONT;27S73,EO,ABS+PMMA,HB,BK...
8 Wiring Diagrams 8-3 PIN characteristic CN1001 - Main Board power supply NAME B12V GND GND GND B12VS B12VS B12VS GND GND GND Function Define - 12V B5V_VCCA, B5V_VCCB, IC611 POWER SUPPERLY - 5V B5V, B3.3V, B2.5V_VDD, B3.3VD, VCC50 - 12VS B12VS CN1002 / CN1003 - SPEAKER CONNECTOR NAME...
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8 Wiring Diagrams CN5001 - Front control NAME GND LED_ LED_ GND INPUT1 INPUT2 GREEN LED 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_GREEN/LED_RED Control the timing and stand by LED color CN4002 - Panel control...
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8 Wiring Diagrams CNB811 - Stand by supply NAME Live Netural SW_POWER VOLTAGE ON/OFF Functing Define - Refer to : CN802 function define CNM801 - Main Board power supply NAME GND GND GND GND Functing Define - Refer to : CN801 function define CNM804 - Panel control NAME SW_inverter...
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8 Wiring Diagrams CN801 - Main Board power supply NAME 24V GND GND GND GND Functing Define - 24V LAMP INVERTER Voltage - B/L Brightness sensor power - A_D ANA_DIMMING - P_D PWM_DIMMING...
10 Operating Instructions and Installation 10 Operating Instructions and Installation 10-1 Front - The product colour and shape may vary depending on the model. 1. SOURCE 5. Speakers Toggles between all the available input sources (TV, Ext.1 , Ext.2, AV, S-Video, Component, PC, 6.
10 Operating Instructions and Installation 10-2 Connection Panel - Whenever you connect an external device to your TV, make sure that power on the unit is turned off. - When connecting an external device, match the colour of the connection terminal to the cable. 10-2...
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10 Operating Instructions and Installation Connecting HDMI/DVI - Supports connections between HDMI-connection-enabled AV devices (Set-Top Boxes, DVD players, AV receivers and digital TVs). - No additional Audio connection is needed for an HDMI to HDMI connection. What is HDMI? - "High Definition Multimedia interface" allows the transmission of high definition digital video data and multiple channels of digital audio ( 5.1 channels).
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10 Operating Instructions and Installation 11. DIGITAL AUDIO OUT (OPTICAL) - Connect to a Digital Audio Component. 12. Connecting CI (Common Interface) CARD - When not inserting "CI CARD" in some channels, "Scrambled Signal" is displayed on the screen. - The pairing information containing a telephone number, CI CARD ID, Host ID, and other information will be displayed in about 2~3 minutes.
10 Operating Instructions and Installation 10-3 Remote Control 1. Selects a target device to be controlled by the Samsung remote control (TV, DVD, STB, CABLE, VCR) 2. Television Standby button 3. Number buttons for direct channel access 4. One/Two-digit channel selection 5.
For detailed information on installing the wall mount, see the instructions provided with the Wall Mount items. Contact a technician for assistance when installing the wall mounted bracket. Samsung Electronics is not responsible for any damage to the product or injury to yourself or others if you elect to install the TV on your own.
11 Disassembly and Reassembly 11 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the TFT-LCD TV. WARNING : This monitor contains electrostatically sensitive devices. Use caution when handling these components. 11-1 Disassembly Cautions : 1.
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11 Disassembly and Reassembly Description Picture Description 2. Remove 3 screws from the stand. 3. Remove 5 screws from the Main PCB. Lift up the shield-cover. 11-2...
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11 Disassembly and Reassembly Description Picture Description 4. Disonnect cable from the boards. Remove 13 screws from the boards. 5. Lift up the boards. Remove 7 screws from the stand BRKT. 11-3...
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11 Disassembly and Reassembly Description Picture Description 6. Lift up the stand BRKT. Remove screws from the Lcd panel. 7. Lift up the Lcd panel. Remove 5 screws from the BRKT. 11-4...
11 Disassembly and Reassembly Description Picture Description 8. Lift up the BRKT. 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 13-4 RF/DTV Tuner (DNOS303ZH261B(S)) SPEC. 1. Description 1-1 Receiving System : Designed to cover all bands in VHF and UHF including digital terrestrial(DVB-T) and hyper channels for CCIR system. 1-2 It built in COFDM-Demod IC & Analog Demod IC (PAL B/G, I, D/K, SECAM L/L') 1-3 Receiving Channel : 47MHz ~ 862MHz 1-4 Intermediate Frequency...
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13 Circuit Descriptions 3. General Characteristics 3-1 Temperature Range Storage Temperature : ~ +80 Operation Temperature : ~ +65 3-2 Test conditions : All data hold under following conditions T(amb.) : +25 2 / Humidity : 45 ~ 65 % RH Supply voltage(5V) : Tuning voltage (BT) : +30V...
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13 Circuit Descriptions 4-11 Reference Frequency The X-tal for the RF block's PLL : 4MHz 4-12 Phase Noise (step frequency 166.67kHz for digital) @ 1kHz : -84dBc/Hz typ. -75dBc/Hz max. @ 10kHz : -90dBc/Hz typ. -80dBc/Hz max. 4-13 Control Data Bus : 4-14 Control Data Format : refer 5 section 4-15 Image PAL Interference Protection Ratio...
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13 Circuit Descriptions short echo : 20.2dB max long echo : 22.2dB max short delay parameter long delay parameter 5. Electrical Characteristics ( Analog Demodulation ) 5-1 PIF characteristics 13-7...
13 Circuit Descriptions 5-2 AFT Characteristics Specification Parameter Unit Remark Min. Typ. Max. Alignment center : 2.5V AFT Alignment IF input level : 90dBuV Accuracy P/S = -10dB Standard color bar :87.5% mod. 5-3 Audio characteristics Specification Parameter Unit Remark dBuV Standard color bar 87.5% mod.
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 - DDC(Display data channel) - Interlace and Non-Interlace Methods It is a communication method between Host Showing the horizontal lines of the screen from Computer and related equipment. the top to the bottom in order is called the Non- It can make it Plug and Play between PC and Interlace method while showing odd lines and Monitor.
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Enables high picture quality and clear sound channel to obtain the best viewing conditions. throughout the country regardless of the location The Samsung LCD TV has both automatic and of the viewer. manual channel fine-tuning features to enable the viewer to adjust their desired settings.
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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...
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14 Reference Infomation 14-2-7 Scart 1 Signal Signal Audio output R Audio input R Video GND (RGB red) Audio output L Audio common GND RGB red input Video GND (RGB blue) Fast Blanking signal (RGB switching) Audio input L Video output GND RGB blue input Video input GND Switching voltage...
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 14-7...
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14 Reference Infomation Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks LTA170V1 BN07-00139A 17" Panel for Muse 4:3 VGA TV LTM190E1-L02 BN07-00128A New Panel from AMLCDl, Specification : 6bit Driver IC LTM170EX-L01 BN07-00143A Development new Panel from AMLCD LTM170E8-L01 BN07-00144A Development new Panel from AMLCD LTM170E6-L04 BN07-00129B ZPD panel for AMLCD (Panel only for TCO03)