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TFT-LCD TV Chassis GST32KE GST40KE GST32HE GST37HE GST40HE Model LE32R73BD LE40R73BD LE32R74BD LE37R74BD LE40R74BD 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 2006 by Samsung Electronics Co., Ltd. Samsung is the registered trademark of Samsung Electronics Co., Ltd. All rights reserved. LE32R73BD/LE32R74BD/LE37R74BD/LE40R73BD/ This manual may not, in whole or in part, be copied, LE40R74BD and Macmaster Cable Adapter are photocopied, reproduced, translated, or converted to any trademarks of Samsung Electronics 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 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.
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 1. To enter "Service Mode" Press the remote -control keys in this sequence : - If you do not have Factory remote - control INFO MENU MU TE - If you have Factory remote - control - The buttons are active in the service mode.
Carrier Mute TTX Group Auto Gamma Language English Auto Power Panel Option AMLCD_INT Auto FM ---- 2HDMI High Deviation ---- Brt.Sensor ---- EnergySave TTX List Debug LBE/FBE Ch.Table SUWON FRC(Micronas) Dynamic CE iDTV_Cntry FRC(Samsung) Dynamic Dimming Dynamic Contrast Tuner TOP...
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 3-4-3 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.
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3 Alignments and Adjustments d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode) - Adjust red gain ('x') and blue gain ('y') to the color coordinates. * Do not adjust the green gain and sub-contrast (Y) data. Picture 4-3 Toshiba ABL Pattern High light Measurement point...
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 LE32R73BD Exploded View M0014 M0013 T0175 T0447 M0215 T0175 T0003 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 LE32R73BD Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LE32R73BDX/XEC LE32R73BD,R62F/32R70-GST,32,LCD-TV,SPAIN M0216 BN90-00842A ASSY STAND;32R71,BORDEAUX...
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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...
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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 Displays a menu of all of 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 1. Connecting an Aerial or Cable Television Network To view television channels correctly, a signal must be received by the set from one of the following sources: - An outdoor aerial / A cable television network / A satellite network 2.
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10 Operating Instructions and Installation 9. Connecting Component Devices (DTV/DVD) - Connect component video cables (optional) to component connector ("P ", "P ", "Y") on the rear of your set and the other ends to corresponding component video out connectors on the DTV or DVD. - If you wish to connect both the Set-Top Box and DTV (or DVD), you should connect the Set-Top Box to the DTV (or DVD) and connect the DTV (or DVD) to component connector ("P ", "P...
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...
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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 13-2 DTV Signal Description 13-2...
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13 Circuit Descriptions 13-3 DTV Signal Description (Only for R62F) 13-3...
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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 : -20℃ ~ +80℃ Operation Temperature : 0℃ ~ +65℃ 3-2 Test conditions : All data hold under following conditions T(amb.) : +25±2℃ / Humidity : 45 ~ 65 % RH +5V ±...
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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 SIF OUT Level 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.
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...