4-1 First Checklist for Troubleshooting ……………………………………………………………………………………………………… 4-1 4-2 Checkpoints by Error Mode ……………………………………………………………………………………………………………… 4-2 . Exploded View and Parts List ………………………………………………………………………………………………………………5 5-1 LE37M86BDX Exploded View …………………………………………………………………………………………………………… 5-1 5-2 LE37M86BDX Parts List ………………………………………………………………………………………………………………… 5-2 5-3 LE40M86BDX Exploded View …………………………………………………………………………………………………………… 5-3 5-4 LE40M86BDX Parts List ………………………………………………………………………………………………………………… 5-4 5-5 LE46M86BDX Exploded View ……………………………………………………………………………………………………………...
Contents . Electrical Parts List ……………………………………………………………………………………………………………………………6 6-1 LE37M86BDX Parts List …………………………………………………………………………………………………………………6-1 6-2 LE40M86BDX Parts List …………………………………………………………………………………………………………………6-33 6-3 LE46M86BDX Parts List …………………………………………………………………………………………………………………6-57 6-4 LE52M86BDX Parts List …………………………………………………………………………………………………………………6-82 . Block Diagram …………………………………………………………………………………………………………………………………7 8. W iring Diagram …………………………………………………………………………………………………………………………………8 8-1 Wiring Diagram …………………………………………………………………………………………………………………………… 8-1 8-2 Main Board Layout ………………………………………………………………………………………………………………………...
Page 5
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 : BN82-00191A-00 and/or domestic law.
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 LE37M86BDX Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LE37M86BDX/XEE LE37M86BD,N30A/37M80-GTU,37,LCD-TV,SWEDE M0001 BN90-01157B ASSY COVER FRONT;37M86,EO(IDTV),-,ABS+PM...
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 (LE40F71BX) Cautions : 1.
Page 113
11 Disassembly and Reassembly Description Picture Description 2. Remove screws from the rear-cover and lift up the rear-cover. 3. Disconnet cables from the main and power boards. 11-2...
Page 114
11 Disassembly and Reassembly Description Picture Description 4. Remove screws from the boards and stand BRKT. 5. Lift up the speakers. Remove screws from the BRKT. 11-3...
Page 115
11 Disassembly and Reassembly Description Picture Description 6. Lift up the Panel. 7. Remove Panel Front. 11-4...
13 Circuit Descriptions 13 Circuit Descriptions 13-1 Block description Mosel 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...
Page 119
13 Circuit Descriptions Mosel consists of three main blocks 1. Main board : Video signal processing 2. SMPS : Power supply 3. T-con board : LCD Panel control 13-2...
Page 122
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.
Page 128
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 C/P. Toggles between all the available input sources (TV, Press to change channels. Ext.1, Ext.2, AV, S-Video, Component, PC, HDMI1, In the on-screen menu, use the C/P.
10 Operating Instructions and Installation 10-2 Connection Panel Power Input - The product colour and shape may vary depending on the model. - 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.
Page 130
10 Operating Instructions and Installation HDMI IN 1,HDMI IN 2, HDMI IN 3 - Supports connections between HDMI-connection-enabled AV devices (Set-Top Boxes, DVD players) - No additional Audio connection is needed for an HDMI to HDMI connection. ▶ What is HDMI? -"High Definition Multimedia interface"...
Page 131
10 Operating Instructions and Installation 11. 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.
Page 133
10 Operating Instructions and Installation Memo 10-6...
Page 136
8 Wiring Diagrams 8-3 PIN characteristic CN100 - Main Board power supply NAME SW GND GND GND GND GND B12VS B12VS GND POWER NAME GND GND GND B12V B12V B12V B12V GND Function Define - B12V B12V_CHN, B9V, B8V, B5V_VCCT - B5V B33V, B5V_VCCA, B3.3VD, B2.5V_VDD, B1.8VD, PX_VD1.8, PX_VA1.8, PX_VL1.8, B1.2VD - B12VS...
Page 137
8 Wiring Diagrams CN900 - 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 Key control, from the memu, change up/down Etc. - IR Remote control signal - LED Control the timing and stand by LED color...
Page 140
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...
Page 141
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...
Page 143
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...
Page 144
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...
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.
Page 147
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.
Page 148
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.
Page 150
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...
Page 151
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...
Page 162
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 LE37M86BDX Exploded View M0013 M0014 T0447 M0146 M0215 T0175 M0115 T0003 M0146...
Page 170
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 Power OFF MUTE MENU MUTE...
3 Alignments and Adjustments 3-3 Factory Data 1. Calibration 2. Service 3. White Balance 4. SVP-UX 5. Option Block 6. SGTV5810/NTP3000 7. YC Delay 8. Option Table 9. I2C Check 10. W/B MOVIE 11. Checksum 12. Reset 13. Spread Spectrum T-BDPMPEUD-xxxx (Main Micom Ver) T-BDPMPEUS-xxxx BORD2_CALLA_TR-xxxx (Sub Micom Ver)
Page 173
3 Alignments and Adjustments Range Item Hotel Option Hotel Mode ON/OFF Power On Channel 1~99 Power On Volume 1~100 Max Volume 1~100 Local Key Lock ON/OFF Power On Source RF/Ext.1... Shop Mode ON/OFF Color Space ON/OFF PC Ident ON/OFF Language English/German...
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...
Page 181
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.
Page 182
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 Flat W/B Pattern High light Measurement point...
3 Alignments and Adjustments 3-5 Software Upgrade 3-5-1 How to Update Flash ROM 1. Install the 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.
2 Product Specifications 2 Product specifications 2-1 Fashion Feature Clear Full HD - Full HD Panel with Super Clear Film Improve Spreker and Bass Sound - High Frequency sound improve with Reflection Speaker - 2.2Ch Dome Speaker - Parametric EQ Connectivity - 3 HDMI - HDMI CEC...
2 Product Specifications 2-6 Spec Comparison Model LE37M86BDX/LE40M86BDX/LE46M86BDX/LE52M86BDX Design Frequency Horizontal 30 ~ 61 kHz Vertical 56 ~ 75 Hz Display Color 16.7 M colours PC Resolution WXGA, 1920 x 1080 @ 60 Hz Maximum mode Input Signal Sync Signal H/V Separate, TTL, P.
2 Product Specifications 2-7 Option Specification Item Item Name Code.No Remark Remote Control & BN59-00530A Batteries (AAA x 2) Power Cord 3903-000042 Cover-Bottom BN63-02491A Stand Screw Stand Cleaning Cloth BN63-01798A...
Page 192
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 13V Change a Assy PCB Power. appear at JP845? Does proper DC A3.3V, Check a IC1112, Q1103. A5V appear at Change a main PCB ass'y.
Page 194
Change a main PCB ass'y. of IC2001? Does the digital data appear Check a IC2001 at the output of Change a main PCB ass'y. LVDS (RA2008~2013)? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace a lcd panel?
Page 195
4 Troubleshooting WAVEFORMS R,G,B Output Signal of IC2001...
Page 196
Check a a IC1405 R1333_UX~R1340_UX? Change a main PCB ass'y. Does the digital data Check a IC1405 appear at output of IC4001 Change a main PCB ass'y. LVDS(RA2008~2013)? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace lcd panel?
Page 197
4 Troubleshooting Digital Output Data of IC4001 Signal of HDMI(Data)
Page 198
Does the signal appear at Change a main PCB ass'y. C2085 of IC2001? Does the digital data appear at Check a IC4001. output of RA2008~2013? Change a main PCB ass'y. Check a LVDS cable? Please, Call to Samsung Co. LTD. Replacea lcd panel?
Page 200
Dose the signal appear at Check a connection harness. C2101 of IC2001? Does the signal appear at Check a IC 2001. Out of IC2001 Change a main PCB ass'y RA2008~RA2013? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replace lcd panel?
Page 201
4 Troubleshooting WAVEFORMS CVBS Output Signal 4-10...
Page 202
Check a connection harness. C2088, C2091 of IC2001? Does the digital data appear Check a IC 2001. at Output of IC 2001, Change a main PCB ass'y. RA2008~RA2013? Check a LVDS cable? Please, Call to Samsung Co. LTD. Replacea lcd panel? 4-11...
Page 203
4 Troubleshooting WAVEFORMS Digital Output Data of IC2001 Analog Signal(Y,C) to IC2001 4-12...
Page 204
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 #10, #12, #13, #9 (I2S_CLK, headphone jack./Side AV I2S_SCLK, I2S_LRCLK, Check Sound Processor I2S_DATA) of IC1202? IC1202 (SGTV5810) Check the DC 12V...
Page 205
4 Troubleshooting WAVEFORMS The Signal are Inputed to IC1202 The Signal are Inputed to IC1203 4-14...
Need help?
Do you have a question about the LE37M86BDX and is the answer not in the manual?
Questions and answers