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TFT-LCD TV Chassis Model GBD26KS LA26R71B GBD32KS LA32R71B GBD40KS LA40R71B SERVICE Manual TFT-LCD TV Feature - Luxurious Slim Design - Supreme Picture Quality - Supreme Sound Quality - Supreme Convenience Quality - Convenience for Users...
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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 : BN82-00139H-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.
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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.
TTX Group Auto Gamma Language English Auto Power Panel Option AMLCD_INT Auto FM Magazine LNA 2HDMI High Deviation ---- Brt.Sensor ---- EnergySave TTX List Flof Debug LBE/FBE Ch.Table SUWON FRC(Micronas) Dynamic CE iDTV_Cntry FRC(Samsung) Dynamic Dimming Dynamic Contrast Tuner TOP...
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3 Alignments and Adjustments 1. Calibration AV Calibration COMP Calibration PC Calibration HDMI Calibration 2. Option Table Inch Option 23"/32"/37"/40"/46"/57" Gamma OFF/AUO/CMO/AMLCD Panel Option AUO / CMO/AMLCD_INT/Panel3 / Panel4 / Panel5 / Panel6 2Hdmi Brt. Sensor EnergySave LBE/FBE FRC(Micronas) FRC2X Carrier Mute Language English...
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3 Alignments and Adjustments 3. White Balance Sub Brightness R-Offset G-Offset B-Offset Sub Contrast R-Gain G-Gain B-Gain 4. SVP-PX ComB Filter Y-Filter Sharpness H2Gain H4Gain V2Gain V4Gain Sr2Gain Sr4Gain Sl2Gain Sl4Gain Peakth1 Peakth2 2F H Peakth3 3F H Y_NR_OFF C_NR_OFF Y_NR_ON C_NR_ON RGB Calibration...
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3 Alignments and Adjustments low high delta Calibration Target AV ADC 17H D5H COMP ADC 0F H EBH PC ADC 17H D5H ALL RGB 00H DDH Color Management Skin Direction Reddish Skin Enhane Green Stretch Blue Stretch 5. Option block FRC(Micronas) FRC2X LBE/FBE...
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3 Alignments and Adjustments 7. YC Delay RF PAL-B/G RF PAL-D/K RF PAL- I RF SECAM-B/G RF SECAM-D/K RF SECAM-L/L' RF NTSC3.58 RF NTSC4.43 AV PAL AV SECAM AV NTSC 3.58 AV NTSC4.43 AV PAL60 8. Adjust Video Mute Time Melody Volume Ana_Dimm_Max LNA PLUS...
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3 Alignments and Adjustments 9. I2C Check 10. W/B MOVIE WB Movie Color Mode Movie W1 R Gain W1 B Gain W1 R Offset W1 B Offset W2 R Gain W2 B Gain W2 R Offset W2 B Offset Movie Contrast Movie Brightness Movie Color Movie Sharpness...
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.
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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.
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...
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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 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...
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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 LA32R71BX/SHI Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA LA32R71BX/SHI LA32R71B,Q62E/32R70-GBD,32,LCD-TV,TANZAN M0001 BN90-00840E ASSY COVER FRONT;32R71,SO,BORDEAUX...
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6 Electrical Parts List Level Loc. No. Code No. Description & Specification Q'ty SA/SNA ...3 TEST901 3711-004484 HEADER-BOARD TO CABLE;BOX,5P,1R,2mm,STRA ...3 CN700_OP 3711-004909 HEADER-BOARD TO CABLE;BOX,14P,2R,2MM,ANG ...3 CN503 3711-005884 HEADER-BOARD TO BOARD;BOX,30P,2R,2mm,ANG ...3 CN800 3711-005942 HEADER-BOARD TO CABLE;BOX,16P,1R,2mm,STR ...3 JA708 3722-001061 JACK-PHONE;1P,3.6PI,AG,BLK,N ...3...
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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 8-4 Power Board Layout...
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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 SOUND B12V B12VS B5V_VCCT TP800 IC813 IC800 L101 TP949 TP950 C805 C800 BA178M08FP MC33269DTRK-5.0 3.9uH 100nF 10nF < TORINO SMPS >...
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9 Schematic Diagrams -This Document can not be used without Samsung ’ s authorization. 9-2 Jack Schematic Diagram SC A R T1 Service _AN Y R400_EU 47Kohm 1/10W R401_EU 47Kohm 1/10W JA701_EU R402_EU 330ohm SC1_SR_OUT AGND_IN XREF JA716 R403 470ohm...
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9 Schematic Diagrams -This Document can not be used without Samsung ’ s authorization. 9-3 Micom Schematic Diagram...
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9 Schematic Diagrams -This Document can not be used without Samsung ’ s authorization. 9-4 SVP-PX/PX-Power/LBE-Option Schematic Diagram...
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9 Schematic Diagrams -This Document can not be used without Samsung ’ s authorization. 9-5 Application Schematic Diagram...