TFT-LCD MONITOR Chassis Model MH15NS 1510MP MH17NS 1710MP SERVICE Manual TFT-LCD MONITOR CONTENTS 1. Precautions 2. Product Specifications 3. Disassembly & Reassembly 4. Alignment & Adjustments 5. Troubleshooting 6. Exploded View & Parts List 7. Electrical Parts List 8. Block Diagram 9.
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Samsung Electronics Co.,Ltd. 416, Maetan-3Dong, Paldal-Gu, Suwon City, Kyungki-Do, Korea, 442-742. Printed in Korea ❈ This Service Manual is a property of Samsung P/N : BN82-00107D-00 Electronics Co., Ltd. http : //www.samsungmonitor.com (SyncMaster Worldwide) Any unauthorized use of Manual can be punished http : //www.samsung-monitor.com (SyncMaster USA)
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 (READING SHOULD circuit board. NOT BE ABOVE 0.5mA) Disconnect the AC power and DC Power Jack before servicing.
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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.
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2 Product Specifications 2-2 Pin Assignments Sync 15-Pin Signal Cable Connector Type Separate Composite Sync-on-green Pin No. Green Green Green + H/V Sync Blue Blue Blue GND (DDC Return) GND (DDC Return) GND (DDC Return) GND-Red GND-Red GND-Red GND-Green GND-Green GND-Green GND-Blue GND-Blue...
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2 Product Specifications 2-3 Timing Chart This section of the service manual describes the timing that the computer industry recognizes as standard for computer-generated video signals. Table 2-1 Timing Chart Mode VESA VGA2/ VGA3/ 640/75 Hz 640/85 Hz 800/75 Hz 800/85 Hz 1024/60Hz 1024/75Hz...
3 Disassembly and Reassembly This section of the service manual describes the disassembly and reassembly procedures for the MH15NS/MH17NS monitor. WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling these components. 3-1 Disassembly Cautions : 1. Disconnect the monitor from the power source before disassembly. 2.
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3 Disassembly and Reassembly 6. Remove shield from the panel. 3-2 Replacement Order of Lamp Assemblies 1. After confirm there is nothing on the desk, turn the LCD module over and put it on a flat desk set to the ground. 2.
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3 Disassembly and Reassembly 4. Please fix the new lamp units on the LCD module : opposite process 2 and 3. 3-3 Reassembly Reassembly procedures are in the reverse order of disassembly procedures. MH15NS/MH17NS...
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3 Disassembly and Reassembly Memo MH15NS/MH17NS...
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4 Alignments and Adjustments 4-1 General Alignment Instuction 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.
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4 Alignments and Adjustments Memo MH15NS/MH17NS...
5 Troubleshooting 5-1 No Power Does proper DC 14 V appear at DC jack connected Check SMPS PCB and adapter. to at Pin 1, 2 of CN101? Does proper DC 5 V Check SMPS PCB and adapter. appear at Pin 6, 7 of CN101? Does proper DC 2.5 V Check IC104.
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5 Troubleshooting 5-2 No Video (PC Signal) Power indicator is green. Does the signal appear at R110, R111, Check CN100, R106, R107 and R108. C106, C107 and C108? Does the clock pulse Check related circuit of X200, X201. appear at X200, X201? Does the clock pulse appear at Check related circuit of IC201.
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5 Troubleshooting 5-3 No Picture (TV, Video 1, Video 2) Does the signal appear at Check replace the tuner. Pin 1 of CN300? Does the signal appear Check related circuit of IC302. at Pin 14, 16 of IC302? Does the signal appear at Pin 61, Check related circuit of IC300.
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5 Troubleshooting 5-4 No Sound Does the input signal appear at Check related circuit of IC304, IC307. Pin 4, 9 of IC304? Does the low signal at Check related circuit of R386, R389. R386, R389? Does the output signal appear at Check related circuit of IC304.
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6 Exploded View and Parts List ❈ You can search for updated part codes through CMS web site. URL : http://ecms. samsungelectronics. com/ 6-1 MH15NS MH15NS/MH17NS...
7 Electrical Parts List ❈ You can search for updated part codes through CMS web site. URL : http://ecms. samsungelectronics. com/ 7-1-1 MH15NS Main PCB Parts Loc. No. Code No. Description Specification Remarks BN94-00502A ASSY PCB MAIN-SN/CB MH17NS,BASIC C134 2409-001043 C-ORGANIC 47UF,20%,6.3V,WT,TP,6.3X6.8,2.5 C139...
11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-1-1 MH15NS Schematic Diagram +5V_DPMS BZX84C5V1 D104 +5V_DPMS +5V_IN +5V_IN +3.3V_IN +5V_IN 75ohm termination resistor D100 D101 D102 +5V_DPMS very close to the VGA conn. MMBD4148SE MMBD4148SE...
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11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-2-1 MH17NS Schematic Diagram +5V_DPMS BZX84C5V1 D104 +5V_DPMS +5V_IN +5V_IN +3.3V_IN +5V_IN 75ohm termination resistor D100 D101 D102 +5V_DPMS very close to the VGA conn. MMBD4148SE MMBD4148SE...
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11 Schematic Diagrams ❈ This Document can not be used without Samsung’s authorization. 11-2-2 MH17NS Schematic Diagram +8V* +5V_A +3.3V_S R300 R301 R302 2.2K BLKIN C300 C301 R453 R452 R451 100uF 100nF R450 power 1/8W power 1/8W power 1/8W R303...