Samsung syncmaster 920NW free download

File name 00. Cover.pdf

http://www.aldiarman.blogspot.com/ LCD-Monitor Model 920NW SERVICE LCD Monitor Manual Fashion Feature - 19" LCD Monitor (1440x 900 ) - Response Time (5ms) - Simple Stand - Silver / Black ColorVariation http://www.aldiarman.blogspot.com/ Copyright ©2007 by Samsung Electronics Co., Ltd. All rights reserved. This manual may not, in whole or in part, be copied, photocopied, reproduced, translated, or converted to any electronic or machine readable form without prior written permission of Samsung Electronics Co., Ltd. 920NW Service Manual First edition July 20067. Printed in Korea. Trademarks Samsung is the registered trademark of Samsung Electronics Co., Ltd. 920NW and MacMaster Cable Adapter are trademarks of Samsung Electronics Co., Ltd. Macintosh, Power Macintosh are trademarks of Apple Computer, Inc. All other trademarks are the property of their respective owners. ii http://www.aldiarman.blogspot.com/ Contents 1. Precautions ...1-1 1 1-1 Safety Precautions ... 1-1 1-2 Servicing Precautions ... 1-2 1-3 Electrostatically Sensitive Devices (ESD) Precautions ... 1-2 1-4 Installation Precautions ... 1-3 2. Product specifications ...2-1 2 2-1 Fashion Feature... 2-1 2-2 Specifications ... 2-1 2-3 Option Specification ... 2-2 3. Alignments and Adjustments ...3-1 3 3-1 Required Equipment ... 3-1 3-2 Automatic Color Adjustment ... 3-1 3-3 DDC EDID Data Input ...

File name 01. Precautions.pdf

http://www.aldiarman.blogspot.com/ 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 1. 2. For continued safety, do not attempt to modify the circuit board. Disconnect the AC power and DC power jack before servicing. 1-1-2 Servicing the LCD Monitor 1. 2. When servicing the LCD Monitor, Disconnect the AC line cord from the AC outlet. It is essential that service technicians have an accurate voltage meter available at all times. Check the calibration of this meter periodically. 1-1-3 Fire and Shock Hazard Before returning the monitor to the user, perform the following safety checks: 1. Inspect each lead dress to make certain that the leads are not pinched or that hardware is not lodged between the chassis and other metal parts in the monitor. Inspect all protective devices such as nonmetallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistorcapacitor networks, mechanical insulators, etc. Leakage Current Hot Check (Figure 1-1): WARNING : Do not use an isolation transformer during this test. Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI C101.1, Leakage Current for Appliances), and Underwriters Laboratories (UL Publication UL1410, 59.7). 4. Figure 1-1. Leakage Current Test Circuit With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit's AC switch first in the ON position and then OFF, measure the current between a known earth ground (metal water pipe, conduit, etc.) and all exposed metal parts, including: metal cabinets, screwheads and control shafts. The current measured should not exceed 0.5 milliamp. Reverse the power-plug prongs in the AC outlet and repeat the test. 2. 3. 1-1-4 Product Safety Notices Some electrical and mechanical parts have special safetyrelated characteristics which are often not evident from visual inspection. The protection they give may not be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by on schematics and parts lists. A substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards. Product safety is under review continuously and new instructions are issued whenever appropriate. 1-1 http://www.aldiarman.blogspot.com/ 1 Precautions 1-2 Servicing Precautions WARNING: Caution: Note: An electrolytic capacitor installed with the wrong polarity might explode. Before servicing units covered by this service manual, read and follow the Safety Precautions section of this manual. If unforeseen circumstances create conflict between the following servicing precautions and any of the safety precautions, al

File name 02. Product Specifications.pdf

http://www.aldiarman.blogspot.com/ 2 Product Specifications 2 Product Specifications 2-1 Fashion Feature - 19" LCD Monitor (1440x 900 ) - Response Time (5ms) - Simple Stand - Silver / Black ColorVariation 2-2 Specifications Features Size Pixel Pinch Frequency Horizontal / Vertical Bandwidth (MHz) Resolution Color Signal Input Sync. Type Video Input Power Consumption Stand Swivel ( left / right ) Power Supply Dimension (W x D x H) Separate/Composite/No Sync. On Green Analog Signal Level Max 36 W Power saving <1W Yes NO AC 100 ~ 240 VAC(+/-10 %) , 60/50 Hz ± 3 Hz 439.006 x 289.006 x 65.45 mm3 (Without Stand) 439.006x355.452x81.12 mm3 (With Simple Stand) 30 ~ 81 kHz/ 56 ~ 75 Hz 140MHz 1440 x 900@60Hz Sliver & Black 19" Diagonal (41 x 27cm) 0.285(H) x 0.285(V) Specifications 2-1 http://www.aldiarman.blogspot.com/ 2 Product Specifications 2-3 Option Specification Item Item Name CODE.NO Remark GUIDE, QUICK SETUP BH68-00376L-04 MNL User's(CD) BN59-00537A-00 CARS, WARRANTY BH68-70438A-10 D-Sub Cable N/A 2-2

File name 03. Alignments and Adjustments.pdf

http://www.aldiarman.blogspot.com/ 3 Alignments and Adjustments 3 Alignments and Adjustments This section of the service manual explains how to use the RS232 JIG. This function is needed for AD board change. 3-1 Required Equipment The following equipment is necessary for adjusting the monitor: Computer with Windows 95, Windows 98, Windows NT, Windows 2000, or Windows XP. MTI-2031 DDC MANAGER JIG 3-2 Automatic Color Adjustment To Analog video, In 16gray or any pattern using black and white and any mode.(16gray and XGA mode recommend) 1. Push the OSD Menu button to open the OSD 2. Selectl language English 3. Push enter button during 5 seconds. 4. See the screen flashing 3-3 DDC EDID Data Input 1. Input DDC EDID data when replacing AD PCB. 2. Receive/Download the proper DDC file for the model from HQ quality control department. Install the below jig (Figure 1) and enter the data. Monitor PC PC for JIG Figure 1. 3-1 http://www.aldiarman.blogspot.com/ 3 Alignments and Adjustments 3-4 VGA EDID table 0 1 2 3 4 5 6 7 0 00 XX 11 01 13 51 79 00 1 FF XX 50 01 00 0E 6E XX 2 FF 01 54 01 52 00 63 XX 3 FF 03 BF 01 0E 0A 4D XX 4 FF 6C EF 01 11 20 61 XX 5 FF 22 80 01 00 20 73 XX 6 FF 1B 81 30 00 20 74 XX 7 00 78 80 2A 1E 20 65 XX 8 4C 2A 71 00 00 20 72 XX 9 2D DC 4F 98 00 20 0A XX A 2B 55 81 51 00 00 20 XX B 02 A3 40 00 FD 00 20 0A C XX 59 01 2A 00 00 00 20 D XX 48 01 40 38 FC 00 20 E XX 9E 01 30 4B 00 00 00 F XX 24 01 70 1E 53 FF CS Details: Byte(Hex) 00-07(8 byte) 08--09 0A--0B 0C--0F 10 11 12 13 14 Field Name and Comments Head Information ID Manufacturer Name Product ID Code Last 5 Digits of Serial Number Week of Manufacture Year of Manufacture EDID Version Number EDID Revision Number Video Input Definition SAM 022B Used Notes1 Notes2 Notes3 1 3 Analog Signal 0.700,0.000(0.700Vpp) Separate Sync Composite Sync 34 27 2.2 Active Off Display Type = R/G/B Color Preferred Timing Mode Red X - 0.640, Red Y - 0.349, Green X - 0.284, Green Y - 0.617, Blue Y - 0.067, Blue X - 0.142, White X - 0.313, White Y - 0.329 720x400@70Hz 720x400@88Hz(no) 640x480@60Hz 640x480@67Hz 640x480@72Hz 640x480@75Hz 800x600@56Hz 800x600@60Hz Description EDID 00,FF,FF,FF, FF, FF, FF,00 4C,2D 2B,02 XX,XX,XX,XX XX XX 01 03 6C 15 16 17 18 Max Horizontal Image Size (cm) Max Vertical Image Size (cm) Display Gamma Power Management and Supported Feature(s) 22 1B 78 2A 19-22 (10 byte) Chroma Info DC,55,A3,59, 48,9E, 24,11, 50,54 23 Established Timing I BF 3-2 http://www.aldiarman.blogspot.com/ 3 Alignments and Adjustments Byte(Hex) 24 Field Name and Comments Established Timing II Description 800x600@72Hz 800x600@75Hz 832x624@75Hz 1024x768@87Hz (no) 1024x768@60Hz 1024x768@70Hz 1024x768@75Hz 1280x1024@75Hz Support 1280x1024@60Hz81,8071,4F 1152x864@75Hz 1280x960@60Hz Not Used Not Used Not Used Not Used Not Used 1280X1024@60HZ Pixel Clock:108.00MHZ EDID EF 25 Manufacturers Reserved Timings 26-35 (16 byte) Standard Timing Identification 80 81,80 81,40 01,01 01,01 01,01 01,01 01,01 30,

File name 04. Troubleshooting .pdf

http://www.aldiarman.blogspot.com/ 4 Troubleshooting 4 Troubleshooting 4-1 Common Acknowledge - If you change the interface board, be sure that the U105, U106 and U103 these three components also changed to the new I/F board because there was program inside. If not, please re-write EDID or upload firmware into Flash memory via VGA Cable. - If you adjust clock and phase, please do it at the condition of Windows shut down pattern. - If you confirm the R.G.B. color is normal or not, please do it under 16-grey scalar pattern. - This LCM is analog interface. So if the entire screen is an abnormal color that means the problem happen in the analog circuit part, if only some scale appears abnormal color that stand the problem happen in the digital circuit part. - If you check the H/V position, please use the crosshatch pattern. - This LCM support more than 30 timing modes, if the input timing mode is out of specification, the picture may appears abnormally. - If brightness uneven, repairs Inverter circuit or change a new panel. - If you find the vertical line or horizontal line lost on the screen, please change panel. 4-1 http://www.aldiarman.blogspot.com/ 4 Troubleshooting 4-2 No Power & Power LED Off No power Check primary rectifier voltage Check circuit if short Check IC802, C805, T801 Check F801, P801, RT,801,D801 Check pin6 of IC802 voltage about 12V Check C810,D803,C807 Check pin2 of IC802 voltage about 3V Check primary OVP, OLP and secondary feedback, Check pin1 of IC802 voltage is voltage is below 1V Check R811, R810, R809, R808,R814 END 4-2 http://www.aldiarman.blogspot.com/ 4 Troubleshooting 4-3 Output power is unstable Unstable power Check sampling Circuit Check R822, R823, R824 Change R822, R823, R824 Check the R pin voltage of IC803 about 2.5V Check the C pin voltage of IC803 if 3V Change IC803 Check R819, R820 Check pin1 of IC802 voltage is 5.8V Check R818, D804, C807 if short Change R818 Check pin1 of IC802 voltage about 3V Change R808, R809, R810, R811 END 4-3 http://www.aldiarman.blogspot.com/ 4 Troubleshooting 4-4 Backlight can't be turned on No backlight Yes No LED lamp is OK Yes No power supply to inverter Check the cable that from I/F BD to P/I BD is ok Yes Is there 14V voltage on pin 3,4 of T501, T502 Yes Is there PWM signal on pin 4 of IC501 Yes Is there High level voltage on pin10 of IC501 Yes No Lamp connector opened No Check I/F BD No Check I/F BD No U501, U502 fail No Check power supply Replace U501, U502 Vsense voltage 2.9V No Are there PWM signal on pin1, pin15 of IC501 Yes Pin 5 of IC501 voltage is Low level Yes Pin 3 of IC501 voltage is high level voltage No IC501 failure Yes Feedback circuit failure Yes Check C524,R528, R533, D507 Yes IC501 protected Yes Check D505, D511, D512, R513, R520, C520 END 4-4 http://www.aldiarman.blogspot.com/ 4 Troubleshooting 4-5 Black Screen and backlight turn on Black Screen Check power supply: Pin1, 2 of CN102 Yes Check pin34, 51, 66, and 82 Of

File name 05. Exploded View and Parts List.pdf

http://www.aldiarman.blogspot.com/ 6 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 Exploded View M0215 7140200053 7140100097 5-1 http://www.aldiarman.blogspot.com/ 5 Exploded View & Parts List 5-1-1 Parts List Location.No M0215 7140200053 7140100097 CODE-NO BN07-00330A BN82-00152A BN82-00188B SPECIFICATION & DESCRIPTION LCD-PANEL;M190A1-L02,Haydn,6BIT FRC,427. A/S MATERIAL ASSY-BASE;LE1729 A/S MATERIAL ASSY-STAND;LE1961 Q'TY 1 1 1 SA/SNA S.A S.A S.A REMARK 5-2

File name 07. Block Diagram.pdf

http://www.aldiarman.blogspot.com/ 7 Block Diagrams 7 Block Diagram 7-1 Power tree 7-1 http://www.aldiarman.blogspot.com/ 7 Block Diagrams 7-2 Main Board part 7-3 IP Board Part (Power part) 7-2 http://www.aldiarman.blogspot.com/ 7 Block Diagrams 7-4 IP BOARD part(Inverter Part) Vin voltage (+14.2V) DC to DC (+14.2V to 5.0V) Brightness control signal ON/OFF MosFET U501 MosFET U502 Transformer T502 CCFL1 CCFL2 Transformer T501 CCFL1 CCFL2 CCFL PWM Control IC IC501 Voltage feedback Current feedback 7-3 http://www.aldiarman.blogspot.com/ 7 Block Diagrams Memo 7-4

File name 08. Block Diagram.pdf

http://www.aldiarman.blogspot.com/ 8 Wiring Diagram 8 Block Diagram 8-1 http://www.aldiarman.blogspot.com/ 8 Wiring Diagram Memo 8-2

File name 09. Schematic Diagrams.pdf

http://www.aldiarman.blogspot.com/ 9 Schematic Diagrams 9 Schematic Diagrams - This Document can not be used without Samsung s authorization. 9-1 INPUT 9-1 http://www.aldiarman.blogspot.com/ 9 Schematic Diagrams 9-2 DCINPUT 9-2 http://www.aldiarman.blogspot.com/ 9 Schematic Diagrams 9-3 SCALER 9-3 http://www.aldiarman.blogspot.com/ 9 Schematic Diagrams 9-4 POWER 9-4 http://www.aldiarman.blogspot.com/ 9 Schematic Diagrams 9-5 POWER 9-5 http://www.aldiarman.blogspot.com/ 9 Schematic Diagrams 9-6 KEYPAD 9-6

File name 11. Disassembly and Reassembly.pdf

http://www.aldiarman.blogspot.com/ 11 Disassembly and Reassembly 11 Disassembly and Reassembly 11-1 Disassembly Block LE 1729 LCD Monitor STAND_REAR*1 HINGE *1 SCREW M4*10 *3 ASSY, BASE BASE*1 RUBBER FOOT *6 SCREW.P.CROSS,T.T-4*8,Zn ASSY STAND SCREW M4*10 *4 STAND_FRONT *1 BACK COVER BKT-VESA *4 LENS*1 CONTROL BOARD*1 ASSY FRONT BEZEL BEZEL*1 BUTTON,FUNCTION *1 CHASSIS *1 PCBA I/F BOARD *1 Power Board *1 SCREW M3*6 CLIP,WIRE *1 SHIELING*1 ASSY PANEL*1 SCREW M3*5, *4 CABLE 30P FFC BOLT,#4-40*11.8,Ni *2 INNOLUX PANEL EN01 Note: The DIS assembly direction please following direction of arrowhead 11-1 http://www.aldiarman.blogspot.com/ 11 Disassembly and Reassembly Description 1. Remove 4 screw from the stand Picture Description 2. Remove the stand and front coler 11-2 http://www.aldiarman.blogspot.com/ 11 Disassembly and Reassembly Description 3. Lift the back cover and use the jig to remove the shield lamp. Picture Description 4. Disconnect cables 5. Lift up the shield and disconnect LVDS cables 11-3 http://www.aldiarman.blogspot.com/ 11 Disassembly and Reassembly Description Picture Description 6. Lift up the LCD panel 11-2 Reassembly Reassembly procedures are in the reverse order of disassembly procedures. 11-4

File name 12. PCB Diagram.pdf

http://www.aldiarman.blogspot.com/ 12 PCB Diagram 12 PCB Diagram 12-1 Main Board 12-1-1 Main Board Top Layer 12-1-2 Main Board Bottom Layer 12-1 http://www.aldiarman.blogspot.com/ 12 PCB Diagram Memo 12-2

File name 13. Circuit Descriptions.pdf

http://www.aldiarman.blogspot.com/ 13 Circuit Descriptions 13 Circuit Descriptions 13-1 Overall Block Structure 13-1-1 Power Tree 1. When the AD board is in DPMS state: 1.1 The IP has been designed so that it operates with a power consumption of less than 0.6W of. 1.2 The Scaler consumes power up to 37mA 1.3 The power to the panel is switched off 2. When the AD board is operating normally: 2.1 The maximum power consumption of the panel lamps is described below (It may vary depending on the panel manufacturer) 17" : 4*(7.0mA*650Vrms)=4* 4.55W=18.2W 2.2 The power consumption of the Panel Control board is as follows: 5V*645mA=3.23W 2.3 The power consumption of the Scaler is as follows: 3.3V*204mA + 1.8V*145mA = 0.93W 13-1 http://www.aldiarman.blogspot.com/ 13 Circuit Descriptions 13-1-2 Main board Parts 1. Inverter: A conversion device that converts DC rated voltage/current to high ones necessary for the panel lamp. 2. DC/DC(Regulator): General term for DC to DC converting devices. The IP board receives 5V and outputs 1.8 or 3.3V that is supplied to the scaler (TSUM16AL-LF). 3. Power MosFET: The IP board receives 5V and outputs a lower voltage in DPMS mode and supplies the whole 5V for the panel operating board in normal conditions. In that case, the switching of Power MosFET is controlled by Micom. 4. Scaler: Receives the analog R,G,B signals and convert them to proper reso- lutions using up- or down- scaling that are transferred to the panel in the LDVS formats. 5. Crystal(Oscillator): Use one 14.318MHz oscillator externally to supply power to both MCU and Scaler at the same time. 6. Scaler & EEPROM: I2C is a two-way serial bus of two lines that supports communications across the integrated circuits as well as between FLASH and EEPROM. In particular, MCU(TSUM16AL-LF) and use the SDR direct bus for mutual communications, which is an effective, speedy system because it allows 4 additional address/data lines com- pared to the old serial systems. 7. Function Key: A certain keystroke generates a certain electrical potential, which is transferred into ADC input port of the MCU and then con- verted to a digital value by the A/D converter of the chip. The digital value (data) is a clue to which key is entered. 13-2 http://www.aldiarman.blogspot.com/ 13 Circuit Descriptions 13-1-3 IP Board Part(Power) Schematic Diagrams 13-3 http://www.aldiarman.blogspot.com/ 13 Circuit Descriptions 13-3 IP BOARD part(Inverter Part) Vin voltage (+14.2V) DC to DC (+14.2V to 5.0V) Brightness control signal ON/OFF MosFET U501 MosFET U502 Transformer T502 CCFL1 CCFL2 Transformer T501 CCFL1 CCFL2 CCFL PWM Control IC IC501 Voltage feedback Current feedback 13-4