三星显示器图纸 (90).pdf

文军维修 资料系列 SAMSUNG COLOR MONITOR SyncMaster 800TFT Manual SERVICE COLOR MONITORCONTENTS 1 Precautions 2 Product Specifications 3 Disassembly insulating materials cabinet backs adjustment and compartment covers or shields isolation resistor capacitor networks mechanical insulators etc 3 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 Figure 1 1 Leakage Current Test Circuit 4 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 1 1 4 Product Safety Notices Some electrical and mechanical parts have special safety related 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 may create shock fire and or other hazards Product safety is under review continuously and new instructions are issued whenever appropriate SyncMaster 800TFT1 1 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 DEVICE UNDER TEST TEST ALL EXPOSED METAL SURFACES READING SHOULD NOT BE ABOVE 0 5mA LEAKAGE CURRENT TESTER 2 WIRE CORD ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG AS REQUIRED EARTH GROUND 1 2 1 General Servicing Precautions 1 Always unplug the unit s AC power cord from the AC power source and disconnect the DC power jack before attempting to a remove or reinstall any component or assembly b disconnect PCB plugs or connectors c connect a test component in parallel with an electrolytic capacitor 2 Some components are raised above the printed circuit board for safety An insulation tube or tape is sometimes used The internal wiring is sometimes clamped to prevent contact with thermally hot components Reinstall all such elements to their original position 3 After servicing always check that the screws components and wiring have been correctly reinstalled Make sure that the area around the serviced part has not been damaged 1 Immediately before handling any semiconductor components or assemblies drain the electrostatic charge from your body by touching a known earth ground Alternatively wear a discharging wrist strap device To avoid a shock hazard be sure to remove the wrist strap before applying power to the monitor 2 After removing an ESD equipped assembly place it on a conductive surface such as aluminum foil to prevent accumulation of an electrostatic charge 3 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESDs 4 Use only a grounded tip soldering iron to solder or desolder ESDs 5 Use only an anti static solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ESDs 4 Check the insulation between the blades of the AC plug and accessible conductive parts examples metal panels input terminals and earphone jacks 5 Insulation Checking Procedure Disconnect the power cord from the AC source and turn the power switch ON Connect an insulation resistance meter 500 V to the blades of the AC plug The insulation resistance between each blade of the AC plug and accessible conductive parts see above should be greater than 1 megohm 6 Always connect a test instrument s ground lead to the instrument chassis ground before connecting the positive lead always remove the instrument s ground lead last 6 Do not remove a replacement ESD from its protective package until you are ready to install it Most replacement ESDs are packaged with leads that are electrically shorted together by conductive foam aluminum foil or other conductive materials 7 Immediately before removing the protective material from the leads of a replacement ESD touch the protective material to the chassis or circuit assembly into which the device will be installed Caution Be sure no power is applied to the chassis or circuit and observe all other safety precautions 8 Minimize body motions when handling unpackaged replacement ESDs Motions such as brushing clothes together or lifting your foot from a carpeted floor can generate enough static electricity to damage an ESD 1 Precautions 1 2SyncMaster 800TFT 1 3 Electrostatically Sensitive Devices ESD Precautions Some semiconductor solid state devices can be easily damaged by static electricity Such components are commonly called Electrostatically Sensitive Devices ESD Examples of typical ESD components are integrated circuits and some field effect transistors The following techniques will reduce the incidence of component damage caused by static electricity 1 2 Servicing Precautions WARNING An electrolytic capacitor installed with the wrong polarity may 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 2 Product Specifications 2 1 Specifications LCD PanelTFT LCD panel RGB vertical stripe normally white transmissive 18 Inch viewable 0 28 mm pixel pitch Scanning FrequencyHorizontal 30 kHz to 81 kHz Automatic Vertical 56 Hz to 85 Hz XGA 76 Hz SXGA Display Colors16 7 Million colors Maximum Resolution Horizontal 1280 Pixels 81 kHz Vertical 1024 Pixels 76 Hz Input Video SignalAnalog 0 714 Vp p 5 positive at 75 internally terminated Input Sync SignalType Seperate H V sync Composite H V Sync on Green Level TTL level V high 2 0 V V low 0 8 V Sync on Green 0 25 V Maximum Pixel Clock rate135 MHz Active Display359 3 mm Horizontal Vertical287 2 3 mm AC power voltage never use metal instruments to pry apart the cabinet 3 2 Reassembly Reassembly procedures are in the reverse order of Disassembly procedures Memo 3 Disassembly and Reassembly 3 2SyncMaster 800TFT SyncMaster 800TFT4 1 4 Alignments and Adjustments This section of the service manual explains how to use the DDC JIG to adjust the black red green and blue levels of the FPD when you replace the AD Board and how to update the microprocessor when you change the Panel or Lamp s 4 1 Required Equipment The following equipment is necessary for adjusting the monitor Oscilloscope with probe tool Computer with Windows 95 Windows 98 or Windows NT DV18AS exe software DDC Control JIG 4 2 Using the DDC Control JIG After replacing the LCD Panel Lamp s and or AD Board use the DDC Control JIG to complete your service Attach the DDC Control JIG to the flat panel display FPD as shown in the diagrams below MONITOR INTERFACE BOARD VER 2 0 PC SIGNAL GENERATOR 3 WIRE CABLE SIGNAL CABLE 5V DC ADAPTOR PARALLEL CABLE Figure 4 1 Setup 1 With Signal Generator MONITOR INTERFACE BOARD VER 2 0 PC 3 WIRE CABLE SIGNAL CABLE PARALLEL CABLE D SUB CONNECTOR 5V DC ADAPTOR Figure 4 2 Setup 2 Without Signal Generator RRR 4 2 1 Main Menu 4 2 1 a Service JIG DV18 4 2 2 Sub Menu 4 2 2 a Panel Information NoLabelDefinitionNoLabelDefinition 4 Alignments and Adjustments 4 2SyncMaster 800TFT Monitor On TimeTotal hours that the monitor has been actively functioning Panel CycleThe total number of times the Panel has been turned ON TimeTotal in Hours that this Panel or Lamp has been ON Reset this number to 000000 after replacing the part PanelTotal number of hours that this Panel has been ON Lamp UpperTotal number of hours that this Upper Lamp has been ON Lamp LowerTotal number of hours that this Lower Lamp has been ON Change No The number of times this Panel or Lamp has been replaced The numbers are 00 if the item is the original factory part installed during manufacture of this monitor PanelReplacement times This value is 00 if original equipment Lamp UpperReplacement times This value is 00 if original equipment Lamp LowerReplacement times This value is 00 if original equipment MessageShows the message Read Reads all Panel information data from the AD Board Write Writes the Panel Parameter Control values to the AD Board Read bufferReload the Panel Parameter Control values from the Program buffer Return MainReturns to the Main menu Figure 4 4 Control JIG Menu Red max valueShows the red video signal max value Green max valueShows the green video signal max value Blue max valueShows the blue video signal max value Red min valueShows the red video signal min value Green min valueShows the green video signal min value Blue min valueShows the blue video signal min value Color Automatical screen contrast setting Auto Adjustment Red gain controlAdjusts the red video signal gain control Green gain controlAdjusts the green video signal gain control Blue gain controlAdjusts the blue video signal gain control Red cutoff controlAdjusts the red video signal cutoff control Green cutoff control Adjusts the green video signal cutoff control Blue cutoff controlAdjusts the blue video signal cutoff control Panel informationShows the sub menu to panel information 4 2 2 a Scroll barChanges the value or level of the selected item The window to the right shows the value as it changes SAVESaves the current adjustment value of the R G B video contrast gain and cutoff level SettingDisplays and allows you to adjust the PC and Control JIG communication environment Use this button to change the Delay parameter and Port Address of your PC system and to test the connection between the Control JIG and your computer ExitQuits the DDC Control JIG Figure 4 3 Service JIG Menu 123456 7 891011121314 15 161718 a b d e f k cg h i j n o l m 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 a b c d e f g h i j k l m n o 4 2 3 Adjustment Procedures Use the following procedures whenever you replace the AD Board Panel or one or both of the Lamps 4 2 3 a When Replacing the AD Board 1 Before replacing the AD Board read all Panel information data by using the Read button on the DDC Control JIG 2 Remove the old AD Board and replace it with a new board 3 Perform the procedures described in section 4 2 3 b 4 Write the Panel information data to the new AD Board by using the Write button 5 Perform other procedures using the DDC Control JIG if necessary 6 When all procedures are complete select the Exit button to quit the DDC Control JIG software 4 2 3 b Color Auto Adjustment 1 After displaying 16 Gray pattern or black and white mixed pattern click Color Auto Adjustment button 2 During normal execution of Auto Algorithm the screen image may flicker If Auto Algorithm does not excute properly check DDC Control JIG 3 After normal execution of Auto Algorithm confirm optimal settings by observing the contrast of several different patterns on the display 4 If you want to check each color value click the button from to and from to 4 2 3 c When Replacing the Panel 1 Select the Read Buffer button to gather the current information about this monitor 2 Increment the number by clicking on the button on the Panel row in the Change No column If they were not already 00 the numbers for the Upper and Lower Lamps will automatically change to 00 3 Check all values If there is an error select Read Buffer again and increment the Change No column to the correct number When all values are correct select the Write button to record the data in the firmware 4 Select the Return Menu button to Return Main Menu 4 2 3 d When Replacing the Upper and or Lower Lamp 1 Select the Read Buffer button to gather current information about this monitor 2 Increment the number by clicking on the button on the Lamp Upper and or Lamp Lower row in the Change No column 3 Check all values If there is an error select Read Buffer again and increment the Change No column to the correct number s When all values are correct select the Write button to record the data in the firmware 4 Select the Return Menu button to Return Main Menu 4 Alignments and Adjustments SyncMaster 800TFT4 3 16813 18 n o m n m o 1 To display the Service Function OSD push and hold in for 8 seconds the Left and Right arrow buttons on the front panel of the monitor 2 If the Panel has been replaced during this servicing use the Up or Down arrow button on the front panel to highlight the Panel row on the table Increment the Change No value by pushing and holding in for 8 seconds the Left and Right arrow buttons on the front panel Incrementing the Panel value automatically changes both the Upper and Lower Lamp Change No value to 00 If you have changed the Upper and or Lower Lamp s without changing the Panel highlight the appropriate row s then push and hold in for 5 seconds both the Left and Right arrow buttons on the front panel This action increments the Change No value s Note Increment the Lamp value s only if one or both of them were replaced but the Lamp was not replaced 3 After incrementing the appropriate values power off the monitor 4 Alignments and Adjustments 4 4SyncMaster 800TFT 4 3 Using the OSD Service function After replacement of the LCD Panel or Lamp s use the 800TFT s OSD Service Function to complete your service Monitor On Time Panel Cycle Panel Lamp Upper Lamp Lower 000049Hr Service Function 000088 000050Hr00 000050Hr00 000050Hr00 Time Change No Figure 4 5 Service Function Menu Screen 4 Alignments and Adjustments SyncMaster 800TFT4 5 SyncMaster 800TFT5 1 5 Troubleshooting Notes 1 Before troubleshooting set up the PC s display as below Resolution 1280 x 1024 H frequency 64 kHz V frequency 60 Hz 2 If no picture appears confirm the power cord is correctly connected 3 Check the following circuits No raster appears Stand PCB Main PCB 14V develop but no screen Main PCB 14V does not develop Main PCB 4 If you push and hold the EXIT button for more than 5 seconds the monitor automatically reverts back to the factory preset 5 1 No Power Does proper DC 14 V appear at DC jack connected to CN101 Check Power Adaptor Yes No Does proper DC 5 V appear at Pin 4 of IC101 Check IC101 and related circuit Check Q103 Q105 and Q106 Yes No Does proper 5 V signal appear at Pin 42 of IC501 SW REG EN Check IC501 and related circuit CN102 Function Key Yes No 5 Troubleshooting 5 2SyncMaster 800TFT 5 2 No Video Check signal cable and connection Check TFT LCD panel and Inverter Check IC201 and related circuit Does the outpus signal appear at RA403 and R411 of IC406 LDTGB LVSYNCB LHSYNCB LCKBB Is the output of Pins 1 17 of IC501 High Yes No Yes No Does the analog video signal appear at R211 R212 R215 BLUE GREEN RED IC201 Yes Check IC201 IC206 and related circuit Does the sync signal appear at the output of Pin 14 of IC201and Pin 3 of IC 206 V SYNC H V SYNC Yes No Check the related circuit for these ports No Check IC501 and related circuit No Check IC501 and related circuit No Check IC 300 and related circuit No Does the input signal appear at the Pins 40 41 of IC 300 PLL H V MX PDEN Yes During power on off does the input signal appear at the Pin 29 30 of IC300 AD SDA AD SCL Do the clock and sync signal appear at Pin 115 117 of IC 300 DCLKAB MX HSYNC and does the digital video signal appear at thr output port PDA PDB Yes During power on off dose the input signal appear at the R 407 and R 408 MX SDA MX SCL Yes 78 910 Check IC 406 and related circuit Yes 1234 56 No Check IC501 and related circuit 5 Troubleshooting SyncMaster 800TFT5 3 WAVEFORMS 4 CH1 RMS 2 20V 5 CH1 RMS 4 96V 6 CH1 RMS 4 42V 8 CH1 RMS 3 24V 9 CH1 RMS 2 50V 2 CH1 RMS 3 25V 3 CH1 RMS 3 12V 7 CH1 RMS 3 20V 10 CH1 RMS 960mV 1 CH1 RMS 3 26V 5 Troubleshooting 5 4SyncMaster 800TFT Replace IC404 Yes No There is video but no OSD 5 3 No OSD While pushing a front control button does any pulse appear at Pin 12 of IC404 WAVEFORMS Does input signal appear at the Pins 2 5 and 10 of IC404 Check IC405 and related circuit Check IC404 and related circuit Yes No 11 12 13 11 CH1 RMS 4 18V 13 CH1 RMS 3 26V 12 CH1 RMS 3 26V SyncMaster 800TFT6 1 6 Exploded View and Parts List 6 Exploded View Parts List 6 2SyncMaster 800TFT Memo C1012402 000176C AL SMD10uF 20 16V GP TP 4 3x4 3x5 4 C1022203 000257C CERAMIC CHIP10nF 10 50V X7R TP 1608 C1032203 000257C CERAMIC CHIP10nF 10 50V X7R TP 1608 C1042402 001044C AL SMD100uF 20 25V TP 8 3x8 3x6 3 C1052404 001075C TA CHIP100uF 20 16V GP TP 7343 C1062203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1072203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1082404 001075C TA CHIP100uF 20 16V GP TP 7343 C1092409 000124C ORGANIC100uF 10 16V LZ BK 8x10 5 C1102203 000257C CERAMIC CHIP10nF 10 50V X7R TP 1608 C1112203 000257C CERAMIC CHIP10nF 10 50V X7R TP 1608 C1182203 000257C CERAMIC CHIP10nF 10 50V X7R TP 1608 C1192203 000257C CERAMIC CHIP10nF 10 50V X7R TP 1608 C1202402 001044C AL SMD100uF 20 25V TP 8 3x8 3x6 3 C1212404 001075C TA CHIP100uF 20 16V GP TP 7343 C1222402 001042C AL SMD100uF 20 16V GP TP 6 6x6 6x5 C1232203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1242402 001042C AL SMD100uF 20 16V GP TP 6 6x6 6x5 C1252203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1262203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1272203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1282203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1292203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1302203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C1312203 005005C CERAMIC CHIP100nF 15 16V W5R TP 1608 1 6m C13