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1、COLOR MONITORDP15HS/HTDP17LS/LTManualSERVICECOLOR MONITORCONTENTSEXITEXITMENU1.Precautions2.Product Specifications3.Disassembly&Reassembly4.Alignment&Adjustments5.Troubleshooting6.Exploded View&Parts List7.Electrical Parts List8.Block Diagram9.Wiring Diagram10.Schematic Diagramsh t t p:/j d w x z l
2、w.c o m/?f r o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料Samsung Electronics Co.,Ltd.May 1999Printed in KoreaCode No.:BH68-00129Ah t t p:/j d w x z l w.c o m/?f r o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料Copyright 1999 by Samsung Electronics Co.,Ltd.All rights reserved.This manual may not,in whole or in part,becopie
3、d,photocopied,reproduced,translated,orconverted to any electronic or machine readableform without prior written permission ofSamsung Electronics Co.,Ltd.DP15H*/DP17L*Service ManualFirst edition May 1999.Printed in Korea.TrademarksSamsung is a registered trademark andDP15H*/DP17L*and MacMaster Cable
4、Adapterare trademarks of Samsung Electronics Co.,Ltd.Macintosh,Centris,Quadra,Duo Dock,andPower Macintosh are trademarks of AppleComputer,Inc.All other trademarks are the property of theirrespective owners.iiDP15H*/DP17L*h t t p:/j d w x z l w.c o m/?f r o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料WARNINGS1.F
5、or continued safety,do not attempt to modify thecircuit board.2.Disconnect the AC power before servicing.3.When the chassis is operating,semiconductorheatsinks are potential shock hazards.1-1-1Servicing the High Voltage VR and CRT:WARNING:A high voltage VR replaced in the wrongdirection may cause ex
6、cessive X-rayemissions.Caution:When replacing the high voltageadjustment VR,it must be fixed by asoldering iron after it is properly set.1.When servicing the high voltage system,removethe static charge by connecting a 10 kohm resistorin series with an insulated wire(such as a testprobe)between the c
7、hassis and the anode lead.2.If the HV VR requires adjustment,(a)Replace theVR and adjust the high voltage to the specification.(b)Use a soldering iron to melt the adjustment capon the HV VR to prevent any movement.3.When troubleshooting a monitor with excessivelyHV,avoid being unnecessarily close to
8、 the monitor.Do not operate the monitor for longer than isnecessary to locate the cause of excessive voltage.4.High voltage should always be kept at the ratedvalue,no higher.Only when high voltage isexcessive are X-rays capable of penetrating the shellof the CRT,including the lead in glass material.
9、Operation at high voltages may also cause failure ofthe CRT or high voltage circuitry.5.When the HV regulator is operating properly,thereis no possibility of an X-ray problem.Make sure theHV does not exceed its specified value and that it isregulating correctly.6.The CRT is especially designed to pr
10、ohibit X-ray emissions.To ensure continued X-rayprotection,replace the CRT only with one that isthe same or equivalent type as the original.7.Handle the CRT only when wearing shatterproofgoggles and after completely discharging the highvoltage anode.8.Do not lift the CRT by the neck.1-1-2Fire and Sh
11、ock Hazard:Before returning the monitor to the user,perform thefollowing safety checks:1.Inspect each lead dress to make certain that theleads are not pinched or that hardware is notlodged between the chassis and other metal parts inthe monitor.2.Inspect all protective devices such as nonmetalliccon
12、trol knobs,insulating materials,cabinet backs,adjustment and compartment covers or shields,isolation resistor-capacitor networks,mechanicalinsulators,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 sy
13、stemthat complies with American National StandardsInstitute(ANSI C101.1,Leakage Current forAppliances),and Underwriters Laboratories(ULPublication UL1410,59.7).4.With the unit completely reassembled,plug the ACline cord directly into a 120V AC outlet.With theunits AC switch first in the ON position
14、and thenOFF,measure the current between a known earthground(metal water pipe,conduit,etc.)and allexposed metal parts,including:metal cabinets,screwheads and control shafts.The currentmeasured should not exceed 0.5 milliamp.Reversethe power-plug prongs in the AC outlet and repeatthe test.Figure 1-1.L
15、eakage Current Test Circuit1-1-4 Product Safety NoticesSome electrical and mechanical parts have specialsafety-related characteristics which are often notevident from visual inspection.The protection they givemay not be obtained by replacing them withcomponents rated for higher voltage,wattage,etc.P
16、artsthat have special safety characteristics are identified by on schematics and parts lists.A substitutereplacement that does not have the same safetycharacteristics as the recommended replacement partmight create shock,fire and/or other hazards.Productsafety is under review continuously and newins
17、tructions are issued whenever appropriate.Components identified by on schematics and partslists must be sealed by a soldering iron afterreplacement and adjustment.DP15H*/DP17L*1-11 Precautions1-1 Safety Precautions!DEVICEUNDERTESTTEST ALLEXPOSED METALSURFACES(READING SHOULDNOT BE ABOVE 0.5mA)LEAKAGE
18、CURRENTTESTER2-WIRE CORDALSO TEST WITHPLUG REVERSED(USING AC ADAPTERPLUG AS REQUIRED)EARTHGROUNDh t t p:/j d w x z l w.c o m/?f r o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料1.Servicing precautions are printed on the cabinet,and should be followed closely.2.Always unplug the units AC power cord from theAC pow
19、er source before attempting to:(a)removeor reinstall any component or assembly,(b)disconnect PCB plugs or connectors,(c)connect alltest components in parallel with an electrolyticcapacitor.3.Some components are raised above the printedcircuit board for safety.An insulation tube or tapeis sometimes u
20、sed.The internal wiring issometimes clamped to prevent contact withthermally hot components.Reinstall all suchelements to their original position.4.After servicing,always check that the screws,components and wiring have been correctlyreinstalled.Make sure that the area around theserviced part has no
21、t been damaged.1.Immediately before handling any semiconductorcomponents or assemblies,drain the electrostaticcharge from your body by touching a known earthground.Alternatively,wear a discharging wrist-strap device.To avoid a shock hazard,be sure toremove the wrist strap before applying power tothe
22、 monitor.2.After removing an ESD-equipped assembly,place iton a conductive surface such as aluminum foil toprevent accumulation of an electrostatic charge.3.Do not use freon-propelled chemicals.These cangenerate electrical charges sufficient to damageESDs.4.Use only a grounded-tip soldering iron to
23、solder ordesolder ESDs.5.Use only an anti-static solder removal device.Somesolder removal devices not classified as anti-staticcan generate electrical charges sufficient to damageESDs.5.Check the insulation between the blades of the ACplug and accessible conductive parts(examples:metal panels,input
24、terminals and earphone jacks).6.Insulation Checking Procedure:Disconnect thepower cord from the AC source and turn the powerswitch ON.Connect an insulation resistance meter(500 V)to the blades of the AC plug.The insulation resistance between each blade of theAC plug and accessible conductive parts(s
25、eeabove)should be greater than 1 megohm.7.Never defeat any of the+B voltage interlocks.Donot apply AC power to the unit(or any of itsassemblies)unless all solid-state heat sinks arecorrectly installed.8.Always connect a test instruments ground lead tothe instrument chassis ground before connecting t
26、hepositive lead;always remove the instrumentsground lead last.6.Do not remove a replacement ESD from itsprotective package until you are ready to install it.Most replacement ESDs are packaged with leadsthat are electrically shorted together by conductivefoam,aluminum foil or other conductive materia
27、ls.7.Immediately before removing the protectivematerial from the leads of a replacement ESD,touch the protective material to the chassis orcircuit assembly into which the device will beinstalled.Caution:Be sure no power is applied to the chassis or circuit and observe all other safety precautions.8.
28、Minimize body motions when handlingunpackaged replacement ESDs.Motions such asbrushing clothes together,or lifting your foot froma carpeted floor can generate enough staticelectricity to damage an ESD.9.Indicates ESDs on the Schematic Diagram inthis manual.1 Precautions1-2DP15H*/DP17L*1-3 Electrosta
29、tically Sensitive Devices(ESD)PrecautionsSome semiconductor(solid state)devices can be easily damaged by static electricity.Such components are commonlycalled Electrostatically Sensitive Devices(ESD).Examples of typical ESD devices are integrated circuits and some field-effect transistors.The follow
30、ing techniques will reduce the incidence of component damage caused by static electricity.1-2 Servicing PrecautionsWARNING1:First read the“Safety Precautions”section of this manual.If unforeseen circumstancescreate conflict between the servicing precautions and safety precautions,alwaysfollow the sa
31、fety precautions.WARNING2:A high voltage VR replaced in the wrong direction may cause excessive X-rayemissions.WARNING3:An electrolytic capacitor installed with the wrong polarity might explode.h t t p:/j d w x z l w.c o m/?f r o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料DP15H*/DP17L*2-12 Product Specificatio
32、ns2-1 SpecificationsPicture Tube:15-Inch(38 cm):13.8-inch(35 cm)viewable,17-Inch(43 cm):16-inch(40.6 cm)viewable,Full-square flat-face tube,90 Deflection,Semi-tint,Non-glare,Invar shadow mask,Anti-static silica coating,0.28 mm Dot pitchScanning FrequencyHorizontal:30 kHz to 70 kHz(Automatic)Vertical
33、:50 Hz to 160 Hz(Automatic)Display ColorsUnlimited colors Maximum Resolution Horizontal:1280 Dots Vertical:1024 Lines Input Video SignalAnalog,0.7 Vp-p positive at 75,internally terminated Input Sync SignalSeparate Sync:TTL level positive/negativeMaximum Pixel Clock rate110 MHzActive Display15”;Hori
34、zontal:267 mm 4 mm,Vertical:200.5 mm 4 mm17”;Horizontal:306 mm 4 mm(4:3 ratio),Vertical:230.5 mm 4 mmInput VoltageAC 90 to 264 Volts,60 Hz or 50 Hz 3 HzPower Consumption80 Watt(max):15”,90 Watt(max):17”DimensionsUnit;15”:14.25 x 15.11 x 15.11 Inches(362 x 384 x 384 mm)(W x D x H)17”:16.22 x 16.54 x
35、16.36 Inches(412 x 420 x 415.5 mm)Carton;15”:17.87 x 19.57 x 17.52 Inches(454 x 497 x 445 mm)17”:21.02 x 21.73 x 18.39 Inches(534 x 552 x 467 mm)Weight 15”:26.5 lbs(12.0 kg)/31.5 lbs(14.3 kg)(Net/Gross)17”:33.1 lbs(15.0 kg)/38.6 lbs(17.5 kg)Environmental ConsiderationsOperating Temperature:32F to 10
36、4F(0C to 40C)Humidity:10%to 80%Storage Temperature:-4F to 113F(-20C to 45C)Humidity:5%to 95%Above models comply with SWEDAC(MPR II)recommendations for reduced electromagnetic fields.Designs and specifications are subject to change without prior notice.ItemDescriptionh t t p:/j d w x z l w.c o m/?f r
37、 o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料2 Product Specifications2-2DP15H*/DP17L*2-2 Pin Assignments515Figure 2-1.Male TypeFigure 2-2.Male TypeSyncTypePin No.MacintoshSeparate123456789101112131415RedGreenBlueN-CDDC ReturnGND-RGND-GGND-BN-CGND-Sync/Self-rasterN-CDDC DataH-SyncV-SyncDDC ClockGND-RRedH/V Syn
38、cSense 0GreenGND-GSense 1ReservedBlueSense 2GNDV-SyncGND-BGNDH-Synch t t p:/j d w x z l w.c o m/?f r o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料2 Product SpecificationsDP15H*/DP17L*2-3QRSPOVideoSyncSyncHorizontalVerticalCDEPOBAVideoSyncSyncSeparate Sync2-3 Timing ChartThis section of the service manual descr
39、ibes the timing that the computer industry recognizes as standardfor computer-generated video signals.CDAOEBPVideoSyncSyncVideoQRSA:Line time totalB:Horizontal sync widthO:Frame time totalP:Vertical sync widthC:Back porchD:Active timeQ:Back porchR:Active timeE:Front porchS:Front porchfH(kHz)A secB s
40、ecC secD secE secfV(Hz)O msecP msecQ msecR msecS msecClockFrequency(MHz)PolarityH.SyncV.SyncRemarkIBMVESA800/85 Hz800 x 6001024/75 Hz1024 x 7681024/85 Hz1024 x 768VGA3/60 Hz640 x 480VGA2/70 Hz720 x 40031.46931.7773.8131.90725.4220.63670.08714.2680.0641.08012.7110.41328.322NegativePositiveSeparate31.
41、46931.7783.8131.90725.4220.63659.94016.6830.0641.04815.2530.31825.175NegativeNegativeSeparate37.50026.6672.0323.81020.3170.50875.00013.3330.0800.42712.8000.02731.500NegativeNegativeSeparate43.26923.1111.5562.22217.7781.55685.00811.7640.6710.57811.0930.02349.500NegativeNegativeSeparate46.87521.3331.6
42、163.23216.1620.32375.00013.3330.0640.44812.8000.02136.000PositivePositiveSeparate53.67418.6311.1382.70214.2220.56985.06111.7560.0560.50311.1790.01956.250PositivePositiveSeparate60.02316.6601.2192.23513.0030.20375.02913.3280.0500.46612.7950.01778.750PositivePositiveSeparate68.67714.5611.0162.20110.83
43、60.50884.99711.7650.0440.52411.1830.01594.500PositivePositiveSeparate800/75 Hz800 x 600640/75 Hz640 x 480640/85 Hz640 x 480Table 2-1.Timing ChartModeTimingh t t p:/j d w x z l w.c o m/?f r o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料2 Product Specifications2-4DP15H*/DP17L*Memoh t t p:/j d w x z l w.c o m/?f r
44、 o m u s e r=华盛维修家电维修资料网，免费下载各种维修资料4-1-1 Before Making Adjustments4-1-1(a)ORIENTATIONWhen servicing,always face the monitor to theeast.4-1-1(b)MAGNETIC FIELDSWhenever possible,use magnetic field isolationequipment such as a Helmholtz field to surroundthe monitor.If a Helmholtz field is not available
45、,frequently degauss the unit under test.Caution:Other electrical equipment may causeexternal magnetic fields which mayinterfere with monitor performance.Use an external degaussing coil to limit magneticbuild up on the monitor.If an external degaussingcoil is not available,use the internal degaussing
46、circuit.However,do not use the internaldegaussing circuit more than once per 30 minutes.4-1-1(c)WARM-UP TIMEThe monitor must be on for 30 minutes beforestarting alignment.Warm-up time is especiallycritical in color temperature and white balanceadjustments.4-1-1(d)SIGNALAnalog,0.7 Vp-p positive at 75
47、 ohm,internalterminationSync:Separate(TTL level negative/positive)4-1-1(e)SCANNING FREQUENCYHorizontal:30 kHz to 70 kHz(Automatic)Vertical:50 Hz to 160 Hz(Automatic)Unless otherwise specified,adjust at the 17:1024 x 768 mode(68 kHz/85 Hz),15:800 x 600 mode(54 kHz/85 Hz)signals.Refer to Table 2-1 on
48、page 2-3.4-1-2 Required EquipmentThe following equipment may be necessary foradjustment procedures:4-1-2(a)DISPLAY CONTROL ADJUSTMENT1.Non-metallic()screwdriver:1.5,2.5,3 mm2.Non-metallic(+)screwdriver:1.5,2.5,3 mm3.Digital Multimeter(DMM),orDigital Voltmeter4.Signal generator,orDM200 software5.Soft
49、ware:Softjig or DM2006.Interface Board Ver.2.0 Code No.BH81-90001K7.Parallel communications cable(25-pin to 25-pin);Code No.BH81-90001H8.Signal cable(15-pin to 15-pin cable withadditional 3-pin connector);Code No.BH81-90001J9.5 V DC adapter,not supplied10.Personal computerNote:Softjig Assy(includes
50、items 6,7 and 9)Code No.BH81-90001L4-1-2(b)COLOR ADJUSTMENTS1.All equipment listed in 4-1-2(a),above2.Color analyzer,or any luminancemeasurement equipmentDP15H*/DP17L*4-14 Alignment and AdjustmentsThis section of the service manual explains how to make permanent adjustments to the monitor.Directions