PlasmaTV
ChassisF82A
ModelCodePS43D450A2WXZG
MANUAL
SERVICE
PlasmaTV
PS43D450A2W
RefertotheservicemanualintheGSPN(seetherearcover)formoreinformation.
1.Precaution
DEVICE
UNDER
TEST
LEAKAGE
CURREN T
TESTER
TES T ALL
EXPOSED ME TAL
SUR FACES
2-WIRE CORD
ALSO TES T WITH
PLUG REVERSED
(USING AC
ADAPTER PLUG
AS REQU IRED)
EARTH
GRO UND
( R E A D I N G
SHOULD NOT BE
ABOVE 0.5mA)
1.Precaution
Toavoidpossibledamage,electricshocksorexposuretoradiation,followtheinstructionsbelowwithregardtosafety ,
installation,serviceandESD.
1.1.SafetyPrecautions
1)Makesureallprotectivedevicesareproperlyinstalledincludingnon-metallichandlesandcompartmentcoverswhen
installingorre-installingthechassisorchassisassemblies.
2)Makesurethatnogapsexistbetweenthecabinetsforchildrentoinserttheirngersintopreventchildrenfrom
receivingelectricshocks.GapsmentionedaboveincludeventilationholesofatoogreatmagnitudebetweenthePDP
moduleandthecabinetmask,andtheimproperinstallationoftherearcabinet.
Errorsmayoccurwhentheresistanceisbelow1.0MΩorover5.2MΩ.Inthesecases,makesurethatthedeviceis
repairedbeforesendingitbacktothecustomer.
3)CheckforElectricityLeakage(ACLeakageTest)
WARNING
Donotuseaninsulatedtransformerforcheckingtheleakage.Useonlythosecurrentleakagetestersormirroring
systemsthatcomplywithANSIC101.1andtheUnderwriterLaboratory’sspecications(UL1410,59.7).
Figure1.1ACLeakageT est
4)Ahighvoltageismaintainedwithinthespeciedlimitsusingsafetyparts,calibrationandtolerances.Whenvoltage
exceedsthespeciedlimits,checkeachspecialpart.
5)W arningforEngineeringChanges:
Nevermakeanychangesoradditionstothecircuitdesignortheinternalpartforthisproduct.
Ex:Donotaddanyaudioorvideoaccessoryconnectors.Thismightcausephysicaldamage.
Furthermore,anychangesoradditionstotheoriginaldesign/engineeringwillinvalidatethewarranty.
6)W arning-HotChassis:
SomeTVchassisaredirectlyconnectedtooneendoftheACpowercordforelectricalreasons.Withoutinsulated
transformers,theproductcanonlyberepairedsafelywhenthechassisisconnectedtotheearthedendoftheAC
powersource.
TomakesuretheACpowercordisproperlyconnected,followtheinstructionsbelow.Usethevoltmetertomeasurethe
voltagebetweenthechassisandtheearthedground.Ifthemeasurementisover1.0V ,unplugtheACpowercordand
changethepolaritybeforereinsertingit.Measurethevoltagebetweenthechassisandthegroundagain.
Copyright©1995-2011SAMSUNG.Allrightsreserved.1-1
1.Precaution
7)SomeTVchassisareshippedwithanadditionalsecondarygroundingsystem.Thesecondarysystemisadjacentto
theACpowerline.Thesetwogroundingsystemsareseparatedinthecircuitusinganunbreakable/unchangeable
insulationmaterial.
8)Whenanyparts,materialorwiringappearoverheatedordamaged,replacethemwithnewregularonesimmediately.
Whenanydamageoroverheatingisdetected,correctthisimmediatelyandmakearegularcheckofpossibleerrors.
9)Checkfortheoriginalshapeofthelead,especiallythatoftheantennawiring,anysharpedges,theACpowerandthe
highvoltagepower.Carefullycheckifthewiringistootight,incorrectlyplacedorloose.Neverchangethespace
betweenthepartandtheprintedcircuitboard.ChecktheACpowercordforpossibledamages.Keepthepartorthe
leadawayfromanyheat-emittingmaterials.
10)SafetyIndication:
Someelectricalcircuitsordevicerelatedmaterialsrequirespecialattentiontotheirsafetyfeatures,whichcannotbe
viewedbythenakedeye.Ifanoriginalpartisreplacedwithanotherirregularone,thesafetyorprotectivefeatureswill
belostevenifthenewonehasahighervoltageormorewatts.
Criticalsafetypartsshouldbebracketedwith(
,).Useonlyregularpartsforreplacements(inparticular,ame
resistanceanddielectricstrengthspecications).Irregularpartsormaterialsmaycauseelectricshockorre.
1-2Copyright©1995-2011SAMSUNG.Allrightsreserved.
1.2.ServicingPrecautions
WARNING
1)Firstcarefullyreadthe“SafetyInstruction”inthisservicemanual.
Whenthereisaconictbetweentheserviceandthesafetyinstructions,followthesafetyinstructionatalltimes.
2)Anyelectrolyticcapacitorwiththewrongpolaritywillexplode.
1)Theserviceinstructionsareprintedonthecabinet,andshouldbefollowedbyanyservicepersonnel.
2)MakesuretounplugtheACpowercordfromthepowersourcebeforestartinganyrepairs.
a)Removeorre-installpartsorassemblies.
b)Disconnecttheelectricplugorconnector,ifany .
c)Connectthetestpartinparallelwiththeelectrolyticcapacitor.
3)Somepartsareplacedatahigherpositionthantheprintedboard.Insulatedtubesortapesareusedforthispurpose.
Theinternalwiringisclampedusingbucklestoavoidcontactwithheatemittingparts.Thesepartsareinstalledback
totheiroriginalposition.
4)Aftertherepair,makesuretocheckifthescrews,partsorcablesareproperlyinstalled.Makesurenodamageiscaused
totherepairedpartanditssurroundings.
1.Precaution
5)CheckforinsulationbetweenthebladeoftheACplugandthatofanyconductivematerials(i.e.themetalpanel,
inputterminal,earphonejack,etc).
6)InsulationCheckProcess:
UnplugthepowercordfromtheACsourceandturntheswitchon.Connecttheinsulatingresistancemeter(500V)to
theACplugblade.TheinsulatingresistancebetweenthebladeoftheACplugandthatoftheconductivematerial
shouldbemorethan1MΩ.
7)AnyB+interlockshouldnotbedamaged.
Ifthemetalheatsinkisnotproperlyinstalled,noconnectiontotheACpowershouldbemade.
8)Makesurethegroundingleadofthetesterisconnectedtothechassisgroundbeforeconnectingtothepositivelead.
Thegroundleadofthetestershouldberemovedlast.
9)Bewareofrisksofanycurrentleakagecomingintocontactwiththehigh-capacitycapacitor.
10)Thesharpedgesofthemetalmaterialmaycausephysicaldamage,soprotectyourselfbywearingglovesduringthe
repair.
11)Duetothenatureofplasmadisplaypanels,partialafter-imagesmayappearifastillpictureisdisplayedonthescreen
foralongperiodoftime.
Thisiscausedbybrightnessdeteriorationduetothestorageeffectofthepanel,andtopreventthisfromhappening,we
recommendthatthebrightnessandcontrastarereduced.(e.g.)Contrast:25,Brightness:50
Copyright©1995-2011SAMSUNG.Allrightsreserved.1-3
1.Precaution
1.3.StaticElectricityPrecautions
1)Somesemi-conductive(“solidstate”)devicesarevulnerabletostaticelectricity .ThesedevicesareknownasESD.
ESDincludestheintegratedcircuitandtheeldeffecttransistor.Toavoidanymaterialsdamagefromelectrostatic
shock,followtheinstructionsdescribedbelow.
2)Removeanystaticelectricityfromyourbodybyconnectingtheearthgroundbeforehandlinganysemi-conductiveparts
orassemblies.Alternatively ,wearadischargeablewrist-belt.
(Makesuretoremoveanystaticelectricitybeforeconnectingthepowersource-thisisasafetyinstructionfor
avoidingelectricshock)
3)RemovetheESDassemblyandplaceitonaconductivesurfacesuchasaluminumfoiltopreventaccumulatingstatic
electricity.
4)DonotuseanyFreon-basedchemicals.SuchchemicalswillgeneratestaticelectricitythatcausesdamagetotheESD.
5)Useonlygrounded-tipironsforsolderingpurposes.
6)Useonlyanti-staticsolderremovaldevices.
Mostsolderremovaldevicesdonotsupportananti-staticfeature.Asolderremovaldevicewithoutananti-staticfeature
canstoreenoughstaticelectricitytocausedamagetotheESD.
7)DonotremovetheESDfromtheprotectiveboxuntilthereplacementisready.MostESDreplacementsarecoveredwith
lead,whichwillcauseashorttotheentireunitduetotheconductivefoam,aluminumfoilorotherconductivematerials.
8)RemovetheprotectivematerialfromtheESDreplacementleadimmediatelyafterconnectingittothechassisor
circuitassembly.
9)T akeextremecautioninhandlinganyuncoveredESDreplacements.Actionssuchasbrushingclothesorliftingyourleg
fromthecarpetoorcangenerateenoughstaticelectricitytodamagetheESD.
CAUTION
Theseservicinginstructionsareforusebyqualiedservicepersonnelonly.
Toreducetheriskofelectricshockdonotperformanyservicingotherthanthatcontainedintheoperatinginstructions
unlessyouarequaliedtodoso.
1-4Copyright©1995-2011SAMSUNG.Allrightsreserved.
1.4.InstallationPrecautions
1)Forsafetyreasonsaminimumoftwopeoplearerequiredtocarrythisproduct.
2)Keepthepowercordawayfromanyheatemittingdevices,asameltedcoveringmaycausereorelectricshock.
3)Donotplacetheproductinareaswithpoorventilationsuchasabookshelforcloset.Theincreasedinternaltemperature
maycausere.
1.Precaution
4)Bendtheexternalantennacablewhenconnectingittotheproduct.Thisisameasuretoprotectitfrombeingexposedto
moisture.Otherwise,itmaycauseareorelectricshock.
5)Makesuretoturnthepoweroffandunplugthepowercordfromtheoutletbeforerepositioningtheproduct.Also
checktheantennacableortheexternalconnectorsiftheyarefullyunplugged.Damagetothecordmaycausere
orelectricshock.
6)Keeptheantennafarawayfromanyhigh-voltagecablesandinstallitrmly.Contactwiththehigh-voltagecableorthe
antennafallingovermaycausereorelectricshock.
7)WhenconnectingtheRFantenna,checkforaDTVreceivingsystemandinstallaseparateDTVreceptionantennafor
areaswithnoDTVsignal.
8)Wheninstallingtheproduct,leaveenoughspace(4”)betweentheproductandthewallforventilationpurposes.A
riseintemperaturewithintheproductmaycausere.
9)WhenmovingaPDPwithremovablespeakers,detachthespeakersrstbeforemovingthemainbody.MovingthePDP
mainbodywithoutseparatingthespeakersmaycausethespeakerstodetach,possiblycausingdamageorinjury.
Copyright©1995-2011SAMSUNG.Allrightsreserved.1-5
2.ProductSpecication
2.1.ProductFeature
■Features
BlockSpecicationMajorICRemark
2.ProductSpecication
RFDigital/Analog(DTVBuiltIn)
PDPModuleSDIDHMODULE
Power
Video
SoundSRSTruSuroundHD,DolbyDigitalTAS5715OpticalOutput
CabinetC490Design
SAMSUNGELECTROMECHANICS
SMPSDOY ANGSMPS
NTSC3.58A TSC
HDMI
Component,PC
43”HD
51”HD
MSD2248
NewModule
Copyright©1995-2011SAMSUNG.Allrightsreserved.2-1
2.ProductSpecication
■Specication
ModelP*43D4*0P*51D4*0
Dimensions(WxHxD)
Weight
PanelResolution1024x7681360x768
PCResolution1920(H)x1080(V)
ScreenSize43Inches(16:9)51Inches(16:9)
PowerConsumption43HD:200W±10%andLess51HD:280W±10%andLess
AntennaInput
W/W
VideoInput
EU
39.8x27.5x12inches-withstand
39.8x24.5x2.2inches-withoutstand
41.8lbs-withstand
35.2lbs-withoutstand
ANT-AIR/CABLEIN
75Ωunbalanced
COMPONENT1-480i/480p/720p/1080i/1080p
COMPONENT2-480i/480p/720p/1080i/1080p
HDMI1–480p/720p/1080i/1080p
HDMI2(DVICompatible)–480p/720p/1080i/1080p
HDMI3(SIDEA V)–480p/720p/1080i/1080p
480icanbedisplayedonHDMI,howeveritisnotcontainedinEDIDdata.
COMPONENT1-480i/480p/720p/1080i/1080p
SCART-21P ,Sn,BLK
HDMI1–480p/720p/1080i/1080p
HDMI2(DVICompatible)–480p/720p/1080i/1080p
HDMI3(SIDEA V)–480p/720p/1080i/1080p
480icanbedisplayedonHDMI,howeveritisnotcontainedinEDIDdata.
46.7x30.8x12inches-withstand
46.7x27.8x2.2inches-withoutstand
56.2lbs-withstand
49.6lbs-withoutstand
A V
PC
A V
PC
A V
COMPONENT1-480i/480p/720p/1080i/1080p
AudioInput
AudioOutputAUDIO(L/R)
SpeakerOutput10W+10W(40dB+40dB)
NewFeatures3DBuilt-In
2-2Copyright©1995-2011SAMSUNG.Allrightsreserved.
COMPONENT2-480i/480p/720p/1080i/1080p
PC
DVI
2.2.SpecicationsAnalysis
DisplayTypePDPTVPDPTVPDPTV
Built-InT unerOOO
2.ProductSpecication
ModelP*43D4*0P*51D4*0P*42C450*
Design
Basic
Audio
Features
Resolution1024x7681365x7681024x768
PDPModuleDHDHU2P
ScreenSize43inches51inches42inches
Pictureratio16:916:916:9
Brightness1,500Cd/m21,500Cd/m21,500Cd/m2
ContrastRatio10,000:110,000:130,000:1 Picture
PictureEnhacerDNIe(SEMS20)DNIe(SEMS20)DNIe
Equalizer5Band5Band5Band
AutoV olumeControlOOO
SurroundSoundSRSTheaterSoundSRSTheaterSoundSRSTruSurroundHD
SpeakerOutput10W+10W10W+10W10W+10W
PIPOOO
DoubleScreenXXX
CaptionOOO
StillImageXXX
EPGOOO
MycolorControlXXX
EnergySavingOOO
ScreenBurnProtectionOOO
AnynetXXO
Antenna1(Cable/Air)1(Cable/Air)1(Cable/Air)
A VInput1Input1Input1Input
S-VideoXXX
Component
Connections
Etc.Speaker/StandBuilt-inSpeakerBuilt-inSpeakerBuilt-inSpeaker
PC(D-SUB)1Input1Input1Input
DVIXXX
HDMI
USB111
SubWooferXXX
Optical111
W/W2Input2Input2Input
EU1Input1Input1Input
D490–3Input
D450–2Input
D490–3Input
D450–2Input
4Input
Copyright©1995-2011SAMSUNG.Allrightsreserved.2-3
2.ProductSpecication
TIP
O:Supported,X:NotSupported
NOTE
Forthepowersupplyandpowerconsumption,refertothelabelattachedtotheproduct.
2-4Copyright©1995-2011SAMSUNG.Allrightsreserved.
2.3.Accessories
2.3.1.SuppliedAccessories
AccessoriesItemItemcodeRemark
RemoteControlAA59-00484A
Batteries4301-000103
PowerCord3903-000456
Owner`s
Instructions
BN68-03491C
2.ProductSpecication
SamsungService
Center
Cloth-CleanBN63-01798B
FerriteCorefor
PowerCord
3301-002049
Copyright©1995-2011SAMSUNG.Allrightsreserved.2-5
2.ProductSpecication
2.3.2.SoldSeparately
AccessoriesItemItemcodeRemark
RS232Cable-
HDMI-
HDMI-DVI-
Component-
Composite(A V)-
Coaxial(RF)-
VGA-
SamsungServiceCenter
2-6Copyright©1995-2011SAMSUNG.Allrightsreserved.
3.Disassembly&Reassembly
3.1.OverallDisassembly&Reassembly
3.Disassembly&Reassembly
CAUTION
•Besuretoseparatethepowercordbefore
disassemblingtheunit.
•DischargethecapacitorsrstwhenseparatingPCB’s
withhighcapacitycapacitorssuchasSMPS,X
MainBoard,YMainBoard,etc.(Asparkmaybe
generatedbytheelectriccharge,andthereisdanger
ofelectronicshock.)
•Checkthatthecablesareproperlyconnected
referringtothecircuitdiagramwhendisassembling
orassemblingtheunittakingcarenottodamagethe
cables
•TakecarenottoscratchtheGlassFilterinthefront.
•Assembletheboardsinthereverseorderofthe
disassembly.
•Theplasmamustbelayeddownonaatpadded
surfacefordisassemblyandreassembly.
1.Placemonitorfacedownoncushionedtable.Remove
screwsfromtheStand.Removestand.
*Rearviewof43"
<43"PDP>
<43"PDP>
6001–002621:M4*L8
Copyright©1995-2011SAMSUNG.Allrightsreserved.3-1
3.Disassembly&Reassembly
*Rearviewof51"
<51"PDP>
2.Removethescrewsofrear-cover.
*Rearviewof43"
<43"PDP>
6003–001782:M4*L12
6003–000337:M4*L10
<51"PDP>
6001–002621:M4*L8
*Rearviewof51"
<51"PDP>
6003–001782:M4*L12
6003–000337:M4*L10
3-2Copyright©1995-2011SAMSUNG.Allrightsreserved.
3.Disassembly&Reassembly
3.Liftupandremovetherear-cover.
*Rearviewof43"
<43"PDP>
*Rearviewof51"
5.RemovethescrewsofSMPS.RemovetheSMPS.
CAUTION
Alignboardundertabwhenre-installing.
<51"PDP>
4.Removethescrewsofmainboard.
CAUTION
Disconnectallconnectorspriortoremovingboards.
6001–002606:M3*L10
6003–001439:M4*L8
6.Removethespeakers.(R/L)
6001–002606:M3*L10
Copyright©1995-2011SAMSUNG.Allrightsreserved.3-3
3.Disassembly&Reassembly
7.RemovetheCoverBottom.
8.RemovethescrewofBluetoothModule.
NOTE
PD49XSeriesOnly .
6003–001782:M4*L12
6003–000337:M4*L10
10.Removethescrewsofthefront-cover .
*Rearviewof43"
6001–002606:M3*L10
9.RemovethescrewsofBracketStandLink.Liftupthe
StandBracketStandLink.
<43"PDP>
6003–001782:M4*L12
*Rearviewof51"
<51"PDP>
6003–001782:M4*L12
3-4Copyright©1995-2011SAMSUNG.Allrightsreserved.
3.2.MethodforDisassemblyofFunctionAssy
3.Disassembly&Reassembly
1.PutuptheupperLocking,Usescrewdriver.
2.PutupthelowerLocking,Usescrewdriver.
3.RemoveLocking.
4.DetachtheFunctionPBA.
CAUTION
Disconnectallconnectorspriortoremovingboards.
Copyright©1995-2011SAMSUNG.Allrightsreserved.3-5
4.Troubleshooting
4.1.CheckpointsbyErrorMode
4.1.1.FirstChecklistforTroubleshooting
1)Checkthevariouscableconnectionsrst.
•Checktoseeifthereisaburntordamagedcable.
•Checktoseeifthereisadisconnectedorloosecableconnection.
•Checktoseeifthecablesareconnectedaccordingtotheconnectiondiagram.
2)CheckthepowerinputtotheMainBoard.
3)HowtodistinguishiftheproblemiscausedbyMainboardorLogicBoard.
•NoVideo:IftheproblemisNoVideobutLogicBoardisonandIndicationLEDisblinkingrepeatedlyand
fasterthannormalbooting,replacetheT-Conboard.
4.Troubleshooting
•DistortedPicture:Checktheinnerpatterns.
InnerpatternPictureProblem
OKNGMainboard
NGNGMainorL VDScableorLogicBoardorPanel.
•Howtocheckinnerpattern?
a.Factorymode(mute→1→8→2→PoweronwhenTVisin‘stand-bymode’)
b.MovetoSVCmenu.
c.MovetoT estPattern.
d.Checkinnerpatterns.
Copyright©1995-2011SAMSUNG.Allrightsreserved.4-1
4.Troubleshooting
4.1.2.CheckpointsbyErrorMode
■NoPower
•TheLEDsonthefrontpaneldonotworkwhenconnectingthepowercord.
Symptom
MajorChecklist
•TheSMPSrelaydoesnotworkwhenconnectingthepowercord.
•Theunitappearstobedead.
TheSMPSrelayortheLEDsonthefrontpaneldoesnotworkwhenconnectingthepowercordif
thecablesareimproperlyconnectedortheMainBoardorSMPSisnotfunctioning.Inthiscase,
checkthefollowing:
•Checktheinternalcableconnectionstatusinsidetheunit.
•Checkthefusesofeachpart.
•ChecktheoutputvoltagesoftheSMPS.
•ReplacetheMainBoard.
<43"PDP>
<51"PDP>
Diagnostics
4-2Copyright©1995-2011SAMSUNG.Allrightsreserved.
4.Troubleshooting
Yes
Yes
Yes
Yes
P owe r ind ica to r LED is o n ?
Che ck AC p owe r c onn e c tion.
Re p lace the Ma in Bo a rd .
Conn e c t th e ca ble b e twe en
CN801 a nd CN201 c onn e c tor.
Are the SMPS C N801 a nd Ma in C N201
conn e c te d ?
Re p lace Fus e. (F8 01S )
Is th e Fu s e (F801S ) of the S MPS P ower
Input P a rt Open?
Re p lace the S MPS .
SMPS CN80 1
PIN2 : S TB5V
PIN1_ PS ON : Ch e c k to s ee if it is 0 V?
No
No
No
No
CAUTION
MakesuretodisconnectthepowerbeforeworkingontheSMPSboard.
Copyright©1995-2011SAMSUNG.Allrightsreserved.4-3
4.Troubleshooting
■NoVideo
Symptom•Audioisnormalbutnopictureisdisplayedonthescreen.
•TheoutputvoltageoftheMainSMPS.
MajorChecklist
•ThismayhappenwhentheLVDScableconnectingtheMainBoardandthePanelis
disconnected.
Diagnostics
<43"PDP>
<51"PDP>
4-4Copyright©1995-2011SAMSUNG.Allrightsreserved.
4.Troubleshooting
Ye s
Ye s
Ye s
Re p lace the Ma in Bo a rd .
Che ck / R e p lace the LVDS Ca ble.
Che ck the LVDS co nne ctor.
Is it con ne cte d corre ctly?
Re p lace the S MP S.
Che ck All outpu t vo ltage s o n S MP S .
Are all voltage s no rma l?
Re p lace the Log ic Bo a rd .
Che ck the LED op e ra tion of Logic Boa rd
whitch is norm a lly ope ra ting ?
(Norma l : Blink on ce a se cond)
No
No
No
CAUTION
MakesuretodisconnectthepowerbeforeworkingontheSMPSboard.
Copyright©1995-2011SAMSUNG.Allrightsreserved.4-5
4.Troubleshooting
Speaker
Speaker cable
CN801
■NoSound
Symptom•Videoisnormalbutthereisnosound.
•Whenthespeakerconnectorsaredisconnectedordamaged.
MajorChecklist
•WhenthesoundprocessingpartoftheMainBoardisnotfunctioning.
•Speakerdefect.
•SMPSnotsupplyingvoltagetothemainboard.
Diagnostics
<43"PDP>
<51"PDP>
4-6Copyright©1995-2011SAMSUNG.Allrightsreserved.
4.Troubleshooting
Ye s
Ye s
Ye s
Re place the S pea ke r.
Re place the S MP S.
Is th e ou tput vo ltage of SMPS norm a l?
(CN801 7 pin : 1 5V)
Re place the Ma in b oa rd.
(1)
Is th e s pea ke r ou tpu t te rminal of
the Ma in boa rd no rma l?
Conn e c t th e c a b le pro pe rly or
repla ce th e c a b le, if ne ce s s ary.
Is th e ca ble c onn e ction be twee n
Main b oa rd a nd the sp e a ker
prope rly co nn e cted ?
No
No
No
CAUTION
MakesuretodisconnectthepowerbeforeworkingontheIPboard.
Copyright©1995-2011SAMSUNG.Allrightsreserved.4-7
4.Troubleshooting
4.1.3.FaultsandCorrectiveActions
SymptomRelatedImageCausesandCountermeasures
Ablankverticalcell(block)
appearsonthescreen.
•Addressbufferdefect
•Replacethecorrespondingupper/lowerbuffers.
(E,ForG)
•COFdefect(burnt)
•Replacethemodule.
Agreenscreenappearswhen
theTVisturnedon.
TheOSDboxappearsbut
thereisnotext.
Ablankupper(orlower)
blockappearsonthescreen.
•TheScaleisnotreseting.
•ReplacetheMainboard.
•Incorrectprogramversion.
•Checktheversionofeachprogram.
•ReplacetheMainboard.
•Upper/LowerYBufferdefect
•Replacethecorrespondingupper/lowerbuffers.
Eitherthemainorsubpicture
doesnotappear.
Averticalgreenlineappears
onthescreen.
4-8Copyright©1995-2011SAMSUNG.Allrightsreserved.
•ReplacetheMainboard.
•TheSMPSvoltageisincorrect.
•AdjusttheSMPSvoltageaccordingtothevoltage
printedonthemodulelabel.
SymptomRelatedImageCausesandCountermeasures
4.Troubleshooting
Dimscreen(blurredinred)
•X-Mainboarddefect
•ReplacetheX-Mainboard.
Ablankscreenappears.•ReplacetheY -Mainboard.
Copyright©1995-2011SAMSUNG.Allrightsreserved.4-9
4.Troubleshooting
OF F
ON
P o we r ON Logic ON S e que nce (P OS) Norma l To ggling
(e ve ry 32 Vs yn c)
-. NT : 534 ms
-. P AL : 640 ms
540
ms
8 .06
s e c
Exce ption
540ms540ms540ms540
ms
27 Mhz
2 .44
s e c
163
ms
P LL ON
163ms163ms163ms163
ms
·
· ªª µµªª ¦¦ ¹¹ ee
...
·
· ªª µµªª ¦¦ ¹¹ ee
...
5
s e c
·
· ªª µµªª ¦¦ ¹¹ ee
...
DR V_RES E T
2
s e c
4.1.4.OperatingLogicLED
■Normal
•LEDON/OFFfor0.5s
■Abnormal
•LEDON/OFFthreetimesfor8.1s
■DRV_RESET
•LEDONfor5sandLEDOFFfor2s
4-10Copyright©1995-2011SAMSUNG.Allrightsreserved.
4.1.5.AdjustFunctionKeySensitivity
1)Select'Factory'
4.Troubleshooting
2)Select'Control'
Copyright©1995-2011SAMSUNG.Allrightsreserved.4-11
4.Troubleshooting
3)Select'SubOption'
4)Select'KeySensitivity'
4-12Copyright©1995-2011SAMSUNG.Allrightsreserved.
5)Defaultvalue(PD490=56,PD550=32)
No use 'Key Sens itivity' Ve ry Sensitive Insensitive
4.Troubleshooting
6)AdjustTheValueofKeySensitivity
Copyright©1995-2011SAMSUNG.Allrightsreserved.4-13