Samsung PS43D450A2WXZG Schematic

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)Makesurethatnogapsexistbetweenthecabinetsforchildrentoinserttheirngersintopreventchildrenfrom receivingelectricshocks.GapsmentionedaboveincludeventilationholesofatoogreatmagnitudebetweenthePDP moduleandthecabinetmask,andtheimproperinstallationoftherearcabinet.

Errorsmayoccurwhentheresistanceisbelow1.0MΩorover5.2MΩ.Inthesecases,makesurethatthedeviceis repairedbeforesendingitbacktothecustomer.

3)CheckforElectricityLeakage(ACLeakageTest)

WARNING

Donotuseaninsulatedtransformerforcheckingtheleakage.Useonlythosecurrentleakagetestersormirroring systemsthatcomplywithANSIC101.1andtheUnderwriterLaboratory’sspecications(UL1410,59.7).

Figure1.1ACLeakageT est

4)Ahighvoltageismaintainedwithinthespeciedlimitsusingsafetyparts,calibrationandtolerances.Whenvoltage exceedsthespeciedlimits,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.

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

resistanceanddielectricstrengthspecications).Irregularpartsormaterialsmaycauseelectricshockorre.

1.2.ServicingPrecautions

WARNING

1)Firstcarefullyreadthe“SafetyInstruction”inthisservicemanual.

Whenthereisaconictbetweentheserviceandthesafetyinstructions,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

1.Precaution

1.3.StaticElectricityPrecautions

1)Somesemi-conductive(“solidstate”)devicesarevulnerabletostaticelectricity .ThesedevicesareknownasESD. ESDincludestheintegratedcircuitandtheeldeffecttransistor.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 fromthecarpetoorcangenerateenoughstaticelectricitytodamagetheESD.

CAUTION

Theseservicinginstructionsareforusebyqualiedservicepersonnelonly.

Toreducetheriskofelectricshockdonotperformanyservicingotherthanthatcontainedintheoperatinginstructions unlessyouarequaliedtodoso.

1.4.InstallationPrecautions

1)Forsafetyreasonsaminimumoftwopeoplearerequiredtocarrythisproduct.

2)Keepthepowercordawayfromanyheatemittingdevices,asameltedcoveringmaycausereorelectricshock.

3)Donotplacetheproductinareaswithpoorventilationsuchasabookshelforcloset.Theincreasedinternaltemperature maycausere.

1.Precaution

4)Bendtheexternalantennacablewhenconnectingittotheproduct.Thisisameasuretoprotectitfrombeingexposedto moisture.Otherwise,itmaycauseareorelectricshock.

5)Makesuretoturnthepoweroffandunplugthepowercordfromtheoutletbeforerepositioningtheproduct.Also checktheantennacableortheexternalconnectorsiftheyarefullyunplugged.Damagetothecordmaycausere orelectricshock.

6)Keeptheantennafarawayfromanyhigh-voltagecablesandinstallitrmly.Contactwiththehigh-voltagecableorthe antennafallingovermaycausereorelectricshock.

7)WhenconnectingtheRFantenna,checkforaDTVreceivingsystemandinstallaseparateDTVreceptionantennafor areaswithnoDTVsignal.

8)Wheninstallingtheproduct,leaveenoughspace(4”)betweentheproductandthewallforventilationpurposes.A riseintemperaturewithintheproductmaycausere.

9)WhenmovingaPDPwithremovablespeakers,detachthespeakersrstbeforemovingthemainbody.MovingthePDP mainbodywithoutseparatingthespeakersmaycausethespeakerstodetach,possiblycausingdamageorinjury.

2.ProductSpecication

2.1.ProductFeature

■Features

BlockSpecicationMajorICRemark

2.ProductSpecication

RFDigital/Analog(DTVBuiltIn)

PDPModuleSDIDHMODULE

Power

Video

SoundSRSTruSuroundHD,DolbyDigitalTAS5715OpticalOutput

CabinetC490Design

SAMSUNGELECTROMECHANICS

SMPSDOY ANGSMPS

NTSC3.58A TSC

HDMI

Component,PC

43”HD

51”HD

MSD2248

NewModule

2.ProductSpecication

■Specication

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

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

COMPONENT1-480i/480p/720p/1080i/1080p

AudioInput

AudioOutputAUDIO(L/R)

SpeakerOutput10W+10W(40dB+40dB)

NewFeatures3DBuilt-In

COMPONENT2-480i/480p/720p/1080i/1080p

DVI

2.2.SpecicationsAnalysis

DisplayTypePDPTVPDPTVPDPTV

Built-InT unerOOO

2.ProductSpecication

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

2.ProductSpecication

TIP

O:Supported,X:NotSupported

NOTE

Forthepowersupplyandpowerconsumption,refertothelabelattachedtotheproduct.

2.3.Accessories

A B C D

2.3.1.SuppliedAccessories

AccessoriesItemItemcodeRemark

RemoteControlAA59-00484A

Batteries4301-000103

PowerCord3903-000456

Owner`s

Instructions

BN68-03491C

2.ProductSpecication

SamsungService

Center

Cloth-CleanBN63-01798B

FerriteCorefor

PowerCord

3301-002049

2.ProductSpecication

2.3.2.SoldSeparately

AccessoriesItemItemcodeRemark

RS232Cable-

HDMI-

HDMI-DVI-

Component-

Composite(A V)-

Coaxial(RF)-

VGA-

SamsungServiceCenter

3.Disassembly&Reassembly

3.1.OverallDisassembly&Reassembly

3.Disassembly&Reassembly

CAUTION

•Besuretoseparatethepowercordbefore disassemblingtheunit.

•DischargethecapacitorsrstwhenseparatingPCB’s withhighcapacitycapacitorssuchasSMPS,X MainBoard,YMainBoard,etc.(Asparkmaybe generatedbytheelectriccharge,andthereisdanger ofelectronicshock.)

•Checkthatthecablesareproperlyconnected referringtothecircuitdiagramwhendisassembling orassemblingtheunittakingcarenottodamagethe cables

•TakecarenottoscratchtheGlassFilterinthefront.

•Assembletheboardsinthereverseorderofthe disassembly.

•Theplasmamustbelayeddownonaatpadded surfacefordisassemblyandreassembly.

1.Placemonitorfacedownoncushionedtable.Remove

screwsfromtheStand.Removestand.

*Rearviewof43"

<43"PDP>

6001–002621:M4*L8

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.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

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

3.2.MethodforDisassemblyofFunctionAssy

3.Disassembly&Reassembly

1.PutuptheupperLocking,Usescrewdriver.

2.PutupthelowerLocking,Usescrewdriver.

3.RemoveLocking.

4.DetachtheFunctionPBA.

CAUTION

Disconnectallconnectorspriortoremovingboards.

4.Troubleshooting

4.1.CheckpointsbyErrorMode

4.1.1.FirstChecklistforTroubleshooting

1)Checkthevariouscableconnectionsrst.

•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.

4.Troubleshooting

Fuse

CN801

CN201

Fuse

CN801

CN201

4.1.2.CheckpointsbyErrorMode

■NoPower

•TheLEDsonthefrontpaneldonotworkwhenconnectingthepowercord.

Symptom

MajorChecklist

•TheSMPSrelaydoesnotworkwhenconnectingthepowercord.

•Theunitappearstobedead.

TheSMPSrelayortheLEDsonthefrontpaneldoesnotworkwhenconnectingthepowercordif thecablesareimproperlyconnectedortheMainBoardorSMPSisnotfunctioning.Inthiscase, checkthefollowing:

•Checktheinternalcableconnectionstatusinsidetheunit.

•Checkthefusesofeachpart.

•ChecktheoutputvoltagesoftheSMPS.

•ReplacetheMainBoard.

<43"PDP>

<51"PDP>

Diagnostics

4.Troubleshooting

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?

CAUTION

MakesuretodisconnectthepowerbeforeworkingontheSMPSboard.

4.Troubleshooting

LVDS cable

■NoVideo

Symptom•Audioisnormalbutnopictureisdisplayedonthescreen.

•TheoutputvoltageoftheMainSMPS.

MajorChecklist

•ThismayhappenwhentheLVDScableconnectingtheMainBoardandthePanelis

disconnected.

Diagnostics

<43"PDP>

<51"PDP>

4.Troubleshooting

Check the LED

Operation.

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)

CAUTION

MakesuretodisconnectthepowerbeforeworkingontheSMPSboard.

4.Troubleshooting

Speaker

Speaker cable

CN801

■NoSound

Symptom•Videoisnormalbutthereisnosound.

•Whenthespeakerconnectorsaredisconnectedordamaged.

MajorChecklist

•WhenthesoundprocessingpartoftheMainBoardisnotfunctioning.

•Speakerdefect.

•SMPSnotsupplyingvoltagetothemainboard.

Diagnostics

<43"PDP>

<51"PDP>

4.Troubleshooting

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 ?

Sound Output Shape

(1)

CAUTION

MakesuretodisconnectthepowerbeforeworkingontheIPboard.

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.

•ReplacetheMainboard.

•TheSMPSvoltageisincorrect.

•AdjusttheSMPSvoltageaccordingtothevoltage

printedonthemodulelabel.

SymptomRelatedImageCausesandCountermeasures

4.Troubleshooting

Dimscreen(blurredinred)

•X-Mainboarddefect

•ReplacetheX-Mainboard.

Ablankscreenappears.•ReplacetheY -Mainboard.

4.Troubleshooting

OF F

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

8 .06

s e c

Exce ption

540ms540ms540ms540

27 Mhz

2 .44

s e c

163

P LL ON

163ms163ms163ms163

· ªª µµªª ¦¦ ¹¹ ee

...

· ªª µµªª ¦¦ ¹¹ ee

...

s e c

· ªª µµªª ¦¦ ¹¹ ee

...

DR V_RES E T

s e c

4.1.4.OperatingLogicLED

■Normal

•LEDON/OFFfor0.5s

■Abnormal

•LEDON/OFFthreetimesfor8.1s

■DRV_RESET

•LEDONfor5sandLEDOFFfor2s

4.1.5.AdjustFunctionKeySensitivity

1)Select'Factory'

4.Troubleshooting

2)Select'Control'

4.Troubleshooting

3)Select'SubOption'

4)Select'KeySensitivity'

5)Defaultvalue(PD490=56,PD550=32)

No use 'Key Sens itivity' Ve ry Sensitive Insensitive

4.Troubleshooting

6)AdjustTheValueofKeySensitivity

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