Samsung HW-H355 XU, HW-H355 Service Manual

WirelessAudio– Soundbar(Active SpeakerSystem)

ModelNameHW-H355

ModelCodeHW-H355/XU

SERVICE

WirelessAudio–Soundbar

(ActiveSpeakerSystem)

MANUAL

Contents

1.Precaution

2.ProductSpecication

3.Disassembly&Reassembly

4.Troubleshooting

5.PCBDiagram

HW-H355

6.SchematicDiagram

RefertotheservicemanualintheGSPN(seetherearcover)formoreinformation.

Contents

Contents

1.Precaution........................................................................................................................................1−1

1.1.SafetyPrecautions...................................................................................................................1−1

1.2.ServicingPrecautions...............................................................................................................1−3

1.3.PrecautionsforElectrostaticallySensitiveDevices(ESDs)..............................................................1−4

1.4.InstallationPrecautions.............................................................................................................1−5

2.ProductSpecication.........................................................................................................................2−1

2.1.ProductFeature.......................................................................................................................2−1

2.2.Specications..........................................................................................................................2−2

2.3.SpecicationsAnalysis.............................................................................................................2−3

2.4.Accessories............................................................................................................................2−4

2.4.1.SuppliedAccessories...................................................................................................2−4

3.Disassembly&Reassembly................................................................................................................3−1

3.1.OverallDisassemblyandReassembly..........................................................................................3−1

4.Troubleshooting................................................................................................................................4−1

4.1.CheckpointsbyErrorMode.......................................................................................................4−1

4.1.1.NoPower...................................................................................................................4−2

4.1.2.NoSoundOutput(Digital)............................................................................................4−3

4.1.3.NoSoundOutput(Analog)............................................................................................4−7

4.2.MeasurestobetakenwhentheProtectionCircuitoperates...............................................................4−10

4.2.1.AMPPre-InspectionrelatingtoPowerProtection..............................................................4−10

4.3.Initialization&Update.............................................................................................................4−11

4.3.1.HowtochecktheFirmwareversion................................................................................4−11

4.3.2.Howtoinitialize..........................................................................................................4−11

4.3.3.USBUpdateprocedure.................................................................................................4−12

5.PCBDiagram...................................................................................................................................5−1

5.1.WiringDiagram.......................................................................................................................5−1

5.2.MAINPCBTop......................................................................................................................5−2

5.2.1.PinConnection...........................................................................................................5−3

5.2.2.TestPointWaveForm..................................................................................................5−4

5.3.MAINPCBBottom..................................................................................................................5−5

5.3.1.PinConnection...........................................................................................................5−6

5.3.2.TestPointWaveForm..................................................................................................5−7

5.4.VFDPCBTop.........................................................................................................................5−8

5.5.VFDPCBBottom....................................................................................................................5−9

5.5.1.PinConnection...........................................................................................................5−10

5.6.JACKPCBTop.......................................................................................................................5−11

5.6.1.PinConnection...........................................................................................................5−12

5.6.2.TestPointWaveForm..................................................................................................5−13

iCopyright©1995-2013SAMSUNG.Allrightsreserved.

Contents

5.7.JACKPCBBottom..................................................................................................................5−14

5.7.1.PinConnection...........................................................................................................5−15

6.SchematicDiagram...........................................................................................................................6−1

6.1.OverallBlockDiagram.............................................................................................................6−1

6.2.MAIN-1.................................................................................................................................6−2

6.3.MAIN-2.................................................................................................................................6−3

6.4.MAIN-3.................................................................................................................................6−4

6.4.1.TestPointWaveForm..................................................................................................6−5

6.5.MAIN-4.................................................................................................................................6−6

6.6.MAIN-5.................................................................................................................................6−7

6.6.1.TestPointWaveForm..................................................................................................6−8

6.7.VFD......................................................................................................................................6−9

6.8.JACK....................................................................................................................................6−10

6.8.1.TestPointWaveForm..................................................................................................6−11

Copyright©1995-2013SAMSUNG.Allrightsreserved.ii

1.Precaution

DEVICE
UNDER

TES T

LEAKAGE

CUR RE NT

TES TER

TES T ALL

EXPO SED ME TAL

SU RFACES

2-WIRE CORD

ALSO TE S T WITH

PLUG REVERSED

(US ING AC

ADAPTER P LUG

AS R EQ UIRED)

EARTH

GR OUND

(RE ADING
SH OULD NOT BE
ABOVE 0.5m A)

1.Precaution

FollowthesesafetyinstructionswhileservicingtheESDtopreventdamageandtoprotectagainstpotentialhazards
suchaselectricalshockandX-rays.

1.1.SafetyPrecautions

1)Whenreinstallingthechassisanditsassemblies,besuretorestorealloftheprotectivedevices,includingthecontrol
knobsandthecompartmentcovers.

2)Makesurethattherearenocabinetopeningsthroughwhichpeople(particularlychildren)canmakecontactwith
dangerousinternalcomponents.

3)DesignAlterationWarning:

Neveralteroraddtothemechanicalorelectricaldesignoftheunit.

Example:Donotaddauxiliaryaudioorvideoconnectors.Suchalterationsmightcreateasafetyhazard.

Also,anydesignchangesoradditionswillvoidthemanufacturer’swarranty.

4)LeakageCurrentHotCheckFigure1.1

ACLeakageTest:

WARNING

Donotuseanisolationtransformerduringthistest.Usealeakage-currenttesterorameteringsystemthatcomplies.

Withtheunitcompletelyreassembled,plugtheACcorddirectlyintoaACoutlet.Withtheunit’spowerswitchedfrom
theONtotheOFFposition,measurethecurrentbetweenaknowngroundandallexposedmetalparts.

KnownGrounds-Earth

KnownMetalparts-screwheads,metalcabinets,etc.

Figure1.1ACLeakageTest

1-1Copyright©1995-2013SAMSUNG.Allrightsreserved.

1.Precaution

Ante nna

Term inal

ohm

Expo sed

Meta l Part

Ohmmet er

5)InsulationResistanceColdCheck:

(1)Withtheunit’sACplugdisconnectedfromtheACsource,connectanelectricaljumperacrossthetwoACprongs.
(2)SetthepowerswitchtoON.(3)MeasuretheresistancebetweentheshortedACplugandanyexposedmetallicparts.

Example:screwheads,metalcabinets,antennaport,etc.Ifanyoftheexposedmetallicpartshasareturnpathtothe
chassis,themeasuredresistanceshouldbebetween1and5.2megohms.Ifthereisnoreturnpath,themeasured
resistanceshouldbe“innite.”Iftheresistanceisoutsidetheselimits,ashockhazardmightexist.SeeFigure1.2

InsulationResistanceTest

Figure1.2InsulationResistanceTest

6)Components,partsandwiringthatappeartohaveoverheatedorthatareotherwisedamagedshouldbereplacedwith
partsthatmeettheoriginalspecications.Alwaysdeterminethecauseofdamageoroverheating,andcorrectany
potentialhazards.

7)Observetheoriginalleaddress,especiallynearthefollowingareas:Antennawiring,sharpedges,andespeciallytheAC
andhighvoltagepowersupplies.Alwaysinspectforpinched,out-of-place,orfrayedwiring.

Donotchangethespacingbetweencomponentsandtheprintedcircuitboard.ChecktheACpowercordfordamage.
Makesurethatnowiresorcomponentstouchthermallyhotparts.

8)ProductSafetyNotice:

Someelectricalandmechanicalpartshavespecialsafety-relatedcharacteristicswhichmightnotbeobviousfromvisual
inspection.Thesesafetyfeaturesandtheprotectiontheygivemightbelostifthereplacementcomponentdiffersfrom
theoriginal—evenifthereplacementisratedforhighervoltage,wattage,etc.

9)Componentsthatarecriticalforsafetyareindicatedinthecircuitdiagrambyshading,

or.Usereplacement
componentsthathavethesameratings,especiallyforameresistanceanddielectricstrengthspecications.A
replacementpartthatdoesnothavethesamesafetycharacteristicsastheoriginalmightcreateshock,reorother
hazards.

Copyright©1995-2013SAMSUNG.Allrightsreserved.1-2

1.Precaution

1.2.ServicingPrecautions

1)Servicingprecautionsareprintedonthecabinet.Followthem.

2)Alwaysunplugtheunit’sACpowercordfromtheACpowersourcebeforeattemptingto:
(a)Removeorreinstallanycomponentorassembly ,(b)Disconnectanelectricalplugorconnector,(c)Connecta
testcomponentinparallelwithanelectrolyticcapacitor.

3)Somecomponentsareraisedabovetheprintedcircuitboardforsafety.Aninsulationtubeortapeissometimesused.
Theinternalwiringmaybeclampedtopreventcontactwiththermallyhotcomponents.Reinstallallsuchelements
totheiroriginalposition.

4)Afterservicing,alwayscheckthatthescrews,componentsandwiringhavebeencorrectlyreinstalled.Makesurethat
theportionaroundtheservicedparthasnotbeendamaged.

5)ChecktheinsulationbetweenthebladesoftheACplugandaccessibleconductiveparts(examples:metalpanels,
inputterminalsandearphonejacks).

6)InsulationCheckingProcedure:
DisconnectthepowercordfromtheACsource.Connectaninsulationresistancemeter(500V)tothebladesofthe
ACplug.TheinsulationresistancebetweeneachbladeoftheACplugandaccessibleconductiveparts(seeabove)
shouldbegreaterthan1megohm.

7)NeverdefeatanyoftheB+voltageinterlocks.DonotapplyACpowertotheunit(oranyofitsassemblies)unlessall
solid-stateheatsinksarecorrectlyinstalled.

8)Alwaysconnectatestinstrument’sgroundleadtotheinstrumentchassisgroundbeforeconnectingthepositivelead;
alwaysremovetheinstrument’sgroundleadlast.

CAUTION

Firstreadthe“SafetyPrecautions”sectionofthismanual.Ifsomeunforeseencircumstancecreatesaconictbetweenthe
servicingandsafetyprecautions,alwaysfollowthesafetyprecautions.

1-3Copyright©1995-2013SAMSUNG.Allrightsreserved.

1.Precaution

1.3.PrecautionsforElectrostaticallySensitiveDevices(ESDs)

Somesemiconductor(“solidstate”)devicesareeasilydamagedbystaticelectricity.
SuchcomponentsarecalledElectrostaticallySensitiveDevices(ESDs).
Examplesincludeintegratedcircuitsandsomeeld-effecttransistors.
Thefollowingtechniqueswillreducetheoccurrenceofcomponentdamagecausedbystaticelectricity:

1)Immediatelybeforehandlinganysemiconductorcomponentsorassemblies,draintheelectrostaticchargefromyour
bodybytouchingaknownearthground.Alternatively,wearadischargingwrist-strapdevice.(Besuretoremoveit
priortoapplyingpower–thisisanelectricshockprecaution.)

2)AfterremovinganESD-equippedassembly,placeitonaconductivesurfacesuchasaluminumfoiltoprevent
accumulationofelectrostaticcharge.

3)Donotusefreon-propelledchemicals.ThesecangenerateelectricalchargesthatdamageESDs.

4)Useonlyagrounded-tipsolderingironwhensolderingorunsolderingESDs.

5)Useonlyananti-staticsolderremovaldevice.Manysolderremovaldevicesarenotratedas“anti-static”(thesecan
accumulatesufcientelectricalchargetodamageESDs).

6)DonotremoveareplacementESDfromitsprotectivepackageuntilyouarereadytoinstallit.
MostreplacementESDsarepackagedwithleadsthatareelectricallyshortedtogetherbyconductivefoam,aluminum
foilorotherconductivematerials.

7)ImmediatelybeforeremovingtheprotectivematerialfromtheleadsofareplacementESD,touchtheprotectivematerial
tothechassisorcircuitassemblyintowhichthedevicewillbeinstalled.

8)MinimizebodymotionswhenhandlingunpackagedreplacementESDs.Motionssuchasbrushingclothestogether,or
liftingafootfromacarpetedoorcangenerateenoughstaticelectricitytodamageanESD.

Copyright©1995-2013SAMSUNG.Allrightsreserved.1-4

1.Precaution

1.4.InstallationPrecautions

1)Keeptheproductawayfromaheatsourcesuchascandlelight,mosquitorepellentincense,heatingequipment,ordirect
sunlight.Otherwise,thismaycausere.

2)Donotinstalltheproductonaplacethatisshaking,tilted,unstable,orseriouslyvibrating.Theproductmaydroptoget
damagedorinjureaperson.Ifusingtheproductinahighlyvibratingplace,itmaybebrokenorcausere.

3)Whenmovingtheproduct,turnoffthepowerswitchandunplugalltheconnectedcableswiththeproductsuchasthe
powerplugandantennacable.Ifthepowercordisdamaged,thismaycauseelectricshockorre.

4)Secureroomforventilation.Keepatleast10cmofdistancefromtherearwall,andatleast5cmfromeithersidewall.

5)Installingtheproductinaspecialplacelikebelowratherthannormalenvironmentmaycauseseriousqualityconcerns
duetoitsspecialconditions.Ifthisisthecase,makesuretocontactalocalSamsungservicecenterbeforeinstallingthe
product.(Specialplaces:aplacewherealargeamountofdustisaccumulated;wherechemicalsubstancesareused
ortheambienttemperatureistoohighorlow;aplacethatisfullofmoistureorwater;intransportationvehicles
suchasacar;orinpublicplacessuchastheairportorsubwaystationwheretheproductissupposedtooperate
uninterruptedlyforalongtime)

6)Keepthepackagingplasticwrapperoutofchildren'sreach.Ifchildrenplaywithitimproperly,theymaygetsuffocated.

7)Ifinstallingtheproductonadisplaycabinet,shelf,desk,etc.,keeptheproductfromprotrudingonitslowerside.Ifthe
productfalls,itmaybreakorcausephysicalinjury .Useonlythedisplaycabinetorshelfthatfullycoverstheproduct.

8)Ifusinglithiumbatteries,carefullyreadthefollowingprecautions:

NOTE

•Ensurethebatteriesareinsertedintherightdirection.Otherwise,theymaycauseanexplosion.Disposeofusedbatteries
accordingtothemanufacturer'sinstructions.

•Donotexposethebatterytore.

•Donotdisassemble,short-cut,orheatthebattery.

•Useonlythesametypeandsizeofbatteriesforreplacement.

•Donotexposethebatterytoreorexcessiveheat.

1-5Copyright©1995-2013SAMSUNG.Allrightsreserved.

2.ProductSpecication

2.1.ProductFeature

■HW-H355

•120W(30Wx2+60W)

•2.1CH,System

•VirtualSurround

•USBHostSupport

•BluetoothPowerON

•SmartV olumeII

•SoundConnect

2.ProductSpecication

•3DSOUNDPlus

•Bluetooth

Copyright©1995-2013SAMSUNG.Allrightsreserved.2-1

2.ProductSpecication

2.2.Specications

■BasicSpecication

USB5V/0.5A

Weight

General

Amplier

NOTE

•S/Nratio,distortion,separationandusablesensitivityarebasedonmeasurementusingAES(AudioEngineeringSociety)
guidelines.

•SamsungElectronicsCo.,Ltdreservestherighttochangethespecicationswithoutnotice.

•Weightanddimensionsareapproximate.

Dimensions
(WxHxD)

Operatingtemperaturerange+5°Cto+35°C

Operatinghumidityrange10%to75%

Ratedoutput
power

S/Nratio(analoginput)60dB

Separation(1kHz)50dB

Mainunit1.75kg

Subwoofer3.0kg

Mainunit943x49x59.9mm

Subwoofer152x300x284mm

Mainunit30W/CH,8OHM,THD=10%,1kHz

Subwoofer60W,3OHM,THD=10%,100Hz

2-2Copyright©1995-2013SAMSUNG.Allrightsreserved.

2.3.SpecicationsAnalysis

ModelNameHW-H355HW-F355

Photo

2.ProductSpecication

Output

Power

Extra

Features

DSP

Decoding

RMS(10%THD),
REF:1ch

OutputPower(ch)30Wx2+60W30Wx2+60W

WirelessReady--

SoundConnectOO

USBHOSTOO

BluetoothOO

VirtualSurround

3DSOUND3DSoundPlus3DSoundPlus

ASC--

SmartV olumeSmartVolumeIISmartVolumeII

DolbyDigital/PlusDolbyDigital2.0DolbyDigital2.0

DolbyT rueHDN/AN/A Audio

DTS/DTS-HD
(HR/MA)

Music/Voice/Sports/Cinema

120W120W

4mode

Music/News/Cinema/Drama/

/Standard(Off)

DTSDTS

Sports/Game/Standard(Off)

6mode

O:FeatureIncluded

X:NotIncluded

Audio

In/Out

Optical

Jack

Speaker

TIP

MiniJackAudioInAUX1(3.5φ)AUX1(3.5φ)

RCAInput--

In(DigitalIn)O(1)O(1)

InternalT ype

Type(Sat/T allboy)

Active(Powered)S/WWiredPassiveWiredPassive

(MainFrameBuilt-InType)

1way1spk

InternalT ype

(MainFrameBuilt-InType)

1way1spk

Copyright©1995-2013SAMSUNG.Allrightsreserved.2-3

2.ProductSpecication

POWER

TV POWER

AH59-02548A

TV VOL TV CH AUDIO SYNC

AUX USB TV SOURCE

TV PRE-CH

TV EXIT

SMART VOLUMESOUND EFFECT

S/W

LEVEL

S/W

LEVEL

VOL

VOL

3D SOUND

PLUS

DRC

TV INFOTV MUTE

AUTO POWER

DIMMERREPEAT

OPTICAL

MUTE

(S cre w:2EA)

(H

olde r-s c re w:2E A)

2.4.Accessories

2.4.1.SuppliedAccessories

AccessoriesItemItemcode

RemoteControlAH59-02612A

Batteries(AAAsize)4301-000116

FerriteCore3301-001068

Screw

USBCableAH39-01270A

UserManualAH68-02676A

PowerCord3903-000539

AdapterBN44-00722A

AudioCableAH39-01077A

AH61-03342A

6001-001961

2-4Copyright©1995-2013SAMSUNG.Allrightsreserved.

3.Disassembly&Reassembly

3.Disassembly&Reassembly

3.1.OverallDisassemblyandReassembly

CAUTION

•Becarefultofollowthedisassemblysequencedescribedinthemanual.Otherwise,theproductmaybedamaged.

•BesuretocarefullyreadandunderstandthesafetyinstructionsbeforeperforminganyworkastheICchipson

thePCBarevulnerabletostaticelectricity.

•Inordertoassemblereversetheorderofdisassembly.

DescriptionDescriptionPhoto

1.Loosen8screwsattheRearCover.
:M3X10B

CAUTION

Becarefulnottomakeanyscratchesasyouremovethem.

2.Loosen9screwsattheRearCover.
:M3X10B

3.Open2JackCoversattheRearCover.

4.PulltheRearCoverinthedirectionofthearrows.

5.Loosen5screwsontheboards.
:M3X10B,M3X5S

UnplugAllConnectorsontheMainPCB.

6.RemovetheLeftSpeaker.

RemovetheJackPCB.

7.RemovetheMainASSY.

8.Loosen2screwsattheVFDPCB.
:M3X10B

Copyright©1995-2013SAMSUNG.Allrightsreserved.3-1

3.Disassembly&Reassembly

9.RemovetheVFDPCB.

PulltheRightSpeaker.

10.Finish.

DescriptionDescriptionPhoto

3-2Copyright©1995-2013SAMSUNG.Allrightsreserved.

4.Troubleshooting

4.1.CheckpointsbyErrorMode

V oltage/DIV1V/div

TIME/DIV500ms/div

4.Troubleshooting

OscilloscopeSettingV alues

Copyright©1995-2013SAMSUNG.Allrightsreserved.4-1

4.Troubleshooting

Check if 23. 5V

is m e a sure d on the MAIN PC B

PCN1 P IN #1.

Check if 23. 5V

is m e a sure d at the

Adapte r pin #1 .

Check th e AC Cord output.

Yes

MAIN PC B P CN1 cha nge .

No No No

Yes

The powe r doe s n ot tu rn on.

Change the MAIN PC B.

Yes

Check if H(3.4 V)

is m e a sure d at the pin #6 2

of the UIC1 wh en MAIN PCB

power is tu rne d on .

Re place the AC C ord .

Re place the Micom (UIC1).

Check Ada pter a nd

replace Ada pter.

Yes

4.1.1.NoPower

4-2Copyright©1995-2013SAMSUNG.Allrightsreserved.