Service Manual AV321T Service Manual

AV321T

servicemanual

Catalog

ChapterOneAboutMaintenance

1.1Safetyprecautions

1.1.1Powersupply

1.1.2Precautionsforantistatic

1.1.3Aboutplacementposition

1.2Maintenancemethod

1.2.1Visualizedmethod

1.2.2Electricresistancemethod

1.2.3Voltagemethod

1.2.4Currentmethod

1.2.5Cuttingmethod

1.2.6Elementsubstitutionmethod

1.2.7Comparisonmethod

1.3Requireddeviceformaintenance

1
1
1
1
2
2
2
2
2
2
2
3
3
3

ChapterTwoFunctionsandOperationInstructions

2.1FEATURES

2.2ControlbuttonlocationsandExplanations

2.2.1Frontpanelfunctionsandillustrations

2.2.2VFDDISPLAY

2.2.3REARPANELILLUSTRATIONS

2.2.4REARPANELILLUSTRATIONS

2.3BASICOPERATIONS

2.3.1TurnOn/OfftheUnit

2.3.2Mute

2.3.3SelectInputSoundSourceandVideoSource

2.3.4SelectDecodeMode

2.3.5AdjustVolume

2.3.6AdjustChannelLevel

2.3.7AdjustMainChannelTone

4
4
4
4
5
5
6
7
7
7
7
8
8
9
9

2.3.8SelectEQMode

9

2.3.9DEFAULT

2.3.10Karaoke

2.3.11Tuning

2.3.12Tuning(Continued)

2.3.13ChannelDelay

2.3.14NoiseTesting

2.3.15SelectSpeakerMode

2.3.16Headphone

2.4ACCESSORIES

2.5SPECIFICATIONS

ChapterThreeUnitCircuitPrinciple

SectionOnePrincipleoftheplayer

3.1.1Compositionoftheplayer

3.1.2Functionandfeatures

9
9
10
11
12
12
12
12
13
13

14
14
14
14

3.1.3Blockdiagramoftheplayer

3.1.4Signalflowchartoftheplayer

SectionTwoUnitCircuitPrinciple

3.2.1Signalprocessingboard

3.2.2Decodeboard

3.2.3Controlpanel

3.2.4Powerboard

3.2.5Poweramplifierboardandprotectioncircuit

3.2.6Videoinput/outputboard

3.2.7MIC,headphoneboard

SectionThreeServicingCases

3.3.1Servicingcases

3.3.2Troubleshootingflowchart

SectionFourServicingParameter

3.4.1Signalwaveformdiagram

15
16
17
17
18
19
20
21
24
24
26
26
32
37
37

3.4.2Keypointvoltage

SectionFiveFunctionIntroductiontoIC

3.5.1functionintroductionto4558

3.5.2functionintroductiontoPt2399

47
48
48
49

3.5.3functionintroductiontoCd4051

50

3.5.4functionintroductiontoCd4052

3.5.5functionintroductiontoCd4053

3.5.6functionintroductiontoPt6311

3.5.7functionintroductiontoUTCLM4880

3.5.8functionintroductionto74HC04

3.5.9functionintroductiontoLm1875

3.5.10functionintroductiontoTDA2052

3.5.11functionintroductiontoM62446

3.5.12functionintroductiontoAT24C02

3.5.13functionintroductiontoL7805

3.5.14functionintroductionto7812

3.5.15functionintroductionto7912

3.5.16functionintroductiontoNe5532

3.5.17functionintroductiontoPt2315

3.5.18functionintroductiontoCs4360

51
52
53
56
56
57
58
59
61
62
62
63
63
64
66

3.5.19functionintroductiontoCd4094

3.5.20functionintroductiontoCs5340

3.5.21functionintroductiontoCs8415

3.5.22functionintroductiontoCs49326

ChapterFourDisassemblyandAssemblyProcess

ChapterCinquePCBboard&Circuitdiagram
SectionOnePCB
BoardSectionTwocircuitdiagram

ChaptersixBOMList

6.1SIGNALDISPOSALBOARD

6.2SIGNALDISPOSALBOARDAISEGMENT

6.3DECODEBOARD

67
68
70
71

74

75
75
83

93
93
93
96

6.4DECODEBOARD-SMD

6.5AMPLIFIERBOARD

6.6SURFACECONTROLBOARD

6.7POWERBOARD

96
98
101
102

6.8MICROPHONEHOLDERBOARD

104

6.9VIDEOFREQUENCYBOARD

6.10REMOTECONEROLLER

6.11PANELUNIT

6.12PROGRAMCPU

6.13SNLABEL

6.14SUPPLEMENTMODULE

104
105
106
106
106
107

ChapterOneAboutMaintenance

1.1Safetyprecautions

1.1.1Powersupply

Whenservicingaudiopoweramplifier,theservicingpersonnelpayspecialattentiontothepower
boardwith220VAC,orelsetheimproperoperationwillleadtobodydamage.Thealternatecurrent
whichoutputstopoweramplifierboardthroughpowerboardisalsouptovoltagewithabout50V;when
servicing,short-circuitandjointweldingcannotoccur,orelsetheelementswillbeburntoutandtrouble
rangewillbeenlarged.

1.1.2Precautionsforantistatic

Movementandfrictionwillbothbringstaticelectricitywhichcausesseriousdamagestointegrated
IC.Thoughstaticchargeislittle,whenalimitedquantityofelectricchargeisaddedtolarge­scaleintegratedIC,asthecapacitanceisverysmallinthemeantime,nowtheintegratedICisverymuch
easytobestruckthroughbystaticelectricityortheperformancewilldecrease.Thusstaticelectricity
preventionisofextraordinaryimportance.Thefollowingareseveralmeasurestopreventstatic
electricity:

1.Useapieceofelectricconductionmetalwiththelengthofabout2metrestoinsertintotheearth,
andFetchtheleadwirefromthetopofthesurplusmetalandconnecttotherequiredstaticelectricity
device.Thelengthanddepthofthemetalembeddedundertheearthshouldbedeterminedaccordingto
thewettabilityofthelocalsoil.Forhumidplaces,itmaybeshorter,andlongeranddeeperfordryplaces.
Ifpossible,itcanbedistributedandlayedintermsof“#”shape.

2.Onoperatingtable-board,theantistatictablecushionshouldbecoveredandgrounded.

3.Alldevicesandequipmentsshouldbeplacedontheantistatictablecushionandgrounded.

4.Maintenancepersonnelshouldwearantistaticwristringwhichshouldbegrounded.

5.Placesaroundtheoperatingpositionshouldalsobecoveredwithelectricconductioncushionor
Paintedwithantistaticpaint.

-1-

1.1.3Aboutplacementposition

1.

Audiopoweramplifiercannotbeinstalledinplaceswithhightemperatureandhumidity.

2.Positionsforplacementshouldbestableandsecure.

1.2Maintenancemethod

1.2.1Visualizedmethod

Directlyviewwhetherabnormalitiesofcollision,lackofelement,jointwelding,sheddingwelding,
rosinjoint,copperfoilturningup,leadwiredisconnectionandelementsburningupamongpinsof
elementsappear.Checkpowersupplyofthemachineandthenusehandstotouchthecasingofpartof
elementsandcheckwhethertheyarehottojudgethetroublespot.Youshouldpaymoreattentionwhen
usingthismethodtocheckinhighvoltageparts.

1.2.2Electricresistancemethod

Setthemultimeterinresistancepositionandtestwhetherthenumericalvalueofresistanceofeach
pointinthecircuithasdifferencefromthenormalvaluetojudgethetroublespot.Butinthecircuitthe
testednumericalvalueofresistanceisnotaccurate,andthetestednumericalvalueofintegratedIC's
pinscanonlybeusedforreference,sotheelementsshouldbebrokendownfortest.

1.2.3Voltagemethod

Voltagemethodisrelativelyconvenient,quickandaccurate.Setthemultimeterinvoltageposition
andtestpowersupplyvoltageoftheplayerandvoltageofacertainpointtojudgethetroublespot
accordingtothetestedvoltagevariation.

1.2.4Currentmethod

Setthemultimeterincurrentpositionandtestcurrentoftheplayerofacertainpointtojudgethe
troublespot.Butwhentestingincurrentmethod,themultimetershouldbeseriesconnectedinthe
circuit,whichmakesthismethodtootrivialandtroublesome,soitislessfrequentlyusedinreality.

1.2.5Cuttingmethod

Cuttingmethodshouldbecombinedwithelectricresistancemethodandvoltagemethodtouse.
Thismethodismainlyusedinphenomenaofshortcircuitandcurrentleakageofthecircuit.When
cuttingtheinputterminalvoltageofacertainlevel,ifvoltageoftheplayerrisesagain,itmeansthatthe
troubleliesinthislevel.

-2-

1.2.6Elementsubstitutionmethod

Whensomeelementscannotbejudgedgoodorbad,substitutionmethodmaydeadopteddirectly.

1.2.7Comparisonmethod

AsamegoodPCboardisusuallyusedtotestthecorrectvoltageandwaveform.Comparedthese
datawiththosetestedthroughfaultPCboard,thecauseoftroublesmaybefound.

Throughtheabovemaintenancemethod,theoreticalknowledgeandmaintenanceexperience,all
difficultiesandtroubleswillbereadilysolved.

1.3Requireddeviceformaintenance

AudioGenerator

◆

Digitaloscillograph(100MHE)

◆≥

SMDreworkstation

◆

Multimeter

◆

Solderingiron

◆

Pointed-monthpincers

◆

Cuttingnippers

◆

Forceps

◆

Electricscrewdriver

◆

Terminalsconnectingcord

◆

Headphone

◆

Microphone

◆

-3-

ChapterTwo

FunctionsandOperationInstructions

2.1FEATURES

◆

2-waycoaxialdigitalsignalinput,1-wayopticaldigitalsignalinput

◆

With5.1CHinputterminal,capableofconnectingwithexternalmulti-channeladvanceddecode
outputsignalssuchasDOLBYDIGITAL,DTS

◆

Withsubwooferoutputterminal,capableofconnectingwithactivesubwooferspeaker

◆

Built-inFM/AMtuner

◆

Withheadphoneoutputjack

◆

6CHdigitalvolumecontrol

◆

Separateleveladjustmenttoleft,right,centre,surroundandsubwooferchannel

◆

DolbyDigital,DTS,DolbyProLogicII,DSP,STEREOdecode

◆

Automaticallyrecognizeinputsignalformatandselectthecorrespondingdecodemode

◆

Decodemodemanualselection

◆

Mainchannelhigh/lowtoneadjustment

◆

VideoandS-Videoselectedfunction

◆

Centre,surrounddelayadjustmen

◆

Noisetesting

◆

5presetEQmodes

◆

Digitaltuningfunction

◆

Capableofstoring36FMand12AMradiostations

◆

Automatically/Manuallysearchingradiostations

◆

Automuteifthereisnosignal

◆

High-performancedigitalKaraoke,withMICvolume,toneandechoadjustment

◆

Separate5CHpoweramplification

◆

Speciallyautomaticprotectionofshort-circuit,over-voltageandover-current

◆

Fullremotecontroloperation

t

◆

Completeunitinterface

-4-

REARPANELILLUSTRATIONS

2.2ControlbuttonLocationsandExpLanations

2.2.1Frontpanelfunctionsandillustrations

６

HOMETHEATRERECEIVERAV311T

MUTE

SL

１ ２ ４ ５３

1

POWERswitch
Switchon/offtheACpoweroftheunit

2

MENUbutton
MENUbutton,pleaserefertotherelated
chaptersfordetails

3

Multi-FunctionKnob
Innormalworkingmode,synchronously
adjust6-channellevel.Inaddition,by
usingthisknobandMENUbutton,you
mayfulfilmultiplefunctions.Pleaserefer
totherelatedchaptersfordetails...

PRESET

TUNER

STERO

MP3

RCL

SR

SLEEP

SOUNDFIELD

STEREO

STADIUM

DIGITAL

OPTICAL

STAGE

CH HALL

KHZ

DISCO

MHZ

LIVE

４

Headphonejack

5

MICjack

6

IRsensorwindow
Receivetheremotecontrolsignals.

2.2.2VFDDISPLAY

３ １１

１６

８５ ７６ ９ １０

１３１４ １２１５

-5-

1

MUTEsymbol

2

DTSdecodemodesymbol

3

DolbyDigitaldecodemodesymbol

4

DolbyProLogicdecodemodesymbol

5

TUNERsymbol,itsflickershowsthetuneris

Ⅱ

insignalsearchingstate

6

Callthepresetsavedradiostation,orhas
savedthecurrentlytuningchannel

7

Thetunerhasreceivedsignal
Stereodecodemodeorthecurrently

8

receivedFMradiostationisstereooutput
signal

2.2.3REARPANELILLUSTRATIONS

9

DSPdecodemodesymbol

１０

InDSPdecodemode,stimulateSTADIUM
soundfield

11

InDSPdecodemode,stimulateSTAGE
soundfield

12

InDSPdecodemode,stimulateHALLsound
field

13

InDSPdecodemode,stimulateDISCO
soundfield

14

InDSPdecodemode,stimulateLIVEsound
field

15

Connectchannel,dataformatdisplayarea

16

Effectivechanneldisplayarea

８

７

1

1

DIGITAL

VCD

VCD

VCDDVD DVDOUT OUT

Coaxialdigitalsoundsourceinputjack1,2;

opticaldigitalsoundsourceinputjack

2

AM/FMantennaterminal

ConnectAM/FMantennaoutside

3

S-VIDEO

VCDDVDS-VideoSelectedJacks

、

4

STEREO

VCDDVDstereoaudiosignalinputjack

、

5

5.1CH

5.1CHaudiosignalinputjack

6

VIDEO

VCDDVDVideoSelectedJacks

、

１０

7

LINEOUT

９

Subwoofersignallineoutputjack

8

Data
Modeldataplate

9

Speakerjack
Connectwithspeakerterminals

10

CAUTIONmark
Remindtheuserofdangerousvoltage
Inside

11

Dualsquaresymbol
ClassIIelectricshockprotectionproduct

１１

-6-

2.2.4ILLUSTRATIONSTOTHEREMOTECONTROL

1

STANDBYbutton:Enterorexitstandbystate

2

SOUND/VIDEOSOURCEbutton:Selectinput
signalsourcesmanually

3

NUMBERbuttons:Forsavingandcallingsaved
radiostations

4

AMSTEPbutton:Pressingthisbuttonforlong
(above3seconds)mayswitchstepvalus9KHz
or10KHzintheAMwaveband

5

FORWARD/AFTERWARDbutton:Callthe
savedradiostationsforward/backward

6

DEFAULTbutton:Pressthisbuttonforlong
(above3seconds),theunitautomatically
restoressystemparametertodefaultvalue

7

MULTI-FUNCTIONbuttons

8

CHANNELbuttons:Usingwithmulti-function
buttonsmayseparatelyadjust channelleve

9

STEREOMODEbuttonl

10

DOLBYPROLOGICDECODEMODEbutton

11

DTSDECODEMODEbutton

12

DOLBYDIGITALDECODEMODEbutton

13

SPEAKERMODESETUPbutton:Pressingthis
buttonmaycircularlyselectmainspeakermode
andsubwooferon/offmode

14

EQMODEbutton:Pressthisbuttonto
circularlyselectEQmode

15

KARAOKEECHO(+,-)button:AdjustKaraoke
echo

16

KARAOKETREBLE(+,-)button:Adjust
Karaoketreble

17

KARAOKEBASS(+,-)button:AdjustKaraoke
bass

18

KARAOKEVOLUME()button:Adjust
Karaokevolume

19

MAINCHANNELTREBLE(+,-)button:Adjust
mainchanneltreble

20

MAINCHANNELBASS(+,-)button:Adjust
mainchannelbass

21

DSPDECODEMODEbutton

22

MAINVOLUMEbutton:Capableof
synchronouslyadjusting6-channelvolume

23

DELAYbutton:Usingwithmulti-function
adjustmentbuttonsmayadjustcentre,surround
channeldelay

24

FMSTEREOMODEbutton:Manually/
automaticallyselectFMstereomode

25

WAVEBANDbutton:UsedtoswitchFM/AM
waveband

ＴＵＮＥＲ

ＭＥＭ

ＲＣ

ＴＲＥＢＬＥ

ＭＵＴＥ

ＴＥＳＴ

５．１ＣＨ

ＢＡＮＤ

ＭＯＤＥ

ＤＥＬＡＹ

ＶＯＬ

ＢＡＳＳ

ＭＩＣＶＯＬ

ＳＴＡＮＤＢＹ

１

ＯＰＴＩＣＡＬ

２

３

４

５ ５

６６

７

８

９

１０
１１

１２
１３
１４

１５

１６

26

MEMORYbutton:Savetuningstations

27

NOISETESTINGbutton

28

MUTEbutton

ＣＯＡＸ．１ ＣＯＡＸ．２

ＤＶＤ

ＶＣＤ

９ ０

ＳＴＥＰ

ＤＥＦＡＵＬＴ

Ｌ

ＳＬ ＳＷ ＳＲ

ＳＴＥＲＥＯ ＤＳＰＰＬⅡ

ＤＩＧＩＴＡＬ

ＤＴＳ

ＥＱＭＯＤＥ

ＳＰＫ．

ＥＣＨＯ ＴＲＥＢＬＥ ＢＡＳＳ

ＫＡＲＡＯＫＥ

RC-311

２８

２７

２６
２５

７

２４

２３

２２

２１

２０

１９

１８

１７

Ⅱ

、

-7-

2.3BASICOPERATIONS

2.3.1TurnOn/OfftheUnit

1.PowerOn

◆

Beforepoweron,pleasecheckwhetherthe

poweraccordswiththemarkedspecsofthe
unit,whetherthepowersocketaccords
withthepowerplugoftheunitandwhether
thesoundsourceconnectioncords,output
cordsarecorrectlyconnected.Thenyoumay
connectthepower;

◆

PressPOWERswitchonthefrontpanelofthe

unitandtheindicatorlightonthepanelflickers
Theunitautomaticallyconnectwiththeinput
soundsourcebeforepower-offlasttime,and
automaticallyselectdecodemodeaccording
totheinputsoundsourceformat.

2.Standby

◆

Iftheuserwantstofinishingoperatingina

shorttime,youmaypressSTANDBYbutton
ontheremotecontroltoenterstandbystate.If
youwanttooperateitagain,pressSTANDBY
buttonagaintoexitstandbystate.

3.PowerOff

◆

Ifnotgoingtouseforalongperiod,press

POWERswitchonthefrontpaneltoturnoff
thepower,andtheindicatorlightturnsout.

theVFDscreenislightened.Inmutestate,
pressMUTEbuttonontheremotecontrol,the
unitrestorestooutputsoundandthe"MUTE"
symbolturnsout.UsingtheMULTIFUNCTION
knobonthefrontpanelorpressingMAIN
VOLUMEbuttonontheremotecontrolmay
alsocancelmute.

MUTE

SL

VCD

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

MP3

DIGITAL

OPTICAL

SLEEP

RCL

SR

STAGE

CH

HALL

DISCO

KHZ

MHZ

LIVE

MUTE

Mute

MUTE

SL

VCD

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

DIGITAL

OPTICAL

MP3

SLEEP

RCL

SR

STAGE

CH HALL

KHZ

DISCO

MHZ

LIVE

STANDBY

TurnOn/Off

theUnit

2.3.2Mute

◆Innormalworkingstate,pressMUTEbutton

ontheremotecontrol,

"MUTE"symbolonthetopleftcornerof

theunitissilentandthe

2.3.3SelectInputSoundSourceand
VideoSource

◆Thisunithas1-wayopticalinputterminal,2­waycoaxialinputterminal,1-wayVCDinput
terminal,1-wayDVDinputterminaland5.1CH
inputterminal.Youmayusetheremotecontrol
todirectlyselectinputsoundsource,oruse
MENUbuttonandMULTI-FUNCTIONknobon
thefrontpaneltoselectinputsoundsource
throughmenu.Youarerecommendedtouse
remotecontrolmeans.

RemoteControlMeans

◆PresstheSOUNDSOURCEbuttononthe
remotecontroltoseparatelyselectthesound
sourceofoptical,coaxial1,coaxial2,VCDand
DVDastheworkingsoundsourceofthisunit.
PressTUNERbuttontoselectthebuilt-ituner
ofthisunitastheworkingsoundsource.

MenuMeans

◆PressMENUbuttononthefrontpanelofthe
unitandVFDscreendisplays"SOURCE".

-8-

◆

RotatetheMULTI-FUNCTIONknob,VFD

screenwilldisplay"OPTICAL","COAX1",
"COAX2","DVD","VCD","EXT5.1CH",
"AM"and"FM"symbolswhichrespectively
standsforthesoundsourcesonoptical,
coaxial1,coaxial2,DVD,VCDandexternal

5.1CHterminals,andthebuilt-inAM,FMwave
bandsignals.PressMULTI-FUNCTIONknob
toselectthissoundsource.

Selectvideo

◆

WhenTunerin,Novideoout;WhenVCDAudio

in,theVCDvideoisselected;WhenDVD

、、

audio5.1CHCOAXIALandOpticalin,The
DVDvideoisselected.

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

DIGITAL

OPTICAL

MP3

SLEEP

RCL

SR

STAGE

CH HALL

KHZ

DISCO

MHZ

LIVE

SelectSource

OPTICAL

COAX.1 COAX.2

MUTE

SL

VCD

5.1CHTUNERDVDVCD

Inputchannel PLII

Analog

Signal

Digital
Signal
(from

2/0AC-3 Yes Yes Yes No No

Optical,
Coax1,

Coax2)

Stero

DVD

Yes Yes No No Yes Stereo
VCD Yes Yes No No Yes Stereo
PCM Yes Yes No No Yes Stereo

AC-3 Yes No Yes No No
DTS Yes No No Yes No DTS

NOTE:InDolbyProLogicdecodemode,itis

Dolby
Digital

Ⅱ

DTS DSP

Default
Decode

Dolby
Digital

Dolby
Digital

effectiveonlywhensamplingrateless
than96KHz.

ThisunitcanonlyreceivePCMsignalswith
samplingratelessthan96KHz.Therearetwo
meansofmanuallyselectingdecodemode:
Remotecontrolandmenu.

RemoteControlMeans

PressSTEREO,II,DSP,DTS,DIGITAL

◆

buttonsontheremotecontrol,ifthedecode

modethatyouselectedcannotberealizedto

inputsignal,thesystemstillremainsthe

Originaldecodemode.

MenuMeans

PressMENUbuttononthefrontpanel

◆

continuouslyuntilDECODEappears.Rotate

theMULTI-FUNCTIONknob,andVFDscreen

willdisplay"STEREO,DSP,DOLBY,PROII,

DolbyDigital,DTS",whichstandsforSTEREO,

DSP,DolbyProLogicII,DolbyDigitalandDTS

decodemoderespectively.Youneedtopress

theMULTI-FUNCTIONknobtoconfirmto

enternewdecodemode.
Note:Asforacertaininputchannel,ifsome

decodemodesdonotexist,theoperation

isinvalid.

2.3.4SelectDecodeMode

◆ThisunithasDolbyDigital,DolbyProII,DTS,
DSPandSTEREOdecodemodes,butnot
everyinputchannelhasallthedecodemodes.
Whentheuserswitchestheinputchannelor
changestheinputsignalformat,theunitmay
automaticallyselectthedefaultdecodemode
accordingtotheinputsignalformat.Certainly,
theusermayalsoselectthedecodemode
manually,andpleaserefertothefollowing
tablefortheselecteddecodemodeofeach
channelandthedefaultdecodemode.
Table1:Relationbetweeninputchanneland
decodemode

-9-

HOMETHEATRERECEIVERAV311T

MUTE

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

DIGITAL

MP3

OPTICAL

SLEEP

STAGE

RCL

CH HALL

KHZ

SL

DISCO

SR

MHZ

LIVE

SelectDecodeMode

2.3.5AdjustVolume

◆RotatingtheMULTI-FUNCTIONknobonthe

frontpanelorpressingtheMAINVOLUME
buttonontheremotecontrolmay
synchronouslyadjust6-channellevelandthe
screendisplays"VOLXX"adjustmentrange
0~60.

Note:Themainvolumeautomaticallysetsin20

eachtimewhenpoweron.

AdjustChannelLevel

HOMETHEATRERECEIVERAV311T

MUTE

SL

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

MP3

DIGITAL

OPTICAL

SLEEP

MASTER

VOL

STAGE

CH

HALL

KHZ

DISCO

MHZ

LIVE

RCL

SR

AdjustVolume

2.3.6AdjustChannelLevel

◆◆PressCHANNELbuttonontheremotecontrol

andtheVFDscreendisplaysthe
correspondingchannelsymbol:"FLXXX,FR
XXX,FCXXX,SLXXX,SRXXX,SWXXX",
whichmeansleftchannel,rightchannel,
centrechannel,surroundleftchannel,right
surroundchannelandsubwooferchannel
respectively.

PresstheMULTI-FUNCTIONadjustment

buttonontheremotecontroltoadjustchannel
level.Theadjustmentrangeofchannellevelis

-60~+60

Figure:Thedesignofchannellevelonthescreen

2.3.7AdjustMainChannelTone

◆PressTREBLEandBASSbuttonofmain
channelontheremotecontroltoadjustthe
mainchanneltrebleandbass
respectively.

TREBLE BASS

AdjustMainChannelTone

2.3.8SelectEQMode

◆PressingEQbuttonontheremotecontrolmay
selectFLAT,DISCO,POP,ROCKandJAZZ
moderespectively.Figure:EQmodedisplay

-10-

EQMODE

SelectEQMode

2.3.9DEFAULT

PressDEFAULTbuttonforlong(above3
seconds),andtheunitrestoresthechannel
levelandKaraokevolumeparameterstodefault
Parameters.

1.Karaokevolume
TherearetwomeanstoadjustKaraoke

◆

volume:remotecontrolandmenu.
RemoteControlMeans

PressKARAOKEVOLUMEbuttononthe

Remotecontrol

MenuMeans

PressMENUbuttononthefrontpaneluntil
MICVOLappears,andthenrotatetheMULTI­FUNCTIONknob.

MICVOL

DEFAULT

Calldefaultparameter

2.3.10Karaoke

InsertthemicrophoneintotheMICjackon
thefrontpanelandpushtheMICswitchtoON(if
thereisswitch).Keepanappropriatedistance
Withspeakertoavoidwhistle.

HOMETHEATRERECEIVERAV311T

MUTE

SL

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

DIGITAL

OPTICAL

MP3

SLEEP

RCL

SR

STAGE

CH HALL

DISCO

KHZ

LIVE

MHZ

Karaokevolume

2.Karaokeecho
TherearetwomeanstoadjustKaraokeecho:

◆

remotecontrolandmenu.
RemoteControlMeans

PressKARAOKEECHObuttonontheremote

control.

MenuMeans

PressMENUbuttononthefrontpaneluntil
MICECHOappears,andthenrotatetheMULTI­FUNCTIONknob.

ECHO

2

MenuandMICjack

1

Karaokeecho

-11-

3.Karaoketone

◆PressTREBLEandBASSbuttonofKaraoke
ontheremotecontroltoadjustKaraoketreble
andbass.

After3secondssearchingradiostation,you
mayrotatetheMULTI-FUNCTIONknobto
Adjustvolume.

TREBLE BASS

Karaoketone

BASICOPERATIONS

2.3.11Tuning

Beforetuningoperation,pleaseselect
appropriatewavebandaccordingtothe
Followingsteps.

PressTUNERbuttonofsoundsource

◆

selectionontheremotecontrol;

PressBANDbuttonontheremotecontrolto

◆

selectwavebandordirectlyenterthetuning
FM,AMwavebandthroughmenu.1.Auto
search

RemoteControlMeans

PresstheMULTI-FUNCTIONbuttonforlong

◆

(above1second),andtheunitwill
automaticallysearchradiostationsforwardor
afterward.Untilradiostationwithstrong
signalissearched,itwillautomaticallystop.

PresstheMULTI-FUNCTIONbuttontofine

◆

adjustifnecessary.

MenuMeans

PressMENUbuttononthefrontpaneluntil

◆

VFDscreendisplays"TUNSEEK".

VCD

TUNER

TUNER

2.Autosearchandsaveradiostation

◆◆PressMEMORYbuttonontheremotecontrol

untilVFDscreendisplays"MEMORY".

PressMULTI-FUNCTIONbuttonforlong

(above1seconds),theunitwillautomatically
searchradiostationforwardorbackwardand
thenautomaticallysaveit.Thisunitmay
automaticallysave36FMand12AMradio
stations.

BAND

VCD

◆RotatetheMULTI-FUNCTIONknobandthe

unitwillautomaticallystopaftersearchingthe
radiostationwithenoughstrongsignal. Within
about3seconds,youmaycontinuerotating
theknobandsearchingradiostation.

BAND

3.Saveradiostationmanually

◆PressMEMORYbuttonontheremotecontrol
andthenNUMBERbuttonstosaveradio
station.Ifthesavedradiostationnumberis
over9,pleasepress2numberscontinuously.

-12-

◆Aftercompletelysaving,PRESETsymbolon
thescreenislightened.

HOMETHEATRERECEIVERAV311T

1

MUTE

SL

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

DIGITAL

OPTICAL

MP3

SLEEP

RCL

SR

STAGE

CH HALL

DISCO

KHZ

MHZ

LIVE

MULTI-FUNCTIONknob

2

TheExplanationofMODEbutton

Thisunithastwoworkingmodesinthe

Receivingstatus:

AUTO/MANUAL

1InAUTOworkingmode,ifyouselectFM

、

Waveband,thisunitwillautomatically
recognizetheradiostationprogramismono
signalorstereosignalandkeepthemonoor
stereoReceivingstatus.

2Ifthereceivedradiostationprogramhas

、

Loudernoiseorcacophonyinstereostatus,
youmayswitchtoMANUALworkingmode.In
thisway,theunitisinmonoreceivingstatus
todecreasenoiseandcacophony
generally.Youmayswitchthetwoworking
modesthroughMODEbuttonontheremote
control.

4.Callthesavedradiostation

◆

PressNUMBERbuttonstocallthesavedradio

stationdirectly.

◆

PressFORWARD/BACKWARDbuttonstocall

thesavedradiostation.Calltheformeror
behindoneofthesavedradiostation.

◆

Aftercompletelycalling,"PRESET"symbolon

theVFDscreenislightened.

5.SelectAMstepvalue

◆

PressingAMSTEPbuttonforlong(above3

seconds)mayswitchtheAMstepfrequency
value,thatis,whentuningthestepvalueeach
timeis9KHzor10KHz.

MEM

Remotecontrol

AntennaConnection

YoumayuseouraccessionalAMandFM
indoorantennawheninbadreceivingeffect.
Generallyspeaking,theseantennaecansupply
enoughsignalstrength.

ConnecttoAMRoundAntenna

1Pushthejackbuttontoopenit.

、

2ConnecttheAMroundantennacordtoAM

、

ANTandGNDterminals.

3Letgooffthebuttontoclampthespeaker

、

cord.Pullthecordlightlytocheckthe
connectionIsrightornot.

VCD

Callthesavedradiostation

2.3.12Tuning(Continued)

-13-

HowtoConnect

Pushthejackbuttontoopenit.

1
3

2

1

Insertthespeakercord.

2

Letgooffthebuttontoclamp

3

thespeakercord.

4ConnecttheAMroundantennatothestand.、

4

AMroundantenna

Stand

5

5AdjustthedirectionofAMroundantennato

、

getthebestreceivingeffect.

Rotate

NOTE:

DonotusetheoutdoorandindoorFM

Antennaeatthesametime.

GND(Grounding)terminal

Inordertoensurethesafetyanddecreasethe
interference,pleasewellconnecttheGNDterminal.
Thebettergroundingmethodisinsertthemetalpole
intowetground.

2.3.13ChannelDelay

◆

Channeldelayoperationisonlyavailablein

DolbyDigital,DTSandDolbyProLogicII
modes.

◆

PressDELAYbuttonontheremotecontrol.

WhenVFDscreendisplays"CXXMS",use
MULTI-FUNCTIONbuttontoadjustthecentre
channeldelay.Theadjustmentrangeis0~5ms

◆

PressDELAYbuttonontheremotecontrol

again.WhenVFDscreendisplays"SXXMS",
useMULTI-FUNCTIONbuttontoadjustthe
surroundchanneldelay.Theadjustmentrange
is0~15msinDTSandDolbyDigitaldecode
modes,and15~30msinDolbyProLogicII
decodemode.

NOTE:
1AMroundantennashouldbeplacedfaraway

、

fromtheequipment.Youmayputuponthe
walloronthebookshelf.

2AMroundantennaandoutdoorantennacan

、

beusedatthesametime.

ConnecttoFMAntenna

ConnecttotheindoorFMantenna

ConnecttheaccessionalindoorFMantenna

to75UNBAL.FMANTterminal.

Ω

DELAY

Channeldelay

2.3.14NoiseTesting

-14-

◆◆Duringsystemworking,itisusedforusersto

adjustlevelbalancebetweenchannelsin
multi-channelstate.

Innon-STEREOdecodemode,pressTEST

buttonontheremotecontroltoenternoise
testingmode.Theunitwilloutputnoise
accordingtothesequenceofleft,centre,right,
surroundrigntandsurroundleft.Thelasting
periodofeachchannelis2s,duringwhich
timeusersmaypresstheMAINVOLUME
buttonontheremotecontroltosynchronously
adjust6-channellevel,andmayalsopress
MULTI-FUNCTIONbuttontoadjusteach
cnahhel'slevel.Toexitnoisetestingmode,
pleasepressTEST buttonagain.

SPK.

1

Selectspeakermode

2.3.16Headphone

◆Thisunitiswithindividualheadphoneamplifier.
Ifnecessary,pleaseinserttheheadphoneplug
intotheheadphonejackonthefrontpanel.In
thisstate,changingdecodemodeisinvalid.

VCD

TEST

Noisetesting

2.3.15SelectSpeakerMode

◆PressSPEAKERMODESETUPbuttononthe
remotecontrol,when"SPSMALL"or”SP
LARGE"appears,pressingMULTI-FUNCTION
buttonagainmaychangetheleft/rightspeaker
mode.Pressspeakermodebuttononthe
remotecontrol,when"SUBON"or"SUBOFF"
appears,pressingMULTI-FUNCTIONbutton
againmaysetwhetherthereissubwoofer
speakermode.

Note:Theselectionof"Large"or"Small"isset

byspeakercalibraterandbassplaying
ability.Whensubwooferspeakerand
subwooferoutputterminalareconnected,
youmayset"SUBON",orelse,"SUB
OFF".Whenspeakermodeissetin
"SMALL",subwooferspeakermustbeset
in"ON".

HOMETHEATRERECEIVERAV311T

MUTE

SL

SOUNDFIELD

STEREO

PRESET

TUNER

STERO

STADIUM

DIGITAL

MP3

OPTICAL

SLEEP

RCL

SR

STAGE

CH HALL

DISCO

KHZ

MHZ

LIVE

Headphone

-15-

2.4ACCESSORIES

UserManual

◆

RemoteControl

◆

AVCord

◆

◆

◆

◆

◆

''

Jacktomini-jackadapter

#

7AAAbattery
Warrantycard
FM/AMantenna

1pcs
1pcs

1pcs
1pcs
2pcs

1pcs
1suit

2.5SPECIFICATIONS

1RatedOutputPower

、

MainChannel(1kHz/4,RMS,TotalHarmonicDistortion1%):80W+80W
CentreChannel(1kHz/4,RMS,TotalHarmonicDistortion1%):15W
SurroundChannel(1kHz/4,RMS,TotalHarmonicDistortion1%):15W+15W

2Separability(1kHz,RatedCondition):

、≥

3TotalHarmonicDistortion(1kHz,RatedCondition):

、≤

4EffectiveFrequencyRangeunderLimitedGains(NormalWorkingCondition):

、

MainChannel20Hz~20kHzdB
Centre/SurroundChannel20Hz~20kHzdB

5Signal-to-NoiseRatio

、

MainChannel(Input600Short-Circuit,Aweighted):80dB
CentreChannel(Input600Shout-Circuit,Aweighted):73dB
SurroundChannel(Input600Shout-Ciucuit,Aweighted):73dB

6TUNER

、

Frequencyrange:FM:65-74MHz,87-108MHz

7InputSensitivity(RatedCondition)

、≤

8LoadImpedance

、Ω

POWER

1PowerSupply:~220V1050Hz

、±％

2MaximumPowerConsumption:500W

、

OTHERS

1NetWeight:About8kg

、

2Dimensions:420337135mm

、××

Ω≤

Ω≤

Ω≤

40dB

0.7%

+1

-3

+1

-3

Ω≥

Ω≥

Ω≥

AM:500-1611KHz(9KSTEP)

520-1710KHz(10KSTEP)

100mV

A114~8

-16-

ChapterThreeUnitCircuitPrinciple

SectionOnePrincipleoftheplayer

AV311T(RU)isanadvancedpoweramplifierlaunchedintomarketrecently.ItiswithDTS/AC-3
digitaldecodefunction,whichmakessoundprocessingmoreperfecttoeffectivelycontrolthedistortion
andnoiseinthecourseofaudiosignal.

3.1.1Compositionoftheplayer

1.Signalprocessingboard:gating,frontstageamplifyingofsignalandfrontstageprocessingof

Karaokesignal.

3.Controlpanel:VFDdisplay,menubuttonandmainvolumecontrol.

4.Powerboard:providevoltagerequiredbyeachunitcircuit,andperformtheplayerprotection

function.

5.Poweramplifierboard:poweramplifyingof5.2CHsignaloranalogsignal.

6.Headphoneboard:Karaokeinputandheadphoneoutputsignalamplifying.

7.Videboard:input/outputswitchoftwo-channelcompositevideoandS-videovideosignal.

3.1.2Functionandfeatures

Simpleoperationpanelinterface;thepaneloftheplayerhasonlyonepowerswitchbutton,menu

◆

buttonandalargeknob,simpleandclear;

◆

WirhDTS/AC-3decodefunction;

◆

Optical,coaxialsignaldecodefunction;

◆

Built-in5-channelpoweramplifying,adaptabletoAC-3/DTSandstereomusicreplay.Main

channel110W.Centre/surround22Wwithpowerfulpower;

◆

With6-channelvolumecontrolandseparatelevelcontrol,andalsowith7-bandelectronic

equalization;

◆

WithmultipleelectronicEQmodes,adaptabletodifferentmusicalstyles;

◆

Digitalsoundfielddelayfunction;

◆

Withtuningfunction;

◆

Withintelligentprotectionofover-currentandover-voltage

◆

Karaokefunctionandheadphoneoutput;

-17-

220V

Signaloutput

Xs1

Xl100

Powerboard

Transformerentry-level

Xs2

SWITCH

Xs3

Xs4

SWM
RLY0
P_RC

OVER

VC+
GND

GND

Secondarycoil

Secondarycoil

L2
R2

C2

Sl2
Sr2

VC-

~8.5V

GND

~8.5V

+12V

GND

-12V

RLY
P_RC

P_LRM

P_CSM

SWM

L1
R1

C1

Sl1

Sr1

D+5V
DGND

L1

R1

PH_SW

GND

MIC

Videoboard

xs101

xp20

Xs100

Xs22

Xs101

Signalboard

Xp17Xp16

Xs16

Xs17

Decodeboard

RDSoutlet

Xp14

Xs14

LAT
CE
CLK
DATA
DO

P_DIST
OK_DAT
OK_CLK

P_KT

REM

DST

DCK

DDA

Transformer

Xp25

Micorearphoneboard

Viewboard

+5VD

GND

RLYC
NC
DDA
DCK
DST

FAN

REMMOTE

DIGITALAUDIOINPUT

VCD

DVD

5.1CH

VCD

DVD

VCD

DVD

VIDEOBOARD

1
2
3
4
5
6

TUNER

6

6

6

Digital
audio

L

R

L

R

CD4052

CD4052

1
2
3

1
2
3

4052-A/4052-B

2*COAXIAL/OPTICAL

L/R

4052*2

L/R

5.1CH(L/R/SL/SR/C/SW)

OK_CLK/OK_DATA

9
8
7
6
5
4
3
2
1

L/R

DO/CLK/DAT/CE

4558_B

4558_A

+5V

PH_SW

PH_L
PH_R

Dual-decodeIC,
CPU

CPU

PT2315

MIC_VOL

TONE

ECHO
adjustment

Amplify

LM4880

P_DISP

Straightthrough

ECHO

PT2399

CPUI/O：

INPUTSET

5.1CH
4053_INT

L/R/SL/SR/C/SW

CLK/DAT/LAT

TUN_L/TUN_R

REMOTE

DCL/DDA/DST

DISPLAYBOARD

2*LED

PT6311

Mix&buffer

4558

Echovolume

CLK/DATA/LATDO/CE
OK-CLK/OK-DATAP-KT
DCL/DDA/DATAREMOTE
P-LRM/P-SCMP-RLYP-DISP
KM

0_LEVEL

2*KEY

VFD

FUNVOL

REMOTE

6311I/O：

62446I/O：

VOL&TONE

M62446

FAN

SL/SR

L/R

C

SW

KM

FAN

TUN-L/TUN-R
FANRLYC

4052-A/4052-B

5.1CH4053-INT

Mix&buffer

4558

Mix&buffer

5532

Mix&buffer

4558

+12V
AGND

Power

-12V

+6.8V

~VS
~VS

+5V

P_LRM/P_SCM

SW_OUT

+6.8V
AGND

-6.8V
+5V
+5VD

Load
detect

Vc+

AGND

Vc-

AMPBOARD

L
R

C
SL
SR

Relaydrive

RLYC

Mainpower
amplifierboard
power

POWERBOARD

Preposition
power

NGD

Vs-

Vs+

Central
surround
power

SWmuteandrelay
statedetect

L

R

C

SL

SR

MICPHONEBOARD、

SectionTwoUnitCircuitPrinciple

3.2.1Signalprocessingboard

1.Inputselectioncircuit

AV321T(RU)has6kindsofinputmeansinall:opticalinput,coaxialinput,CD,DVD,5.1CHand
tuninginput.Digitalsignalsofoptical,coaxialinputofthisplayeraredirectlysenttopoweramplifier
boardforprocessingthroughflatcable.AnaloginputselectionofAV321T(RU)isfulfilledthroughan
electronicswitchCd4052(N101)anditstruthvaluetableisshownasthefollowing:

Estate

状态

PIN

引脚

A 1 0 1
B 1 1 0

AV321T(RU)has3kindsofinputstates:tuning,VCD,DVD,andtheyarecontrolledthrough4052-

A,4052-Bsignalrespectively(refertotruthvaluefordetails).Signalsafterbeinggatedoutputfrompin3

VCD DVD

Tuning

andpin13ofN101,andthenoutputleft/rightmainchannelsignalfromitspin1,12throughN111CD
4052todecodeboardforsignalprocessing.

Analogsignalinputin5.1state:thegatingof5.1analogsignalinputofAV321T(RU)iscontrolledby
twoICCD4053(N102,N103),controlpin9,10,11ofCD4053areallcontrolledbythe5.1CHsignal
outputtedfrompin4ofM62446(N104),when5.1CHsignalishighlevel,thegatingisanalogsignalinput
of5.1state;inthisstate,thereisnodigitalsoundfield,allsignalsarestraightthrough;when5.1CHis
lowlevel,thegatingisthesynthesizedsignalafterdecoding.

Straightthroughanddigitalsoundfieldswitchcontrol:AV321T(RU)hastwodifferentmodesof
straightthroughanddigitalsoundfield,anditsgatinginputiscontrolledbyN111/CD4052andN102/CD.
Whencontrolsignal4053-INTishighlevel,foritisconnectedtotheenabledendofN102,thisICisin
nonworkingstate,mainchannelsignalsoutputthroughpin5,11ofN111anddirectlysendtoM62446
forprocessingtooutputHi-Fimusicalsignals.When4053-INTislowlevel,mainchannelsignalsare
senttodecodeboardfordigitalsoundfieldprocessingthroughXp17,andN102isalsoinworkingstate.

2.Karaokesignalprocessingcircuit

ForkaraokesignalssentfromMICbaseboard,aftercouplingandamplifying,onepathissentto
volumeandtoneadjustmentICPT2315(N203)forprocessing,thenafterechoanddelayadjustment

- 20 -

throughPT2399(N204),itissenttopoweramplifierboardforsmallsignalamplifyingthroughband­Passfilter.PT2315iscontrolledbyMCU,sousersmayadjusthisdesiredKaraokeeffectatwillthrough
remotecontroller.

Anotherpathsignal,afteramplifyingrectification,controlsaswitchtriodeV2019014tocontrolthe
high/lowlevelofdetectsignalP-KTtofulfilthedetectingofKaraokesignals.WhentheinputtedKaraoke
signalislargeenough,theDCafterbeingrectifiedmakestriodeV201onandthenpullsdownP-KT
signal,whichmeansthatthereisKaraokesignalinput.Now,KMcontrolsignalislowlevel,triodeV101
2N5401,V102S8050bothcutoff,KaraokesignalsenterICN107NE5532foramplifyingthrough
couplingcapacitorC147,C149,thentheyaresenttoleft/rightchannel;whenCPUcannotdetectsignals
inacertainperiod,P-KTishighlevel,nowKMcontrolsignalofCPUchangesintohighlevel,triode
V101,V102arebothontomakeKaraokesignalshortcircuittoground,systemmutesKaraoekpart
automaticallytopreventtheinfluencetosoundeffectcausedbynoise.

3.Fanstartingcircuit

Whenpoweramplifieriswithload,forpowerislargeandtemperatureriseishigh,thisplayer
adoptsfantoperformheatradiation.Whenvolumeismorethan45dB,FANsignalsentoutfromcontrol
paneN101changesintohighlevel,V1039014andV105S8050areontoformpowersupplyloopoffan.
Whentheconnectedloadisheadphone,controllinePH-SWishighlevel,V1049014isontopulldown
FANsignal,sonomatterhowisthevolumeofsystem,fanwillnotstartup.

3.2.2Decodeboard

Mainelementfunctionofdecodeboardisshownasfollows:

ICSM8958AC25P(N116):controlcoreofMCUsystem

◆

IC493264(N105):highperformancedigitalaudiodecoder,includingDOLBYdecode,DTS

◆

decodeandDSPprocessing

ICCS8415(N106):serialdigitalaudiosignalreceiver

◆

ICCS5340(N108):2-channelA/Dconverter

◆

ICCS4360(N107):6-chanelD/Aconverter

◆

IC24C02(N115):statememorizer

◆

IC74HC04(N101):6-channelphaseinverter

◆

ICBM1117-3.3(N109):3.3VvoltageregulatingIC,whichprovidespowerforCS8415,Cs4923

◆

Workingprinciple:foropticalandcoaxialsignals,afterbeingfilteredbyinductor,capacitor,
reshapedbyphaseinverter74HC04(N101),theyaresenttoserialaudiodigitalsignaltoreceivesignal
inputpin4,1214ofICCs8415(N106),thenconverseserial digitalaudiosignaltoPCMsignalthrough
thisIC,andoutputfrompin16(samplingspeedsignal),17(mainchannelclocksignal),18(audiodata
signal)ofthisICtopin25(samplingspeedcontrolsignal),pin26(clocksignal),22(PCMdatainputport

- 21 -

1)ofdigitalaudiodecodeICCs493264(N105)fordataprocessing.

Analogsignalsofleft/rightchannelaresenttodecodeboardthroughflatcableXs17,afterfront
stagesmallsignalprocessing,thensenttopin10,12ofICCs5340(N108)forA/Dconversiontochange
analogaudiosignalintoPCMsignal,thensentfrompin4(audioPCMsignal),17(samplingspeed

signal),18(clocksignal)ofN108topin27,28,29ofN105,thatis,inputfromanotherPCMinputportof

N105fordataprocessing.

Therefore,digitalsoundfieldprocessingofanalogsignalandprocessingofcoaxial,opticalaudio
digitalsignalareseparate,ifonlyonepathworksabnormally,thepossibilitythatproblemappears
beforeN105islarge.

CS493264(N105)iswithpowerfuldigitalsoundfieldprocessingfunction,allDSPprocessing,Pro.
LogicIIprocessingandDOBLY/AC-3processingareallperformedinsideunderthecontrolof
MCU/SM8958AC25P(N116).

AudioPCMsignalafterbeingprocessedbyCS493264(N105)issenttoCS4360(N107)forD/A
conversiontorestorePCMsignalinto6-channelanalogsignal,thenfilterhighfrequencysignaloutside
therangeofaudiofrequencythroughaband-passfilter, thensenttoinputgatingpartforselectioninput.

Actedashecoreofthewholesystem,MCU/SM8958AC25P(N116)hasimportantfunction.All
controlsignalsaresentoutbyit,anditwilldetecteachdifferentsignalanduserorderatanytimeto
controlactionofeachpartofmachine.IfthisIChastrouble,theplayerwillbenotabletoworknormally.

Inaddition,thisplayerhasnoautosearchfunction,butiscanautomaticallysaveandmemorizethe
workingstatelaettime,andenterthepreviousworkingstatewhenpoweronnexttime.

Thisplayeriswithtuningfunction,whichprovidesagoodfunctionselectionforusers.Itdirectly
controlsdigitaltunerreceiving(AM/FM)signalthroughMCUN116,andthenoutputsthroughpower
amplifier.ClockanddatelineofdigitaltunerisusedtogetherwithLM62446(N104),anothertwocontrol
linesaredirectlyconnectedtoN116,TUNERL,TUNERRsignalafterbeingprocessedbydigitaltuneris
directlysenttoCD4052(N101)forgatinginput.

3.2.3Controlpanel

ControlpanelismainlycomposedbyVFDdisplayscreen,driveICPt6311(N101),infraredremote
controllerHSOO38A2(N102)andindicatorlightdisplaycircuit.Itcompletesman-machineconversation
andworkingstatedisplaymainly.Thecomposedblockdiagramisshownasthefollowingfigure3.2.3.1:

UnderthecontrolofMCU,throughDSTstate,DCKclock,DDAdata,controlPT6311(N101),
displayworkingstateoftheplayerandfanstate,andreceiveusercontrolordersentoutbyPT6311
(N101),controlthecontrolledcircuitoftheplayertomaketheplayerworkinindicatedworkingstate.
Whenuserareoperatingpanelbuttons,controlorderissenttoPT6311(N101)throughkeyboard
scanningcircuit,PT6311(N101)outputscontroldatatoMCUthroughcodingdriveinsideandrealizes
thecontrolofcontrolledcircuitthroughMCU,andcontrolsVFDthroughPT6311(N101).

- 22 -

VFD

Display

Buttoncontrol

N101

PT6311

DDA

DCK
DST

MCU

Panelindicatorlightcontrolarea

Figure3.2.3.1Controlpanelcircuitblockdiagram

Remotecontrolreceiving

VFD101isvacuumflourescentdisplayscreenandthemostdistinctfeatureishighbrightness.The
workingprincipleissimilarwiththatofkinescopeofTVset.Pin1,2,46,47arefilamentpowersupply,
MCUcontrolsSEGelectrodethroughthecontrolofPT6311(N101)tomakecharactersofcorresponding
workingstatedisplayonscreen.

RemotecontrolreceivingcircuitismainlycomposedofremotecontrolreceiverHS0038A2(N102),
inwhicjpin1isgrounded,pin2powersupplyend,pin3issignalreceivingoutputpinandsenttoMCU
directlytocontrolcorrespondingcircuit.

3.2.4Powerboard

Thefunctionofpowerboardistoprovideallkindsofworkingvoltagerequiredbyeachunitcircuit.
Shownasinthefigure3.2.4.1AV321T(RU)adoptslarge-powerroundtransformer.Centreandsurround
channelofAV321T(RU)adoptCD1875and2TDA2052respectively,TDA2052ismonochannelpower

×

amplifyingandadoptsseparatepositive/negativepowersupply.

～ 26 V

～ 220V 50HZ

Figure3.2.4.1Powerblockdiagram

Paneldisplay

～ 38V

～

-23 -

16.3V

～2.2V

Rectification
Filtering

Rectification

Filtering

Filamentvoltage

Left/rightchannel
poweramplifying
level

C,SL,SRchannel
poweramplifying
level

ThetwogroupsAC35Vvoltageoutputtedfromthefirstsublevelwindingoftransformer,after
rectificationandfilteringof8In5404(VD100VD107)diodeand2electrolyticcapacitor(15000uF/63V,

～

C108,C109),positive/negative53Vpowerisachievedtosupplypowerforleft/rightchannel.

ThetwogroupsAC17Vvoltageoutputtedfromthesecondsublevelwindingoftransformer,after
rectificationandfilteringof4IN5404(VD111~VD114)diodeand2electrolyticcapacitor(4700uF/35V,
C141,C142),positive/negative23VpowerisachievedtosupplypowerforSL/SR/Cchannel.Forother
ICandoperationalamplifiers,aftervoltageregulatingof3-endvoltageregulatorL7812(N101),L7912
(N102),positive/negative12VpowerisachievedtosupplypowerforotherIC.

3.2.5Poweramplifierboardandprotectioncircuit

1,L,Rchannelpoweramplifyingcircuit

L,Rchannelpoweramplifyingcircuit:L,RmainpoweramplifyingcircuitofAV321T(RU)is
composedofdiscretecomponent,thecomposedblockdiagramisshownasthefollowingfigure3.2.5.1
(takeLchannelforinstance):

ACnegativefeedback
R121,R108,C105

Compositepower
amplifyingV132,V112

LIN

V101
V115

Mute

Differenceamplifying
levelV102,V103

MirrorimageconstantcurrentsourceV104,
V107,VD102,VD103

Figure3.2.5.1Poweramplifierandprotectioncircuitdiagram

Voltage
amplifying
levelV105

Temperature
compensation
levelV106

Compositepower
amplifyingV133,
V113

Speaker

Relay

Lchannelsignal,throughR101,R103,C101coupling,issenttoBelectrodeofdifferential
amplifyingstageV102,V102andV103composethedifferentialamplifyingcircuitofsingle-endinput
andsingle-endoutput.AudiosignalisoutputtedfromCelectrodeofV102toBelectrodeofvoltage
amplifyingstage,thentocompositepoweramplifyingstageaftervoltageamplifying.V104,V107,
VD102andVd103composemirrorconstantcurrentcircuit.VD102,VD103provideV104,V107with
constantbaseelectrodecurrent.EmitterelectroderesistanceofV104decidesworkingcurrentof
differentialamplifyingstage,emitterelectroderesistanceofV107decidesworkingcurrentofvoltage
amplifyingstage.V132andV112composemultipleunittubeamplifyingtomakefinalstageofpower
amplifierhavepowerfulcurrentamplifyingability,andtheycomposepositivehalfcycleamplifying
waveform.V133andV113composenegativehalfcycleamplifyingwaveform.Thefunctionof

-24 -

Temperaturecompensationtubeincircuithastwo:firstly,itisthebaseelectrodebiasofupper/lower
geminatetransistoranditsworkingstatedecidesstaticworkingcurrentofcompositepoweramplifying
stage,thatis,throughadjustingtheonstateofV106,staticworkingpointofcompositepoweramplifying
stagemaybeset.ThecommonmeansischangebaseelectroderesistanceofV107;itmayalso
automaticallyadjustworkingstateofcompositepoweramplifyingstageaftertemperatureincreases.
Theadjustmentprocessisasfollows:

Totalcurrentofoutputlevel=workingcurrent+leakagecurrent

Whentemperaturebecomeshigh,leakagecurrentincreasestoleadtostaticworkingpointdrift
(unfavourable).

Atthesametime,theleakagecurrentofV106increases,Ucedecreasestomakebiascurrentof
outputleveldecrease,workingstatechanges,workingcurrentofbackstagedecrease,andtemperature
compensationfunctionisrealized.

InpoweramplifyingcircuitofAV321T(RU),voltagenegativefeedbackisintroducedandcomposed
byR121,R109,C105,whichmaystabilizestaticworkingpointofdifferentiallevel.AV321T(RU)adopts
directoutputmeans,R111andC116connectedonoutputendcomposeZobelnetwork,whichmay
preventhighfrequencyself-excitationcausedbyACinductivereactanceofspeakersoundcoil.

2.Mutecircuit

WhenpressingMUTEbuttononremotecontroller,afteroptical-electricconversionofsignal
conductedbyinfraredreceiver,amutesignalisachievedandsenttoMCU,P_LRMhighleveland
P_CSMlowlevelmuteorderissentoutfromMCUatthesametime,P_LRMhighlevelmakes2N5401
(V115),S8050(V101),S8050(V116)on,leftandrightchannelsignalareshort-circuitedtoground,and
mutecontrolfunctionofleft/rightchannelfinishes;P_CSMlowlevelmakes9014(V150)cutoff,2N5401
(V130)andS8050(V131)areon,centerchannelsignalisshort-circuitedtoground,andmutecontrol
functionofcenterchannelfinishes;atthesametime,P_CSMlowlevelmakes9014(V151)cutoff,
voltageofpin5ofTDA7265ospowervoltage,TDA7265internalmutecircuitworkstoreachsurround
channelmuteeffect.

3.C,SR,SLpoweramplifyingcircuit

Comparedwiththeformermodels,thethreechannelsofAV311T(RU)adoptspecialaudiopower
amplifyingICCD1875CZ(N104)andTDA7265(N106).AsforTDA7265(N106),ithas11pinsinall,pin
3,1and6areitspositive/negativepower pin;pin11and7areitsin-phaseinputterminal;pin10and8
areitsreverseinputend,theratedoutputpowerofeachchannelofthispowerICmaybeupto15W,
withautomutefunctionwhenpoweron;asforCD1875CZ(N104),ithas5pinsinallandisagood
performancepoweramplifyingICwith15Wpoweroutputinratedstate.pin5and3arepositiveand
negativepowerpin.

-25 -

4.Protectioncircuit

ProtectioncircuitofpoweramplifierofAV321T(RU)isdesignedonpowerboard.Theprotection
meansofL,R,CchannelisfulfilledthroughdisconnectingdelayY100whenstartinguptodisconnect
theoutput.SR,SLchannelachievesprotectionfunctionthroughmute.AV321T(RU)iswithpower-on
delayprotection,centralpointover-voltageandover-currentprotection,standbyprotection.

(1)Power-ondelayattractingprotectioncircuit:theworkingofcircuitisunstablewhenpoweron,
andtheproducedimpulsecurrentdoesgreatharmtospeakerandpoweramplifyingcircuit,sodelay
attractingprotectioncircuitisset.Power-ondelayattractingprotectioncircuitisdividedinto2steps:the
firststep:C,L,Rchannelanditsworkingprocessisasfollows:forACoutputtedfromtransformer,after
rectificationandfilteringofVd113,C110,+22Vvoltageisachieved,chargesC115throughR108tomake
Vd111struckthroughreverselyandtomakeV105,V104forwardson,relayY100ismadeattracting
finallytoreachdelayattractingeffect.Thesecondstep:SR,SLchannelperformspower-onanti-impulse
protectionthroughthefollowingmeans: whenpoweron,resetofmachinesystemhasnotfinished,
P_CMSmayprobablybehighleveltomaketriodeV137ontocausepower-onimpulsesound,nowa
+VSlevelisaddedonBelectrodeoftriodeV137throughresistorR163tomakeitincutoffstateatthe
momentofpower-on;a-VSlevelisaddedonpin3ofTDA2052throughresistorR189tomakeTDA2052
inmutestatetoavoidtheimpulsetoloudspeaker;aftermachinesystemresets,MCUoutputsaP_CMS
lowlevelsignaltostillmakeV137cutoff,pin3ofTDA2052isstill-VS,TDA2052outputsmute.After
delaystartupofmachineissuccessful,outputsignalP_CMSofMCUswitchesintohighlevel
immediately,nowrelayhasattracted,RLY0isgroundedthroughrelaytomakeV137on,voltageofpin3
ofTDA2052isabout5Vhigherthannegativepowervoltage,SL/SRchannelrestoresnormaloutput.
TDA2052chip,undertheconditionthatloadisnotconnected,willappearcomponentDC,sofalseload
R121,R122isaddedinpowerboardsurroundchannel.

(2)Over-voltageprotection:onoutputendofeachchannel,anover-voltagesamplingresistoris
connected,LchannelisR116,RchannelisR117,CisR118,SRandSLareR120andR119respectively,
onlyone channel’scentralpointvoltageismorethan+3.5Vorlessthan-3.5V,V101orV102isonto
maketheirCelectrodevoltagedecrease,BelectrodeV103ispulleddowntomakeV103on,relay
disconnectsfinally,andover-voltageprotectionfinishes.Theworkingprocessisshowninthefigure

3.2.5.2:

Over-voltage
sampling
resistoris
connectedto
eachchannel

LchannelR116

Whenmore
than+3.5V

than-3.5V

V101ison

V102ison

Celectrode
voltage
decreases

V103ison

Relay
disconnects
andprotection
startsupWhenless

Figure3.2.5.2Over-voltageprotectionflowchart

-26 -

(3)Short-circuitprotection:anover-currentsamplingtriodeisconnectedtooutputloadresistorofL,
Rchannel,samplingtriodeofLchannelisV114(onpoweramplifierboard),loadresistorisR126,
R127(onpoweramplifierboard).C,SR,SLchannelpoweramplifyingIChasbeenwithover-current
protectioninside.Onlyover-currentappearsinLchannel,thepressuredropproducedonR126,R127
willincrease,oncethepressuredropofR129(onpoweramplifierboard)ismorethan0.7,V114willbe
on,V103willalsobeon,relaydisconnectsfinally,andshort-circuitprotectioncompletes.Theworking
processisshowninthefigure3.2.5.3:

Over-current
samplingtriode
isconnectedto
eachchannel

Lchannel
V114

Whenover-current,
pressuredropon
R126,R127
increases

Figure3.2.5.3Short-circuitprotectionflowchart

V114ison

Celectrode
voltage
decreases

Relay
disconnects
andprotection
startsup

V103ison

Similarly,whenRchannelhasover-current,voltageonR159(onpoweramplifierboard)willbe
morethan0.7Vtomake(onpoweramplifierboard)V129on,alsotomakeV103on,andrelay
disconnectfinallytoachievethepurposeofprotectingloudspeaker.

3.2.6Videoinput/outputboard

AV321T(RU)iswithtwo-channelcompositevideoinput(VCD,DVDor5.1CH);two-channelS-video
videoinput(VCD,DVDor5.1CH);1-channelcompositevideooutput(VCD,DVDor5.1CH);1-channel
S-videovideooutput(VCD,DVDor5.1CH).

Input/outputswitchofvideosignalisrealizedthroughtwoelectronicswitchCd4052(N100,N101).
WhenVCDchannelisselected,pin1and2ofN104(M62446)ofsignalprocessingboardsendoutAand
Bhighlevelcontrolsignal,accordingtoworkingprincipleofsignalprocessingboardinsection2,nowA
andBalsocontrolgatingofCD4052ofaudiopart,thatis,audiochannelalsoselectsVCDchannel,thus,
thesynchronousswitchofaudioandvideoofVCDchannelisrealized.

Similarly,forsynchronousswitchofaudioandvideoofDVDchannel,pin1and2ofN104(M62446)
ofsignalprocessingboardsendout1and0controlsignalofAandBtofinishthecorrespondingswitch.
When5.1CHisselected,itisequaltoselectingDVDchannel.

CompositevideosignalisoutputtedthroughtriodeV100(1015),V101(1015)andV102(1015)
outputS-videosignal.

3.2.7MIC,headphoneboard

Workingprincipleofmicrophoneparthasbeenshowninsection2ofchapter2,sowewillnot
repeathere.

Headphonepart:LandRchannelsignalisoutputtedfrompin31and32ofsignalprocessingboard

-27 -

N104(M62446),throughcouplingcapacitorC103,C104,thensenttopin2and6oftwooperational
AmplifiersofN100(LM4880),afteramplifying,headphonesignalisoutputtedfrompin1and7ofN100
respectively.

Whenheadphoneisinserted,MCUdetectsthatPH_SWsignalishighlevel,thecorresponding
controlsignalP_LRMishighlevel,mainchannelismuted;P_RCcontrolledbyCPUchangesintohigh
level,relayonpowerboarddisconnects,RLY0ofpowerboardispulledupto+5V,P_RLYcontrolsignal
changesintohighlevel,triodeV101(S8050)ison,pin5ofheadphoneamplifierN100has+2.5Vvoltage
input,headphoneamplifierisinworkingstatetomakeV104ofsignalprocessingboardonatthesame
time,V103andV105cutoff,powersupplyloopoffaniscutoff,whenvolumeisover45dB,fanrotation
isforbiddentofacilitatetolistenwithheadphone.

Whennoheadphoneisinserted,MCUdetectsthatPH_SWsignalislowlevel,thecorresponding
controlsignalP_LRMislowlevel,P_RCcontrolledbyCPUchangesintolowlevel,relayonpowerboard
attracting,RLY0ofpowerboardispulleddownto0V,P_RLYcontrolsignalchangesintolowlevel,
triodeV101(S8050)cutsoff,pin5ofheadphoneamplifierN100has0Vvoltageinput,headphone
amplifierisinstandbystate.CentralandsurroundchannelofsignalboardvolumeadjustmentICN104
(M62446)isopenedtomakepoweramplifieroutputsignalanddriveloudspeaker.

-28 -

SectionThreeServicingCases

3.3.1Servicingcases

[]Example1Symptom:power-onprotection

Description:afterpoweron,relaydoesnotattractand"systemabnormal,autoprotection"displays.

Analysisandtroubleshooting:afterpoweron,systemprotects,relaydoesnotattract,shownasin
thefigure3.3.1.1;testL,R,C,SL,SRofpowerboardflatcableholderXP8andthereisnoDCoutput,
testpin1ofpowerboardflatcableholderXS7anditishighlevel,pin2islowlevel,Celectrodeoftriode
V101ishighlevel;itisknownfromtheabovetestthattheprotectionisnotcausedbyover-currentand
overvoltage(youmayalsounplugflatcableholderXP7andXP8andcheckwhetherithasprotection).
TestpositivevoltageofdiodeVD112anditis0.Wejudgethatrelayhastrouble.Afterchangingrelay,
troubleisremoved.

R105
10K

V101

C110

220u/35V

V102
C9014

R116

51K

R117
51K

R118
47K

R119
47K

R120
47K

C122

104

220u/16V

220u/16V

C113

C114

1

2

XL101A

R106

4.7K

WP6

R109
10k

VD110

IN4148

R108

100K
R107

100K

1

2

C121
103

XL101A

WP6

V103
C9015

C115

47U/25V

9

10

11

12

13 14

VD111

5.1V

Y100

RELAY-4

VD112

1N4148

R110
56K

XL100A

XL100A

SWM
RLY0

XL101A

1

2

WP6

V104
C8050

1

1

2

2

WP4

WP4

V105
C9014

1
5

2
6

3
7

4
8

OVER

P_RC

RLY0

SWM

L2
R2
C2
SL2
SR2
VC+
GND
GND
VC-

XP8

CON9

XP7

CON4

1
2
3
4
5
6
7
8
9

VD113

R100

47/3W

1N4004

R102
1K

VD108

IN4148

R101

1K

R103

47K

R111

4.7/1W
R112

4.7/1W

R113

4.7/1W

R114

4.7/1W

R115

4.71W

4
3

RLY0

2

SWM

1

VC+

VC-

C126

103

C1160.1u

C1170.1u

C1180.1u

C1190.1u

C1200.1u

V100

C9014

10K

R104

C9014

L100

0.7UH

L101 0.7UH

Figure3.3.1.1Protectioncircuitdiagram

Note:1.Afterrelayisusedforaperiod,workingstatemaybeunstableandsomeabnormalitiesmay

appear:relaydoesnotattractafterpoweronsometimes;eachcontactpointdoesnottouchfullyafter
relayattractingsometimes;CPUcannotdetectRLY0signal(afterrelayattractingthissignalislow
level),autoprotection.

-29-

2.Causesofpower-onprotection:over-currentprotection,over-voltageprotectionandCPUcannot
detectRLY0signal;testwhethereachoutputchannelhasDCoutput;whenpower-onprotectiontrouble
appears,makeclearwhichreasoncausedit.CentreorsurroundpowerIChavetrouble,whichcause
thatoutputsignalhasDCinit.

Example2Symtopm:nosoundoutput

[]

Description:poweron,aftersystemresetsnormally,switcheachsoundsourceandthereisno

output,selectdecodeandthereisnooutput.

Analysisandtroubleshooting:afterpoweron,selectVCDchannel,inputsinewavesignal,shown
asinthefigure3.3.1.2;testvolumeboardcapacitorC119,C121andthereisnosignal,testsignalboard
capacitorC122,C124andthereisstillnosignal,pin4,11ofN101hassignal,testpowervoltageofpin
7,16ofN101anditisnormal,pin3,13ofN101hasnosignal,sowepreliminarilyjudgethatN101has
inputbuthasnooutput,wejudgethatN101hasnotrouble,testpin9ofN111anditishighlevel,we
judgethatthischannelisnotgated,signalA,BofN104hastrouble.ChangeN104,afterchanging,
outputisnormalandtroubleisremoved.

N101
CD4052

12

DVD-R
CD-R

DVD-L
CD-L

X0

14

X1

15

X2

11

X3

1

Y0

5

Y1

2

Y2

4

Y3

6

INH

B

9

B

A

10

A

N111
CD4052

12

X0

14

X1

15

X2

11

X3

1

Y0

5

Y1

2

Y2

4

Y3

6

INH

B

9

B

A

10

A

N102

CD4053

12

X0

13

X1

2

Y0

1

Y1

5

Z0

3

Z1

6

INH

11

A

10

B
C9VEE

R1494K7

R1504K7

VDD

Vss

VDD
VSS
VEE

VDD
VSS
VEE

X

Y

13

X

L103100uH

C134

101

A-6.8V

C138

47u/16V

C135

+5VD

CLK

CLK

DATA
LAT

SW-1

SR-1

SL-1

C-1

R-1

L-1

DATA

LAT

SW-1
SR-1

SL-1

C-1
R-1
L-1

R141100

101

3

Y

16

A+6.8V

8
7

A-6.8V

13

X

3

Y

16

A+6.8V

8
7

A-6.8V

INT

4053_INT

14

FR

15

FL

4

C

Z

16

A+6.8V

8
7

A-6.8V

C109
47n

A+6.8V

C110
47u/16V

4052_A
4052_B

4053_INT

5.1CH

R127

22K

A

B

INT

5.1CH

R134

R136

R135

22K

22K

22K

1

OUT4

2

OUT3

3

OUT2

4

OUT1

5

AVDD

6

C112

SWIN

C127

C128

15n

0.33u

4.7u/16V

C115

4.7u/16V
C117

4.7u/16V

C120

4.7u/16V

C122

4.7u/16V

C124

4.7u/16V

C126

822

7
8

9
10
11
12
13
14
15
16
17
18

19

20

N104

GNDS

M62446

SRIN
SLIN
GNDC
CIN
GNDR
RIN
GNDL
LIN
BYPASR
BYPASL
LTRE

LBASS3

LBASS2

LBASS121RBASS1

DVDD

CLK

DATA

LATCH

DGND
AGND

SWOUT

SROUT
SLOUT

COUT
ROUT
LOUT

AVSS

CL1

CL2
CR1

CR2

RTRE

RBASS3

RBASS2

C111

47n

42
41
40
39
38
37
36
35
34
33
32
31

30
29

C123

4.7u/16V

28
27

C125

4.7u/16V

26
25
24

23

22

C133

47u/16V

C113 4.7u/16V

C114 4.7u/16V

C116 4.7u/16V

C118 4.7u/16V

C119 10u/16V

C121 10u/16V

C13747n

C139

822

C140

15n

C141

0.33u

TUNER_R

TUNER_L

4052_B
4052_A

C108

10u/16V

C107

10u/16V

Figure3.3.1.2Volumecircuitdiagram

Note:whenthereisnooutput,firstlymakesurethatitisacertainchannelhasnooutputorall
channelshavenooutput;thatallchannelshavenooutputmaybecausedbyabnormalpowersupplyof
acertainpart,orabnormalmutesignal;thenmakeclearwhetheritisdecodehasnooutputorsignals
withoutbeingdecodedhavenooutput;thatdecodehasnooutputiscausedbyabnormalworkingof
decodepart,pleaserefertocasesof“decodehasnooutput”.CD4052andCD4053belongtoelectronic
switchwithhighswitchfrequencyeasytodamageandmaypulldown+6.8Vand-6.8Vvoltageafter
damage,orpulldownthegatingsignalsA,Bof62446,andtroubleofnooutputappears.

-30-

[]Example3Symptom:decodehasnofunction

Description:wheninanaloginput,decodehasnooutput,inputdigitalsignalshavenooutput

Analysisandtroubleshooting:analogsignalswithdecodinghaveoutput,sowecanjudgethat
poweramplifiercircuitworkingisnormal,andtroubleispreliminarilydecidedondecodeboard.Shown
asinthefigure3.3.1.3,inputdigitalsignal,testpinOSCLK,OLRCK,SDOUTofN106Cs8415andthere
ispulsewaveformoutput,testAD2,AD1,AD0,WCK,BCK,MCLKofN105CS4923andtheyallhave
signaloutput,testAOUTA1,AOUTB1,AOUTA2,AOUTB2,AOUT3,AOUTB3of N107CS4360andthey
allhavenowaveformoutput,testvoltageofpowersupplypinofN107anditisnormal,testSDIN1,
SDIN2,SDIN3,LRCK,MCLKofN107CS5340andtheyallhavesignal,sowejudgethatN107CS4360
hasinputbuthasnooutput.AfterchangingN107,outputisnormalandtroubleisremoved.

C101

104

VD2.5

49326_DI
49326_CK
49326_CS
49326_DO
INT_49
DSPRST
SDA
SCK
DARST

RR105
8*3.3K

8415_ERR
8415_INT

G101

C103

12.288MHz

30P

R101
1M

R10251

N101C

5 6

74HC04
N101E

11 10

74HC04

VD5

R109

51

L107
FB

R113
51

VD3.3

L101
FB

VD3.3

L121

C104

1UH

30P

1 2

3 4

C113

104

N101B

74HC04

C157
1U/16V

R11451
R11251
R154470
R153
R15251
R15151
R15051

VD5

L122

1UH

N101A
74HC04

C203

C202
30P

C109

C110
104

C112
1U/16V

C105

104

30P

104

C159
104

C205

51

C114
472

R105
4K7

N105

CS49326-3

7

SCK

8

GPIO7

9

GPIO6

10

GPIO5

11

GPIO4

12

VD2

13

DGND2

14

GPIO3

15

GPIO2

16

GPIO1

17

GPIO0

R111
10K

30P

C206
30P

SDA SCK

R118
10K

C111

104

R119

1.2K

C115

104

R162

470

R108
4K7

1
2
3
4
5
6
7
8

9
10
11
12
13

CS4923

C108
104

/RESET

CLKSEL

C204
30P

R155
51

SDA/CDOUT

SCL/CCLK

AD0/CS

AD1/CDIN
EMPH
RXP0
RXN0
VA+
AGND
FILT
RST
RMCK
RERR
RXP1
RXP2
RXP314RXP4

CS8415ASO

N106

L117
1UH

1UH
L119

R106 51
R107
R110

SDIN2

AD2

DC
DD

AGND

VAA
FILT1
FILT2

CLKIN

LR2

RXP6
RXP5

H/S

VD+

DGND
OMCK

U

INT
SDOUT
OLRCK
OSCLK

R164
470

N101D
74HC04

R179

47K

R182

0

N101F

12

74HC04

R181

47K

R183

0

R161

VD3.3

L103

+5VD

VD5

VD3.3

C129

100U/16V

51

SCLK
LRCK
MCLK

DARST

SCK
SDA

C123

1U/16V

C124

104

C125
1U/16V

C126
104

L113

C155

VD3.3

1U/16V

FB

C127

104

R156
51

R159

10K

DIN1

C128

C106

L114

104

1U/16V

FB

SCLK1
LRCK1

N109

VD5

BM1117-3.3

Vin3Vout

C130
104

N110
BM1117-2.5

Vin3Vout

XS14
CON7

51
51

R120

R121

10K

C210
104

98

13

C214
104

C217

104

R123
10K

C120
471

L116

C213
101

L118
1UH

1UH

10K

XS17
CON9

C117

2.2U/16V

R122
33K

C119
103

L120
1UH

VD2.5

C121

104

L104
FB

DIGITALINP

C118
104

C135
1U/16V

L102

FB

UT

C116
1U/16V

39
38
37
36
35
34
33
32
31
30
29

28
27
26
25
24
23
22
21
20
19
18
17
16
15

1
2
3
4
5
6
7
8

9
10
11
12
13
14

L105

FB

L106

FB

1

2

3

4

5

6

7

N107

CS4360

MUTEC1

VLS

AOUTA1

SDIN1
SDIN2

AOUTB1
MUTEC2

SDIN3
SCLK

AOUTA2
AOUTB2

LRCK
MCLK
VD

AOUTA3

GND

AOUTB3

/RST

MUTEC3

DIF1
DIF0
M1
VLC

VD5

VD3.3

N108

M0
MCLK

FILT+

VL

REF_GND
SDOUT
GND
VD
SCLK
LRCK8RST

CS5340

2

C131

100U/16V

2

C134

100U/16V

VD1031N4004

AGND

FILT+

AINR

AINL

M1

VA

VQ

VA

VQ
M2

VD3.3

VD2.5

C156

104

C158
104

C154
104

28
27
26
25
24
23
22
21
20
19
18
17
16
15

R165
0Ohm

16
15
14
13
12
11
10
9

+12V

C161

C107

104

10U/16V

C150

C153

DA_L

DA_L

DA_R

DA_R

DA_SL

DA_SL

DA_SR

DA_SR

DA_C

DA_C

DA_SW

DA_SW

C146

L111

104

FB

VA5

C147

1u/16V

L112

C149
C148
1U/16V

C151

104

104

C152

1U/16V

104

V102
5551

R157

2.2K

VD102

5.6V

1U/16V

Ain-R

Ain-L

C132

10U/16V

R158
100K

R163
0Ohm

FB

Ain-R

Ain-L

VA5

VA5

C136
104

VA5VD5

VD2.5VD3.3

Figure3.3.1.3Decodecircuitdiagram

Note:ifdecodehasnooutput,firstlymakeclearwhetherdigitalaudiosignalhasnooutput;ifitis
onlyanalogsignaldecodehasnooutput,firstlyconsiderwhetherN108CS5340andperipheralcircuit
worknormally,aftergettingridofit,youmayconsiderthatwhetheritisacertaininputchannelofN105

-31-

Worksabnormally;ifitisonlydigitalaudiosignalhasnooutput,firstlyjudgewhethershapingcircuitof
digitalaudiosignalworksnormally,thencheckwhetherN106andperipheralcircuitworksnormally.
Abnormalsystemworkingmayprobablyaffectvoltage,soinactualworkingfirstlyjudgewhethersystem
powersupplyisnormal.Keypointwaveformmentionedaboveisalsoagoodreferencestandard.
[]Example4Symptom:micophonehasnooutput

Description:afterpoweron,insertmicrophone,displayhasdetecttheinputofmicrophone,but

microphonehasnooutput.

Analysisandtroubleshooting:afterpoweron,insertmicrophone,microphoneinputssinewave
signal,shownasonthefigure3.3.1.4,testbaseelectrodeofsignalboardtriodeV101anditislowlevel,
Micmutesignalisnormal,testsignalboardcapacitorC244andthereisnosignal,testsignalboard
capacitorC224andthereisnosignal.ConsideringthatMICinputcanbedetected,testsignalboard
capacitorC202andthereissignal,powersupplyvoltageofN203isnormal,sowepreliminarilyjudge
thattroubleliesinN203PT2315.AfterchangingPT2315,troubleisremoved.

+12V

R205

100/0.25W

VD201

9.1V

C201151

R20133K

C203

MIC

MIC

R2024.7K

4.7u/16V

N201B

4558

6
5

7

R203
1K

2
3

C204
10u/16V

100u/16V

C2024.7u/16V

C20510P

R204100K

-12V

N201A

4558

+12V

C215

C21047u/16V

N203PT2315

1

REF

2

VDD

3

C212

5.6n

C213

5.6n

R2061K

C220

47u/16V

AGND

4

TREBL

5

TREBR

6

RIN

7

LOUD_R

8

NC

9

LOUD_L
NC10LIN

C211

47n

VD202

1

1N4148

R207

47K

DGND

LOUT

ROUT

BOUT_R

BIN_R

BOUT_L

BIN_L

9014

DATA

V201

20

P_KT

C219

103

19
18
17

C214

16

4.7u/16V

15
14
13
12
11

C216

68n

C217

68n

C218

4.7u/16V

OK_CLK

OK_DAT

P_KT

OK_CLK
OK_DAT

R21947K

R21820K

C224

4.7u/16V
R22010K

R210

5.6K

R222

4.7K

R225

C230

22K

4.7u/16V

R224
10K

C233

5.6n

C231

4.7u/16V

C234
681

N202B

4558

6

7

5

R226

2.7K

C227

103

C235

C226

101

-12v

N202A

2
3

4558

+12v

C228

4.7u/16V

C229

R227

2.7K
103
C232

5.6n

C236

C237

0.1u

0.1u

681

C244

R2211K

4.7u/16V

OK

OK

1

CLK

N204

PT2399

C238

+12V

R234
220/0.5W

R233
20K

47u/16V
C242
47n

C243

47u/16V

VD203

5.1V

C240

103

C239

0.22u

Figure3.3.1.4MICcircuitdiagram

[]Example5Symptom:headphonehasnooutput

Description:afterpoweron,poweramplifierhasoutput,headphonehasnooutput.

Analysisandtroubleshooting:poweron,inputDVDsignal,insertheadphoneandfindthatrelay
disconnects,P_RLYofheadphoneboardflatcableishighlevel,SHUTDOWNpinvoltageofN100
Lm4880is2.5V,IN_A,IN_BofN100hasaudiosignal,testpowersupplypinvoltageofN100anditis
normal,testthepositiveaudiosignalofcapacitorC106,C107anditisnormal,sowejudgethat
headphonehastrouble.Afterchangingheadphone,troubleisremoved.

-32-

Note:whenheadphonehasnooutput,firstlymakeclearwhetherrelayisdisconnected,thentest
whetherSHUTDOWNpinvoltageofLM4880isnormal(2.5Vwheninnormalcondition),andfinally
judgewhetherheadphonehastroubleorLM4880hastrouble.

Example6Symptom:nosoundoutput

[]

Description:afterpoweron,connectto5.1CH,mainchannelhasnooutput,centreandsurround

haveoutput,powerboardFL101,FL102fuseisburntdown.

Analysisandtroubleshooting:changeFL101,FL102fuse,poweronagain,fuseisburntdown,
poweroff,shownasinthefigure3.3.1.5,testresistencetogroundofpowerboardVc+,Vc-and
resistanceiszeroohm,unplugpowerboardflatcableholderXS8,testresistancetogroundofpower
amplifierboardVc+,Vc-anditalsozero,sowepreliminarilyjudgethattroubleliesonpoweramplifier
board.TestresistencebetweeneachpinofpowerpipeV112ofpoweramplifierboardandtheyareall0,
resistancebetweeneachpinofpowerpipeV113is0,V112,V113havebeenstrickenthrough,change
V112,V113,changefuse,afterpoweronagain,outputisnormalandtroubleisremoved.

C103

R101

10K

V101

S8050

R102
100K

R103

1K

C101

10u/16V

R104

47K

47u/100V

R1052KR106

V102

2N5551

C104
220p

R107 47

V104

2N5551

C107

47u/100V

2K

V103

2N5551

R108

47
R1091K

C105

100u/16V

VD102
1N4148

R110

VD103

510

1N4148

C108

33p/500V

R111

R114 4.7K

33K/0.5W

V106

2N5551

R115

2.2K

R112

1K

R117

220/0.5W

R113

150

V105

2N5401

V107

2N5551

R116

150

R125

220/0.5W

2SC5248

C109

47n

V132

R121

33K

V133
2SA1964

R120

100/0.25W

R122

100/0.25W

V112

2SC5200

R128

4.3K

R126

0.25/7W

R127

0.25/7W
R130

4.3K

V113
2SA1943

R129

1.5K

Vc+

Vc-

C110

0.47u/16V

V114

2N5551

VD104

1N4148

Figure3.3.1.5Poweramplifiercircuitdiagram

Note:whenacertainchannelhasnooutput,firstlymakesurevoltageofeachchannelpower
amplifyingcircuitisnormal.Generally,teststagebystagefromfinalstageofsignaloutputandanalyse
thereasons.Forvoltageisunstable,powerICiseasytoburndown;machinevibratesinthecourseof
con,whichmaybreakthelineofPCBboardofsignalboard,ormakecopperpieceofelementpinfalloff.
Whenanalysingquestions,weshouldconsider.

Example7Symptom:noscreendisplay

[]

Description:afterpoweron,relayattracts,outputsignalisnormal,VFDhasnodisplay.
Analysisandtroubleshooting:connecttopower,testvoltageofpanelXS10anditisnormal,change

VFDdisplayscreen,displayisnormalandtroubleisremoved.

-33-

Note:whennoscreendisplayappears,firstlymakeclearwhethervoltageofdisplayscreenis
normal,whetherdisplaydriveICisnormal;VFDscreenisvacuumpackagedanditiseasytodamage,
soinmostconditionsitisthescreenthathasbeendamaged.

Example8Symptom:powernoton

[]

Description:noactionafterpoweron,relaydoesnotattract,noscreendisplay.

Analysisandtroubleshooting:poweron,observeeachfuseanditisnormal,testsecondarystage
voltageoftransformeranditis0,testprimarystagevoltageoftransformeranditisnormal,testprimary
resistanceoftransformeranditisinfinite,sowejudgethattransformerhasbeenburntdown.Change
transformerandtroubleisremoved.

Note:whenpowernoton,firstlymakeclearthatitispowernotonorhasnoscreendisplay,whether
itispartofvoltageisabnormalorallvoltageisabnormal;ifitispowernoton,teststagebystagefrom
powersocketuntilthetroubleisfound.

-34-

3.3.2Troubleshootingflowchart

1.Troubleshootingprocessfor“Power-onprotection”isshownasinthefollowingfigure3.3.2.1:

Power-onprotection

Check

whetherthereis

centralpointvoltage

Y

Check

whethersignal

isaddedormainvolume

isincreasedandprotection

isavailable

Y

Check

whetherpower

amplifierboardresistor

R111,R141has

opencircuit

Y

Check

whetherresistor

R108hasopen

circuit

Y

N

Checkwhichchanneloutputs
DCandthencheckthischannel

Checkwhetherthediodeor

N

triodeofover-currentprotection
isdamaged,orcapacitor
C115hastrouble

N

N

Changeresistor

Changeresistor

Check

whetherRLY

detectsignalis

abnormal

Y

Whether

playerprotection

Y

Changerelay

N

Checkwhetherpowerboard
VD108islowlevelandchangeV100

Figure3.3.2.1Troubleshootingflowchartfor“Power-onprotection”

-35-

2.Troubleshootingflowchartfor“Karaokehasnosound”isshownasinthefollowingfigure3.3.2.2:

Analysis:thiskindoftroublemayadoptsignalinputmethod.Teststagebustage,whenacertain
stagedoesnothavedisturbancesoundinloudspeaker,thisstagehastrouble;whenusingthismethod,
checkfrombackstagetofrontstage.Anothermethodissignalcontrolmethod,checkstagebystage
fromfronttobackstage,ifastagehasnosound,itmeansthatthisstagehastrouble.

Karaokehasnosound

Checksignalboard

Check

whetherC202has

soundsignal

Y

Check

whetherR219,

R221hassound

Y

Check

whetherC245,

C246havesound

Y

Check

whetherV104,

V105baseelectrode

is0.7AV

Y

Check

whetherV103

Eelectrodeishigh

level

N

CheckN210andMIC
holecircuit

N

CheckPT2315andCPU
signalP-SCCL,P-DATA

N

CheckN203andpower
supplyloop

N

CheckwhetherV104or
V105isstrickenthrough

N

ChangeV103

Y

Whether

MICDETisstart

level,andwhetherKT

islowlevel

Figure3.3.2.2Troubleshootingflowchartfor“Karaokehasnosound”

N

-36-

CPU,MICholeand
V200havetrouble

3.Troubleshootingprocessdoe“Nooutput(2channels)”isshownasinthefigure3.3.2.3:

Nooutput(2channels)

Check

whetherpower

supplyofeachchannel

isnormal

Y

Check

whethermute

circuitsignalis

normal

Y

N

Refertotroubleshooting
for"powernoton”

CheckwhetherMICholder

N

isnormal,andcheckmute
circuit

Check

whetherpower

amplifierboardXS8has

signaloutput

Y

Check

whethervoltage

ofpowerboardR100is

normal

Y

Changerelay

N

N

ChangeVD113

Check

whethersignal

boardcapacitorC119

C121havesignal

Y

Check

whethersignal

board12Vvoltage

±

isnormal

Y

ChangesignalboardN107

N N

N

Check

signalboardN104

powersupply

Y

ChangeN104

Checkpowercircuit

Figure3.3.2.3Troubleshootingflowchartfor“Nooutput(2channels)”

Checkpowersupply

-37-

VCDchannelhasnooutput

Switch

toDVDchannel

andcheckwhetherthere

isoutput

Y

Input

VCDchannel

andcheckwhetherpin4

and11ofsignalboardN101

havewaveform

Y

ChangeN101

N

N

ChangeVCDinputterminal

Check

whetherpin3

and13ofsignalboard

N10have

waveform

Y

Check

whethersignal

boardC119,C121has

waveform

Y

Check

whetherpin2,3

ofsignalboardflatcable

holderXS9has

waveform

Y

Check

whetherpower
boardPCBhasphenomena
ofrosinjoint,fallenwelding

andcopper

piece

Y

N

N

N

ChangeN101

whethervoltage

ofpin42ofN104is

whether+12V

powersupplyofpin4,8

ofN106andN107

ChangeN106andN107

N

whetherpower

amplifierboardC101,

Check

normal

Y

ChangeN104

Check

isnormal

Y

Check

C111have

signal

Y

N

Refertotroubleshootingofvoltage

N

Refertotroubleshootingofvoltage

N

Checkmutecircuit

Changerelay

Check

N

whetherpower
boardPCBhasphenomena
ofrosinjoint,fallenwelding

andcopper

piece

Check

whetherpower

amplifierboardVC

isnormal

±

N

Refertotroubleshootingofvoltage

DSPhasnooutput

Switch

digitalinputor

analoginputandcheck

whetherthereis

nooutput

Y

Check

whether+5V,

+3.3Vand2.5Vofdecode

boardpowersupplyvoltage

isnormal

N

Digitalsignalhasoutput

whetherpin10,

12ofdecodeboard

N108has

Y

Check

signal

N

ChangesignalboardN111

N

N

Test

whetherR128

andR131have

waveform

N

Check

whethersignal

boardC108andC107

havewaveform

Y

Disconnect

decodeboardresistor

R155,testwhethertwoends

ofresistorR155have

waveformsignal

(MCLK)

Y

Input

sinewaveto

VCDchannel,underDSP

decodestate,testwhether

waveformofpin39,40,41,42,43

ofN105is

correct

Y

Test

whetherwaveform

ofpin19,20,23,24,26,27

ofN107iscorrect(referto

keypoint

waveform)

whetherN108

powersupplyisnormal,

whetherRSTis

ChangeN108

N

whethervoltage

ofdecodeboardL102is

ChangedecodeboardN106

N

N

Y

ChangeN107

Checkdecodeboard

N106,C107,C108

Y

Check

normal

Y

Check

normal

Y

N111powersupplyis

N

Refertotroubleshooting
processforvoltage

whetherN105

powersupplyis

normal

ChangeN105

Y

Whether

normal

Y

ChangeN111

Test

Y

Y

CheckflatcableXP17

Refertotroubleshooting
processforvoltage

Test

whetherdecode

N

boardL121voltageis

normal

ChangeN101

ChangeC207

Refertotroubleshooting
processforvoltage

Analogsignalhasoutput

Y

Input

N

Y

N

opticalsignal

andtestwhetherdecode

boardL119has

signal

Y

Test
whetherdecode
boardC207has

signal

Y

Test
whetherdecode

N

boardL101voltageis

normal

Y

ChangeN106

SectionFourServicingParameter

3.4.1Signalwaveformdiagram

Thissectioncollectssignalwaveformdiagramofaudio,videoandeachunitcircuitandthepurpose
istohelpservicingpeopleaccuratelyandquicklyjudgewheretroubleliestobetterservicingskillsfor
servicingpersonnel.Becauseofthedifferenceinbrand,modelandtuningofoscillograph,some
differencemayexist,soservicingpeopleshouldpaymoreattentionindailywork.

1.Waveformdiagramofpin13ofN101

2.Waveformdiagramofpion3ofN101

- 40 -

3.Waveformdiagramofpin2ofXS9

4.Waveformdiagramofpin3ofXS9

5.Waveformdiagramofpin1ofXS8

- 41 -

6.Waveformdiagramofpin2ofXS8

7.FLwaveformdiagramnDSPdecodestate

8.FRwaveformdiagraminDSPdecodestate

- 42 -

9.CwaveformdiagraminDSPdecodestate

10.SLwaveformdiagraminDSPdecodestate

11.SRwaveformdiagraminDSPdecodestate

-43 -

12.FLoutputwaveformdiagramafterdecodingandpoweramplifierboardamplifying

13.FRoutputwaveformdiagramafterdecodingandpoweramplifierboardamplifying

14.Coutputwaveformdiagramafterdecodingandpoweramplifierboardamplifying

-44 -

15.SLoutputwaveformdiagramafterdecodingandpoweramplifierboardamplifying

16.SRoutputwaveformdiagramafterdecodingandpoweramplifierboardamplifying

17.Waveformabout“CS5340outputsMCLK”

-45 -

18.Waveformdiagramabout“CS5340outputsLRCK”

19.Waveformdiagramabout“CS5340outputsSCLK”

20.Waveformdiagramabout“CS5340outputsSDOUT”

-46 3-

21.Waveformdiagramabout“CS49326outputsSDIN1”

22.Waveformdiagramabout“CS49326outputsSDIN2”

23.Waveformdiagramabout“CS49326outputsSDIN3”

-47-

24.Waveformdiagramabout“CS49326outputsleft/rightclock”

25.Waveformdiagramabout“CS49326outputsSCLK”

26.C175waveformdiagraminDSPdecodestate

-48 -

27.C178waveformdiagraminDSPdecodestate

28.C184waveformdiagraminDSPdecodestate

29.C187waveformdiagraminDSPdecodestate

-49 -

30.C190waveformdiagraminDSPdecodestate

3.4.2Keypointvoltage

1.Powerboard:+VcvoltageofflatcableholderXS8is+53V,and-Vcvoltageis-53V;negative

voltageofdiodeVD113is+14.6V;

2.Poweramplifierboard:negativevoltageofdiodeVD111is+22.3V,positivevoltageofdiodeis-

22.3V,pin3ofN105mutesignalvoltage:-19.0Vwhenmuteisoff,-22.4Vwhenmuteison(main
channelmutesignalP_LRMandcentralsurroundmutesignalP_CSMareseparate,centralsurround
channelinstereostateisalwaysmuted);

3.Controlpanel:~V3offlatcableholderXS10is26.5AC;F1,F2is2.1VACeach;

4.Videoboard:pin1ofXS100is+12V,pin3is-12V;

5.MICboard:beforeinsertingheadphone,P_RLYislowlevel,PH_SWislowlevel;afterinserting

headphone,P_RLYishighlevel,PH_SWishighlevel;

6.Decodeboard:voltageofpin3ofN109is5V,voltageofpin2is23.3V,negativevoltageofdiode

VD103is2.5V.

-50 -

Section Five Function Introduction to IC

3.5.1 function introduction to 4558

1. Description
The RC4558 and RM4558 devices are dual general-purpose operational amplifiers with each half

electrically similar to the A741 except that offset null capability is？ not provided.

The high common-mode input voltage range and the absence of latch-up make these amplifiers ideal for
voltage-follower applications. The devices are short-circuit protected and the internal frequency compensation
ensures stability without external components.

The RC4558 is characterized for operation from 0 C to 70 C, and the RM4558 is characterized for ？ ？
operation over the full military temperature range of –55 C to 125 C.

2. FEATURES

◆ Continuous-Short-Circuit Protection

◆ Wide Common-Mode and Differential

◆ Voltage Ranges

◆ No Frequency Compensation Required

◆ Low Power Consumption

◆ No Latch-Up

◆ Unity-Gain Bandwidth . . . 3 MHz Typ

◆ Gain and Phase Match Between Amplifiers

◆ Low Noise . . . 8 nV?Hz Typ at 1 kHz

◆ Designed To Be Interchangeable With

◆ Raytheon RC4558 and RM4558 Devices

3. PIN CONFIGURATION

PIN No. Symbol I/O

Description
1 1OUT O
2 1IN– I
3 1IN+ I

Output 1
Inverting Input Pin 1
Non-Inverting Input Pin 1

- 51 -

PIN No. Symbol I/O

Description
4 VCC– I
5 2IN+ I
6 2IN– I
7 2OUT O
8 VCC+ I

Negative Power Supply
Non-Inverting Input Pin 2
Inverting Input Pin 2
Output 2
Positive Power Supply

3.5.2 function introduction to PT2399

1. DESCRIPTION

PT2399 is an echo audio processor IC utilizing CMOS Technology which is equipped with ADC and DAC,
high sampling frequency and an internal memory of 44K digital processing is used to generate the delay time,
it also feature an internal VCO circuit in the system clock, thereby , making the frequency easily adjustable.
PT2399 boast of very low distortion (THD<0.5%) and very low noise (No<-90dBV), thus producing high
quality audio output .The pin assignments and application circuit are optimized for easy PCB layout and cost
saving advantage.

2. FEATURES

◆ CMOS Technology

◆ Least External component

◆ Auto Reset Function

◆ Low Noise, No<-90dBV Typical

◆ Low Distortion, THD<0.5% Typical

◆ External Adjustable VCO

◆ Available in 16 pins DIP or SOP package

3. PIN CONFIGURATION

PIN No. Symbol I/O Description

1 VCC I Positive Power Supply
2 REF I Reference Power Supply
3 AGND I Simulative Ground
4 DGND I Digital Ground
5 CLK_O O NC
6 VCO O Voltage Controlled Oscillator
7 CC1 O External capacitor

- 52 -

PIN No. Symbol I/O Description

8 CC0 O External capacitor

9 OP1-OUT O External capacitor 1 output
10 OP1-IN I External capacitor 1 input
11 OP2-OUT O External capacitor 2 output
12 OP2-IN I External capacitor 2 input
13 LPF2-IN I Low pass filter 2 input
14 LPF2-OUT O Low pass filter 2 output
15 LPF1-OUT O Low pass filter 1 input
16 LPF1-IN I Low pass filter 1 output

3.5.3 function introduction to CD4051

1. DESCRIPTION
The CD4051 is a single 8-channel multiplexer with three binary control inputs and inhibit input.
The three binary control input signals select 1 of 8 channels to be turned on and connect it to the single

out.

The operating voltage is as 3 to 18V and quiescent current is as low as 5 µA max. (at Vpp=5V ).

2. PIN CONFIGURATION

PIN No. Symbol I/O Description

1 X4 I/O Channel selection port 4
2 X6 I/O Channel selection port 6
3 X I/O Channel selection output
4 X7 I/O Channel selection port 7
5 X5 I/O Channel selection port 5
6 INH I Inhibit
7 VEE I/O Negative Power Supply
8 GND I GND

9 C I Channel selection binary bit C
10 B I Channel selection binary bit B
11 A I Channel selection binary bit A
12 X3 I/O Channel selection port
13 X0 I/O Channel selection port 0

-53 -

PIN No. Symbol I/O Description

14 X1 I/O Channel selection port 1
15 X2 I/O Channel selection port 2
16 VCC I Positive Power Supply

3. TRUTH TABLE

INH C B A ON SWITH

0 0 0 0 X0
0 0 0 1 X1
0 0 1 0 X2
0 0 1 1 X3
0 1 0 0 X4
0 1 0 1 X5
0 1 1 0 X6
0 1 1 1 X7
1 X X X NONE

3.5.4 function introduction to CD4052

1. DESCRIPTION
The CD4052 is a dual 4-channel multiplexer with two binary control inputs and inhibit input.
The two binary control input signals select 1 of 4 pairs of channels to be turned on and connect it to the

two outputs.

The operating voltage is as 3 to 18V and quiescent current is as low as 5 µA max. (at Vpp=5V ).

2. PIN CONFIGURATION

PIN No Symbol I/O Description

1 Y0 I/O Y channel selection port 0
2 Y2 I/O Y channel selection port 2
3 Y I/O Y channel selection output
4 Y3 I/O Y channel selection port 3
5 Y1 I/O Y channel selection port 1
6 INH I Inhibit
7 VEE I/O Negative Power Supply

-54 -

PIN No Symbol I/O Description

8 GND I GND
9 A I Channel selection binary bit A

10 B I Channel selection binary bit B

11 X3 I X channel selection port 3
12 X0 I/O X channel selection port 0
13 X I/O X channel selection output
14 X1 I/O X channel selection port 1
15 X2 I/O X channel selection port 2
16 VCC I Positive Power Supply

3. TRUTH TABLE
INH B A ON SWITH

0 0 0 X0 Y0
0 0 1 X1 Y1
0 1 0 X2 Y2
0 1 1 X3 Y3
1 X X NONE

3.5.5 function introduction to CD4053

1. DESCRIPTION

The CD4053 is a triple 2-channel multiplexer having three separate digital control inputs, A, B, and C and
an inhibit input. Each control input selects one of a pair of channels which are connected in a single-pole
double-throw configuration

The three binary control input signals select 1 of 2 pairs of channels to be turned on and connect it to the
three outputs.

2. Features

The operating voltage is as 3 to 18V and quiescent current is as low as 5 µA max. (at Vpp=5V ).

3. PIN CONFIGURATION

PIN No. Symbol I/O Description

1 by I Y1
2 bx I Y0

-55 -

PIN No. Symbol I/O Description

3 cy I Z1
4 c O Z
5 cx I Z0
6 INH I Enable
7 Vee I Negative Power Supply
8 Vss I GND

9 C I Select C
10 B I Select B
11 A I Select A
12 ax I X0
13 ay I X1
14 a O X
15 b O Y
16 Vdd I Positive Power Supply

4. TRUTH TABLE

INH B A ON SWITH

0 0 0 X0 Y0
0 0 1 X1 Y1
0 1 0 X2 Y2
0 1 1 X3 Y3
1 X X NONE

3.5.6 function introduction to PT6311

1. DESCRIPTION
PT6311 is a Vacuum Fluorescent Display (VFD) Controller driven on a 1/8 to 1/16 duty factor housed in

52-pin plastic QFP Package. Twelve segment output lines, 8 grid output lines,

8 segment/grid output drive lines, one display memory, control circuit, key scan circuit are all incorporated
into a single chip to build a highly reliable peripheral device for a single chip micro computer. Serial data is fed
to PT6311 via a three-line serial interface.

2. FEATURES

◆ CMOS Technology

-56 -

◆ Low Power Consumption

◆ Key Scanning (12 x 4 matrix)

◆ Multiple Display Modes: (12 segments, 16 digits to 20 segments, 8 digits)

◆ 8-Step Dimming Circuitry

◆ LED Ports Provided (5 channels, 20 mA max.)

◆ 4- Bits General Purpose Input Ports Provided

◆ Serial Interface for Clock, Data Input, Data Output, Strobe Pins

◆ No External Resistors Needed for Driver Outputs

◆　 Available in 52-pin QFP Package

3. PIN DESCRIPTION

PN No. Symbol I/O Description

1 SW1 I
2 SW2 I

General Purpose Input Pins

3 SW3 I
4 SW4 I
5 DOUT O Data Output Pin
6 DIN I Data Input Pin
7 NC NC
8 CLK O Clock Input Pin

9 STB O Serial Interface Strobe Pin
10 K1 I
11 K2 I

Key Data Input Pins

12 K3 I
13 K4 I
14 VDD I Logic Power Supply
15 SG1/KS1 O
16 SG2/KS2 O
17 SG3/KS3 O
18 SG4/KS4 O

High-Voltage Segment Output Pins
19 SG5/KS5 O
20 SG6/KS6 O
21 SG7/KS7 O
22 SG8/KS8 O

Also acts as the Key Source

-57 -

PN No. Symbol I/O Description

23 SG9/KS9 O
24 SG10/KS10 O
25 SG211KS11 O
26 SG12/KS12 O
27 SG13/KS13 O
28 SG14/KS14 O
29 SG15/KS15 O
30 SG16/KS16 O
31 SG17/KS17 O
32 SG18/KS18 O
33 VDD I Logic Power Supply
34 VEE I Pull-Down Level
35 SG19/GR10 O
36 SG20/GR9 O
37 GR8 O
38 GR7 O
39 GR6 O
40 GR5 O
41 GR4 O

High-Voltage Segment Output Pins

Also acts as the Key Source

High Voltage Segment/Grid Output Pins

High-Voltage Grid Output Pins

42 GR3 O
43 GR2 O
44 GR1 O
45 VDD I Logic Power Supply
46 LED5 O
47 LED4 O
48 LED3 O
49 LED2 O
50 LED1 O
51 GND I GND
52 OSC I Oscillator Input Pin

High-Voltage Grid Output Pins

LED Output Pin

-58 -

3.5.7 function introduction to UTCLM4880

1. DESCRIPTION
The UTC LM4880 is a dual audio power amplifier capable of delivering typically 250mW per channel of

continuous average power to an 8O load with 0.1% THD+N using a 5V power supply.

The UTC LM4880 features an externally controlled, low-power consumption shutdown mode, as well as
an internal thermal shutdown protection mechanism. The unity-gain stable UTC LM4880 can be configured
by external gain-setting resistors.

2. FEATURES

◆ No bootstrap capacitors or snubber circuits are necessary

◆ Unity-gain stable

◆　 External gain configuration capability

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 Out A O R Output
2 In A I R Input
3 Bypass O Bypass capacitor
4 GND I GND
5 Shutdown I Shutdown control
6 In B I L Input
7 Out B O L Output
8 Vdd I VDD

3.5.8 function introduction to 74HC04

1. DESCRIPTION

The MC74HC04A is identical in pinout to the LS04 and the MC14069. The device inputs are compatible with
Standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs.

The device consists of six three–stage inverters.

2. FEATURES

?◆ Output Drive Capability: 10 LSTTL Loads

◆ Outputs Directly Interface to CMOS, NMOS and TTL

?◆ Operating Voltage Range: 2 to 6V

◆ Low Input Current: 1 A？

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◆ High Noise Immunity Characteristic of CMOS Devices

◆ In Compliance With the JEDEC Standard No. 7A Requirements

◆　 Chip Complexity: 36 FETs or 9 Equivalent Gates

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 A1 I Signal input
2 Y1 O Signal output
3 A2 I Signal input
4 Y2 O Signal output
5 A3 I Signal input
6 Y3 O Signal output
7 GND I Ground
8 Y4 O Signal output

9 A4 I Signal input
10 Y5 O Signal output
11 A5 I Signal input
12 Y6 O Signal output
13 A6 I Signal input
14 Vcc I Voltage input

3.5.9 function introduction to LM1875

1. Description
The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for

consumer audio applications.

The LM1875 delivers 20 watts into a 4 ?or 8 ?load on ？ ？ ±25V supplies. Using an 8 ?load and ？ ±30V
supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of
external components. Device overload protection consists of both internal current limit and thermal shutdown.

The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely
low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew
rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply
range. The amplifier is internally compensated and stable for gains of 10 or greater.

2. Features

◆ Up to 30 watts output power

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◆ AVO typically 90 dB

◆ Low distortion: 0.015%, 1 kHz, 20 W

◆ Wide power bandwidth: 70 kHz

◆ Protection for AC and DC short circuits to ground

◆ Thermal protection with parol e circuit

◆ High current capability: 4A

◆ Wide supply range 16V-60V

◆ Internal output protection diodes

◆ 94 dB ripple rejection

◆ Plastic power package TO-220

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 +IN I Non-Inverting Input Pin C

PIN No. Symbol I/O Description

2 -IN I Inverting Input Pin C
3 -VEE I Negative Power Supply
4 OUTPUT O Signal out C

5 VCC I Positive Power Supply

3.5.10 function introduction to TDA7265

1. DESCRIPTION

The TDA7265 is class AB dual Audio power amplifier assembled in the Multiwatt package, specially
designed for high quality sound application as Hi-Fi music centers and stereo TV sets.

2. Features

◆ WIDE SUPPLY VOLTAGE RANGE (UP TO 25V ABS MAX.)？

◆ SPLIT SUPPLY

◆ HIGH OUTPUT POWER 25 + 25W @THD =10%, RL = 8 , V？ S = +20V

◆ NO POPAT TURN-ON/OFF

◆ MUTE (POP FREE)

◆ STAND-BY FEATURE (LOW Iq)

◆ SHORT CIRCUIT PROTECTION

◆　THERMAL OVERLOAD PROTECTION

- 61 -

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 -Vs I Negative Power Supply
2 OUT1 O Signal out SL
3 +Vs I Positive Power Supply
4 OUT2 O Signal out SR
5 MUTE I Mute control
6 -Vs I Negative Power Supply
7 IN2+ I Non-Inverting Input Pin SR
8 IN2- I Inverting Input Pin SR
9 GND I GND

10 IN1+ I Non-Inverting Input Pin SL

11 IN1- I Inverting Input Pin SL

3.5.11 function introduction to M62446

1. DESCRIPTION

The M62446FP is 6 channels electric volume controlled 3-wire serial data.

The IC is suitable for use in home-use audio systems and TV sets.

2. Features

◆ Electric volume: Volume level••••• 0dB ~ -79dB, - dB (1dB / step)？

◆ Tone control: Bass / Treble, 0dB ~ ±10dB(2dB / step)

◆ 4 Output ports: Built-in microcomputer interface circuit controlled by 16-bit serial data.

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 Out 4 O Source select control 4
2 Out3 O Source select control 3
3 Out2 O Source select control 2
4 Out1 O Source select control 1
5 AVdd I Positive Power Supply
6 SWin I SW Input
7 GNDS I SW GND

- 62 -

PIN No. Symbol I/O Description

8 SRin I SR Input

9 SLin I SL Input
10 GNDC I C GND
11 Cin I C Input
12 GNDR I R GND
13 Rin I R Input
14 GNDL I L GND
15 Lin I L Input
16 BYPASSR O R bypass capacitance
17 BYPASSL O L bypass capacitance
18 LTRE O L treble capacitance
19 LBASS3 O L bass capacitance
20 LBASS2 O L bass capacitance
21 LBASS1 O L bass capacitance
22 RBASS1 O R bass capacitance
23 RBASS2 O R bass capacitance
24 RBASS3 O R bass capacitance
25 RTRE O R treble capacitance
26 CR2 O R capacitance
27 CR1 I R capacitance
28 CL2 O L capacitance
29 CL1 I L capacitance
30 AVSS I Negative Power Supply
31 Lout O L out
32 Rout O R out
33 Cout O C out
34 SLout O SL out
35 SRout O SR out
36 SWout O SW out
37 AGND I AGND
38 DGND I DGND
39 LATCH I Description

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PIN No. Symbol I/O Select control

40 DATA I Serial Data input
41 CLK I Serial CLK input
42 DVDD I Digital Power Supply

3.5.12 function introduction to AT24C02

1. Description

The AT24C02 provides 2048 bits of serial electrically erasable and programmable read-only memory
(EEPROM) organized as 256 words of 8 bits each. The device is optimized for use in many industrial and
commercial applications where low-power and low-voltage operations are essential. The AT24C02 is
available in space-saving 8-lead PDIP,

8-lead MAP, 8 lead TSSOP and 8-ball dBGA2 packages and is accessed via a 2-wire serial interface. In
addition, the entire family is available in 2.7V (2.7V to 5.5V) and 1.8V (1.8V to 5.5V) versions.

2. Features

◆ Low-voltage and Standard-voltage Operation
– 2.7 (VCC = 2.7V to 5.5V)
– 1.8 (VCC = 1.8V to 5.5V)

◆ Internally Organized, 256 x 8 (2K),

◆ 2-wire Serial Interface

◆ Schmitt Trigger, Filtered Inputs for Noise Suppression

◆ Bi-directional Data Transfer Protocol

◆ 100 kHz (1.8V) and 400 kHz (2.5V, 2.7V, 5V) Compatibility

◆ Write Protect Pin for Hardware Data Protection

◆ 8-byte Page (1K, 2K), Write Modes

◆ Partial Page Writes are Allowed

◆ Self-timed Write Cycle (5 ms max)

◆ High-reliability

– Endurance: 1 Million Write Cycles
– Data Retention: 100 Years

◆ Automotive Grade, Extended Temperature and Lead-Free Devices Available

◆ 8-lead PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 5-lead SOT23,

8-lead TSSOP and 8-ball dBGA2™ Packages

-64 -

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 A0 I To Ground
2 A1 I To Ground
3 A2 I To Ground
4 VSS I To Ground
5 SDA I/O Serial Data input
6 SCL I/O Serial SCL input
7 TEST I/O Test port
8 VDD I Positive Power Supply

3.5.13 function introduction to L7805

1. Description

LM7805 is 5V voltage regulator, locates on power board in this player and is used to generate 5V stable

voltage.

2. Features

◆ Suitable for CMOS ,TTL, the other digital IC’s power supply

◆ Internal thermal overload protection

◆ Internal short circuit current limiting

◆ Output current in excess of 1 A

◆ Metal Fin is fully covered with Mold Resin

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 Input I Input +18V
2 Common I Ground
3 Output O Output +12V

3.5.14 function introduction to 7812

1. Description

LM7812 is +12V voltage regulator, locates on power board in this player and is used to generate +12

stable voltage.

- 65 -

2. Features

◆ Suitable for CMOS ,TTL, the other digital IC’s power supply

◆ Internal thermal overload protection

◆ Internal short circuit current limiting

◆ Output current in excess of 1 A

◆ Metal Fin is fully covered with Mold Resin

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 Input I Input +18V
2 Common I Ground
3 Output O Output +12V

3.5.15 function introduction to 7912

1. Description

LM7812 is +12V voltage regulator, locates on power board in this player and is used to generate +12

stable voltage.

2. Features

◆ Suitable for CMOS ,TTL, the other digital IC’s power supply

◆ Internal thermal overload protection

◆ Internal short circuit current limiting

◆ Output current in excess of 1 A

◆ Metal Fin is fully covered with Mold Resin

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 Input I Input -18V
2 Output O Output -12V
3 Common I Ground

3.5.16 function introduction to NE5532

1. DESCRIPTION

The NE5532 is high-performance operational amplifiers combining excellent DC and AC characteristics. It

- 66 -

is low noise, high output-drive capability, high unity-gain and maximum-out-swing bandwidths, low
distortion ,high slew rate, input-protect diodes, and output short-circuit protection. The operational amplifier is
compensated internally for unity-gain operation. The device has specified maximum limits for equivalent input
noise voltage.

2. FEATURES

◆ Ｕnity-gain bandwidth …100MHz Typ

◆ Common-mode rejection ratio …100dB Typ

◆ High dc voltage gain …100V/mV Typ

◆ Peak-to-peak output voltage swing 32 V Typ with Vcc=±18V and Rl=600Ω

◆ High slew rate …9V/us Typ

◆ Wide supply-voltage range …±3V to ±20V

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 1OUT O Output 1
2 1IN– I Inverting Input Pin 1
3 1IN+ I Non-Inverting Input Pin 1
4 VCC– I Negative Power Supply
5 2IN+ I Non-Inverting Input Pin 2
6 2IN– I Inverting Input Pin 2
7 2OUT O Output 2
8 VCC+ I Positive Power Supply

3.5.17 function introduction to PT2315

1. Description

PT2315 is a two-channel digital audio processor utilizing CMOS Technology . Volume, Bass, Treble and
balance controls are incorporated into a single chip. Loudness Function is also provided to build a highly
effective electronic audio processor having the highest performance and reliability with the least external
components. All functions are programmable using the IIC Bus. The pin assignments and application circuit
are optimized for easy PCB layout and cost saving advantage for audio application. Housed in a 20-pin
DIP/SO Package, PT2315is pin-to-pin compatible with TDA7315 and is very similar in performance with
performance with the later.

- 67 -

2. Features

◆ CMOS Technology

◆ Least External Components

◆ Treble and Bass Control

◆ Loudness Function

◆ Input/Output External Noise Reduction System/Equalizer

◆ 2 Independent Speaker Controls for Balance Function

◆ Independent Mute Function

◆ Volume Control in 1.25 dB/step

◆ Low Distortion

◆ Low Noise and DC Stepping

◆ Controlled by IIC BUS Micro-Processor Interface

◆ Pin-to-Pin Compatible with TDA7315

3. PIN DESCRIPTION

PIN No.

1 REF O Reference Power Supply
2 VDD I Power Supply
3 AGND I AGND
4 TREB_L O L treble adjust capacitance
5 TREB_R O R treble adjust capacitance
6 RIN I R input
7 LOUD_R O R Loud adjust
8 NC NC
9 LOUD_L O R Loud adjust

10 NC NC

11 LIN I L input

12 BIN_L I L adjust capacitance input
13 BOUT_L O L adjust capacitance output
14 BIN_R I R adjust capacitance input

Symbol I/O Description

15 BOUT_R O R adjust capacitance output
16 ROUT O R output
17 LOUT O L output
18 DGND I DGND
19 DATA I Serial Data input

- 68 -

PIN No.

20 CLK I Serial CLK input

Symbol I/O Description

3.5.18 function introduction to CS4360

1. DESCRIPTION

The CS4360 is a complete 6-channel digital-to-analog system include digital interpolation, fourth-order
delta-sigma digital–to-analog conversion, digital de-emphasis, volume control, channel mixing and analog
filtering. The advantages of this architecture include: ideal differential linearity, no distortion mechanism due to
resistor matching error, no linearity drift over time and temperature and a high tolerance to clock jitter.

The CS4360 accepts data at audio sample rates from 4 kHz to 200 kHz, consumes very little power and
operates over a wide power supply range. These features are ideal for cost-sensitive, multi-channel audio
systems including DVD players, A/V receivers, set-top boxes, digital TVs and VCRs, mini-component systems,
and mixing consoles.

2. FEATURES

◆ 24-Bit Conversion

◆ 102 dB Dynamic Range

◆ -90 dB THD+N

◆ +3 V to +5V Power Supply

◆ Digital volume Control with Soft Ramp:

◆ -119 dB Attenuation

◆ -1 dB Step Size

◆ Low Power Consumption

◆ -105 m W with 3 V Supply

◆ Low Clock Jitter Sensitivity

◆ ATAPI Mixing

◆ Popguard Technology for Control of Clicks and pops

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 VLS I Serial Audio Interface Power
2 SDIN1 I Serial Audio Data Input 1
3 SDIN2 I Serial Audio Data Input 2
4 SDIN3 I Serial Audio Data Input 3
5 SCLK I Serial Clock

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PIN No. S ymbol I/O Description

6 LRCK I Left/Right Clock
7 MCLK I Master Clock
8 VD I Digital Power
9 GND I GND

10 /RST I Reset

11 DIF1/SCL/CCLK I Digital Interface Format 1
12 DIF0/SDA/CDIN I Digital Interface Format 0
13 M1/AD0/CS/ I Mode Selection 1
14 VLC I Control Port Power
15 M2 I Mode Selection 2
16 FILT+ O Positive Voltage Reference
17 VQ O Quiescent Voltage
18 MUTEC3 O Mute Control 3
19 AOUTB3 O Analog Output B3
20 AOUTA3 O Analog Output A3
21 GND I GND
22 VA I Analog Power
23 AOUTB2 O Analog Output B2
24 AOUTA2 O Analog Output A2
25 MUTEC2 O Mute Control 2
26 AOUTB1 O Analog Output B1
27 AOUTA1 O Analog Output A1
28 MUTEC1 O Mute Control 1

3.5.19 function introduction to CD4094

1. Description

The CD4094BC consists of an 8-bit shift register and a 3-STATE 8-bit latch. Data is shifted serially
through the shift register on the positive transition of the clock. The output of the last stage (QS) can be used
to cascade several devices. Data on the QS output is transferred to a second output, Q′S, on the following
negative clock edge.

The output of each stage of the shift register feeds a latch, which latches data on the negative edge of the
STROBE input. When STROBE is HIGH, data propagates through the latch to 3-STATE output gates. These

-70-

gates are enabled when OUTPUT ENABLE is taken HIGH.

2. Features

◆ Wide supply voltage range: 3.0V to 18V

◆ High noise immunity: 0.45 VDD (typ.)

◆ Low power TTL compatibility: Fan out of 2 driving 74L or 1 driving 74LS 3-STATE outputs

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 STROBE I Store control
2 DATA I Serial data
3 CLOCK I Serial clock
4 Q1 O Bit 1 output
5 Q2 O Bit 2 output
6 Q3 O Bit 3 output
7 Q4 O Bit 4 output
8 Vss I GND

9 Qs O Top Bit output
10 Qs’ O Non-Qs
11 Q8 O Bit 8 output
12 Q7 O Bit 7 output
13 Q6 O Bit 6 output
14 Q5 O Bit 5 output
15 Output enable I Output enable
16 Vdd I Positive Power Supply

3.5.20 function introduction to CS5340

1. DESCRIPTION

The CS5340 is complete analog-to-digital converter for digital audio systems. It performs sampling,
analog-to-digital conversion and anti-alias filtering ,generating 24-bit values for both left and right inputs in
serial form at sample rates up to 200 kHz per channel.

The CS5340 uses a 5th-order,multi-bit delta-sigma modulator followed by digital filtering and decimation,
which removes the need for an external anti-alias filter.

The CS5340 is ideal for audio systems requiring wide dynamic range, negligible distortion and low noise,

-71 -

such as set-top boxes, DVD-karaoke players, DVD recorders, A/V receivers, and automotive applications.

2. FEATURES

◆ Advanced multi-bit Delta-Sigma architecture

◆ 24-bit conversion.

◆ Supports all audio sample rates including 192kHz.

◆ 101dB Dynamic Range at 5V.

◆ -94 dB THD+N.

◆ High pass filter to remove DC offsets.

◆ Analog/digital core supplies from 3.3V to 5V..

◆ Linear phase digital anti-alias filtering.

◆ Auto-mode selection.

◆ Pin compatible with the cs5341

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 M0 I Mode selection 0
2 MCLK I Master clock
3 VL I Logic power
4 SDOUT O Serial audio data output
5 GND I GND
6 VD I Digital power
7 SCLK I Serial clock
8 LRCK I Left right clock
9 /RST I Reset

10 AINL I Analog input L

11 VQ O Quiescent voltage
12 AINR I Analog input R
13 VA I Analog power
14 REF_GND I GND
15 FILT+ I Positive voltage reference
16 M1 I Mode selection 1

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3.5.21 function introduction to CS8415

1. DESCRIPTION

The CS 8415A is a monolithic CMOS device which receives and decodes one of 7 channels of audio data
according to the IEC60958, S/PDIF and EIAJ CP 1201 interface standards or one channel of AES3 data. The
CS8415A has a serial digital audio output port and comprehensive control ability via a 4-wire microcontroller
port. Channel status and user data are assembled in block sized buffers, making reading access easy.

A low jitter clock recovery mechanism yields a very clean recovered clock from the incoming AES3
stream.

Stand-alone operation allows system with no microcontroller to operate the CS8415A with dedicated
output pins for channel status data.

Target applications include AVR, CD-R, DAT, DVD, Multimedia Speakers, MD and VTR equipment, mixing
consoles, digital audio transmission equipment, high quality D/A and A/D converters, effects processors,
set-top box and computer audio systems.

2. FEATURES

◆ +3V to +5V Digital supply.

◆ Complete EIAJ CP 1201, IEC-60958, AES3, S/PDIF compatible receiver.

◆ 7: 1 S/PDIF input MUX.

◆ Flexible 3-wire serial digital output port .

◆ 8 kHz to 96 kHz sample frequency rang .

◆ Low jitter clock recovery

◆ Pin and conrocontroller read access to channel statue and user data

◆ Microcontroller and stand-alone mode

◆ Differential cable receiver

◆ On-chip channel statue and User data buffer memory

◆ Auto-detection of compressed audio input streams

◆ Decodes Q CD sub-code

◆ OMCK System clock mode

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 SDA/CDOUT I/O Serial control data I/O
2 AD0/CS/ I Address bit 0
3 /EMPH O Pre-emphasis
4 RXP0 I AES3/SPDIF receiver port
5 RXN0 I AES3/SPDIF receiver port

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PIN No. Symbol I/O Description

6 VA+ I Positive analog power
7 AGND I Analog ground
8 FILT O PLL loop filter

9 /RST O Reset
10 RMCK I Input section recovered master clock
11 RERR O Receiver error
12 RXP1 I AES3/SPDIF receiver port 1
13 RXP2 I AES3/SPDIF receiver port 2
14 RXP3 I AES3/SPDIF receiver port 3
15 RXP4 I AES3/SPDIF receiver port 4
16 OSCLK O Serial audio output bit clock
17 OLRCK O Serial audio output left/right clock
18 SDOUT O Serial audio output data
19 INT O Interrupt
20 U O User data
21 OMCK I System clock
22 DGND I Digital ground
23 VD+ I Positive digital power
24 H/S/ I Hardware mode control
25 RXP5 I AES3/SPDIF receiver port 5
26 RXP6 I AES3/SPDIF receiver port 6
27 AD1/CDIN I Address bit 1
28 SCL/CCLK I Control port clock

3.5.22 function introduction to CS49326

1. DESCRIPTION

By the CS49236, compressed data can delivered in IEC61937 format via the S/PDIF port and in burst
mode via the PC interface. PCM data can be accept through digital input connectors or from the on-board
ADC. Six channels of audio are provided on the six analog outputs and on three optical S/PDIF transmitters.
CLKIN for the DSP can be derived either from the on-board oscillator or the external PLL. MCLK can be
extracted from incoming S/PDIF streams, generated with the external PLL , or mastered by audio decoder.

-74 -

2. FEATURES

◆ CDB49236 demonstrates 5.1channel decode capability of the CS4923 family .

◆ 6 discrete analog outputs driven by CS4340 DAC

◆ 4 S/PDIF optical outputs.

◆ Accepts analog input, s/PDIF digital input, burst compressed data.

◆ Discrete PLL which can provide multiple sampling frequencies

◆ Interfaces to a personal computer through the parallel port.

◆ Stake headers provide convenient location for direct writing control signals from off-board

microcontroller.

◆ Interface for external memory card.

◆ Digital and analog patch areas

3. PIN DESCRIPTION

PIN No. Symbol I/O Description

1 VD1 I Digital power supply 1
2 DGND1 I Digital ground 1
3 XMT958 Nc
4 XMWR I Connect down-pull resistance
5 EMOE I Connect up-pull resistance
6 DIN I Data input
7 SCK I Serial clock
8 GPIO 7 Nc

9 GPIO 6 Nc
10 GPIO 5 Nc
11 GPIO 4 Nc
12 VD2 I Digital power supply 2
13 DGND2 I Digital ground 2
14 GPIO 3 Nc
15 GPIO 2 Nc
16 GPIO 1 Nc
17 GPIO 0 Nc
18 /CS I Select control
19 DOUT O Data output
20 /INT O Interrupt

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PIN No. Symbol I/O Description

21 EXTMEM I Connect up-pull resistance
22 SDATAN I Data input 2
23 VDD3 I Digital ground 3
24 DGND3 I Digital ground 3
25 BCK1 I SCLK
26 WCK1 I LRCK
27 CMPDAT I Data input 1
28 BCK2 I SCLK 1
29 LR2 I LRCK 1
30 CLKIN I Clock input
31 CLKSEL I CLK select
32 FILT2 O PLL loop filter 2
33 FILT1 O PLL loop filter 1
34 VAA I Analog power input
35 AGND I Analog ground
36 /RESET I Reset
37 DD O Connect up-pull resistance
38 DC O Connect up-pull resistance
39 AD2 O Serial data input 2
40 AD1 O Serial data input 1
41 AD0 O Serial data input 0
42 WCK O SCLK output
43 BCK O LRCK output
44 MCLK I Master clock

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ChapterFourDisassemblyandAssemblyProcess

AudiopoweramplifiersmanufacturedinBBKarelargelyidenticalbutwithminordifferencesandare
mainlycomposedofdecodeboardcomponents,powerboardcomponents,controlpanelcomponents,
CPUcontrolboardcomponents,poweramplifierboardcomponents,MICboardcomponentsandsignal
boardcomponents.Inordertospeedupthecompilationof“ServiceManual”,weshallnotgiverepeat
explanationtomodelwithminordifferencesinchapterfour“DisassemblyandAssemblyProcess”forthe
latercompiledservicemanuals.Fordisassemblyandassemblyprocessinthischapter,pleasereferto
chapter4of“AV225TServiceManual”.

Thepicturesofthismodelareshownasfollows:

-77 -

PCB board & Circuit diagram

Section One PCB board

5.1.1 MIC Board

Chapter Cinque

MIC
GND
PH_SW
R-1
L-1
AGND
+5VD
P_RLY

C100

XJ1
C101

C106

R100

C103

R103

MIC

C110

R101

N100

R109

C111

R111
R107

R102

C105

C109

R104

R108

XP14

V101

C104

C107

C108

C102

R110

X100

L101

R105

R106

2004 12 03

9310T-4

- 78 -

5.1.2 SIGNAL Board

XC104

XC103

-12V

R172

W55

XS6

VD103

XS9

R144

GND

C157

R187

FLCFR

N103

C155

C154

W45

C159

C161
R188

W31

R189

C167

C166

VD105

VD104

W29

XS11

N106

C158

C160

R179

C162

VD106

R167

C150

~8V5

SL

GND

N107

R177

N108

C168

R164

VD108

~8V5

DGND

R171

R173
R175

SW

R181

R145

SR

C169

R165

R146

W33

R155
R148

C156

R176

R162
R161

C164

VD109

R119

C146

R137

R163
R180

C151

R120

W30

R147

W26
R174

R156

W43
R178

W25

R182

R166

N109

C103

DGND

+5VD

C176

XS21

GND
P_RLY
RLYC

LRM
CSM

+12V

DGND
DGND

-12V

V105

V103

V104

XP16

SWM

L1

R1
C1
SL1

SR1
GND

XS13

+12V

W35

XP20

W24

VD107

R123

N102

W4

G

O I

W21

P_SCM

R124

R157

R159

C116

P_LRM

P_RLY

R122

C113

C118

R138

C114
W32

R121

C132

VD101

C149

C175

C173

W50

KM

R126

R125

R118

W5

W20

W19

W51

W14

R134

R131

C130

R127

VD102

W27

C131

C129

V102

V101

R160

W40

C148

W16

R221

R219

C204

VD202

R206

R142

W44

XP14 XS12

W28

PH_SW

R129

R117

W37

C244

W42

C226

R204

R207

R150

W10

W9
W11
W39

W38

R130

R128

W41

C220

R115

C121

N202

R220

P_RLY

R116

W53

R149

R132
R133

W18

C205 N201

V201

+5VD

R109

R158

W6

GND

N111

C122

C120

C115

W13

C147

R110

C229

L-1

C124

C117

R-1

R105

W23

C119

W2

R225

C232

C231

C230

R218
R203

C219

XC101

R136

W3

C227

R226

R227

C201

R205

W52

GND

PH_SW

R112

R106

W46

C126

C112

W15

C152

C228

MIC

W12

W49

C128

C127

W8

XS22

R229

R111

R201 C214

R202

C203

XS15

R108

R168

C237
C236

R231

C170

C202

R107

W1

W22

R135

R232

R230
C235

R228

R224

VD201

N104

W34

W48
W47

C140C141

C224 R223

R143

N204

C216

N105

C233

R210

C212

R102

C211

L104

C108

L103

C153

R103

C123C133 C125

VD110

R222

C243

W7

R170

C240

C234

C217

C213

C215

C107

R185

C106

R101

C101
C139

VD112

VD111

C239

C242

C105

R139

R233

XC102

R104

C102

C110

C111

L102

R183

C238

C218

R184

R186

XP17

V106

C241

+5VD

W36

N101

R234

VD203

N203

RLYC

DGND

R152

C210

NC

C171

W54

XP18

DDA

R151

1 11

XS20

W17

1310T-2

DCK

DST

C109

L101

VD5
RX3
RX2

DGND

RX1

GND
Lin

GND

Rin

GND

NC
NC
T_R

+9V

T_L

GND

DO
CLK
DATA

CE

C135

C134

R141

LAT
CE

CLK

DATA

DO

P_DIST

OK_DAT
OK_CLK

P_KT

REMOTE

DST
DCK
DDA

2005 10 22

FAN

REMOTE

- 79 -

5.1.3 Surface layer of DECODE Board

XS16

C139

L109

C198

C197

C196

C199

C138

C193

C137

C177

R135

R137

C179

C189

R147 R136
R149C191

R148

N112

C192

C178

C175

C141

C201

C142

N114

C200

C107

C156

C140

L110

C195

R140
C182

N113 N111

C194

C181

C153

C151

C150

C122

C145

C146

C190

C132

VD102

R139

C152

C143
R165

N107

C183

R142C185R143 R141

R132

C184
C174
R134

C176
R133

C149

C148

C186

L112

R144

R146

C144

C188

L111

C147

R145

C187

C133

C136

C161

R158

R157

V102

R128

C180

R138

R127

R126

C165

C166

N108

R163

2004 12 03

L118
C168

C170

C106

C128

C127

C125

C126

C123 R107

C124

2310T-0

XS17

C213 L116 L120

R131

R130

C167

R129

C169

L114

R159

C155

L113

R156

L106

R106
C108

R108

L105

C203
R105

XS14

L103

C219

R179

R178

C214
L117

R182

C215
R181

L119

N101

L121 C105

C112

C216 C217

R180 R183

R117

R115

C115

C218

R119

C114 C113

C207

C209

R155

N106

C116

C210

R120

R161

R121

R110

N105

C202

C129

R102

C130

R104

R103

L122

R116

L101

C111

C208

R118

C135

C121

C117

C118

C120

C109

L115

C154

N109

C131

VD103

C158

N110

L102

R162

C134

L107

L104

R164

C119

R123

C157

C159

R122

R113
R109

R150
R151

C110

C205

R152
R111
R154
C204

C206

R112

R153

R114

C211

VD105

R177

C212

R176

RR104

RR105 R173 RR102

C171

N115

VD104

L108

R124

C162

R125

VD101

C172

N116

R174

C101

C163

R175

V101
RR103

C164

R101

R170 R171

R168 R169

R166 R167

C103 C104

G101

XS18

- 80 -

5.1.4 Bottom layer of DECODE Board

- 81 -

5.1.5 AMPLIFIER POWER Board

C120

C110

W2
W14

V129

V114

W61

W8

V112

W63

R113

R120

VD107

R117

VD104

W69
W57
W51

W48

V109

C102

W75

W43

W64

C103

V117

R158

V120

W10

C118

R141

C119

C115

R142

R138

C114

V122

R146

R137

R134

R144
R145

V121

W11

V119

R159

V125

R152

R153

W12

V135

R154

2SA1964

R140

C117

W62

W70

R160

W58

V126

VD105
VD106

C116

W26

C125

C128

R163

V130

W37

C127

W18

W42

VD108

C154

T6.3AL250V

C159

V131

C124

C145

R181

N102

7912

R184 R183

N104

R167

O

SRQ1

I
G

XP6

C149

C151

-12V

C146

W81

C147

W80

GND+12V

C148

C150

O

G

I

N1017812

VD10

W35

W20

W41

W36
W72
W1

V151

W19

W54

R165

FL101

R171

W24

R166

C123

VD110

C126

V150

R170

C122

VD109

R169

R168

R180

T6.3AL250V

FL102

V128

P

R157

W39

W15

W40

R155

C141
C142

C156

R179

W65

C132

C155

W28

R175

C139
C140

W71

N106

R178

W3
C134

C131

W22

W74

R174

W53

C137
C135

W27

W21

C157

C130C129

VD112
VD114

VD111
VD113

XS5

W73

C136

R172

R177

W52

R164

R176

R173

W31

C144 C143

R109

V103

R128

R118

W68

W47

V108

V102

XS7

SWM

V106
R114
R115

R129

C109

W7

W6

W5

R122

R124

C105

OVER

R112

R108

C104

R104

V107

R107

W60

W76

R116

V104

V111

V133

R110

C107

L2

RLY0

V105

C108

R111

R121

P_RC

N

R126

R119

V132

R106

R105

R130

R2

W50

R123

V113

P

W16

R127

VD101

V110

R125

R161

C121

R101

R102
VD102
VD103

R103

V101V116R133

C106

C101

W45 W46

XS8

VC+

C2

SL2

SR2

GND

R131

GND

P_RLY

R132

P_RC

V115

GND

P_LRM

W55

VC-

P_CSM

XP13

W67

R162

C111

V127

XP9

W66

W77
W78

R147

C112

W9

W56

R143

R149

C113

W13

V124

N

R150

R156

V134

R136

R135

V118
W49

4138-1

2005 08 23

R148

R139
R151

W33
W59

V123

- 82 -

5.1.6 POWER Board

R103

V100

R101

C126

R104

W14

C121

V103 R107V101

C115 C114

XS1

05/12/2

5100-5 LJQ

XS2

SW

XS3

TRANS

FL100 T4AL250V

C102

R105

V102

C113

W22

W20

C109

W13

C112

R109
C120

C119

C118

C116
R106
VD110

R108
C117

VD111

W21

C123

C124

V105

C122

VD100

V104

C110

C106

W5

VD107

Y100

R100

C107

C125

XL100

W18

VD106

XP8

C111

VD108

XP7

R102

SWM
RLY0
P_RC
OVER

VD113

L2
R2
C2
SL2
SR2
VC+
GND
GND
VC-

L101

R121

L104

VD103

W16

R122

VD102

W19

L102

L100

VD112

R110

VD101

W12

W8
W7

XL101

R120
R115

R114

R119
R118

R113

L103

W9

R111
R116

W15
R117

W11

R112

W10

W4

W2

W1

C108

VD105

VD104

C103

XS4

W17

FL101T6.3AL250V

FL102T6.3AL250V

C104 C105

C101

W3

C100

W6

- 83 -

~V3

~V3

5.1.7 Key Scan Board

O

C111C112

V

G

W6

V101

W15

R116
R109
R105

R104
R110
R103
R111
W7

R122

R108

W8

C105

C110

C114

C109

L101

XP15

REMOTE

FAN

DST

DCK

DDA

NC
P_RLY
DGND

+5V

C113

W9

W3

1 5

C107

C108

R113

VD103

R114

F1

VD102

0

0

F2

R115

XP10

VD101

R112

6310T-2

2006 01 18

VFD101 15

W1

C101

R107

C106

C104

28

W2

C103

C102

W17
W16

W18
W19
W20

W10

N102

43 47

W12
W13

W14

W11

W5

S101

R121

R106

VD104

C115

RP101

VD105

R101

R102

R119

R117

R120

W4

R118

- 84 -

5.1.8 VIDEO Board

VD101

R106

C102

R105

W6

V103

V104

W11

VD100

C100

W8

C103

R103

N100

C101

W5

W1

XS100

TC101

W3

TC100

W2
V100

XC100

R102

R100
R101

R118

R115

R104

TC104

V102

R119

R117

W7

R114

TC105

R116

TC103

R108

7310T-1

2006-01-18

W10

R110

N101

R107

W9

R109

W4

V101

TC102

XL100

X100

W12

R111
R113
R112

- 85 -

- 86 -

C101

104

VD2.5

49326_DI
49326_CK
49326_CS
49326_DO
INT_49
DSPRST
SDA
SCK
DARST

9

RR105
8*3.3K

8415_ERR
8415_INT

XTAL2

G101

C103

12.288MHz

30P

R101
1M

R102 51

N101C

5 6

74HC04
N101E

11 10

74HC04

VD5

XTAL1

R109

51

C104
30P

L107
FB

R113
51

VD3.3

1 2 3 4 5 6 7 8

L101
FB

C113

104

VD3.3

VD5

L121
1UH

147

1 2

N101A
74HC04

N101B

3 4

74HC04

C157
1U/16V

R114 51
R112 51
R154 470
R153
R152 51
R151 51
R150 51

L122
1UH

C202
30P

C105

C203

30P

C109

104

C110
104

C112
1U/16V

104

C159
104

C205

51

R109 1

C114
472

N105

CS49326-3

10
11
12
13
14
15
16
17

30P

R118

X01

R103 51

R105

R108

4K7

4K7

6

5

4

3

2

DIN

7

EMOE

SCK

EMWR

8

GPIO7

9

GPIO6
GPIO5
GPIO4
VD2
DGND2
GPIO3
GPIO2
GPIO1
GPIO0

DGND1

XMT958

CS4923

/CS18DOUT19/INT20EXTMEM21SDATAN22VD323DGND324BCK125WCK126CMPDAT

DIN2

R111
10K

C206
30P

10K

C111

C115

104

X02

R104 51

C218 101

1

SDA SCK

2
3
4
5

104

6
7
8
9

10

R119

11

1.2K

12
13

R162

470

104

104

104

C207

C208

C209

75

101

R11675R117

C219

75

R115

C108
104

R106 51
R107
R110

SDIN1

LRCK

SCLK

MCLK

1

44

43

42

41

VD1

BCK

WCK

MCLK

27

DIN1

LRCK2

SCLK2

C204
30P

R155
51

SDA/CDOUT

SCL/CCLK

AD0/CS

AD1/CDIN
EMPH
RXP0
RXN0
VA+
AGND
FILT
RST
RMCK
RERR
RXP1
RXP2
RXP314RXP4

CS8415ASO

N106

L117
1UH

L119
1UH

C215 101

SDIN2

40

AD0

AD1

/RESET

AGND

VAA
FILT1
FILT2

CLKSEL

CLKIN

BCK2

28

SCLK1

RXP6
RXP5

DGND

OMCK

SDOUT
OLRCK
OSCLK

AD2

DC
DD

LR2

H/S

VD+

INT

N101D
74HC04

R179
47K

N101F

74HC04

R181
47K
R183
0

5.2.1 DECODE Board 1

R161

51
51

R120

R121

10K

SDIN3

39
38
37
36
35
34
33
32
31
30
29

LRCK1

10K

C116
1U/16V

C117

2.2U/16V

C118
104

L104

R122

R123
10K

C120
471

FB

33K

C119

VD2.5

103

51

SCLK
LRCK
MCLK

DARST

SCK
SDA

C123

1U/16V

C124

104

C125
1U/16V

C126

104

L113

C155

VD3.3

1U/16V

FB

C127
104

R156
51

R159

10K

DIN1

VD3.3

C128

C106

L114

104

1U/16V

FB

C130
104

P17

PH_SW

KM

P_RLYC

3

3

PH_SW

N109
BM1117-3.3

Vin

N110
BM1117-2.5

Vin

XS14
CON7

SCLK1
LRCK1

28
27
26
25
24
23
22
21
20

U

19
18

DIN2

SCLK2

17
16
15

R164
470

R182

0

LRCK2

C210
104

X01

X02

L116

C214

98

1312

1UH

104

C213

750

101

R178

L120
1UH

L118

C217

1UH

104

750

101

Rin

R180

C216

123456789

XS17
CON9

C121

104

C135
1U/16V

RX1

Lin

DIGITAL INPUT

VD3.3

L102
FB

C129

VD5

100U/16V

L103

+5VD

RX2

RX3

VD5

P14

P15

P16

1234567

P_LRM

P_SCM

1
2
3
4
5
6
7
8

9
10
11
12
13

L105
FB

L106
FB

1

2

3

4

5

6

7

GND

1

GND

1

N107
CS4360

VLS
SDIN1
SDIN2
SDIN3
SCLK
LRCK
MCLK
VD
GND
/RST
DIF1
DIF0
M1
VLC14M2

VD5

VD3.3

N108

M0
MCLK
VL

REF_GND
SDOUT
GND
VD
SCLK
LRCK8RST

CS5340

2

Vout

C131

100U/16V

2

Vout

C134

100U/16V

VD103 1N4004

MUTEC1
AOUTA1
AOUTB1
MUTEC2
AOUTA2
AOUTB2

AGND
AOUTA3
AOUTB3
MUTEC3

FILT+

FILT+

AINR

AINL

28
27
26
25
24
23
22

VA

21
20
19
18
17

VQ

16
15

104

1u/16V

104

1u/16V

C143

C145

C144

C122

C156

R165

104

0Ohm

16

M1

15
14
13

VA

12
11

VQ

10
9

VD3.3

+12V VA5

C154
104

VD2.5

C107
10U/16V

C158
104

C147

1u/16V

C149

C148

1U/16V

1U/16V

C150

C151

104

104

C152

1U/16V

C153

104

V102
5551

R157

2.2K

VD102

5.6V

C161
104

VD2.5VD3.3

DA_L
DA_R

DA_SL
DA_SR

DA_C
DA_SW

C146

104

Ain-R

Ain-L

C132

10U/16V

R158
100K

R163
0Ohm

L111
FB

L112
FB

DA_SL
DA_SR

DA_SW

Ain-R

Ain-L

DA_L
DA_R

DA_C

VA5

VA5VD5

VA5

-

C136
104

C133

47U/16V

Section Two circuit diagram

5.2.2 DECODE Board 2

L108
FB

+5V

24C02

4

VSS

SDA5SCL6TEST7VDD

R173
470

N115

3

9

R174
470

49326_DO

DSPRST
SDA
SCK
DARST
49326_DI
49326_CK
49326_CS

P27
P26
P25

8415_ERR

XTAL1
XTAL2

R132
10K

C174

A01A12A2

C171
104

8

+5V

DA_SL

DA_SR

DA_SW

DA_C

DA_R

DA_L

DA_SL

DA_SR

DA_SW

DA_C

DA_R

DA_L

C175

10U/16V

C178

10U/16V

C181

10U/16V

C184

10U/16V

C187

10U/16V

C190

10U/16V

R133

R134

3.9K

5.6K
C176

272

R136

5.6K
C179

272

R139

R140

22K

10K

C182
104

R142

R143

3.9K

5.6K
C185

272

R145

R146

5.6K

3.9K

C188
272

R148

R149

5.6K

3.9K

C191
272

471

6
5

R137

3.9K

2
3

6
5

2
3

6
5

2
3

7

C137

N112B
5532

R135
10K

C177

-12V

471

N112A

5532

8 4

+12V

R138
47K

C180
153

N113B
5532

R141
10K

C183

-12V

471

N113A

5532

8 4

+12V

R144
10K

C186
471

N114B

5532

R147
10K

C189

-12V

471

N114A
5532

8 4

10U/16V

C192
104

1

C138

10U/16V

C193
104

C139

10U/16V

7

C194
104

1

C140
10U/16V

C195
104

C141

7

10U/16V

C200
104

1

C142

10U/16V

C201
104

-

XS16
CON10

SR

1

SW

2

SL

3

AGND

4

FR

5

C

6

FL

7

AGND

8
9
10

L110

L109

FB

FB

C197
104

47U/16V

C196
104

C198

C199

47U/16V

+12V-12V

+12V

L115

+5VD

C163
104

VD101

R125

1N4148

47K

R124
22K

C162

RR102
8*4.7K

1 2 3 4 5 6 7 8

9

+5V

XS18
CON13

P10

1

LAT

CE

CLK

DATA

DO

P_DIST
OK_DAT
OK_CLK

P_KT

Remote

DST
DCK
DDA

- 87 -

P11

R166

2

P12

R167

3

P13

R168

4

P30

R169

5

P31

6

R170

7

R171

8

P34

9

P35

10

P36

11

P37

12

P25

13

VD105

PH_SW

1N4148

P14

P_SCM

P15

P_LRM

P16

470
470
470
470

470
470

P_RLYC

P17

KM

P27
P26

R172
470

8415_INT

INT_49

VD104
1N4148

+5V

RR103

1 2 3 4 5 6 7 8

8*4.7K

R176
1K

R177
10K

9

R175

4.3K

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20

V101
9014

N116

P89C238MBP/B

C164

10U/16V

P10(T2)
P11(T2)
P12
P13
P14
P15
P16
P17
RST/VPD
P30(RXD)
P31(TXD)
P32(INT0)
P33(INT1)
P34(T0)
P35(T1)
P36(WR)
P37(RD)
XTAL2
XTAL1
VSS

C211

104

104

C212

C172

47U/16V

47U/16V

40

VCC

39

P00(AD0)

38

P01(AD1)

37

P02(AD2)

36

P03(AD3)

35

P04(AD4)

34

P05(AD5)

33

P06(AD6)

32

P07(AD7)

31

/EA(VPP)

30

ALE

29

/PSEN

28

P27(A15)

27

P26(A14)

26

P25(A13)

25

P24(A12)

24

P23(A11)

23

P22(A10)

22

P21(A9)

21

P20(A8)

+5V

1 2 3 4 5 6 7 8

RR104
8*4.7K

R126
10K

C165
331

R127
22K

Rin

Rin

R128
100K

Lin

Lin

R131
100K

6
5

N111B
5532

R129
10K

C167

-12V

331

C168

R130

2

22K

3

104

N111A
5532

8 4

C170
104

C166

7

1

10U/16V

C169

10U/16V

Ain-R

Ain-L

Ain-R

Ain-L

+12V

XS20

CE

11

DATA

10

CLK

9

DO

8
7
6

TUNER_L

5
4

TUNER_R

3
2
1

CON11

XC101C

9

R

L

XC101B

R

L

XC101A

R

L

XC102

OUTPUT

RX178B

XP17

9
8
7
6
5
4
3
2
1

CON9

XP16
CON10

From Audio Decoder

SR
SW
SL

AGND

FR
C
FL

AGND

-12V

10

+12V

R

R

L

L

R

SR

L

SL

R

SW

L

C

8
7

6
5
4

3
2
1

VCC
GND

C109 104

RX3
RX2
DGND
RX1
AGND

AGND

1
2
3
4
5
6
7
8
9

3
2
1

6
5
4

9
8
7

DVD

CD

COAX1

COAX2

OPTICAL

- 88 -

XC103A

XC103B

XC103C

1
2
3

-12V
+12V

R101 1K

R102 47K

R103 47K

R104 1K

R105 1K

R106 47K

R107 47K

R108 1K

R109 1K

R110 47K

R111 47K

R112 1K

C171
104

R152
75

R115 1K

R116 47K

R117 47K

R118 1K

R119 1K

R120 47K

R121 47K

R122 1K

R123 1K

R124 47K

R125 47K

R126 1K

C101

47n

L101
47uH

47u/16V

C102
47u/16V

C105

C106
104

VD5

V106
S8050

R139 1K

5.1CH

TUNER_R

TUNER_L

4052_B
4052_A

DVD-R
CD-R

DVD-L
CD-L

5.1CH

C110
10u/16V

12
14
15
11

1
5
2
4
6

9

B

10

A

12
14
15
11

1
5
2
4
6

9

B

10

A

12
13

2
1

5
3

6
11
10

12
13

2

1

5

3

6
11
10

VD112

10V

C108

10u/16V

C107

10u/16V

L102 47uH

N101
CD4052

X0
X1
X2
X3

Y0
Y1
Y2
Y3
INH

B
A

N111
CD4052

X0
X1
X2
X3

Y0
Y1
Y2
Y3
INH

B
A

R149 4K7

R150 4K7

N102

CD4053

X0
X1

Y0
Y1

Z0
Z1

INH
A
B
C9VEE

N103

CD4053

X0
X1

Y0
Y1

Z0
Z1

INH
A
B
C9VEE

VDD

VDD

+12V

R130
100K

R131
100K

R129
470K

R132
470K

R133
470K

R128

13

X

3

Y

16

A+6.8V

VDD

8

VSS

7

A-6.8V

VEE

13

X

3

Y

16

VDD

A+6.8V

8

VSS

7

VEE

A-6.8V

INT

4053_INT

14

FR

X

15

FL

Y

4

C

Z

16

A+6.8V

8

Vss

7

A-6.8V

14

SR

X

15

SL

Y

4

SW

Z

16

A+6.8V

8

Vss

7

A-6.8V

470K

C109
47n

A+6.8V

C110
47u/16V

6
5

4052_A
4052_B

4053_INT

5.1CH

R168 470K

N105B

R127

22K

A

B

INT

5.1CH

C153

7

4.7u/16V

4558

R136

R135

R134

22K

22K

22K

1

OUT4

2

OUT3

3

OUT2

4

OUT1

5

AVDD

6

C112

SWIN

4.7u/16V

7

GNDS

8

C115

SRIN

4.7u/16V

9

C117

SLIN

4.7u/16V

10

GNDC

11

C120

CIN

4.7u/16V

12

GNDR

13

C122

RIN

4.7u/16V

14

GNDL

15

C124

LIN

4.7u/16V

16

BYPASR

17

BYPASL

C126

18

LTRE

822

19

C127

15n

C128

0.33u

LBASS3

20

LBASS2

21

LBASS1

-12V

A-6.8V A+6.8V

C129

47u/16V

C131 47n

R170
47K

R137

220/0.5W

VD101

6.8V

N104

M62446

C132 47n

+12V

R183
470K

R185
680

DVDD

CLK

DATA

LATCH

DGND
AGND

SWOUT

SROUT
SLOUT

COUT
ROUT
LOUT

AVSS

CR1

CR2

RTRE

RBASS3

RBASS2

RBASS1

47u/16V

5.2.3 SIGNAL Board 1

+12V-12V

1

822

C133

47u/16V

VD110

1N4148

C170
10u/16V

-12V

L103 100uH

C134

101

A-6.8V

C138
47u/16V

-12V

+12V

R184
20K

VD111

P_DISP

1N4148

R186
10K

+5VD

CLK

CLK

DATA

LAT

SW-1

SR-1

SL-1

C-1

R-1

L-1

DATA

LAT

SW-1

SR-1
SL-1

C-1
R-1
L-1

R141 100

C135

101

-

XS6

-12V

4

DGND

3

DGND

2

+12V

1

CON4

N105A

2
3

4558

8 4

+12V

C111

47n

42
41
40
39
38
37

C113 4.7u/16V

36

C114 4.7u/16V

35

C116 4.7u/16V

34

C118 4.7u/16V

33

C119 10u/16V

32

C121 10u/16V

31
30
29

CL1

CL2

C123

4.7u/16V

C125

4.7u/16V

C137 47n

28
27

26

C139

25
24

C140

15n

23

C141

0.33u

22

+12V

R138

220/0.5W

VD102

6.8VC130

5.2.4 SIGNAL Board 2

+12V

C211

47n

VD202

1N4148

C210 47u/16V

C212

5.6n

C213

5.6n

R206 1K

C220

47u/16V

10

1
2
3
4
5
6
7
8
9

N203 PT2315

REF
VDD
AGND
TREBL
TREBR
RIN
LOUD_R
NC
LOUD_L
NC

R207

47K

CLK

DATA

DGND

LOUT
ROUT

BOUT_R

BIN_R

BOUT_L

BIN_L

V201

9014

20

OK_CLK

19

OK_DAT

18
17

C214

16

4.7u/16V
C216

15

68n

C217

14

68n

13
12
11

LIN

C218

4.7u/16V

P_KT

P_KT

C219
103

OK_CLK
OK_DAT

R219 47K

R218 20K

C224

4.7u/16V
R220 10K

C226

101

-12v

R210

5.6K

R222

4.7K
C227

103

R225

C230

4.7u/16V

N202B

4558

6
5

7

22K

R226

2.7K
R227

C231

2.7K

4.7u/16V

12K

15K

10K

R228

R229

C234

C235

681

681

15

16

F1-I

F2-O14F1-O

VCC1REF2AG3DG4CLK5VCO6CC17CC0

N204
PT2399

R224
10K

C233

5.6n

2
3

R230

N202A

1

4558

8 4

R221 1K

C244

4.7u/16V

OK

OK

+12v

C228

4.7u/16V

C229

103
C232

5.6n

10K

R231

R232 15K

C236

C237

0.1u

0.1u

9

11

12

13

P1-I10P2-I

F2-I

P2-O

P1-O

-

8

C238

+12V

R234
220/0.5W

R233
20K

47u/16V
C242
47n

47u/16V

VD203

C240

103

C243

5.1V

C241

0.22u

C239

0.22u

R205

100/0.25W

VD201

9.1V

C201 151

R201 33K

C203

MIC

MIC

4.7u/16V

- 89 -

XP18
CON13

XS15

1
2
3
4
5
6
7
8
9

CON9

LAT

1

CE

2

CLK

3

DATA

4

DO

5

P_DIST

6

OK_DAT

7
8

9
10
11
12
13

OK_CLK
P_KT
Remote
DST
DCK
DDA

+5VD

RLYC
NC

DDA
DCK
DST
FAN
REMOTE

OK_DAT
OK_CLK

R202 4.7K

P_KT

N201B

4558

6
5

7

R203
1K

2
3

C204
10u/16V

C202 4.7u/16V

C205 10P

R204 100K

-12V

N201A

4558

8 4

+12V

C215

100u/16V

1

5.2.5 SIGNAL Board 3

R171 47K

SWM
L1
R1
C1
SL1
SR1

LINE OUT

XC104

1

XS9

CON7

XS13

CON5

C167
104

C169
104

2

1
2
3
4
5
6
7

1
2
3
4
5

SW-OUT

From AMP Board

-12V-12V

-

R187

47K

P_RLY
RLYC
LRM
SCM

C176

103

1

C175

C173

104

1000u/16V

+5VD

R167

1/0.5W

R147 15K

R155
47K

C151

104

XS12

P_RLY

1

+5V

2

DGND

3

L-1

4

R-1

5

PH_SW

6

GND

7

MIC

8

CON8

SW-1

SW-1

C-1

C-1

L-1

L-1

R-1

R-1

SL-1

SL-1

SR-1

SR-1

OK

OK

KM

KM

XP14

PH_SW

7

KM

6

P_RLY

5

P_LRM

4

CON7

PH_SW

P_LRM

P_SCM

XS21

CON3

PH_SW

XS11

CON3

FAN

P_SCM

3
2
1

+5VD

PH_SW

P_LRM

P_SCM

1
2
3

FAN

PH_SW

R145 1

1
2
3

R146 1

- 90 -

R142

4.7K

C148

22u/16V

R143

4.7K
R144

4.7K

VD103

1N4148
VD104

1N4148
VD105

1N4148
VD106

1N4148

V101

2N5401

R160
10K

R164

10K

V104

9014

VD108 1N4004

C103

104

VD109 1N4004

R158
100K

V102

S8050

LRM

LRM

SCM

SCM

R165

10K

VD107

1N4148

V103
9014

V105
S8050

C150
2200u/16V

4.7u/16V

C149

4.7u/16V

R148 10K

C146
103

R156 20K

R174
47K

R157 20K

C147

R159 15K

R176
47K

R161 20K

R162 15K

R178
47K

R163 20K

R180
47K

R166 20K

R182
47K

6
5

2
3

6
5

C160 47P

2
3

6
5

2
3

C154 103

N106B

C156 47P

R173 22K

N106A

8 4

C158 47P

R175 33K

N107B

R177 33K

N107A

8 4

C162 47P

R179 22K

N108B

C164 47P

R181 22K

N108A

8 4

5532

-12V

5532

+12V

5532

-12V

5532

+12V

5532

-12V

5532

+12V

7

1

7

1

7

1

C155 10u/16V

C157 10u/16V

C159 10u/16V

C161 10u/16V

R188 100

R189 100

R172 1K

C1

L1

P_RLY

RLYC
LRM
SCM

+12V +12V

R1

SL1

N109
AMS1085-5

SR1

3

C166

47u/16V

C168

47u/16V

GND

Vin

Vout

2

5.2.6 VIDEO Board

+12V

R100

R101

10K

N100

CD4052

12

XC100

VCD

DVD

VOUT

- 91 -

DSW-10-3A

1
2

R102

100

3
4

5
6

AV3

XL100B

11

78

910

R103

100

TC100

V-OUT

220U/16V

R107
100

12

R108
100

5

XL100A

12

34

R109

6

100
R110

DSW-10-3A

100

X0

14

X1
X2
X3

Y0
Y1
Y2
Y3
INH

B
A

X

Y

VDD

VSS
VEE

X

Y

VDD

VSS

VEE

15
11

1
5
2
4
6

9

B

10

A

N101

CD4052

12

X0

14

X1

15

X2

11

X3

1

Y0

5

Y1

2

Y2

4

Y3

6

INH

9

B

B

10

A

A

TC101

13

16V/10U

3

16

A+8.2V

8
7

A-8.2V

C100 47n

TC102

13

16V/10U

3

16

A+8.2V

8
7

A-8.2V

TC105

TC103 220U/16V

TC104

220U/16V

S-OUT1

S-OUT2

16V/10U

DSW-10-3A

XL100C

17

1314

1516

R114

18

10K
R118

10K

100

V-OUT

R104
10K

1015

V100

7.5V

R105

2.2K

-12V

A-8.2V A+8.2V

C101

47u/16V

VD100

V104

8550

+12V

R113
R112
10K

100

S-OUT1

V101

1015

R111
10K

+12V

R117
R116
10K

100

S-OUT2

1015

R115

V102

10K

C102 47n

B
A

+12V
DGND

-12V

47u/16V

C103

XS100

CON3

X100

1
2

CON2

1
2
3

V103
8050

VD101

7.5V

+12V

R106

2.2k

-

5.2.7 Key Scan Board

VFD101
HL-D253

-30V

F1F2NOP3G15G26G37G48G59G610G711G812G913G1014G11

P143P242P341P440P539P638P737P836P935P1034P1133P1232P13

NOP44NOP45F46F

47

NOP16NOP17NOP18NOP19NOP20NOP21NOP22NOP23NOP24NOP25NOP26NOP27P1628P1529P14

30

31

C101

104

15

-30V

NOP

4

+5VD

32

33

34

36

39

VEE

GR837GR738GR6

VDD

SG13/GR1627SG14/GR1528SG15/GR1429SG16/GR1330SG17/GR1231SG18/GR11

26

SG12/KS12

25

SG11/KS11

+5VD

24

SG10/KS10

23

SG9/KS9

22

SG8/KS8

21

SG7/KS7

20

SG6/KS6

19

SG5/KS5

18

SG4/KS4

17

SG3/KS3

16

SG2/KS2

15

SG1/KS1

14

VDD

- 92 -

+5VD

N101 PT6311

SG19/GR1035SG20/GR10

VDD
LED5
LED4
LED3
LED2
LED1

GND

OSC

SW11SW22SW33SW44DOUT5DIN6NC7CLK8STB9K110K211K312K4

40

GR5

41

GR4

42

GR3

43

GR2

44

GR1

45
46

R107

47

47K

48
49
50
51
52

C106 104

+5VD

R106

100/0.25W

VD104
5R3HD

R108

4.7K

C105

47u/16V

30V/1W

+5VD

VD101

R121

100/0.25W

VD105
5R3HD

V101

2N5551

R112

47/0.5W

VD102

5.6V/0.5W

R115

4.7k/0.25w

47u/35V

+5VD

C109

47u/16V R122 100

+5VD

R117
10K

C111

103

13

S101

RP101B

INPTUSET

RVP-1

R101

R102

10k

10k

C102

C103

221

221

R103 470

R104 470

R105 470

C104

221

R111

R110

R109

4.7k

4.7k

4.7k

+5VD

R113

270/0.5W

C107

R116

100

R118

10K

C112

103

VD103
1N4004

R114

1/0.25W

C108

100u/35V

N102 HS0038A2

3

C110

103

VS

OUT

2

GND

R119

RP101A

100

3
2
1

R120

RVP-1

100

L101 100uH

47u/16V

C113

1

P_RLY

DDA
DCK
DST
FAN
REMOTE

XS10

CON5

XP15

CON9

1

~V3

2

~V3

3

F1

4

0

5

F2

1
2
3
4
5
6
7
8
9

+5VD

C114

103

From TRANS

-

From Signal Board

5.2.8 MIC Board

C102

100u/16V

L101
47uH

C108
104

C110

R101

47K

473

R103 4.7K

C103

10u/16V

C105
10u/16V

+5V

R105

XP14

CON8

P_RLY

1

+5VD

2

DGND

3

L-1

4

R-1

5

PH_SW

6

GND

7

MIC

8

4.7K

C109
104

R111
47K

- 93 -

R104 4.7K
C111
473

C104 10u/16V

R102

47K

C100 103

+5V

84

N100A
LM4880

3
2

R106

10K

V101
8050

5
6

R107 10K

R108 10K

N100B
LM4880

C106 330u/16V

1

C107

7

330u/16V

R109

47K

X100

+5V

PH_R
PH_L

R110

47K

9
8
7
6
5
4
3
2
1

MIC

-

R100
4K7

C101 103

MIC

5.2.9 POWER Board 1

C100

22n

VD100
1N5404

VD101

FL100

XS1

T6.3AL250V

2
1

CON2

~220V 50HZ

XP7

4

OVER

3

P_RC

2

RLY0

1

SWM

From AMPFrom AMP

L2
R2
C2
SL2
SR2
VC+
GND
GND
VC-

XP8

CON9

CON4

1
2
3
4
5
6
7
8
9

- 94 -

VC+

VC-

RLY0
SWM

C102

CT7 472

VD108

IN4148

XS2

1

TO SWITCH

2

CON2
XS3

1

TO TRANS

2

CON2

VD113

R100

47/3W

1N4004

R102

1K

2.2u/16V

R101
10K

R103
47K

R111

4.7/1W

R112

4.7/1W

R113

4.7/1W

R114

4.7/1W

R115

4.71W

C126

C116 0.1u

C117 0.1u

C118 0.1u

C119 0.1u

C120 0.1u

V100
C9014

R104
10K

L100

0.7UH

L101

0.7UH

R105
10K

V101
C9014

From TRANS

XS4

~V1

0
~V1
V-RLY

CON4

C110

100u/35V

V102
C9014

R116
51K

R117
51K

R118
47K

R119
47K

R120
47K

1
2
3
4

C122

R106

104

4.7K

C113

R109

220u/16V

10k

C114

220u/16V

1

2

XL101A

WP6

C103

0.22u

C104

0.22u

VD110

IN4148

R108

100K

R107

100K

1

2

C121
103

XL101A

WP6

FL101

T8AL250V

FL102

T8AL250V

V103
C9015

C115
47U/25V

C101 22n

C105 22n

C111 22n

VD111

5.1V R110

Y100

9

10

11

12

13 14

RELAY-4

VD112

1N4148

1N5404

VD102
1N5404

VD103
1N5404

VD104
1N5404
VD105

1N5404

VD106
1N5404
VD107
1N5404

C108
8200u/63V

C109
8200u/63V

C123

103
C112

103

56K

Vc+

C106

0.1u

C107

0.1u

Vc-

-

XL101A

XL100A

1
5

2
6

3
7

4
8

SWM
RLY0

1

2

WP6

V104
C8050

XL100A

1

1

2

2

WP4

WP4

V105
C9014

5.2.10 POWER Board 2

C103

47u/100V

R1052KR106

2K

C101

R101

10K

V101

VD101

1N4148

XP9

SWM

1

L1

2

R1

3

C1

4

SL1

5

SR1

6

GND

7

CON7
XP13

GND

1

P_Rly

2

P_RC

3

P_LRM

4

P_CSM

5

CON5

- 95 -

C121

22u/16V

S8050

R161

4.7K
V115

2N5401

R162

V116

10K

S8050

R103

1K

R102
100K

R131

10K

R133

1K

R132
100K

10u/16V

C111

10u/16V

V102

2N5551

2N5551

C104
220p

R107 47

100u/16V

V104

2N5551

C107

47u/100V

R1352KR136

V117
2N5551

C114
220p

R137 47

100u/16V

V119

2N5551

C117

47u/100V

R110

R140

510

510

R108

47
R109 1K

C105

2K

V118

2N5551

R138

47
R139 1K

C115

R104
47K

C113

47u/100V

R134
47K

V103

VD102
1N4148

VD103
1N4148

VD105
1N4148

VD106
1N4148

33p/500V

R111
33K/0.5W

2N5551

33p/500V

R141
33K/0.5W

2N5551

C108

V106

R115

1.2K

R112

1K

C118

V121

R145

1.2K

R142

1K

Vs+

R163

10K

R165

4.7K

R166

4.7K

C122

22u/16V

C123

22u/16V

V130
2N5401

R164

33K

Vs+

C127

53

R167

4.7K

C124

10u/16V

R169

V131

47K

S8050

C125

R168
10K

22u/16V

R170

820

47n

1
2

27K

C126

68p

4

N104

LM1875R171

C128

47n

Vs-

R114 2.7K

R144 2.7K

R113

150

V105

2N5401

V107

2N5551

R116

150

R143

150

V120

2N5401

V122
2N5551

R146

150

R117

100/0.5W

R125

100/0.5W

R147

220/0.5W

R155

220/0.5W

V132

C2073

R121

C109

33K

47n

V133
A940

R120

100/0.25W

R122

100/0.25W

V112

2SD1047C

R126

0.25/7W

R127

0.25/7W

V113
2SB817C

R128

4.3K
R129

2.7K
1u/16V

R130

4.3K

Vc-

V134

C2073

R150

100/0.25W

R151

C119

33K

47n

R152

100/0.25W

V135

A940

V127

2SD1047C

R156

0.25/7W

R157

0.25/7W

V128
2SB817C

Vc+

R158

4.3K
R159

2.7K
1u/16V

R160

4.3K

Vc-

C130 1u/50VC129

1u/50V

C158

471

C157

471

C131

22u/16V

R172 47K

R176

47K

C132

22u/16V

VD104

1N4148

V114

2N5551

C110

N101

C146

L7812

220u/25V

R183

1

C147

220u/25V

Vin

2
1

2

Vin

N102
L7912

Vs+

15/2W

VD107

1N4148

V129

2N5551

C120

R184

Vs-

15/2W

GND

GND

Vout

Vout

100u/16V

3

3

C149

100u/16V

C148

C150

47n

C151

47n

-

L2
R2
C2
SL2
SR2

GND

FL101

T6.3A250V

FL102

T6.3A250V

C143

C144

R174

820

R173 1K

R177

1K

R178

820

C155 47p

N105
LM1876

7
8

6

11

9

14

13
12

C156 47p

MUTEA
MUTEB
STAN-A
STAN-B

R182 33K

R175

24K

3

OUTA

A

B

R179

24K

VDDA
GNDA
VDDB
GNDB

VEE

OUTB

R185 33K

C134

104

2

Vs+

5
15

Vs+

C135

10

104

4

Vs-

C136

104

1

C159

10u/100V

C139

47n

C140

47n

C141

4700u/35V

C142

4700u/35V

VD111

1N5404

VD112

1N5404
VD113

1N5404

VD114
1N5404

Vc+

XS7

SWM

1

Rly0

2

P_RC

3

Over

4

CON4

XP6

+12V

1

DGND

2

DGND

3

-12V

4

CON4

XS8

1
2
3
4
5
6

Vc+

7
8
9

Vc-

CON9

XS5

0.1u

0.1u

CON3

1
2
3