PROEL HP-X series Manuale utente

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ServiceManual

HPXSeries

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ApplicableModels:

HPX4600

HPX6000

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TableofContents

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1SafetyInstructions............................................................................................................................................... 3

2TechnicalSpecification ........................................................................................................................................ 4

3BlockDiagram...................................................................................................................................................... 5

4SignalFlowchart .................................................................................................................................................. 6

5MalfunctionAnalysisonSMPS(PowerSupply)................................................................................................... 7

6MalfunctionAnalysisonInputModule ............................................................................................................. 12

7MalfunctionAnalysisonDisplayModule .......................................................................................................... 13

8MalfunctionAnalysisonPre‐AmplifierModule ................................................................................................ 14

9MalfunctionAnalysisonProtectionModule..................................................................................................... 16

10MalfunctionAnalysisonPowerOutputStageModule................................................................................... 17

11SpecialNotes ................................................................................................................................................... 18

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1SafetyInstructions

1.1Duetohighvoltageinternal,pleasebecarefulduringtroubleshootingandmaintenancecourse.

Pleasereadtheusermanualandthismaintenancemanualfirst.

1.2Duetothewrongoperationincheckingandrepairingcoursewillresultstoruineddamageonsomeparts,sopleaseoperate

followthismanual.

1.3ThemaintenancepersonmustbeONLYaqualifiedprofessionalpersonnelauthorizedbyPROEL.

1.4Don’treplacethekeydevicesandadjusttheadjustablepotentiometersbyyourself,itwillchangetheparameterofthe

equipment.

1.5Pleasecutoffthepowertoguaranteethesafetyoftheservicepersonwhenrepairing.

1.6Thedevicesmarked  inthedrawingindicatesakeydevice,pleasereplaceitONLYwithasparepartspecifiedbyPROEL.

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2TechnicalSpecification

MODELHPX4600HPX6000

Power8ohm*850W1200W

Power4ohm*1400W2000W

Power2ohm**2300W3000W

PowerBRIDGE8ohm*3000W4100W

PowerBRIDGE4ohm**4600W6000W

OutputStageClass3H

Frequencyresponse(+0/‐0.5dB)20Hz‐20KHz

InputSensitivity(selectable)0.775Vrms(0dBu)/1.0Vrms(0dBV)/32dB(fixedGAIN)

InputConnectors/ImpedanceXLRM(withXLRFLINK),20Kohm(balanced),10Kohm

(unbalanced)

OutputConnectorsSPEAKONandBindingPost

DampingFactor>200

SlewRate>20V/uS

S/NRatio(unweighted)>90dB

THD+N<0.1%

ControlsINPUTLEVEL,INPUTSENSITIVITY,STEREO/BRIDGE/PARALLEL,SOFT

CLIPPING

LEDIndicatorsPOWER,ON,PARALLEL,BRIDGE,SIGNAL,LIMIT,PROTECT

CoolingVariablespeedDCfan

ProtectionsAClowpower,DC,thermal,shortcircuit,VHF,CLIPlimiter,SOFT

CLIPlimiter

MainsSupplyVoltage230VAC(±10%)50/60Hzor120VAC(±10%)50/60Hz

MaximumConsumption2330VA3320VA

RatedConsumption***620VA830VA

StandbyConsumption5VA6VA

Dimensions(WxHxD)483x89x505mm19"x3.5"x19.9"(2Urack)

Weight13Kg(28.7lb)13,6Kg(29.9lb)

*RMSbothchannelTHD<1%

**40msburst

***Ratedconsumptionismeasuredwithpinknoisewithacrestfactorof12dB,thiscanbeconsidered

astandardmusicprogram.

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3BlockDiagram

3.1HPX4600/HPX6000BlockDiagram:

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4SignalFlowchart

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5MalfunctionAnalysisonSMPS(PowerSupply)

5.1CircuitDiagramofAuxPowerSupplyModule:

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5.2MalfunctionAnalysisonAuxPowerSupplyModule:

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Sequence

No.

Circuitto

check

MostProbablyFailures

1

AuxPower

Supply

Board

STYLEDisoff;theequipmentisunavailabletostart.

‐Checkthecircuit,seeiftheCN1pinandthecopperfoilofAuxPower

Supplyisbroken;Whenamplifierconnectstopowersupply,theAux

PowerSupply(self‐activatedswitch)willstarttowork,itprovidestwo

groupstandbypowersupply+5V&+16V.Amongthem,CN3/+5Visfor

poweron/offled(orange),CN1/12foot/+16Visforthemainpower

controlboard,themainpoweron/offiscontrolledbytheCN4/(1)(3)in

plug.WhentheCN4/(1)(3)isclosed,OP3/817willbeconnected,

Q2/8050willbedownedtolowlevel(VPI).

RepairingGuide:Whenrepairingthepowerboard,pleasecuttheDC/300Vfuse,seriesconnecta

100W—200Wlamptostartthemachine,preventingthedamageofrelateddevicewhenrepairing.

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5.3CircuitDiagramofSMPSControlModule:

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5.4MalfunctionAnalysisonSMPSControlModule:

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Sequence

No.

Circuit

Function

Failure

1SMPSControl

‐Theequipmentisunavailabletostart;

‐Protectionfunctionwillbeactivatedwheninlowimpedanceoutput;

‐Cyclicprotectionoftheswitchpower;

‐Delaystart,over‐voltagePROT,low‐voltagePROTandovercurrent

PROT.

RepairingGuide:

1)Whenrepairingthecontrolboard,youcancuteveryprotectcircuitgraduallyfoundthedefective

area!

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5.5CircuitDiagramofEMCModule:

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5.6MalfunctionAnalysisonEMCModule:

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Sequence

No.

Circuit

Function

Failure

1LineFilter

‐RestrictiononEMIandRFITheequipmentisunavailableto

start‐up,theACfuseoftherearpanelisburntwhenconnectedthe

electricitychecktheRT1componentandseeifthereisshortcircuit.

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5.7CircuitDiagramofLowVoltagecontrolcircuit:

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5.8MalfunctionAnalysisonLowVoltagecontrolcircuit:

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Sequence

No.

Circuit

Function

Failure

1Low‐voltage

Control

‐Theequipmentcannotbestarted:LM2596zenerwilloutput

‐onegroup+24V,providedpowersupplyfortherelay,fansand

LEDonfrontpanel.Amplifierprotection:±15Vpowersupplyis

abnormal.Fansarestopped,quickorslowworking.Soft‐start

resistorisburntonpowersupply.

‐Connectingthejumperof110VandACIport,thedoublevoltage

rectifierwillletthecircuitworkwith110Vand120Vmainsvoltage.

RepairingGuide:

Equipmentcannotbestarted,buttheLEDoncontrolboardisnormal.Pleasecheckifthe+24V

powersupplyofCN6connectorisnormalornot.

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5.9CircuitDiagramofSMPSPSUModule:

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5.10MalfunctionAnalysisonSMPSPSUModule:

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Sequence

No.

Circuit

Function

Failure

1

Soft‐start/

Rectifier

Filter

‐Smokecomesoutbutstillworkswhenpoweroutput,focusto

checkwhethertherelaydoesnotpull‐inresultsNPTR1,NPTR2

thermistorburntduetoover‐current;

‐Connectthejumperof110VandACIporttoformthevoltage

doublingrectifyingcircuit,thenitcanworkin110Vand120Vvoltage

program;

‐Rectifiedfiltercircuitshort‐circuitandcauseburntoftheACinput

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