PROEL HP-X series User manual

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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