Mystery MBS-204A Technical documentation

TABLEOFCONTENTS
INSTRUCTIONSFORFUNCTIONS..........................3
ELECTRICALCONNECTION....................................4
HOOKUP.................................................................5
TROUBLESHOOTINGGUIDE..............................................6
WARNING..............................................................................7
SYSTEMWIRING.....................................................8-12
EXPLODEDDRAWING...............................................13
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SPECIFICATIONS
INSTRUCTIONSFORFUNCTIONSANDCONTROLS
ModelMBB-204A
RMSPower@13.8vDC
4Ohmstereo60Wx1 2Ohmstereo90Wx1 Sub-woofer@4Ohms200Wx1
SpeakerImpedance4Ohm THDDistortion<0.08% IMDDistortion<0.08% FrequencyResponse50Hz~160Hz InputSensitivity200mV~2V InputSensitivity2V~20V InputImpedance15K Signal-to-NoiseRatio85dB
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RemotegainControl0.2V~+6V CrossoverNetwork
Sub-wooferFilter40Hz~160Hz
BassBoost0dB~+12dB IndicationLEDgreen/red Protection(Short,Temperature)yes SizeLxWxH350x232x70mm
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Tobeconnectedwiththeremotecontroller,whichhelpstoboostthegain. Plstruntheknobofvolumetobemaximumbeforeusingtheremote.
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ELECTRICALCONNECTION
+12V
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Anodeofpowerconnectionterminals.Connecttotheanodeofcarbattery.
REM
TerminaltobeconnectedwithRemotecable,whichcomesfromthesourceandwhich controlstheamplifierswitchingon.Appliedvoltagemustbebetween7and15VDC.
GND
Groundterminal.Connecttothecarchassis.Keepthelengthofthegroundcable toaminimum.
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-
-
HOOKUP(LOWINPUT)
+ +
Car amplifier
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TROUBLESHOOTINGGUIDE
SYMPTOMS CHECKPOINTS
Inthepower LEDilluminated?
NOSOUND
IstheDiagnosis LEDilluminated?
CURE
Checkfusesinamplifier. BesureTurn-onleadisconnected Checksignalleads.Checkgain control. CheckTuner/Deckvolumelevel. Cleancontactsonfuseholders.
Checkforspeakershortor amplifieroverheating.
WARNING
InvestigatetheLayoutofyouautomobilethoroughlybeforedrillingorcuttinganyholes. Takecarewhenyouworknearthethanks,lines,orhydrauliclines,andelectricalwiring. Dontmountthissystemsothatthewireconnectionsateunprotectedaresubjectto pinchingordamagefromnearbyobjects. The+12VDCpowerwiremustbefusedatthebatterypositiveterminalconnection. Beforemakingorbreakingpowerconnectionsatthissystempowerterminals,disconnect the+12Vwireatthebatteryend. Confirmyourradio/cassetteplayerand/orotherequipisturnedoffwhileconnectingthe inputjacksandspeakerterminals. Ifyouneedtoreplacethepowerfuse,replaceitonlywithafuseidenticaltothat suppliedwiththesystem.Usingafuseofdifferenttypeorratingmayresultindamageto thissystemwhichisntcoveredbythewarranty.
AMPNOT SWITCHING ON
NOSOUND INONE CHANNEL
AMP TURNINGOFF MEDIUM/HIGH VOLUME
PROTECTION LEDON(RED)
Nopowertopowerwire Nopowertoremote
wirewithreceiveron Fusebroken
CheckSpeakerLeads
CheckAudioLeads
CheckSpeakerload impedance
Temperatureshutdown Speakerwiresshortcircuit
Repairpowerwireorconnections.
Checkconnectionstoradio. Checkfuse Inspectforshortcircuitoran
openconnection. ReverseLeftandRightRCAinputs
todetermineifitisoccurring beforetheamp.
Besureproperspeakerload impedancerecommendations areobserved.
(Ifyouuseanohmmetertocheck speakerresistance,please rememberthatDCresistanceand ACimpedancemaynotbethe same.)
Turnradiodown Separatespeakerwiresandinsulate
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6782 43
153-071010-08-00TopcoverHeatsinkAL1 253-071020-08-00BottomcoverHeatsinkAL1 357-070B00-29-00IronnetIron1 400-000000-00-00Speaker8Inch1 506-010244-1100PCBAboard1 659-012101-5015screw8
759-033303-3005Insidehexangularscrew2 857-071300-06-09DecorateIronbar1
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