LEM-KLActive-pwr-sm 维修电路原理图.pdf

Index? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?M/F faston connector.? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541/959511 - fax 0541/957404GENERALMUSIC on the NET: http:/SERVICE MANUALL CODE: 270223MWarnings? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?AddressATTENTION! ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?Notice? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? # ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? # ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? $ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? %? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? # ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? & ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? # ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? %? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ( ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? * ? ? ? ? ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? + , - ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? . / 0 1? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 2 ! ? ? 2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 3 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? + 4 5 ! ? ?/ - ?2346 ? ? ? & ? 3 ? ? ? ? ? ? 7 ? 8 ? ? ? ? ? # ? ! ? ? ? ? ? ? ? 9 ? ? ? ? ? ? ? ? ? ? 6 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 7 ? ? ? ? ? ? ? : ? ? ? ? ? ? ? ?; 4 4 1? : ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 5 ; ? ? ? ? ? ? ? )? ? ? ? ? ? ? ? ? ? ? ? ? ?RadioFans.CN 收音机爱 好者资料库 2 2 2 2 2RadioFans.CN 收音机爱 好者资料库3 3 3 3 3 4 4 4 4 4Spare Parts ListSpare Parts ListSpare Parts ListSpare Parts ListSpare Parts ListLegendLegendLegendLegendLegend(US) =Specify USA version(EU) =Specify Europe versionCodeDescriptionOptional AccessoriesOptional AccessoriesOptional AccessoriesOptional AccessoriesOptional Accessories950978SC31 Telescopic Alluminium Support951136Mains Link Cable for KL-K6 Active141208*Mains Power Grey Plug (NTPW3FCB Neutrik)141205*Mains Power Blue Plug (NTPW3FCA Neutrik)AccessoriesAccessoriesAccessoriesAccessoriesAccessories277329Owners Manual887090Mains Cable (2.5m) (US)887089Mains Cable (2.5m) (EU)141205*Mains Power Blue Plug (NTPW3FCA Neutrik)130434*Mains Cable (US)130285*Mains Cable (EU)1901375mm Hexagonal Rod Spanner1201426x35 Screw with Hex . HeadCabinet AssemblyCabinet AssemblyCabinet AssemblyCabinet AssemblyCabinet Assembly841179Speakers Cables Assembly717066Cabinet Chassis667682Metal Grid347378Front Panel22706215 Speaker210242Filler for Speaker Box (Specify mt)190181Rubber Foot with M8 Screw177676Metal Grid Fixing177325Bespeco Flange600W Power Amplifier Assembly600W Power Amplifier Assembly600W Power Amplifier Assembly600W Power Amplifier Assembly600W Power Amplifier Assembly737101737101737101737101737101600W Power Amplifier Assembly (EU)600W Power Amplifier Assembly (EU)600W Power Amplifier Assembly (EU)600W Power Amplifier Assembly (EU)600W Power Amplifier Assembly (EU)737102737102737102737102737102600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)778143*Amplifier Cables Assembly667691*Power Amplifier Bottom Chassis667690*Power Amplifier Left Chassis667573*Power Amplifier Top Chassis667571*Power Amplifier Right Chassis667689*Power Amplifier Control Panel667575*Fan Grid659027*White Potentiometer Knob659026*Orange Potentiometer Knob238074*Transformer 230Vac 690W (EU) (K6)238075*Transformer 115Vac 690W (US) (K6)210259*Fan Foam Filter210215*Adhesive Rubber Foam 10 x1.9mm (Specify mt)141207*Mains Power Grey Socket (NTPW3MPB Neutrik)141204*Mains Power Blue Socket (NTPW3MPA Neutrik)110291*Power Switch110120*Fuse Clip (US)110119*Fuse Clip (EU)110038*T16A Fuse 6.3x32mm (US)110026*T1.25A Fuse 6.3x32mm (US)110013*T1.25A Fuse 5x20mm (EU)080607*KBPC25 25A 200V Rectifier Diode Bridge030890*10000u 125V -10+50% V Electrolytic Capacitor VT020491*100nF 10% 250Vac Polyester Capacitor768199768199768199768199768199* * * * *Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)141189*Combo Connector141186*Hor Male XLR Socket (NC3MAH Neutrik)141011*6 Contacts Vert Female Connector141010*4 Contacts Vert Female Connector110267*1sw 2pos Horizontal Slider Switch080293*15V 1W 5% Zener Diode768200768200768200768200768200* * * * *Stereo Cross-over & Controls Board (PCB#313056)Stereo Cross-over & Controls Board (PCB#313056)Stereo Cross-over & Controls Board (PCB#313056)Stereo Cross-over & Controls Board (PCB#313056)Stereo Cross-over & Controls Board (PCB#313056)141011*6 Contacts Vert Female Connector141010*4 Contacts Vert Female Connector140929*9 Contacts Vert Male Connector110305*Relay 12V / 2 Switch 1A 250V110267*1sw 2pos Horizontal Slider Switch100919*MC33078 Dual LN Operational Amplifier100084*TL074 Quad J-Fet Operational Amplifier100061*TL072 Dual J-Fet Operational Amplifier100019*TL071 LN J-Fet Operational Amplifier090194*BC560 TO92 LN Pnp Transistor090183*BC550 TO92 LN Npn Transistor080901*VTL5C4 Analog Optoisolator080743*3mm Wide Diffused Green Led080734*Led 2.5x5mm Rect Diffused Red-Grn080293*15V 1W 5% Zener Diode080168*W02M 1.5A Rectifier Diodes Bridge080156*1N4002 1A 100V Rectifier Diode080103*1N4148 100mA 75V Signal Diode075820*4x100K 16mm Hor Rotary Alog Potentiometer074570*5K 31steps Linear Potentiometer070186*10K 20% Vertical Linear Trimmer042730*115K 1/4W 1% Metalized Film Resistor042665*33K2 1/4W 1% Metalized Film Resistor042628*16K5 1/4W 1% Metalized Film Resistor042625*15K0 1/4W 1% Metalized Film Resistor042605*10K0 1/4W 1% Metalized Film Resistor042565*4K99 1/4W 1% Metalized Film Resistor737095737095737095737095737095* * * * *600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040)090924*MJL21194 TO264 Npn Transistor090923*MJL21193 TO264 Pnp Transistor230530*1uH 10% 630ma Rf Coil140917*2 Contacts Vert Male Connector110316*Relay 24V / 1 Switch no 16A 250V100061*TL072 Dual J-Fet Operational Amplifier100060*7815 +15V 1A Voltage Regulator100049*7915 -15V 1A Voltage Regulator090920*MJE802 TO126 Npn Darl Transistor090201*2N5401 TO92 Pnp Transistor090200*2N5550 TO92 Npn Transistor090194*BC560 TO92 LN Pnp Transistor090183*BC550 TO92 LN Npn Transistor080282*13V 1W 5% Zener Diode080245*7V5 1W 5% Zener Diode080168*W02M 1.5A Rectifier Diodes Bridge080158*1N4006 1A 800V Rectifier Diode080156*1N4002 1A 100V Rectifier Diode080103*1N4148 100mA 75V Signal Diode070106*470E 20% Horizontal Linear Trimmer042725*100K 1/4W 1% Metalized Film Resistor042685*47K5 1/4W 1% Metalized Film Resistor042565*4K99 1/4W 1% Metalized Film Resistor042564*4K75 1/4W 1% Metalized Film Resistor042557*4K32 1/4W 1% Metalized Film Resistor042345*75E0 1/4W 1% Metalized Film Resistor030715*1000u 6v3 20% Vert Electrolytic Capacitor030526*2200u 35v 20% Snap-In Electrolytic Capacitor140929*9 Contacts Vert Male Connector140068*3 Contacts Terminal Block110120*Fuse Clip (US)110119*Fuse Clip (EU)090919*MJE15031 TO220 Pnp Transistor090918*MJE15030 TO220 Npn Transistor090917*MJE350 TO126 Pnp Transistor090916*MJE340 TO126 Npn Transistor090183*BC550 TO92 LN Npn Transistor080820*Ptc 80 PTH59F04BF222TS727567*Fan Assembly110363*24Vdc (80 x32cm) Fan210215*Adhesive Rubber Foam 10 x1.9mm (Specify mt)177603*Amplifier Board SupportWiring ConnectionsWiring ConnectionsWiring ConnectionsWiring ConnectionsWiring Connections841180*9 Wires 12.5cm Length Crimp Terminal Cable840803*6 Wires 12.5cm Length Flat Cable840768*4 Wires 10cm Length Flat CableNote:Each spare part is single quantity unless otherwise specified.Asterisk prefix explanation:Omitted= First level spare part.One asterisk= Second level, part of previous listed first level part.Two asterisk= Third level, part of previous listed second level part.Three asterisk = .Any request for not above mentioned part must encompass specific description including:1) Model name,2) Section name,3) Module code,4) Reference name,5) Quantity number.Tecnichal SpecificationsK L APOWER (EIA RS-426A)Watts EIA550HANDLINGWatts IHF600DISTORTION(THD+N)0,02%INPUT IMPEDANCEKohms30 balanced15 unbalancedINPUT SENSITIVITYdB0 (0,775 V) with LOW spin OFF-6 (0,387 V) with LOW spin ONPOWER SUPPLY 230Vac +/-15% 50-60Hz - 115Vac +/-15% 50-60HzSENSITIVITY (SPL 1W/1m)dB98MAX SPL continousdB118MAX SPL peakdB121FREQUENCY RESPONSEHz (-10dB)40320COMPONENTS 15 WooferCONSTRUCTIONSCabinet: birch plywood.Finish: Black scratch-resistant paintMetal GrillePolyurethane front panelCONTROLSVolume Control.SHIELDLimiter ON/OFF.CONNECTIONSCombo - 1 XLR-MPOWERCON power connectorDIMENSIONmm (LxAxP)542x656x537WEIGHTkg41,6BIAS ADJUSTEMENTBIAS ADJUSTEMENTBIAS ADJUSTEMENTBIAS ADJUSTEMENTBIAS ADJUSTEMENTI I I I Instruments, materials and tools:nstruments, materials and tools:nstruments, materials and tools:nstruments, materials and tools:nstruments, materials and tools:- Audio Generator- Dual Trace Oscilloscope with 10 x prober.- Digital Voltmeter (or Multimeter)- 8W 1000W Resistor- Temperature MeterSetup:Setup:Setup:Setup:Setup:- Connect the Audio Generator to the input and set it to output 1KHz sinusoidal signal.- Connect the Dual Trace Oscilloscope to the input (set CH1trace at 0.5V/div. 200usec./div) and to the output (set CH2 trace at 20V/div. 200usec/div) of the amplifier. WARNING: The oscilloscopeWARNING: The oscilloscopeWARNING: The oscilloscopeWARNING: The oscilloscopeWARNING: The oscilloscopemust be earth insulated.must be earth insulated.must be earth insulated.must be earth insulated.must be earth insulated.- Insert the temperature sensor through the interstize between the heatsink and R15 (PTC).- Unconnect amplifiers output from the cross-over and connect the 8W 1000W resistor instead of it.- Insert the voltmeter terminals across R22.ADJUSTMENT PROCEDUREADJUSTMENT PROCEDUREADJUSTMENT PROCEDUREADJUSTMENT PROCEDUREADJUSTMENT PROCEDURE1) Turn on the amplifier.2) Set the input signal to obtain approximatelly 120Vpp on the output.3) When the temperature has reaches about 50C (122F) set the input levelto minimum4) Adjust the trimmer VR1 to read a voltage of 30.05mV on the multimeter.5) Check that the voltage across the R74 resistor has the same value.6) At the same temperature condition, adjust the VR2 trimmer to read 40.05mV across R26 resistor.7) Check that the voltage on the R78 resistor has the same value.Verifing:Verifing:Verifing:Verifing:Verifing:1) Increase the input level to obtain an output voltage about of 0.5Vpp.2) Check with the oscilloscope that the output signal is without a cross-talk distortion and eventually slightly adjust the VR1 position until distortion disappears. (Note: the voltage value across the R22and across R74 resistor must not exceed 5mV)3) Re-connect the cooling fan and the crossover instead of the 8W 1000W resistor.