LEM-KLActive-pwr-sm 电路图维修手册.pdf

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2、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? GENERALMUSIC S.p.A. Sales Division: 47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541/959511 - fax 0541/957404 GENERALMUSIC on the NET: SERVICE MANUAL L CODE: 270223M Warnings ? ? ? ? ? ? ? ? ? ? ? ?

3、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Address ATTENTION ! ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? Notice ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

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5、 ? # ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? # ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? $ ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? %? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? # ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

6、? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 4 4 1? : ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 5 ; ? ? ? ? ? ? ? ) ? ? ? ? ? ? ? ? ? ? ? ? ? ? RadioFans.CN 收音机爱好者资料库 2 2 2 2 2 RadioFans.CN 收音机爱好者资料库 3 3 3 3 3 RadioFans

7、.CN 收音机爱好者资料库 4 4 4 4 4 Spare Parts ListSpare Parts ListSpare Parts ListSpare Parts ListSpare Parts List LegendLegendLegendLegendLegend (US) =Specify USA version (EU) =Specify Europe version CodeDescription Optional AccessoriesOptional AccessoriesOptional AccessoriesOptional AccessoriesOptional Acc

8、essories 950978SC31 Telescopic Alluminium Support 951136Mains Link Cable for KL-K6 Active 141208*Mains Power Grey Plug (NTPW3FCB Neutrik) 141205*Mains Power Blue Plug (NTPW3FCA Neutrik) AccessoriesAccessoriesAccessoriesAccessoriesAccessories 277329Owners Manual 887090Mains Cable (2.5m) (US) 887089Ma

9、ins Cable (2.5m) (EU) 141205*Mains Power Blue Plug (NTPW3FCA Neutrik) 130434*Mains Cable (US) 130285*Mains Cable (EU) 1901375mm Hexagonal Rod Spanner 1201426x35 Screw with Hex . Head Cabinet AssemblyCabinet AssemblyCabinet AssemblyCabinet AssemblyCabinet Assembly 841179Speakers Cables Assembly 71706

10、6Cabinet Chassis 667682Metal Grid 347378Front Panel 22706215 Speaker 210242Filler for Speaker Box (Specify mt) 190181Rubber Foot with M8 Screw 177676Metal Grid Fixing 177325Bespeco Flange 600W Power Amplifier Assembly600W Power Amplifier Assembly600W Power Amplifier Assembly600W Power Amplifier Asse

11、mbly600W Power Amplifier Assembly 737101737101737101737101737101600W 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)6

12、00W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US)600W Power Amplifier Assembly (US) 778143*Amplifier Cables Assembly 667691*Power Amplifier Bottom Chassis 667690*Power Amplifier Left Chassis 667573*Power Amplifier Top Chassis 667571*Power Amplifier

13、 Right Chassis 667689*Power Amplifier Control Panel 667575*Fan Grid 659027*White Potentiometer Knob 659026*Orange Potentiometer Knob 238074*Transformer 230Vac 690W (EU) (K6) 238075*Transformer 115Vac 690W (US) (K6) 210259*Fan Foam Filter 210215*Adhesive Rubber Foam 10 x1.9mm (Specify mt) 141207*Main

14、s Power Grey Socket (NTPW3MPB Neutrik) 141204*Mains Power Blue Socket (NTPW3MPA Neutrik) 110291*Power Switch 110120*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 Bridge 030890

15、*10000u 125V -10+50% V Electrolytic Capacitor VT 020491*100nF 10% 250Vac Polyester Capacitor 768199768199768199768199768199 * * * * * Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055)Inputs & Outputs Connectors

16、Board (PCB#313055)Inputs & Outputs Connectors Board (PCB#313055) 141189*Combo Connector 141186*Hor Male XLR Socket (NC3MAH Neutrik) 141011*6 Contacts Vert Female Connector 141010*4 Contacts Vert Female Connector 110267*1sw 2pos Horizontal Slider Switch 080293*15V 1W 5% Zener Diode 768200768200768200

17、768200768200 * * * * * 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 Connector 1

18、41010*4 Contacts Vert Female Connector 140929*9 Contacts Vert Male Connector 110305*Relay 12V / 2 Switch 1A 250V 110267*1sw 2pos Horizontal Slider Switch 100919*MC33078 Dual LN Operational Amplifier 100084*TL074 Quad J-Fet Operational Amplifier 100061*TL072 Dual J-Fet Operational Amplifier 100019*TL

19、071 LN J-Fet Operational Amplifier 090194*BC560 TO92 LN Pnp Transistor 090183*BC550 TO92 LN Npn Transistor 080901*VTL5C4 Analog Optoisolator 080743*3mm Wide Diffused Green Led 080734*Led 2.5x5mm Rect Diffused Red-Grn 080293*15V 1W 5% Zener Diode 080168*W02M 1.5A Rectifier Diodes Bridge 080156*1N4002

20、 1A 100V Rectifier Diode 080103*1N4148 100mA 75V Signal Diode 075820*4x100K 16mm Hor Rotary Alog Potentiometer 074570*5K 31steps Linear Potentiometer 070186*10K 20% Vertical Linear Trimmer 042730*115K 1/4W 1% Metalized Film Resistor 042665*33K2 1/4W 1% Metalized Film Resistor 042628*16K5 1/4W 1% Met

21、alized Film Resistor 042625*15K0 1/4W 1% Metalized Film Resistor 042605*10K0 1/4W 1% Metalized Film Resistor 042565*4K99 1/4W 1% Metalized Film Resistor 737095737095737095737095737095 * * * * * 600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (

22、PCB#319040)600W Power Amplifier Board (PCB#319040)600W Power Amplifier Board (PCB#319040) 090924*MJL21194 TO264 Npn Transistor 090923*MJL21193 TO264 Pnp Transistor 230530*1uH 10% 630ma Rf Coil 140917*2 Contacts Vert Male Connector 110316*Relay 24V / 1 Switch no 16A 250V 100061*TL072 Dual J-Fet Opera

23、tional Amplifier 100060*7815 +15V 1A Voltage Regulator 100049*7915 -15V 1A Voltage Regulator 090920*MJE802 TO126 Npn Darl Transistor 090201*2N5401 TO92 Pnp Transistor 090200*2N5550 TO92 Npn Transistor 090194*BC560 TO92 LN Pnp Transistor 090183*BC550 TO92 LN Npn Transistor 080282*13V 1W 5% Zener Diod

24、e 080245*7V5 1W 5% Zener Diode 080168*W02M 1.5A Rectifier Diodes Bridge 080158*1N4006 1A 800V Rectifier Diode 080156*1N4002 1A 100V Rectifier Diode 080103*1N4148 100mA 75V Signal Diode 070106*470E 20% Horizontal Linear Trimmer 042725*100K 1/4W 1% Metalized Film Resistor 042685*47K5 1/4W 1% Metalized

25、 Film Resistor 042565*4K99 1/4W 1% Metalized Film Resistor 042564*4K75 1/4W 1% Metalized Film Resistor 042557*4K32 1/4W 1% Metalized Film Resistor 042345*75E0 1/4W 1% Metalized Film Resistor 030715*1000u 6v3 20% Vert Electrolytic Capacitor 030526*2200u 35v 20% Snap-In Electrolytic Capacitor 140929*9

26、 Contacts Vert Male Connector 140068*3 Contacts Terminal Block 110120*Fuse Clip (US) 110119*Fuse Clip (EU) 090919*MJE15031 TO220 Pnp Transistor 090918*MJE15030 TO220 Npn Transistor 090917*MJE350 TO126 Pnp Transistor 090916*MJE340 TO126 Npn Transistor 090183*BC550 TO92 LN Npn Transistor 080820*Ptc 80

27、 PTH59F04BF222TS 727567*Fan Assembly 110363*24Vdc (80 x32cm) Fan 210215*Adhesive Rubber Foam 10 x1.9mm (Specify mt) 177603*Amplifier Board Support Wiring ConnectionsWiring ConnectionsWiring ConnectionsWiring ConnectionsWiring Connections 841180*9 Wires 12.5cm Length Crimp Terminal Cable 840803*6 Wir

28、es 12.5cm Length Flat Cable 840768*4 Wires 10cm Length Flat Cable Note: 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 o

29、f 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 Specifications K L A POWER (EIA RS-426A)Watts EIA550 HANDLI

30、NGWatts IHF600 DISTORTION(THD+N)0,02% INPUT IMPEDANCEKohms 30 balanced 15 unbalanced INPUT SENSITIVITYdB 0 (0,775 V) with LOW spin OFF -6 (0,387 V) with LOW spin ON POWER SUPPLY 230Vac +/-15% 50-60Hz - 115Vac +/-15% 50-60Hz SENSITIVITY (SPL 1W/1m)dB98 MAX SPL continousdB118 MAX SPL peakdB121 FREQUEN

31、CY RESPONSEHz (-10dB)40320 COMPONENTS 15 Woofer CONSTRUCTIONS Cabinet: birch plywood. Finish: Black scratch-resistant paint Metal Grille Polyurethane front panel CONTROLS Volume Control. SHIELD Limiter ON/OFF. CONNECTIONS Combo - 1 XLR-M POWERCON power connector DIMENSIONmm (LxAxP)542x656x537 WEIGHT

32、kg41,6 BIAS ADJUSTEMENTBIAS ADJUSTEMENTBIAS ADJUSTEMENTBIAS ADJUSTEMENTBIAS ADJUSTEMENT I 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 Oscilloscop

33、e with 10 x prober. - Digital Voltmeter (or Multimeter) - 8W 1000W Resistor - Temperature Meter Setup: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

34、./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 oscilloscope must be earth insulated.must be earth insulated.must be earth insulated.must be earth insul

35、ated.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 PROC

36、EDUREADJUSTMENT PROCEDUREADJUSTMENT PROCEDUREADJUSTMENT PROCEDURE 1) 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 level to minimum 4) Adjust the trimmer VR1 to read a voltage of 30.05m

37、V 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:

38、 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 R22 and across R74 resistor must not exceed 5mV) 3) Re-connect the cooling fan and the crossover instead of the 8W 1000W resistor.