LEM-TM15_2-spk-sm 电路图 维修手册.pdf

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1、1 r CODE : 277322 Index & Warnings Soldering point. Male connector. Female connector. M/F faston connector. Test point. Supply voltage. Logic supply ground. Analog supply ground. Signal ground. Chassis ground. Flag joined with one or more flags with the same signal name inscribed. Notice Service mus

2、t be carried out by qualified personnel only. Any tampering carried out by unqualified personnel during the guarantee period will forfeit the right to guarantee. For a correct operation of the instrument, after having switched off, be careful to wait at least 3 seconds before switching on again. To

3、improve the devices specifications, the schematic diagrams may be subject to change without prior notice. Schematic Notes All components marked by this symbol have special safety characteristics, when replacing any of these components use only manufacturers specified parts. The (?) micro symbol of c

4、apacitance value is substituted by U. The () omega symbol of resistance value is substituted by E. The electrolytic capacitors are 25Vdc rated voltage unless otherwise specified. All resistors are 1/4W unless otherwise specified. All switches shown in the OFF position. All DC voltages measured to gr

5、ound with a voltmeter 20KOhm/V. ATTENTION Observe precautions when handling electrostatic sensitive devices SERVICE MANUAL Schematic Diagrams GENERALMUSIC S.p.a. Sales Division:47842 S.Giovanni in Marignano (RN) ITALY - Via delle Rose, 12 - tel. 0541/957404 - fax0541/957404 - RadioFans.CN 收音机爱 好者资料库

6、 r 2 RadioFans.CN 收音机爱 好者资料库 3 r + - - + RadioFans.CN 收音机爱 好者资料库 r 4 5 r r 6 Spare Parts 1887074XLR MALE-FEMALE SIGNAL CABLE (mt. 1.5) 2768030DISPLAY & SETTING BOARD 3768126SIGNAL INPUTS CONTROLS & MIDI INTERFACE BOARD 4768043POWER AMPLIFIER BOARD 5768042POWER SUPPLY BOARD 6768128CONVY PROCESSOR BOA

7、RD 7767987MAINS FILTER BOARD (EU) 7768002MAINS FILTER BOARD (US) 8667613CONTROLS PANEL 9667610METAL GRID 10659027CYL. KNOB WHITE CAP 11717054WOODEN CABINET 12347287PLASTIC HANDLE 13347286HANDLE SET 14347187RUBBER HANDLE 15237064TRANSFORMER (EU) 15237065TRANSFORMER (US) 162290302 COMPRESSION DRIVER T

8、WEETER 17347283COMPRESSION DRIVER HORN 1822703815 SPEAKER 19177476AMPLIFIER HEAT SINK 20177325STAND ADAPTOR 21150591DISPLAY RED GLASS 22141202XLR MALE SOCKET 23141184XLR FEMALE SOCKET 24140526GRAY BUTTON 25140212DIN SOCKET 26130297MAINS CORD (EU) 26130283MAINS CORD (US) 27120319WL 4x15 MAINS CORD SC

9、REW 28120125M5x35 MAINS CORD SCREW 29120111M6x25 MAINS CORD SCREW 30120108M5x30 MAINS CORD SCREW 31120099M4x25 MAINS CORD SCREW 32120098M4x20 MAINS CORD SCREW 33110614MAINS INLET (EU)(US) 341102972 POLES 2 POS. SLIDE SWITCH 35110291MAIN SWITCH (EU)(US) 36180637ADHESIVE GENERALMUSIC-LEM BRAND 3717747

10、4DRIVER HOLDER Inputs Controls Panel 7 r BIAS ADJUSTMENT Instruments, materials and tools: - Audio Generator - Dual Trace Oscilloscope - Digital Voltmeter (or Multimeter) - 4 500W and 8 100W Resistors - Temperature Meter Setup: - Connect the Audio Generator to the input and set its output at 2KHz si

11、nusoidal signal. - Insert the temperature sensor through the interstize between the heatsink and R93 (PTC). - Connect the 4 500W resistor to the amplifier output instead of the woofer speaker and 8 100W instead of tweeter speaker. - Connect the oscilloscope probes (setting 20V/div.,1ms/div.) on the

12、loads. - Insert the voltmeter terminals on R107. ADJUSTMENT PROCEDURE 1) Turn on the amplifier, pressing UP DOWN and MIDI simultaneously, check that the display shows C. 2) Set the input signal to 0dB (0.775Vrms). 3) When the temperature has reaches about 45C (109F) set the signal input to minimum (

13、0 or -). 4) Adjust the trimmer R111 to read a voltage of 6mV 0.1 on the multimeter. 5) Check that the voltage across the R108 resistor has the same value. 6) At the same temperature condition, adjust the VR1 trimmer to read 2.2mV 0.1 at R24 resistor. 7) Check that the voltage on the R25 resitor has

14、the same value. Veryfing: 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 R111 or VR1 position until distortion disappears. (Note: the voltage value ac

15、ross the R107 or R108 resistor must not exceed 10mV and the R24 or R25 resistor must not exceed 4mV). LIMITER ADJUSTEMENT 1) Increase the input level to 10dB, adjust the trimmer VR1 until clipping distortion disappears. 2) Verify tha the led change colour from green to red. 3) Re-connect the speaker

16、s instead of the 4 and 8 resistors. TOUR MASTER 15,2 ACTIVE - Technical Specification SPEA KER SPECIFICA TIONS COMPONENTS High 2 driver with controlled directiv ity horn Low15 low frequency speaker HIGH section POWER HANDLING W continuous75 (EIA RS-426A) W peak240 LOW section POWER HANDLING W contin

17、uous800 (EIA RS-426A) W peak2400 IMPEDANCE (nominal) Highohm8 Low4 CONSTRUCTION Cabinet: birch playwood Finish: Black scratch-resistant paint Protection grille: metal grille WEIGHT kg - lbs.48,5 - 106,8 DIMENSIONS mm - in.470 x790 x465 (LxAxP) - 185x311x183(WxHxD) PROCESSOR SPECIFICA TIONS INPUT Sen

18、sitivitydB0 (0.775Vrms) ImpedanceKohm30 (balanced) - 15 (unbalanced) A/D converter bit18 D/A converter bit18 Dynamic range dB105 Sampling rate KHz48 CROSSOVER FrequencyHz1350 SlopedB/oct.24 HIGH section POWER AMPLIFIER W continuous150 LOW section POWER AMPLIFIER W continuous650 AMPLIFIERS DISTORTION

19、 THD +Noise0,02% CONTROLS VOLUME control UP & DOWN selector buttons MIDI button Earth Lift DISPLAY 2-digit display SIGN/COMP LED CONNECTORS 1 XLR-F +1 XLR-M (input + link) MIDI in & MIDI THRU POWER SUPPLY 230V 15% 50/60Hz - 115V 15% 50/60Hz SYSTEM SPECIFICATIONS FREQUENCY RESPONSE Hz50 20000 (-10dB)

20、 SENSITIVITY SPL 1W/1m dB98 MAX SPL continuous127 DISPERSION ANGLE horizontal 60 (10) vertical40 (7) DIRECTIVITY Factor (Q) 12 DIRECTIVITY Index Di dB11 (+2.8 , -4) Note:the system specifications have been calculated using PRESET n.1 FLAT r 8 Notes: Each spare part is single quantity unless otherwis

21、e specified Asterisk prefix explanation: Omitted= First level spare part. One asterisk= Second level, part of previous listed first level part. Two asterisks= Third level, part of previous listed second level part. Three asterisk=. Any request for not above mentioned part must encompass specific des

22、cription including: 1) Model name, 2) Section, 3) Module code, 4) Reference name, 5) Quantity number. SPARE PARTS LIST ACCESSORIES 887074XLR Female-Male Signal Cable (1.5mt) 277310Owners Manual ASSEMBLY 667613Controls Panel 659027Cyl. Knob White Cap 237064Transformer (230V) 237065Transformer (115V)

23、150591Display Red Glass 110614Mains Socket 110291Power Switch 110037T6.3A Fuse 6.3x32mm (US) 110035T2.5A Fuse 6.3x32mm (US) 110034T800mA Fuse 6.3x32mm (US) 110022T8A Fuse 6.3x32mm (US) 110029T4A Fuse 5x20mm (EU) 110023T8A Fuse 5x20mm (EU) 110018T6.3A Fuse 5x20mm (EU) 110015T800mA Fuse 5x20mm (EU) 11

24、0014T2.5A Fuse 5x20mm (EU) 667506Left Side Bar 717054Wooden Cabinet 667610Metal Grid 347287Plastic Handle 347286Plastic Set 3472832 Comprission Driver Horn 347187Plastic Grip 2290302 Compression Driver Tweeter 22703815 Speaker 177474Driver Holder 177325Stand Adapter 130297Mains Cord (EU Version) 130

25、283Mains Cord (US Version) CONVY Processor Board 758128CONVY Processor Board (PCB#313020) 230569*FL5R200PNT EMI Coil For Signal 141059*Con V M 9 C Mini Mate Burndy 141015*Con V F 14c P=1.27 Mmatch Amp 141013*Con V F 10c P=1.27 Mmatch Amp 141010*4 Contacts Vert Female Connector 100943*MC33079 Quad Ln

26、 Op Amp 100919*MC33078 Dual LN J-Fet Operational Amplifier 100737*ADMOD79 2ch Ad Delta Modulator 100643*AD1865N Dual 18bit Dac 100642*TS93C46 1Kbit Eeprom Memory 100612*74HC374 Octal D-Type Flip-Flop 100061*TL072 Dual J-Fet Operational Amplifier 100059*7805 +5V 1A Voltage Regulator 100058*7905 -5V 1

27、A Voltage Regulator 080103*1N4148 100mA 75V Signal Diode 050494*Resistor Array 10K X5 1/8w 5% 050492*10Kx8 1/8w 5% Resistor Array 010722*24.576MHz Quartz Resonator 010720*12MHz Ceramic Resonator With Capacitors 557026*AT89C55-12JC Programmed CPU 105001*CONVY Dsp Convolver Power Supply Board 768042*P

28、ower Supply Board (PCB#317191) 141060*Con V M 12c Mini Mate Burndy 141013*Con V F 10c P=1.27 Mmatch Amp 140081*H 2c P=10 Terminal Block 140069*H 3c P=10mm Terminal Block 100060*7815 +15V 1A Voltage Regulator 100059*7805 +5V 1A Voltage Regulator 100049*7915 -15v 1a Voltage Regulator 080606*GBU8D 8A R

29、ectifier Diodes Bridge 080168*W02M 1.5A Rectifier Diodes Bridge 030882*10000uF 50V Snap-In Electrolytic Capacitor 030881*10000uF 50V Snap-In Electrolytic Capacitor 030866*4700uF 100V Snap-In Electrolytic Capacitor 030858*4700uF 25V 20% Vert Electrolytic Capacitor 030560*4700uF 80V 20% Snap-In Electr

30、olytic Capacitor Signal Input Controls & MIDI Interface Board 768126Signal Input, Controls & MIDI Interface Board (PCB#313019) 757942*Photores Coupler 141202*Hor. Male XLR Socket (M21bc Nuova Asme) 141184*Hor. Male XLR Socket (NC3FPRH Neutrik) 141064*9 Contacts Hor. Male Connector 141010*4 Contacts

31、Vert Female Connector 140212*Horizontal Female 5 Poles Din Socket 100602*74HC04 Hex Inverter 100061*TL072 Dual J-Fet Operational Amplifier 100035*6N138 Optocoupler 090194*BC560 TO92 LN Pnp Transistor 090183*BC550 To92 Ln Npn Transistor 080734*Led 2.5x5mm Rect Diff Red-Grn LED 080245*7V5 1W 5% Zener

32、Diode 080103*1N4148 100mA 75V Signal Diode 074570*5K lin. 31 clicks Potentiometer 070125*1K 20% Vertical Linear Trimmer 140526*Gray Button Display & Setting Board 768030*Display & Setting Board (PCB#319046) 141015*Con V F 14c P=1.27 Mmatch Amp 140526*Microswitch 100V 100ma 0.8mm 080717*HDN1105 7 Seg

33、ments Display Mains Filter Board 767987*Mains Filter Board (Pcb#315016) (EU) 768002*Mains Filter Board (Pcb#315016) (US) 230565*2.5mH 250V 3A AC Line Filter 140010*3 Contacts P=10 Vert Terminal Block 110113*Fuse Clip 5x20mm 6A max (EU) 110114*Fuse Clip 6.3x32mm 10A Max (US) 020493*100n 250Vac MKP EM

34、I Capacitor “Siemens” 010719*2n2 250Vac 7A 20% AC Line “Y” Filter “Murata” Power Amplifier Assembly 727524Power Amplifier Assenbly 768043*Power Amplifier Board (PCB#319044) 141059*9 Contacts Vert. Male Connector 141058*6 Contacts Vert. Male Connector 110316*Relay 24V / 1 Switch no 16A 250V 110307*Re

35、lay 24V / 2 Switch 5A 250V 100084*TL074 Quad J-Fet Operational Amplifier 100061*TL072 Dual J-Fet Operational Amplifier 090920*Mje803 TO126 Npn Darl Transistor 090917*MJE350 TO126 Pnp Transistor 090916*MJE340 TO126 Npn Transistor 090201*2N5401 TO92 Pnp Transistor 090200*2N5550 TO92 Npn Transistor 090

36、924*MJL21194 NPN Transistor 090923*MJL21193 PNP Transistor 090920*MJE802P PNP Transistor 090919*MJE15031 PNP Transistor 090918*MJE15030 NPN Transistor 090917*MJE350 PNP Transistor 090916*MJE340 NPN Transistor 090863*TIP36C PNP Transistor 090862*TIP35C NPN Transistor 080282*13V 1W 5% Zener Diode 0802

37、61*10V1W 5% Zener Diode 080245*7V5 1W 5% Zener Diode 080241*5V6 1W 5% Zener Diode 080171*FE6B 6A 100V Fast Recovery Diode 080156*1N4002 1A 100V Rectifier Diode 080103*1N4148 100mA 75V Signal Diode 070106*470E 20% Horizontal Linear Trimmer 070082*220E 20% Horizontal Linear Trimmer 080819*PTC 70 Pth59f04bg222ts 080607*KBPC25 25A 200V Bridge Rectifier Diode 080606*GBU8D 8A Rectifier Diodes Bridge