Laney_CA600_Service_Manual电路图.pdf

CA600CA600 Power Amplifer Service Information Laney www.laney.co.uk RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 SystemDiagram CA Series Power Amplifiers D:RSTMISCCA Series Ampifers THD measurement.doc Created by R&D3 On 07/11/00Page 1/1 Traditionally, Class A and Class A-B amplifiers have dominated the amplifier marketplace. These purely analogue devices have low power efficiency and most integrated circuit Class A-B amplifiers fall short of true high-fidelity audio quality. Class D amplifiers however, solve the efficiency problem by using switching pulse-width modulation technology. However, this produces audio quality that is far inferior to class A or AB, so efficiency is gained at the expense of audio fidelity. The Holy Grail of amplification: High audio quality AND high power efficiency has long eluded the market. Enter the CA range of power amplifiers delivering audiophile performance and very high efficiency. If you have measured the output waveforms of CA amplifiers using traditional equipment and methods, you may have observed an unusual characteristic in the output waveform when the amplifier is driven close its maximum output. This characteristic appears to be a high frequency oscillation near the waveform peaks. In reality, this apparent oscillation is an audio quality enhancement characteristic of the CA amplifier. The apparent oscillations are well outside the audio bandwidth, and are a unique feature of the digital power processor. No Filtering on output As the input signal, to any conventional amplifier is increased, at some point the output of the amplifier will distort/clip i.e. Square off. This is bad news because the for a split second the loudspeaker is not moving at all but still dissipating potentially huge power levels, this is the main cause of (expensive) compression driver failure. When the CA power amplifier goes into this distortion region, it exhibits high frequency break-up of the peaks as shown above. This is actually the amplifier resetting the control processor overloads at a frequency far above the audible range. This is not instability or oscillation, nor does it degrade the performance of the amplifier in any way. In addition the CA series power amplifiers also have the ability to run almost rail-to-rail, and thus will not lose negative feedback. In other words, it will retain control of the load at all times. Measurement of THD%+N Unless your distortion analyser is designed to reject out of band noise when measuring THD (And very few are), the THD measurement actually reflects harmonic distortion plus any noise present up to the bandwidth of the analyser and so is actually a measurement of THD+N. Since the CA range of amplifiers have energy far outside the audible frequency range (As do inferior class D amplifiers), a test designed for linear amplifiers (such as class A, AB) will not yield valid results when applied to a CA amplifier. A sharp cut-off low-pass filter must be inserted between the amplifiers outputs and the test equipments inputs prior to making any distortion measurements. Some measurement equipment (Such as Audio Precision2) have high quality low pass filters which can be used to limit the test bandwidth. Using these filters (as shown below) you will achieve what looks like a high quality linear amplifier. Even though there appears to be lots going on outside the audio bandwidth, the CA amplifier is designed to be well within current and future EMC guidelines, and as such is quieter than most linear amplifiers. Output with 30Khz Low-pass filter CA600ECA600 EURO/UK 230V Page 1/6 10462CA600/1500 CARTONS1 10702SPECIAL MAINS LEAD1 10959CA SERIES MANUAL1 CA600ECA600 EURO/UK 230V Page 2/6 7908CA600 CHASSIS ASSY EURO/UK-1 -00104810M .25W RESISTOR1 -00202210000UF 100V CAPACITOR/SAMWHA2 -002204680NF 250V 22.9mm3 -0053193A FILTERED MAINS INLET1 -0053213A THERMAL RELEASE SWITCH1 -0055103MM SOLDER TAG1 -0055115MM SOLDER TAG10 -005558100mm TIE WRAP20 -005612M3*8 METAL SPACER2 -005632M3*20 PLASTIC SPACER HEX4 -005659SHORT BOARD SPACER 12.7MM4 -005666RED P402 KNOB2 -0091523*5mm PAN POZI4 -0091604mm HEX NUT19 -0091614mm INT. SHAKEPROOF26 -0091624*12mm PAN POZI2 -0091634*20mm PAN POZI6 -0091674*8 PAN POZI TAPTE4 -009171M5 INT SHAKEPROOF2 -0091735*12mm PAN POZI1 -0091815mm BRASS HEX NUT1 -009183WASHER 10MM O/D X 3 1/2MM ID2 -0091906 WAY END CONNECTOR4 -0091993 WAY IDC CONNECTOR8 -009200NO 6*3/8 FLANGE POZI18 -009204NO 4*1/4 PLASTITE4 -0092174mm NUTSERT18 -0092354 X 3/8 PAN POZI AB BLK POZI6 -52203235A BRIDGE RECTIFIER1 -530027DPST EQ MAINS SWITCH1 -540038EARTH WARNING LABEL1 -541004HC25/50 4.8 FASTON6 -5410531/4 LG RECEPTACLE17 -541071POZI LOCK NYLON BOOT16 -5820054*25 PAN POZI4 -5820074*10mm SMALL F/H8 -586002M8 * 60 ROOFING BOLT1 -5860238mm SHKPRF WASHER1 -588006POP RIVET (BLACK)6 -589020S/A SQUARE RUBBER FOOT20MMx8MM4 -58904150mm CAPACITOR CLAMP2 -5P-50036MX500 CAP STRAP-1 -8P-5066CA600 SUB FACIA DWG 3137-1 -8P-5064CA1500/600 TRIM FACIA DWG NO 3126-1 -8P-5065CA1500/600 CHASSIS DWG 3104-1 -8P-9250CA1500/600 REAR DWG 3105-1 -8P-5067CA1500/600C CHASSIS PARTITION DWG-1 -8P-5069CA1500/600 LID DWG 3145-1 -8T-6144CA600 MAINS TX 115/230-1 CA600ECA600 EURO/UK 230V Page 3/6 -007909CA SERIES INPUT PCB 9339 ASSY-1 -00107122K 1206 1% RESISTOR2 -00107239K 1206 1% RESISTOR2 -001300ORO SHORTING LINK17 -0013271K 5% RESISTOR2 -001920ZERO OHM RESISTOR2 -00192356KSM 1206 1% RESISTOR2 -00192410KSM 1206 1% RESISTOR12 -00201310UF 50V CAPACITOR6 -002419100NF 63V 5mm6 -00260247PF 50V 10% COG2 -002605470PF 50V 10% COG2 -0030343mm LED YELLOW2 -0030415MM FERRITE BEAD4 -003500BAS16 DIODE12 -003509MC33078 IC3 -0039017815 IC VOLTREGULATOR1 -0039027915 IC VOLTREGULATOR1 -00401910K HORIZ PRESET2 -005003STEREO JACK SOCKET2 -005030HEATSINK TV52 -0050366 WAY LOCKING HEADER2 -005054XLR SOCKET FEMALE2 -0050633 WAY LOCKING HEADER4 -0050653 WAY NON LOCKING2 -005331LEDS-02-12-26 SPACER1 -0056102 POLE 2 WAY (MX)1 -0091993 WAY IDC CONNECTOR1 -009339PCB ISSUE 21 -5300234P 3W SLIDE SWITCH1 -543508SHORTING LINK (IDC)2 CA600ECA600 EURO/UK 230V Page 4/6 -007910CA600 OUTPUT ASSY PCB 9333-1 -0010685R6 1W 5% WW RESISTOR4 -001069OR01 2W5 5% WIREWOUND RESISTOR4 -00107333R 2W5 5% RESISTOR2 -001300ORO SHORTING LINK2 -00130247R 5% RESISTOR1 -0013052K2 5% RESISTOR1 -00130610K 5% RESISTOR11 -0013091M 5% RESISTOR4 -0013124K7 5% RESISTOR4 -00131547K 5% RESISTOR3 -00131622K 5% RESISTOR2 -0013186K8 5% RESISTOR1 -0013271K 5% RESISTOR2 -00140010K 1W RESISTOR1 -0015111K 2.5W RESISTOR2 -001705680R 5W RESISTOR1 -001920ZERO OHM RESISTOR1 -00200447UF 50V RADIAL4 -0020091000UF 25V RADIAL3 -00201310UF 50V CAPACITOR1 -002014100UF 35V RADIAL1 -0020251UF 63V RADIAL3 -002029220UF 25V CAPACITOR1 -002035100N 100V 5MM BOX POLY6 -002036100UF 100V RADIAL CAP2 -002039220N 250V POLYPROPYLENE CAP2 -002041100N 250V 5MM POLYESTER CAPACITOR2 -002410100NF 400V 15MM2 -002419100NF 63V 5mm8 -00281847PF 500V CERAMIC2 -0030001N4007 DIODE6 -0030073V9 .5W ZENER DIODE2 -00301415V 1.3W ZENER1 -0030171.5A 200V BRIDGE1 -00301810V .5W ZENER DIODE1 -0030223mm GREEN LED2 -0030415MM FERRITE BEAD5 -003042BYW100-200-FAST RECOVERY DIODE4 -003411MPSA42/43 TRANSISTOR2 -003423TA0104A TRIPATH DIGITAL AMPLIFIER2 -003424LM7812 12V REGULATOR1 -003425STW34NB20 MOSFET4 -003500BAS16 DIODE7 -003503BC847B TRANSISTOR3 -003504BC857B TRANSISTOR1 -00350834072 IC (SMD TL072)1 -003610TIP31C TRANSISTOR2 -0039017815 IC VOLTREGULATOR1 -0039027915 IC VOLTREGULATOR1 -0039057805 IC1 -00401910K HORIZ PRESET2 -005030HEATSINK TV53 -0050366 WAY LOCKING HEADER1 -0050381/4 SPADE TERMINAL7 -0050633 WAY LOCKING HEADER3 -005076290MM TIE WRAP1 -0051030.9A POLY SWITCH/MF-R0903 -0053168W PCB SOCKET2 -00531711.3UH 20A INDUCTOR2 -00531812W PCB SOCKET2 -005322ALUMINIUM OXIDE FET WASHER4 CA600ECA600 EURO/UK 230V Page 5/6 -005558100mm TIE WRAP2 -00560930A RELAY2 -0056864.8MM TERMINAL SPADE6 -0091503mm HEX NUT7 -0091513mm INT SHAKEPROOF7 -009333CA/B1 DIGITAL OUTPUT PCB1 -543508SHORTING LINK (IDC)2 -5810183*20mm PAN POZI7 -588006POP RIVET (BLACK)3 -588058M3*10mm HEX TAPPED5 -8P-9243CA/B1 OUTPUT TRAY DWG NO 3130-1 CA600ECA600 EURO/UK 230V Page 6/6 -007911CA600 VU/SS/O/P ASSY-1 -0010031K .25W RESISTOR1 -001300ORO SHORTING LINK1 -0013052K2 5% RESISTOR2 -00130610K 5% RESISTOR3 -001311470R 5% RESISTOR2 -0013271K 5% RESISTOR4 -00201310UF 50V CAPACITOR2 -00240122NF 400V 10MM2 -002402220NF 250V 15MM DIPPED POLYSTER2 -0030115V1 .5W ZENER DIODE1 -0030223mm GREEN LED7 -003031SURGE GUARD SCK20-10-8A1 -0030333mm LED RED4 -003503BC847B TRANSISTOR1 -003805LB1413 BARGRAPH DRIVER2 -00411310K VERTICAL PRESET2 -004110B10K 27.5MM POT2 -0050723 WAY 90 DEGREE LOCKING HEADER4 -0050738 WAY 90 DEGREE LOCKING HEADER1 -005657LED SPACER 12.7mm2 -009335PCB ISSUE 31 -543508SHORTING LINK (IDC)2 -57101410 TURN CHOKE2 CA600USCA600 115V Page 1/4 10462CA600/1500 CARTONS1 10702SPECIAL MAINS LEAD1 10959CA SERIES MANUAL1 7917CA600 CHASSIS ASSY 115V-1 CA600USCA600 115V Page 2/4 7917CA600 CHASSIS ASSY 115V-1 -00104810M .25W RESISTOR1 -00202210000UF 100V CAPACITOR/SAMWHA2 -002204680NF 250V 22.9mm3 -0053236 AMP FILTERED MAINS INLET1 -0053245A THERMAL RELEASE SWITCH1 -0055103MM SOLDER TAG1 -0055115MM SOLDER TAG10 -005558100mm TIE WRAP20 -005612M3*8 METAL SPACER2 -005632M3*20 PLASTIC SPACER HEX4 -005659SHORT BOARD SPACER 12.7MM4 -005666RED P402 KNOB2 -0091523*5mm PAN POZI4 -0091604mm HEX NUT19 -0091614mm INT. SHAKEPROOF26 -0091624*12mm PAN POZI2 -0091634*20mm PAN POZI6 -0091674*8 PAN POZI TAPTE4 -009171M5 INT SHAKEPROOF2 -0091735*12mm PAN POZI1 -0091815mm BRASS HEX NUT1 -009183WASHER 10MM O/D X 3 1/2MM ID2 -0091906 WAY END CONNECTOR4 -0091993 WAY IDC CONNECTOR8 -009200NO 6*3/8 FLANGE POZI18 -009204NO 4*1/4 PLASTITE4 -0092174mm NUTSERT18 -0092354 X 3/8 PAN POZI AB BLK POZI6 -52203235A BRIDGE RECTIFIER1 -530027DPST EQ MAINS SWITCH1 -540038EARTH WARNING LABEL1 -541004HC25/50 4.8 FASTON6 -5410531/4 LG RECEPTACLE17 -541071POZI LOCK NYLON BOOT16 -5820054*25 PAN POZI4 -5820074*10mm SMALL F/H8 -586002M8 * 60 ROOFING BOLT1 -5860238mm SHKPRF WASHER1 -588006POP RIVET (BLACK)6 -589020S/A SQUARE RUBBER FOOT20MMx8MM4 -58904150mm CAPACITOR CLAMP2 -5P-50036MX500 CAP STRAP-1 -8P-5066CA600 SUB FACIA DWG 3137-1 -8P-5064CA1500/600 TRIM FACIA DWG NO 3126-1 -8P-5065CA1500/600 CHASSIS DWG 3104-1 -8P-9250CA1500/600 REAR DWG 3105-1 -8P-5067CA1500/600C CHASSIS PARTITION -1 -8P-5069CA1500/600 LID DWG 3145-1 -8T-6145CA600 115V MAINS TX-1 CA600USCA600 115V Page 3/4 -007909CA SERIES INPUT PCB 9339 ASSY-1 -00107122K 1206 1% RESISTOR2 -00107239K 1206 1% RESISTOR2 -001300ORO SHORTING LINK17 -0013271K 5% RESISTOR2 -001920ZERO OHM RESISTOR2 -00192356KSM 1206 1% RESISTOR2 -00192410KSM 1206 1% RESISTOR12 -00201310UF 50V CAPACITOR6 -002419100NF 63V 5mm6 -00260247PF 50V 10% COG2 -002605470PF 50V 10% COG2 -0030343mm LED YELLOW2 -0030415MM FERRITE BEAD4 -003500BAS16 DIODE12 -003509MC33078 IC3 -0039017815 IC VOLTREGULATOR1 -0039027915 IC VOLTREGULATOR1 -00401910K HORIZ PRESET2 -005003STEREO JACK SOCKET2 -005030HEATSINK TV52 -0050366 WAY LOCKING HEADER2 -005054XLR SOCKET FEMALE2 -0050633 WAY LOCKING HEADER4 -0050653 WAY NON LOCKING2 -005331LEDS-02-12-26 SPACER1 -0056102 POLE 2 WAY (MX)1 -0091993 WAY IDC CONNECTOR1 -009339PCB ISSUE 21 -5300234P 3W SLIDE SWITCH1 -543508SHORTING LINK (IDC)2 CA600USCA600 115V Page 4/4 -007911CA600 VU/SS/O/P ASSY-1 -0010031K .25W RESISTOR1 -001300ORO SHORTING LINK1 -0013052K2 5% RESISTOR2 -00130610K 5% RESISTOR3 -001311470R 5% RESISTOR2 -0013271K 5% RESISTOR4 -00201310UF 50V CAPACITOR2 -00240122NF 400V 10MM2 -002402220NF 250V 15MM DIPPED POLYSTER2 -0030115V1 .5W ZENER DIODE1 -0030223mm GREEN LED7 -003031SURGE GUARD SCK20-10-8A1 -0030333mm LED RED4 -003503BC847B TRANSISTOR1 -003805LB1413 BARGRAPH DRIVER2 -00411310K VERTICAL PRESET2 -004110B10K 27.5MM POT2 -0050723 WAY 90 DEGREE LOCKING HEADER4 -0050738 WAY 90 DEGREE LOCKING HEADER1 -005657LED SPACER 12.7mm2 -009335PCB ISSUE 31 -543508SHORTING LINK (IDC)2 -57101410 TURN CHOKE2