Yamaha-CP2000-pwr-sm 维修电路原理图.pdf

SERVICE MANUALPA 011553HAMAMATSU, JAPAN1.222K-496 Printed in Japan 00.11CONTENTSSPECIFICATIONS 3PANEL LAYOUT 4CIRCUIT BOARD LAYOUT 5WIRING 6DIMENTIONS 7BLOCK DIAGRAM 8DISASSEMBLY PROCEDURE 9IC BLOCK DIAGRAM 11CIRCUIT BOARDS 12INSPECTIONS 17PARTS LISTOVERALL CIRCUIT DIAGRAMPOWER AMPLIFIERThis document is printed on chlorine free (ECF) paper with soy ink.RadioFans.CN 收音机爱 好者资料库CP20002WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (whereapplicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possiblyother entities) to cause cancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASONWHAT SO EVER!Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyesto solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handlingfood.IMPORTANT NOTICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed thatbasic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood bythe users, and have therefore not been restated.WARNING:Failure to follow appropriate service and safety procedures when servicing this product may result in personalinjury, destruction of expensive components and failure of the product to perform as specified. For thesereasons, we advise all Yamaha product owners that all service required should be performed by an authorizedYamaha Retailer or the appointed service representative.IMPORTANT:This presentation or sale of this manual to any individual or firm does not constitute authorization, certification,recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, andservice departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable andchanges in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist,please contact the distributors Service Division.WARNING:Static discharges can destroy expensive components. Discharge any static electricity your body may haveaccumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus).IMPORTANT:Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to theunit.WARNINGComponents having special characteristics are marked and must be replaced with parts having specification equal to thoseoriginally installed.IMPORTANT NOTICE FOR THE UNITED KINGDOMConnecting the Plug and CordIMPORTANT.The wires in this main lead are coloured inaccordance with the following code:BLUE:NEUTRALBROWN: LIVEAs the colours of the wires in the main lead of this apparatus may notcorrespond with the coloured markings identifying the terminals inyour plug, proceed as follows:The BLUE wire must be connected to the terminal that is marked withthe letter N (or coloured BLACK).The BROWN wire must be connected to the terminal that is markedwith the letter L (or coloured RED).Be certain that neither core is connected to the earth terminal of thethree pin plug.RadioFans.CN 收音机爱 好者资料库SPECIFICATIONSCP20003Power Output Level8 /STEREO1 kHz, THD+N=1 %4 /STEREO8 /BRIDGE1 kHz2 /STEREO20 ms, non-clip4 /BRIDGEPower BandwidthTHD+N=0.2 % (half power)Total Harmonic Distortion (THD+N)48 /STEREO20 Hz20 kHz (half power)8 /BRIDGEIntermodulation Distortion48 /STEREO60 Hz:7 kHz, 4:1, half power8 /BRIDGEFrequency Response8 , Po=1WChannel separationHalf power, RL=8 LEVEL=max., input 600 shuntResidual NoiseLEVEL=min., 12.7 kHz LPF, IHF-A networkS/N Ratio12.7 kHz LPFDamping FactorRL=8 , 1 kHzSensitivityLEVEL=max., rated power into 8 Voltage GainLEVEL=max.Input ImpedanceFront panelControlsRear panelInputConnectorsOutputPOWERPROTECTIONTEMPIndicatorsCLIPSIGNALProtection CircuitFan CircuitLimiter CircuitPower requirementsIdle Power Consumption1/8 Power Consumption (4 )Maximum Power Consumption (4 )Dimensions (W x H x D)WeightAC Power cord length450 W + 450 W650 W + 650 W1300 W1000 W + 1000 W2000 W10 Hz40 kHz0.1%0.1%0 dB, +0.5 dB, -1 dB f=20 Hz50 kHz70 dB, 1 kHz -70 dB104 dB200+4 dB33.8 dB30 k (balanced), 15 k (unbalanced)POWER switch (push on/push off)LEVEL attenuator (31 position) x2Mode switch (STEREO/BRIDGE/PARALLEL)YAMAHA SPEAKER PROCESSING switch (ON/OFF)XLR-3-31 type (balanced) L+R1/4 phone jack (balanced) L+R1/4 phone jack L+R5-way binding post x1x1 (green)x1 (red)x1 (red) heatsink temp 85 Cx2 (red)x2 (green) output voltage 2 Vx2 (yellow) output voltage 20 VPOWER switch on/off muteDC detectionTEMP (heatsink temp 90 C)PC limiter: RL 1 Stoplow speed (50 C)variablehigh Speed (70 C)Comp: THD0.5 %U.S.A. & Canada 120 V AC, 60 HzEurope 230 V AC, 50 HzAustralia 240 V AC, 50 Hz30 W400 W2000 W480 x 88 x 416 mm (18.9 x 3.46 x 16.4 inches)14 kg (30.9 lbs)2.3 m* 0 dB=0.775 V rms, half power = 1/2 output level.1891012112345671POWER switch2POWER indicator3PROTECTION indicator4TEMP indicator5Level controls6CLIP indicators7LEVEL indicators8INPUTs9Mode switch10YAMAHA SPEAKER PROCESSING switch11SPEAKERS connectors12GND terminalCP20004PANEL LAYOUTFront PanelRear PanelCIRCUIT BOARD LAYOUTCP200057080CN615CN303CN305 CN304 CN302CN616CN606CN607CN608CN612CN610CN609CN611CN614CN313CN603CN604CN605CN601 CN602CN301CN102CN105CN106CN101CN103CN104CN306CN617AC 4/6INPAAC 6/6AC 5/6AC 1/6AC 2/6AC 3/6Power transformerFront panelFanAC 4/6-CN615IN-CN3037P 100mmConnector AssemblyPart No.MF107100LocationDestinationRemarksAC 6/6-CN617IN-CN3059P 120mmMF10912070803NC2-V6170201123U, V, TH, W, BABRWHBLBEBEBRREBEBR Wire Colors1232to Rear panelAC cordAC 4/6INPAAC 6/6AC 5/6AC 1/6AC 2/6AC 3/6FANKEC-92573POWERTRANSFORMERPOWERswitch3CP20006WIRINGDIMENTIONSCP2000788480410416Unit: mmKEC-925721CHANNEL L(BRIDGE)(PARALLEL)CHANNEL RINPUTJK301JK303123231JK302JK3041232576+-31BAIC301POWERLD602POWER CIRCUITAC CordPOWER SWSW601312+-BAIC30113SW302IC30213IC303VR602VR601SW301ONOFFCHANNELLATTYAMAHASPEAKERPROCESSINGSW302ONOFFINVCLIPLD604LD605LD606JK601SP601JK602LD608LD609LD601SIGNALSIGNALLD603CLIPLD607CHANNELRATTPARALLELBRIDGESTEREOLimiterLch Power AmpLimiterAC 4/6AC 3/6, 5/6, 6/6AC 1/6AC 2/6,CN615IC30276CN303INCN302CN614+BE-B+24E-24Rch Power AmpTemperatureSensor(Heat Sink)ProtectionCircuitCN304CN616PROTECTIONTEMPPAPAW607CN105RY101W609CN106RY102SPEAKERSCHANNEL LL+R BRIDGECHANNEL RFANPower transformerCP20008BLOCK DIAGRAM(Fig. 1)(Fig. 2)(Fig. 3)(Fig. 4)420420420420420: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)290: Bonding Tapping Screw-B 3.0X8 MFZN2BL (VN413300)300: Bind Head Tapping Screw-B 3.0X12 MFZN2BL (VQ074600)320: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)103: Bind Head Tapping Screw-B 4.0X8 MFZN2BL (EG340190)140: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)80A: Bind Head Screw A4.0X8 MFZN2BL (VP156800)120: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)160: Bonding Tapping Screw-B 4.0X8 MFZN2BL (VR779900)180: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)Top cover180160INAC 3/6AC 2/6290A320300 320AB290BSpeaker terminal coverBAC 3/680A120DB angleDB angle140103CTransformer holderPA unitPower transformerDISASSEMBLY PROCEDURECP200091.Top Cover(time required: about 3 minutes)1-1Remove the nine (9) screws marked 420. The top covercan then be removed. (Fig. 1)2.IN Circuit Board(time required: about 8 minutes)2-1Remove the top cover. (See procedure 1.)2-2Remove the six (6) screws marked 180, the four (4) screwsmarked 290A and the two (2) hexagonal nuts marked A.The IN circuit board can then be removed. (Fig. 2, Fig. 3)3.AC3/6 Circuit Board(time required: about 10 minutes)3-1Remove the top cover. (See procedure 1.)3-2Remove the two (2) screws marked 320. The speakerterminal cover can then be removed. (Fig. 3)3-3Remove the screw marked 290B, the two (2) screwsmarked 300 and the two (2) hexagonal nuts marked B.The AC3/6 circuit board can then be removed. (Fig. 3)4.AC2/6 Circuit Board(time required: about 15 minutes)4-1Remove the top cover. (See procedure 1.)4-2Remove the AC3/6 circuit board. (See procedure 3.)4-3Remove the screw marked 80A, the three (3) screwsmarked 120 and the two (2) screws marked 140. TheAC2/6 circuit board and the DB angle can then be removed.(Fig. 2, Fig. 4)5.Power Transformer(time required: about 8 minutes)5-1Remove the top cover. (See procedure 1.)5-2Remove the two (2) screws marked 103 and thehexagonal bolt marked C. The transformer holder andthe power transformer can then be removed. (Fig. 2, Fig. 4)250(Fig. 7)250Front panel250: Oval Head Screw 4.0X8 MFZN2BL (VS153600)8.Front Panel(time required: about 5 minutes)8-1Remove the top cover. (See procedure 1.)8-2Remove the six (6) screws marked 250. The front panelcan then be removed. (Fig. 7)9.AC1/6, AC4/6, AC5/6 and AC6/6 Circuit Board(time required: about 20 minutes)9-1Remove the top cover. (See procedure 1.)9-2Remove the front panel (See procedure 8.)9-3AC1/6 Circuit Board:Pull out the power switch knob. (Fig. 6)Remove the two (2) screws marked 60. The AC1/6 circuitboard can then be removed. (Fig. 6)9-4AC4/6 Circuit Board:Pull out the attenuation knobs. (Fig. 6)Remove the two (2) hexagonal nuts marked D. The AC4/6circuit board can then be removed. (Fig. 6)9-5AC5/6 Circuit Board:Remove the screw marked 100A. The AC5/6 circuit boardcan then be removed. (Fig. 6)9-6AC6/6 Circuit Board:Remove the screw marked 100B. The AC6/6 circuit boardcan then be removed. (Fig. 6) PA Unit80B80B80B80B80B80B(Fig. 5)Transistor holder (L)Transistor holder (R)40PAPA40: Bind Head Screw SP 3.0X8 MFZN2BL (EG330290)80B: Bind Head Tapping Screw-B 3.0X12 MFZN2BL (VQ074600)(Fig. 6)50: Bind Head Screw 4.0X8 MFZN2BL (EG340360)60: Bind Head Screw 3.0X8 MFZN2BL (VB659000)100: Bind Head Tapping Screw-B 3.0X8 MFZN2BL (EP600190)60 x 2D50FanAC 1/6AC 4/6Power switchknobAttenuation knobAC 5/6AC 6/6100A100BCP2000106.PA Unit & PA Circuit Board(time required: about 15 minutes)6-1Remove the top cover. (See procedure 1.)6-2Remove the six (6) screws marked 160. The PA unit canthen be removed. (Fig. 2)6-3Remove the eighteen (18) screws marked 80B. And thenremove the left and right transistor holders from the PA unit.(Fig. 5)6-4Remove the six (6) screws marked 40. And then removethe PA circuit board from the PA unit. (Fig. 5)7.DC Fan(time required: about 8 minutes)7-1Remove the top cover. (See procedure 1.)7-2Remove the PA unit. (See procedure 6-2.)7-3Remove the two (2) screws marked 50. The fan can thenbe removed. (Fig. 6)IC BLOCK DIAGRAMCP200011M5238AP (XM085A00)Dual Operational AmplifierIN: IC301NJM2068L-D (XM356A00)Dual Operational AmplifierIN: IC302, 3031234-V8765Output A+VNon-InvertingInput A-DC Voltage Supply+DC VoltageSupplyOutput BInvertingInput BNon-InvertingInput BInvertingInput A+-+-1A2345678OUTA-INA+INA+INB-INBOUTB-V+V-+B-+CIRCUIT BOARDS CONTENTSAC 1/6 Circuit Board (XY969B0) 12AC 2/6 Circuit Board (XY969B0) 16AC 3/6 Circuit Board (XY969B0) 13AC 4/6 Circuit Board (XY969B0) 12AC 5/6 Circuit Board (XY969B0) 12AC 6/6 Circuit Board (XY969B0) 12IN Circuit Board (XY968B0) 12PA Circuit Board (XY970B0) 14Note: See parts list for details of circuit board component parts.to IN-CN303Component sideLEVEL CONTROL LLEVEL CONTROL Rto IN-CN304to IN-CN305Component sideComponent sideComponent sidePOWER ON/OFFto AC 2/6-CN601to AC 2/6-CN603to AC 2/6-CN602POWERPROTECTIONTEMPLEVEL LLEVEL RCLIP LCLIP RAAto FANto AC6/6-CN617to AC 5/6-CN616to AC 4/6-CN615to AC 2/6-CN614CP200012CIRCUIT BOARDSIN:3NA-V607200AC 1/6, 4/6, 5/6, 6/6: 3NA-V60722012IN Circuit BoardAC 4/6 Circuit BoardAC 1/6 Circuit BoardAC 5/6 Circuit BoardAC 6/6 Circuit BoardINPUTCHANNEL RCHANNEL LYAMAHASPEAKERPROCESSINGPARALLELBRIDGESTEREO(BRIDGE)ONOFFAAto PA-CN101Component sideCP200013Component sideSPEAKERS(-) BRIDGE (+)1221CHANNEL LCHANNEL Rto PA-CN106to AC 2/6-CN612to PA-CN105to REAR PANELIN:3NA-V607200AC 3/6: 3NA-V60722012AC 3/6 Circuit BoardCP200014BBCN101:CN102:to IN-CN306to AC 2/6-W604CN103:CN104:to AC 2/6-W605to AC 2/6-W606CN105:CN106:to AC 3/6-W607to AC 3/6-W609PA Circuit Board3NA-V607211CP200015BBComponent side3NA-V607211Component sideCN601:CN602:CN603:CN604:CN605:to AC 1/6-W601to AC 1/6-W602to AC 1/6-W603to AC cord (L)to AC cord (N)CN606:CN607:CN608:CN609:CN610:to Power transformerto Power transformerto Power transformerto Power transformerto Power transformerCN611:CN612:W604:W605:W606:to Power transformerto AC 3/6-W608to PA-CN102to PA-CN103to PA-CN104to IN-CN301to PowertransformerU, V, TH, W, BABLCN604BRBRWHCN605BEBEBRCN606, CN607BERE Wire ColorsCP200016AC 2/6 Circuit Board3NA-V6072202INSPECTIONSCP2000171.Inspection during stereo mode and parallel mode1.1Preparations1.2Inspection and adjustment1.2.1Fan and temperature indicatorThe fan shall operate when the two jumper wires inside the frame markedFAN-C inside sheet IN are shorted. Next, the temperature indicator shallcome on when the two jumper wires inside the frame marked TM-C areshorted. (Refer to the figure to the right for FAN-C, TM-C.)1.2.2Power on muting timeAt t=2.5 1 seconds after the power switch is turned on, the muting shall be cancelled and the protection indicator shall go off.1.2.3Idling currentGround the input terminal and adjust VR101 (L ch) and VR102 (R ch) so that the CN108 (L ch) and CN107 (R ch) No. 1 and 2terminals show DC voltage of Vb=0.5 0.1 mV.Once all inspections have been completed, re-inspect Vb and adjust so that it is Vb=0.5 0.1 mV.1.2.4Output terminal DC voltageGround the input terminal and measure the Vdc (direct current voltage) of the output terminal. It shall be Vdc=0 75 mV.1.2.5GainAn output voltage of +24.0 0.5 dBu shall be attained when 1 kHz, -10.0 dBu sine wave is input to the input terminal.This inspection shall also be performed in the PARALLEL mode.1.2.6Frequency characteristics* YAMAHA SPEAKER PROCESSING OFF:Using 1 kHz as a standard for the output voltage, the output voltage shall be within -0.5 0.5 dB at 20 kHz when 20 Hz, 1 kHz,20 kHz, -10 B dBu sine waves are input to the input terminal.* YAMAHA SPEAKER PROCESSING ON:Using 1 kHz as a standard for the output voltage, with the Yamaha speaker processing off, the output voltage shall be within +6.5 1.5 dB when a 70 Hz, -10 dBu sine wave is input to the input terminal.1.2.7Total harmonic distortion ratio characteristicsThe total harmonic distortion ration shall be THD=1 % or less when a 1 kHz high definition sine wave is input to the input terminaland the rated output of 650 w + 650 w / 4 ohm (36.4 dBu/ch) has been attained. This inspection shall be completed within 30 seconds.1.2.8Channel separation load resistance 8 When the input terminal for one of th