IntegraResearch-RDA7-pwr-sm 维修电路原理图.pdf

RDA-71SERVICE MANUALSeven Channel AmplifierRDA-7Ref NO. 3651TABLE OF CONTENTS1 Cover page2 Specifications, Supplied accesories3 Unpacking abd storing the packing materials4 Front panel5 Rear panel7 Chassis-exploded view8 Parts list16 Screws18 Adjustment procedures19 Pcboard20 Primary connections22 Circuit diagramsSAFETY-RELATED COMPONENT WARNING!COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBER APPEAR AS SHOWN IN THIS MANUAL.MAKE LEAKAGE-CURRENT OR RESISTANCE MEA-SUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO Silver modelUPP 230 V ACUDT 120 V ACUPT 230 V ACMay 2000RadioFans.CN 收音机爱 好者资料库RDA-72RDA-7Supplied accessoriesCheck that the following accessories are supplied with the RDA-7.Power cord 1The power cord may differdepending on the region.Power cordPoly bagInstruction ManualInner cartonSpecificationsAMPLIFIER SECTIONNumber of channels:7Power:150 watts per channel min. RMS at 8 ohms, 2 channelsdriven from 20 Hz to 20 kHz with no more than 0.1 % totalharmonic distortion.300 watts per channel min. RMS at 4 ohms, 2 channelsdriven at 1 kHz with no more than 0.1 % total harmonicdistortion.Frequency response -3 dB: 3.5 Hz - 250 kHzInput Impedance:47 kohm each phaseInput signal for max output power:1.2 VInput Sensitivity (Unbalanced):100 mVrmsInput Sensitivity (Balanced):200 mVTHD:0.03 %(20 Hz to 20 kHz)Damping Factor:40 at 8 ohmPower consumptionUSA, Canada and some Asian model:15 AOther models:10 ARated Speaker Impedance:4 ohmsGENERALPower Supply:AC 120 V, 60 HzAC 230 V, 50 HzAC 220 V, 50/60 HzDimensions (W H D):450 195 596 mm17-11/16 7-11/16 23-7/16Weight:51.0 kg, 112.4 lbs.Specifications and features are subject to change withoutnotice.Power supply and voltage vary depending on the area inwhich the unit is purchased.RadioFans.CN 收音机爱 好者资料库RDA-73Unpacking and storing the packingmaterialsUnpackingWhen unpacking the RDA-7, be sure to remove allaccessories from the cardboard box and then checkthat all are included and none are missing.Removing the RDA-7After removing the RDA-7, carefully inspect it to makesure that it has not been damaged during the shippingprocesses. If damaged, contact an Onkyo servicestation or representative immediately. Also, take downthe name of the carrier in case it is necessary to obtaincompensation from the carrier service.Storing the packing materialsAfter unpacking, store the cardboard box and packingmaterials in a safe place; do not throw them away. Ifyou are to transport the RDA-7 at a later date, you willneed this cardboard box and the packing materials.The RDA-7 is very heavy and may become damaged ifit is transported in a different box.Inner cartonOuter carton(Shipping carton)Inner cartonPadPadPoly bagRDA-74OnStandbyOnPowerO f fSeven Channel Amplifier RDA-7Front panel facilitiesPower On / OffPressing this switch connects the RDA-7 to the mainPower outlet and the On indicator lights blue. Sound willbe heard after approximately 9 seconds. If you want tooperate the RDA-7 using a 12-volt trigger, connect tothe 12V TRIGGER terminal of a control amplifier or pre-amplifier and leave the Power switch of the RDA-7 set toOn.For example, to control the RDA-7 while it is connectedto the RDC-7 AC controller, connect the 12V TRIGGER Ajack of the RDC-7 to the 12V TRIGGER IN jack of the RDA-7 with a 3.5-mm (1/8-inch) mini-jack cable.If a plug is connected to the 12V TRIGGER IN jack:The signal reaches the 12V TRIGGER, the On indicatorlights blue. When there is no signal at the 12V TRIGGER,the Standby indicator lights red.On/StandbyThe RDA-7 is equipped with two indicators to display itsstatus. If both indicators are off, then the main Powerswitch on the front panel is turned off. If the Power switchis turned on, then one of these indicators will be lit.On: Lights blue when Power is supplied from the ACmains Power supply.Standby: Lights red when no signal is input from the12V TRIGGER IN terminal and the RDA-7 is in theStandby state.Note:If the Power switch is pressed and neither indicator lights,check that the Power cord is properly connected andthat a fuse has not blown. If the indictors still do not light,turn off the RDA-7, disconnect the Power cord, andcontact an Onkyo service station or representative.If the On indicator lights blue and the Standby indicatorflashes red, the protection circuitry of the RDA-7 hasactivated. The protection circuitry activates if aproblem such as a speaker cord shorting or thetemperature of the RDA-7 rising excessively occurs. Turnoff the RDA-7, remove the cause of the problem, andthen turn the RDA-7 back on. If the problem is still notsolved, turn off the RDA-7, disconnect the power cord,and contact an Onkyo service station or representative.RDA-75INPUT SELECT / This switch is located between the balanced input andsingle-ended RCA input for each channel. Use thisswitch to select the input type for its channel.Note: Do not change the INPUT SELECT switch setting whenthe RDA-7 is turned on.Rear panel facilities and connectionsUnbalanced Input (single end RCA input)Connect controllers or pre-amplifiers with single-endedoutputs for high-quality sound.Note: When using this single-ended connection for aspecific channel between the pre-amplifier andRDA-7, set the INPUT SELECT switch to the RCA inputside to select single-ended input. Next, use high-quality cables and connect the single-ended outputfrom the pre-amplifier to the corresponding single-ended input on the RDA-7. Do not connect anything to the balanced input jack.Note: When using this balanced connection for a specificchannel between the pre-amplifier and RDA-7, setthe INPUT SELECT switch to the XLR input side to selectbalanced input. Next, use high-quality cables andconnect the balanced output from the pre-amplifierto the corresponding balanced input on the RDA-7. Do not connect anything to the RCA-type audioinput jack.The pin assignments for this terminal are given above.This pin assignment conforms to the standard adoptedby the Audio Engineering Society. Refer to theinstruction manual supplied with the pre-amplifier andverify that its output terminal is compatible with the pinassignments for this terminal. If it does not, wire it so thatthe output pins connect with the proper input pins.Connector ground terminal: Chassis grounded2. Disconnecting the input terminalPull out the connection cord while holding down the lever.Balanced Input (XLR terminal)Connect controllers or pre-amplifiers with balancedoutputs for high-quality sound.Precaution for connectionThis unit comprises 7 independent power amplifiers,each being capable of reproducing the same qualitysound through its channel. Note that you shouldconnect an input source and a speaker to eachchannel in use. For channels that are not in use, werecommend that you do not connect any input sourceor speaker.1231. GND2. non-inverting (+)3. inverting (-)Input terminal1. Connecting the input terminalMatch the pins and insert the terminal until you hear a“click.” Ensure that it is secure by gently pulling it.SPEAKER IMPEDANCE4 OHMS MIN. PER EACHSPEAKER TERMINALAC INLETSEVEN CHANNEL AMPLIFIERMODEL NO. RDA-7INPUT SELECTOUTPUTFUSESURROUND BACK RIGHTSURROUND RIGHT12V TRIGGERINOUTSURROUND LEFTCENTERLEFTSURROUND BACK LEFTRIGHTINPUT SELECTOUTPUTINPUT SELECTOUTPUTINPUT SELECTOUTPUTINPUT SELECTOUTPUTINPUT SELECTOUTPUTINPUT SELECTOUTPUTCaution Do not connect the Power cord until you have finished all other connections. Read the instructions that came with the other components you are connecting. Do not make connections to input or output jacks while the RDA-7 is turned on (Power on). Always turn the volume of the pre-amplifier down before turning on the RDA-7.PushRDA-76Rear panel facilities and connectionsFuseThe RDA-7 uses a 250V AC slow-blow (time lag) mainfuse. To replace the fuse, insert a coin or similar objectinto the groove, turn it to the left, and remove the fuse.Replace only with the same type and same rating. Thecorrect fuse rating will differ depending on the voltageof your set as given here.120V:T15A/250V220V/230V/240V:T10A/250VAC INLETPlug the supplied Power cord into this AC INLET and theninto the Power outlet on the wall,Caution Do not connect any devices other than speakers tothese terminals. Also, never short-circuit the outputfrom these terminals. Be sure not to mistake the positive and negativeoutputs or the left and right speakers. Doing so willresult in an unnatural sound space. Only connect speakers with an impedance of 4ohms or greater. If a speaker with an impedance ofless than 4 ohms is connected, it may damage theRDA-7. Do not connect more than one speaker cable toone output terminal. Doing may damage the RDA-7.Be sure to read “Phasing your speaker system” and“Speaker ratings” on the following page. Do not use a Power cord other than the one suppliedwith the RDA-7. The Power cord supplied is designedfor use with the RDA-7 and should not be used withany other device. Never have the Power cord disconnected from theRDA-7 while the other end is plugged into the walloutlet. Doing so may cause an electric shock. Alwaysconnect by plugging into the wall outlet last anddisconnect by unplugging from the wall outlet first.GroundIf connecting the unit to another equipment causesnoise such as a hum, you may improve the reproducedsound quality by connecting this terminal to thegrounding terminal of the connected equipment with alead wire.5-12 volts,positive tippolarity1345215 mm(5/8 inch)WarningBefore replacing the fuse or making any electricalconnections, always turn off the Power and disconnectthe Power cord.12V TRIGGER IN/OUTConnect the 12V TRIGGER IN jack to control amplifiersthat have a 12V TRIGGER output jack, such as the RDC-7. This jacks works on between 5 to 12 volts DC. With thePower switch of the RDA-7 set to On, you can switch theRDA-7 between the on and Standby states withoperations at the control amplifier.If you want another component to be activated byturning on and off the control amplifier connected tothe 12V TRIGGER IN jack of the RDA-7, then connect the12V TRIGGER input jack of that component to the 12VTRIGGER OUT jack of the RDA-7. In this state, even if theRDA-7 is turned off, the signal from the control amplifierpasses through the RDA-7 and goes out the 12VTRIGGER OUT jack. Daisy chaining is also possible usingthese jacks.Use 3.5-mm (1/8-inch) monaural-type mini-jackconnectors. The tip polarity of the connectors are asshown below.1.Strip away 15 mm (5/8 inch) of wire insulation.2. Twist wire ends very tight.3. Unscrew4. Insert wire5. Screw+ OUTPUT (Speaker output and binding post)The RDA-7 is equipped with high-current binding postsfor use at output terminals to the speaker system. Toobtain the best in sound quality from the RDA-7, werecommend the use of high-quality speaker cables.For each channel, connect the negative (or black)output post to the negative (or black) input terminal ofthe speaker and the positive (or red) output post to thepositive (or red) input terminal of the speaker.Make the connections following the procedure givenbelow. Make sure that connections have been made onlyto the inputs selected with the INPUT SELECT switchesand nothing is connected to the other ones.Power cord (supplied)To an AC wall outletAC INLETRDA-77CHASSIS-EXPLODED VIEWTop CoverAmp ModuleFront Panel AssemblyChassisRDA-78RDA-7 Amp ModuleREF. NO. PART NO. DESCRIPTION Heatsink 11 - M3X6, Pan Hd Phil, BLACK oxide, Screw(PCBH)11-1 - Standoff 4.5M3X8, BR517109.0-00 PCB Bracket 5 - 6-32x3/8, Pan Hd Phil SEMS, Blk, Screw(PCBB) SP terminal - Nut, Washer included (21-0062) - Cover 21-0062, CL159706YA - Wire (Red), 14AWG - Wire (Black), 14AWG PCB(RDA-7-010-C) - TERM: Lug solder #6, Mfg #21 ERICK (JMP 14-2014) ResistorsR1, R85, R77, R84 - 30.1KR2 - replace to VR8R3, R17, R49 - 2.00KR4 - 110KR5, R81, R83 - 10.0KR67, R75, R76, R78,R80,R82,R6 - 100KR7, R8 - 13.0KR9, R10 - 6.49kR11, R12 - 16k/2WR13, R15 - 47kR14,R16,R41,R42,R26,R27,R47 - 100 OhmR18, R31, R38, R64 - 5.62kR19, R20, R21, R22 - 43.2kR23 - 147kR24 - Trimpot Single Turn 50k 50k Bourns 3386CR25, R28 - 215 OhmR29, R33 - 2.15kR30, R32, R37, R39, R51, R52 - 47 OhmR34, R35 - 619 OhmR36, R40 - 68.1 OhmR43, R44 - 10k, 1/2WR45 - 562 OhmR46 - Trimpot 25 Turn 500 Ohm Bourns 3296XR48 - 158kR50 - 1kR53, R54 - 12kR55 - 215 OhmR57 - R62 (47-0089) - 0.22 Ohm, 3W, Wirewound (8-21-00) Pecker, Non-InductiveR63 - 10 Ohm, 3W, Wirewound Non-InductiveParts ListRDA-79REF. NO. PART NO. DESCRIPTIONR65 - 4.02kR66 - 1kR68 - 562 OhmR69, R72, R73 - 215kR70 - 261kR71 - 562kR74 - 348kR86 - 7.5kR87, R88 - 10 Ohm R90, R91 - 1kR92 - Do Not LoadR93 - Zero Ohm Jumper TubeR95, R96 - Do Not Load Capacitors C1, C2 - 0.01uF ATI 15-0054, AC CeramicC3 - C6 (15-0051) - 10,000uF/ 80V LP5 -80V103MS57, ElnaC7, C9, C40 - 100uF/100V, Alum. axl BC 2222 021 90532C8, C10 - 0.47uF/100V E1474, PolyesterC11, C12 - 1uF/50V Tant., P2073-ND or Equiv.C13, C14 - 3.3uF/100V EF1335-ND 15-0034, Polyester C15 - 220uF/50V Radial 10 x16mm, EL P6269-NDC17, C20 - 10uF/100V EF1106-ND, Polyester C18, C19 - 1000pF/50V P3102-ND or Equiv., Film C21 - 3.3uF/100V EF1335-ND 15-0034, Polyester C22, C23 - 6.8pF/50V Axial, Cer. C24, C25 - 22p/ 100V Axial, Cer. C26 - 0.1uF/50V P4593-ND, Film C27 - 0.01uF/50V RA, 103, Cer. C28 - 1000pF/50V Axial, Cer. C29 - 4.7uF/25V, Tant C30, C31, C35, C39, C45 - .01uF/50V, Axial, Cer.C32, C33, C34 - .1uF/50V Axial, Cer. C36 - 47uF/25V, 5mm, radial, P6238-ND, EL C37 - 10pF 50V Axial , Cer.C41 - 0 33uF 10V Radial P6212-ND, Alum.C42 - 2.2uF 100V Radial P6290-ND, Alum. C38 - 100pF/50V, Poly, Inductors L1 - Load 16 Gage Bare Wire Jumper Nylon Tube Fuses F3, F4 - Littelfuse Pico II R251 015, F837-ND Semiconductors CR1, CR2 - Rectifier Bridge 10A12 - 5-40 x1/2, Socket Hd Cap, Blk (25-0052), Screw(TRM)12-1 - Washer, Square Cone #6x.312, 25-0048RDA-710REF. NO. PART NO. DESCRIPTIONCR3, CR4 - LED T-1 3/4 GreenCR6, CR7, CR8, CR10, - Diode Switching 1N4150 orCR11, CR12 - 1N4148CR9 - LED T-1 Red (24-5007)CR13 - DIP Bridge 1A 400VVR1 - Zener 30V 400mW Axial, 1N5256BVR2 - VR5, VR8 - Zener 24V 400mW Axial, 1N5252BVR6, VR7 - Zener 12V 400mW Axial, 1N5242BQ1 - IRF620, MOSFET or - IRF621 13 - 5-40 x3/8(Q1), Socket Hd Cap, Blk (25-0033), Screw(TRS)13-1 - Nut(Q1), Hex KEP, 5-40 Zinc13-2 87643008 W3x8F(BC), Washer(Q1)13-3 871130 SW-3, Spring Washer(Q1)Q2 - IRF54013 - 5-40 x3/8(Q2), Socket Hd Cap, Blk (25-0033), Screw(TRS)13-2 87643008 W3x8F(BC), Washer(Q2)13-3 871130 SW-3, Spring Washer(Q2)13-4 28170075 TOSHIBA AC331, Bush(Q2) - Sheet(Q2)Q3 - 2N5401Q4 - 2N5551Q5 - IRF5210 or - IRF9540N13 - 5-40 x3/8(Q5), Socket Hd Cap, Blk (25-0033), Screw(TRS)13-2 87643008 W3x8F(BC), Washer(Q5)13-3 871130 SW-3, Spring Washer(Q5)13-4 28170075 TOSHIBA AC331, Bush(Q5) - Sheet(Q5)Q6, Q7 - 2SC3381Q8 - 2SA1349Q9 - 2N5550Q10 - 2N5400Q11 - 2SA183713 - 5-40 x3/8(Q11), Socket Hd Cap, Blk (25-0