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

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1、RDA-7 1 SERVICE MANUAL Seven Channel Amplifier RDA-7 Ref NO. 3651 TABLE OF CONTENTS 1 Cover page 2 Specifications, Supplied accesories 3 Unpacking abd storing the packing materials 4 Front panel 5 Rear panel 7 Chassis-exploded view 8 Parts list 16 Screws 18 Adjustment procedures 19 Pcboard 20 Primar

2、y connections 22 Circuit diagrams SAFETY-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-

3、CURRENT OR RESISTANCE MEA- SUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO Silver model UPP 230 V AC UDT 120 V AC UPT 230 V AC May 2000 RadioFans.CN 收音机爱 好者资料库 RDA-7 2 RDA-7 Supplied accessories Check that the following acc

4、essories are supplied with the RDA-7. Power cord 1 The power cord may differ depending on the region. Power cord Poly bag Instruction Manual Inner carton Specifications AMPLIFIER SECTION Number of channels:7 Power: 150 watts per channel min. RMS at 8 ohms, 2 channels driven from 20 Hz to 20 kHz with

5、 no more than 0.1 % total harmonic distortion. 300 watts per channel min. RMS at 4 ohms, 2 channels driven at 1 kHz with no more than 0.1 % total harmonic distortion. Frequency response -3 dB: 3.5 Hz - 250 kHz Input Impedance:47 kohm each phase Input signal for max output power: 1.2 V Input Sensitiv

6、ity (Unbalanced): 100 mVrms Input Sensitivity (Balanced):200 mV THD:0.03 %(20 Hz to 20 kHz) Damping Factor:40 at 8 ohm Power consumption USA, Canada and some Asian model: 15 A Other models:10 A Rated Speaker Impedance:4 ohms GENERAL Power Supply:AC 120 V, 60 Hz AC 230 V, 50 Hz AC 220 V, 50/60 Hz Dim

7、ensions (W H D):450 195 596 mm 17-11/16 7-11/16 23-7/16 Weight:51.0 kg, 112.4 lbs. Specifications and features are subject to change without notice. Power supply and voltage vary depending on the area in which the unit is purchased. RadioFans.CN 收音机爱 好者资料库 RDA-7 3 Unpacking and storing the packing m

8、aterials Unpacking When unpacking the RDA-7, be sure to remove all accessories from the cardboard box and then check that all are included and none are missing. Removing the RDA-7 After removing the RDA-7, carefully inspect it to make sure that it has not been damaged during the shipping processes.

9、If damaged, contact an Onkyo service station or representative immediately. Also, take down the name of the carrier in case it is necessary to obtain compensation from the carrier service. Storing the packing materials After unpacking, store the cardboard box and packing materials in a safe place; d

10、o not throw them away. If you are to transport the RDA-7 at a later date, you will need this cardboard box and the packing materials. The RDA-7 is very heavy and may become damaged if it is transported in a different box. Inner carton Outer carton (Shipping carton) Inner carton Pad Pad Poly bag RDA-

11、7 4 On Standby On Power O f f Seven Channel Amplifier RDA-7 Front panel facilities Power On / Off Pressing this switch connects the RDA-7 to the main Power outlet and the On indicator lights blue. Sound will be heard after approximately 9 seconds. If you want to operate the RDA-7 using a 12-volt tri

12、gger, connect to the 12V TRIGGER terminal of a control amplifier or pre- amplifier and leave the Power switch of the RDA-7 set to On. For example, to control the RDA-7 while it is connected to the RDC-7 AC controller, connect the 12V TRIGGER A jack of the RDC-7 to the 12V TRIGGER IN jack of the RDA-

13、 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 indicator lights blue. When there is no signal at the 12V TRIGGER, the Standby indicator lights red. On/Standby The RDA-7 is equipped with two indicators to disp

14、lay its status. If both indicators are off, then the main Power switch on the front panel is turned off. If the Power switch is turned on, then one of these indicators will be lit. On: Lights blue when Power is supplied from the AC mains Power supply. Standby: Lights red when no signal is input from

15、 the 12V TRIGGER IN terminal and the RDA-7 is in the Standby state. Note: If the Power switch is pressed and neither indicator lights, check that the Power cord is properly connected and that a fuse has not blown. If the indictors still do not light, turn off the RDA-7, disconnect the Power cord, an

16、d contact an Onkyo service station or representative. If the On indicator lights blue and the Standby indicator flashes red, the protection circuitry of the RDA-7 has activated. The protection circuitry activates if a problem such as a speaker cord shorting or the temperature of the RDA-7 rising exc

17、essively occurs. Turn off the RDA-7, remove the cause of the problem, and then turn the RDA-7 back on. If the problem is still not solved, turn off the RDA-7, disconnect the power cord, and contact an Onkyo service station or representative. RDA-7 5 INPUT SELECT / This switch is located between the

18、balanced input and single-ended RCA input for each channel. Use this switch to select the input type for its channel. Note: Do not change the INPUT SELECT switch setting when the RDA-7 is turned on. Rear panel facilities and connections Unbalanced Input (single end RCA input) Connect controllers or

19、pre-amplifiers with single-ended outputs for high-quality sound. Note: When using this single-ended connection for a specific channel between the pre-amplifier and RDA-7, set the INPUT SELECT switch to the RCA input side to select single-ended input. Next, use high- quality cables and connect the si

20、ngle-ended output from 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 specific channel between the pre-amplifier and RDA-7, set the INPUT SELECT switch to the XLR input side

21、to select balanced input. Next, use high-quality cables and connect the balanced output from the pre-amplifier to the corresponding balanced input on the RDA-7. Do not connect anything to the RCA-type audio input jack. The pin assignments for this terminal are given above. This pin assignment confor

22、ms to the standard adopted by the Audio Engineering Society. Refer to the instruction manual supplied with the pre-amplifier and verify that its output terminal is compatible with the pin assignments for this terminal. If it does not, wire it so that the output pins connect with the proper input pin

23、s. Connector ground terminal: Chassis grounded 2. Disconnecting the input terminal Pull out the connection cord while holding down the lever. Balanced Input (XLR terminal) Connect controllers or pre-amplifiers with balanced outputs for high-quality sound. Precaution for connection This unit comprise

24、s 7 independent power amplifiers, each being capable of reproducing the same quality sound through its channel. Note that you should connect an input source and a speaker to each channel in use. For channels that are not in use, we recommend that you do not connect any input source or speaker. 12 3

25、1. GND 2. non-inverting (+) 3. inverting (-) Input terminal 1. Connecting the input terminal Match the pins and insert the terminal until you hear a “click.” Ensure that it is secure by gently pulling it. SPEAKER IMPEDANCE 4 OHMS MIN. PER EACH SPEAKER TERMINAL AC INLET SEVEN CHANNEL AMPLIFIER MODEL

26、NO. RDA-7 INPUT SELECT OUTPUT FUSE SURROUND BACK RIGHT SURROUND RIGHT 12V TRIGGER INOUT SURROUND LEFTCENTERLEFT SURROUND BACK LEFTRIGHT INPUT SELECT OUTPUT INPUT SELECT OUTPUT INPUT SELECT OUTPUT INPUT SELECT OUTPUT INPUT SELECT OUTPUT INPUT SELECT OUTPUT Caution Do not connect the Power cord until

27、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. Push RDA-7 6

28、Rear panel facilities and connections Fuse The RDA-7 uses a 250V AC slow-blow (time lag) main fuse. To replace the fuse, insert a coin or similar object into the groove, turn it to the left, and remove the fuse. Replace only with the same type and same rating. The correct fuse rating will differ dep

29、ending on the voltage of your set as given here. 120V:T15A/250V 220V/230V/240V:T10A/250V AC INLET Plug the supplied Power cord into this AC INLET and then into the Power outlet on the wall, Caution Do not connect any devices other than speakers to these terminals. Also, never short-circuit the outpu

30、t from these terminals. Be sure not to mistake the positive and negative outputs or the left and right speakers. Doing so will result in an unnatural sound space. Only connect speakers with an impedance of 4 ohms or greater. If a speaker with an impedance of less than 4 ohms is connected, it may dam

31、age the RDA-7. Do not connect more than one speaker cable to one 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 supplied with the RDA-7. The Power cord supplied is desi

32、gned for use with the RDA-7 and should not be used with any other device. Never have the Power cord disconnected from the RDA-7 while the other end is plugged into the wall outlet. Doing so may cause an electric shock. Always connect by plugging into the wall outlet last and disconnect by unplugging

33、 from the wall outlet first. Ground If connecting the unit to another equipment causes noise such as a hum, you may improve the reproduced sound quality by connecting this terminal to the grounding terminal of the connected equipment with a lead wire. 5-12 volts, positive tip polarity 1 345 2 15 mm

34、(5/8 inch) Warning Before replacing the fuse or making any electrical connections, always turn off the Power and disconnect the Power cord. 12V TRIGGER IN/OUT Connect the 12V TRIGGER IN jack to control amplifiers that have a 12V TRIGGER output jack, such as the RDC- 7. This jacks works on between 5

35、to 12 volts DC. With the Power switch of the RDA-7 set to On, you can switch the RDA-7 between the on and Standby states with operations at the control amplifier. If you want another component to be activated by turning on and off the control amplifier connected to the 12V TRIGGER IN jack of the RDA

36、-7, then connect the 12V TRIGGER input jack of that component to the 12V TRIGGER OUT jack of the RDA-7. In this state, even if the RDA-7 is turned off, the signal from the control amplifier passes through the RDA-7 and goes out the 12V TRIGGER OUT jack. Daisy chaining is also possible using these ja

37、cks. Use 3.5-mm (1/8-inch) monaural-type mini-jack connectors. The tip polarity of the connectors are as shown below. 1.Strip away 15 mm (5/8 inch) of wire insulation. 2. Twist wire ends very tight. 3. Unscrew 4. Insert wire 5. Screw + OUTPUT (Speaker output and binding post) The RDA-7 is equipped w

38、ith high-current binding posts for use at output terminals to the speaker system. To obtain the best in sound quality from the RDA-7, we recommend the use of high-quality speaker cables. For each channel, connect the negative (or black) output post to the negative (or black) input terminal of the sp

39、eaker and the positive (or red) output post to the positive (or red) input terminal of the speaker. Make the connections following the procedure given below. Make sure that connections have been made only to the inputs selected with the INPUT SELECT switches and nothing is connected to the other one

40、s. Power cord (supplied) To an AC wall outlet AC INLET RDA-7 7 CHASSIS-EXPLODED VIEW Top Cover Amp Module Front Panel Assembly Chassis RDA-7 8 RDA-7 Amp Module REF. 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

41、 - 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) Resistors R1, R85, R77, R84 - 30.1K R2 - replace to VR8 R3, R17, R49

42、- 2.00K R4 - 110K R5, R81, R83 - 10.0K R67, R75, R76, R78,R80,R82,R6 - 100K R7, R8 - 13.0K R9, R10 - 6.49k R11, R12 - 16k/2W R13, R15 - 47k R14,R16,R41,R42,R26,R27,R47 - 100 Ohm R18, R31, R38, R64 - 5.62k R19, R20, R21, R22 - 43.2k R23 - 147k R24 - Trimpot Single Turn 50k 50k Bourns 3386C R25, R28 -

43、 215 Ohm R29, R33 - 2.15k R30, R32, R37, R39, R51, R52 - 47 Ohm R34, R35 - 619 Ohm R36, R40 - 68.1 Ohm R43, R44 - 10k, 1/2W R45 - 562 Ohm R46 - Trimpot 25 Turn 500 Ohm Bourns 3296X R48 - 158k R50 - 1k R53, R54 - 12k R55 - 215 Ohm R57 - R62 (47-0089) - 0.22 Ohm, 3W, Wirewound (8-21-00) Pecker, Non-Inductive R63 - 10 Ohm, 3W, Wirewound Non-Inductive Parts List RDA-7 9 REF. NO. PART NO. DESCRIPTION R65 - 4.02k R66 - 1k R68 - 562 Ohm R69, R72, R73 - 215k R70 - 261k R71 - 562k R74 -