Rotel-RB-971-OM 电路图 维修手册.pdf

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1、POWER POWER AMPLIFIER RB-971 BRIDGED MONO RB-971 STEREO POWER AMPLIFIER AMPLIFICATEUR DE PUISSANCE STRO STEREO-ENDSTUFE FINALE DI POTENZA STEREO ETAPA DE POTENCIA ESTEREOFONICA Owners Manual Guide dutilisation Bedienungsanleitung Manuale di Istruzioni Manual de Instrucciones RadioFans.CN 收音机爱 好者资料库

2、CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT. INSERT FULLY. APPLICABLE FOR USA, CANADA OR WHERE APPROVED FOR THE USAGE ATTENTION: POUR EVITER LES CHOCS ELECTRIQUES, INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU AU

3、FOND. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. WARNING: There are no user serviceable parts inside. Refer all servicing to qualified service personn

4、el. WARNING: To reduce the risk of fire or electrical shock, do not expose the unit to moisture or water. Do not allow foreign objects to get into the enclosure. If the unit is exposed to moisture, or a foreign object gets into the enclosure, immediately disconnect the power cord from the wall. Take

5、 the unit to a qualified service person for in- spection and necessary repairs. Read all the instructions before connecting or operating the unit. Keep this manual so you can refer to these safety instructions. Heed all warnings and safety information in these instructions and on the product itself.

6、 Follow all operating instructions. Clean the unit only with a dry cloth or a vacuum cleaner. Keep the ventilation inlets on the unit unobstructed. For example, do not place the unit on a bed, sofa, rug, or similar surface that could block the ventilation slots. If the unit is placed in a bookcase o

7、r cabinet, there must be sufficient clearance around the unit and ventilation of the cabinet to allow proper cooling. Keep the unit away from radiators, heat registers, stoves, or any other appliance that produces heat. The unit must be connected to a power supply only of the type and voltage specif

8、ied on the rear panel of the unit. Connect the unit to the power outlet only with the supplied 2-pin polarized power supply cable or an exact equivalent. Do not modify the supplied cable in any way. Do not attempt to defeat grounding and/or polarization provisions. The cable should be connected to a

9、 2-pin polarized wall outlet, matching the wide blade of the plug to the wide slot of the receptacle. Do not use extension cords. Do not route the power cord where it will be crushed, pinched, bent at severe angles, exposed to heat, or damaged in any way. Pay particular attention to the power cord a

10、t the plug and where it exits the back of the unit. The power cord should be unplugged from the wall outlet if the unit is to be left unused for a long period of time. Immediately stop using the unit and have it inspected and/or serviced by a qualified service agency if: The power supply cord or plu

11、g has been damaged. Objects have fallen, or liquid has been spilled, into the unit. The unit has been exposed to rain. The unit shows signs of improper operation The unit has been dropped or damaged in any way Place the unit on a fixed, level surface strong enough to support its weight. Do not place

12、 the unit on a moveable cart that could tip over. This symbol is to alert the user to the presence of uninsulated dangerous voltages inside the products enclosure that may constitute a risk of electric shock. This symbol is to alert the user to important operating and maintenance (service) instructi

13、ons in this manual and literature accompanying the product. RadioFans.CN 收音机爱 好者资料库 Figure 1:Controls and Connections Commandes et branchements Bedienelemente und Anschlsse Controlli e collegamenti Controles y Conexiones POWER POWER AMPLIFIER RB-971 BRIDGED MONO 123 LEFTRIGHT SPEAKERS WARNING:TO RED

14、UCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUENE PAS OUVRIR SPEAKER IMPEDANCE STEREO 4 OHMS MINIMUM BRIDGED 8 OHMS MINIMUMPOWER AMPLIFIER MODEL NO. RB-971 POWER CONSUMPTION: 250W S

15、ERIAL NO. LEFT INPUTRIGHT INPUT 4456 STEREO POWER AMPLIFIER RB-971 RadioFans.CN 收音机爱 好者资料库 PREAMP OUTPUTS RL LEFTRIGHT SPEAKERS WARNING:TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC EL

16、ECTRIQUENE PAS OUVRIR SPEAKER IMPEDANCE STEREO 4 OHMS MINIMUM BRIDGED 8 OHMS MINIMUMPOWER AMPLIFIER MODEL NO. RB-971 POWER CONSUMPTION: 250W SERIAL NO. LEFT INPUTRIGHT INPUT ROTEL RB-971 PREAMPLIFIER / PRAMPLIFICATEUR / VORVERSTRKER / PREAMPLIFICADOR PREAMP OUTPUTS RL LEFTRIGHT SPEAKERS WARNING:TO R

17、EDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUENE PAS OUVRIR SPEAKER IMPEDANCE STEREO 4 OHMS MINIMUM BRIDGED 8 OHMS MINIMUMPOWER AMPLIFIER MODEL NO. RB-971 POWER CONSUMPTION: 250W

18、 SERIAL NO. LEFT INPUTRIGHT INPUT ROTEL RB-971 PREAMPLIFIER / PRAMPLIFICATEUR / VORVERSTRKER / PREAMPLIFICADOR Figure 2:Stereo Connections Inputs and Speakers Branchements des entres et des enceintes en mode stro Anschludiagramm bei Stereobetrieb - Eingnge und Lautsprecher Collegamenti stereo - Ingr

19、essi e diffusori Conexiones para el Funcionamiento en Modo Estereofnico - Terminales de Entrada y de Conexin a las Cajas Acsticas Figure 3:Bridged Mono Connections Inputs and Speakers Branchements des entres et des enceintes en pont mode mono Anschludiagramm bei Brckenschaltung - Eingnge und Lautspr

20、echer Collegamenti mono configurazione “a ponte - Ingressi e diffusori Conexiones para el Funcionamiento en Modo Monofnico Puenteado -Terminales de Entrada y de Conexin a las Cajas Acsticas Jumper Locations Emplacement des Cavaliers Jumperpositionen Le posizioni dei ponticelli Ubicaciones de los Pue

21、ntes About Rotel A family whose passionate interest in music led them to manufac- ture high fidelity components of uncompromising quality founded Rotel over 30 years ago. Through the years that passion has re- mained undiminished and the family goal of providing exceptional value for audiophiles and

22、 music lovers, regardless of their budget, is shared by all Rotel employees. The engineers work as a close team, listening to, and fine tuning each new product until it reaches their exacting musical stan- dards. They are free to choose components from around the world in order to make that product

23、the best they can. You are likely to find capacitors from the United Kingdom and Germany, semi conductors from Japan or the United States, while toroidal power transformers are manufactured in Rotels own factory. Rotels reputation for excellence has been earned through hun- dreds of good reviews and

24、 awards from the most respected re- viewers in the industry, who listen to music every day. Their comments keep the company true to its goal the pursuit of equipment that is musical, reliable and affordable. All of us at Rotel thank you for buying this product and hope it will bring you many hours o

25、f enjoyment. Contents (circled numbers refer to illustration) About Rotel _ 1 Getting Started _ 2 A Few Precautions2 Placement2 AC Power and Control _ 2 AC Power Input 62 Power Switch 1 and Power Indicator 22 Input Signal Connection _ 3 Input Signal Connection 43 Speaker Connection _ 3 Speaker Selec

26、tion3 Speaker Wire Selection3 Polarity and Phasing3 Stereo Speaker Connection 53 Bridged Mono Operation_ 4 Bridged Mono Indicator Light 34 Resetting Jumpers4 Input Connection4 Bridged Speaker Connection4 Troubleshooting _ 4 Front Panel Power Indicator Is Not Lit4 Fuse Replacement4 No Sound4 Specific

27、ations _ 25 1 English Getting Started Thank you for purchasing the Rotel RB-971 Stereo Power Ampli- fier. When used in a high-quality music or home theater system, it provide years of musical enjoyment. The RB-971 is a high-power, two-channel power amplifier, provid- ing the highest level of audio p

28、erformance. Discrete output de- vices, a massive power supply, premium components, and Rotels Balanced Design ensure superb sound quality. High current capa- bility allows the RB-971 to drive the most demanding loudspeakers. Be aware that the RB-971 is capable of high power levels, in ex- cess of 70

29、 watts per channel. Make sure that your speakers can handle the power of the RB-971. If in doubt about your speakers, ask your local Rotel audio retailer for advice. The RB-971 is straightforward in its installation and operation. If you have experience with other stereo power amplifiers, you should

30、nt find anything perplexing. Plug in a pair of high-quality RCA cables from your preamp into the amplifier inputs, wire up your speakers, and enjoy. A Few Precautions Please read this manual carefully. In addition to basic installation and operating instructions, it provides valuable information on

31、various RB-971 system configurations as well as general informa- tion that will help you get optimum performance from your system. Please contact your authorized Rotel audio retailer for answers to any questions you might have. In addition, all of us at Rotel wel- come your questions and comments. S

32、ave the RB-971 shipping carton and all enclosed packing mate- rial for future use. Shipping or moving the RB-971 in anything other than the original packing material may result in severe dam- age to your amplifier. Fill out and send in the owners registration card packed with the RB-971. Also be sur

33、e to keep the original sales receipt. It is your best record of the date of purchase, which you will need in the event warranty service is ever required. Placement Because of its high power output, the RB-971 may generate con- siderable heat. The heat sinks and ventilation openings in the am- plifie

34、r are more than capable of dissipating this heat under normal conditions, but dont smother your amplifier. There must be ad- equate clearance around the chassis. The ventilation slots in the top cover must be unblocked, and there must be reasonable air- flow around the amplifier. Use common sense wh

35、en placing the amplifier in a cabinet or when stacking other equipment. Likewise, remember the weight of the amplifier when you select an installation location. Make sure that the shelf or cabinet can support its considerable bulk. Again, use common sense. AC Power and Control AC Power Input 6 Becau

36、se of its high power rating, the RB-971 can draw consider- able current. Therefore, it should be plugged directly into a 2-pin polarized wall outlet. Do not use an extension cord. A heavy duty multi-tap power outlet strip may be used if it (and the wall outlet) is rated to handle the current demande

37、d by the RB-971 and all the other components connected to it. Be sure the power switch on the front panel of the RB-971 is turned off (in the out position). Then, connect the supplied power cord to the AC power outlet. Your RB-971 is configured at the factory for the proper AC line voltage in the co

38、untry where you purchased it (either 115 volts AC or 230 volts AC with a line frequency of either 50 Hz or 60 Hz). The AC line configuration is noted on a decal on the back panel. Note: Should you move your RB-971 amplifier to another country, it is possible to reconfigure your amplifier for use on

39、a different line voltage. Do not attempt to perform this conversion yourself. Opening the enclosure of the RB-971 exposes you to dangerous voltages. Consult a qualified service person or the Rotel factory service department for information. If you are going to be away from home for an extended perio

40、d of time such as a month-long vacation, it is a sensible precaution to unplug your amplifier (as well as other audio and video compo- nents) while you are away. Power Switch 1 and Power Indicator 2 The power switch is located on the front panel of your amplifier. To turn the amplifier on, push the

41、switch in. The LED indicator above the switch will light, indicating that the amplifier is turned on. To turn the amplifier off, push the button again and return it to the out position. 2 STEREO POWER AMPLIFIER RB-971 Polarity and Phasing The polarity the positive/negative orientation of the connec-

42、 tions for every speaker and amplifier connection must be con- sistent so all the speakers will be in phase. If the polarity of one connection is mistakenly reversed, bass output will be very weak and stereo imaging degraded. All wire is marked so you can iden- tify the two conductors. There may be

43、ribs or a stripe on the insu- lation of one conductor. The wire may have clear insulation with different color conductors (copper and silver). There may be po- larity indications printed on the insulation. Identify the positive and negative conductors and be consistent with every speaker and amplifi

44、er connection. Stereo Speaker Connection 5 The RB-971 has two pairs of color coded binding posts on the back panel. These connectors accept bare wire, connector lugs, or dual banana type connectors (except in the European Commu- nity countries where their use is not permitted). Route the wire from t

45、he RB-971 to the speakers. Give yourself enough slack so you can move the components enough to allow access to the speaker connectors. If you are using dual banana plugs, connect them to the wires and then plug into the backs of the binding posts. The hexagonal thumbscrews of the binding posts shoul

46、d be screwed in all the way (clockwise). If you are using terminal lugs, connect them to the wires. If you are attaching bare wires directly to the binding posts, separate the wire conductors and strip back the insulation from the end of each conductor. Be careful not to cut into the wire strands. U

47、n- screw (turn counterclockwise) the binding post hexagonal thumb- screws. Place the connector lug or wire around the binding post shaft. Turn the hexagonal thumbscrews clockwise to clamp the connector lug or wire firmly in place. Note: Be sure there are no loose wire strands that could touch adjace

48、nt wires or connectors. Input Signal Connection 4 See Figure 2 for normal stereo wiring illustration. The RB-971 has conventional RCA type input connectors, the type found on nearly all audio equipment. Note: To prevent loud noises that neither you nor your speakers will appreciate, make sure the am

49、plifier is turned off when you make any signal connections. Select a high quality pair of audio interconnect cables. Connect the left channel output of your preamp to the left channel input on the RB-971. Connect the right channel output of your preamp to the right channel input. Speaker Connection