Pioneer-SX-9000-Service-Manual电路原理图.pdf

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1、INSTALLAT ION. OPERATION AND SERVICE MANUAL Including PARTS LIST, CIRCUIT DIAGRAMS, TROUBLE SHOOTING AND MOUNTING TEMPLATE. rJIONEEIiI RadioFans.CN 收音机爱 好者资料库 FEATURES A MULTI-PURPOSE, EASY-TO.USE DESIGN The SX-9000 was designed to give you a high degree of versatility in operation. You can, for exa

2、mple, use two microphones, two tape decks, two headsets with the SX 9000. All controls are rationallv placed for easy use. The circuitry is qrlite advanced, on a par with professional designs. CLEAN-LINED, CONTEMPORARY APPEARANCE The SX-9000 looks good, too. The front incorporates a folding panel th

3、at adds to its distinctive design. When in operation, the smoked glass dial window lights up with subdued illumination. and the source also lights up for quick identification. HIGH PERFORMANCE TUNER The SX-9000 employs the latest circuitry, including FET and lCs. The resu lt is a professional receiv

4、er of exceptional sensitivity and stab i I ity. PRE-SET TONE COLORS In addition to the normal bass and treble controls, there is a 4-position tone color selector knob. This provides quick switching from flat to soft, bass or vivid. These cttaracteristics are svmbolized in an illuminated window in th

5、e dial face. TAPE-TO-TAPE MON ITOR I NG Two buttons on the front panel allow easy, one-touch monitoring of tapes A or 8 when you use the SX 9000 to copy directly from one tape to another. FOOLPROOF MICROPHONE USE When either microphone knob is set to OFF, the unit operates in parallel to provide mon

6、ophonic signals for both speakers without having to set the mode switch. REVERBERATION EFFECT Also included is a reverberation effect knob. The degree of echo is easily read in the Reverberation window in the dial face SPECIAL OVERLOAD PROTECTION You can play up to three different pairs of speaker s

7、ystems through the SX-9000 in combinations A, B, C, A+8, A+C, B+C. lf all three are accidentally turned on, however, the Overload Protection goes into action and the speakers are automatically shut off. EARPHONE VERSATILITY Because the SX-9000 has two earphones output jacks, two people may I isten s

8、imu ltaneously with earphones without having to go through an accessory junction box. RadioFans.CN 收音机爱 好者资料库 I TJTONEER LINE VOLTAGE SELECTION AND FUSE SWITCHING LINE VOLTAGE SETTING AND FUSE To remove the fuse, turn the fuse cap located on the line voltage selector switch in the direction indicate

9、d by the arrow. Then remove the fuse plug from the unit. Put the fuse plug back so that the proper line voltage marking can be seen through the cut on the edge of the plug. Whenever the position of the selector switch is changed, check the rating of the fuse. A 1.5-ampere fuse is to be used foreithe

10、r 22OY or 240V operation and a S-ampere fuse for 110V, 120V or 130V operation. If the rating of the fuse is correct, replace cap. FUSE REPLACEMENT If the fuse blows, remove the fuse cap and replace the fuse with a new one. STEREO SYSTEM The SX-9000 is general-purpose stereo amplifier. Connect it to

11、the speaker systems (two to six), turntable, tape recorder, etc., which are separately available. INSTALLATION When installing your stereo points. system, check the following o The place should be well-ventilated, and free from dampness and dust. o The units should not be exposed to direct sunlight.

12、 o The units should not be placed near radiators or other heating units. o The place should be substantial and roomy enough for the installation, when installing the unit on a shelf. A WORD ABOUT ROOM ACOUSTICS The quality of reproduced sound varies according to the size and shape of the room, the m

13、aterials of walls, floor and ceiling and the amount and arrangement of fumiture. Too harsh or bright a sound usually results from too many hard reflecting surfaces, and/or too low a ceiling. This condition is improved by having ample carpet area or covering the wall (especially that facing the speak

14、ers) with a thick curtain. On the other hand, too many absorbing surfaces will tend to soak up the sound, resulting in a certain deadness. Furniture may be rearranged to provide irregular reflection of the sound. In any event, the true stereo effect is lost if the two speaker systems are placed too

15、far apart. This may be corrected by angling them slightly toward each other or reducing the distance between them. FUSE CAP Fig. 1 Take off the fuse cap by turning it with a coin, etc. an the direction indicated by the arrow mark. A SPEAKER SYSTEM B SPEAKER SYSTEM C SPEAKER SYSTEM Fig. 2 SPEAKHR SYS

16、TEM CONNECTIONS o First remove the speaker connector plugs from the accessories bag and then connect the speaker leads as shown in Fig. 3. Be sure to match the speaker and plug polarities. o After the plugs are connected, insert the one for the right channel in the left side of the SPEAKER OUTPUTS (

17、A) panel on the rear of the unit. Connect the left channel to the right side of this panel as shown in Fig.3.(Refer also to the connection diagram on Page 4.) . If you have one (or two) more speaker system(s), connect them in the same way, using the B (and C) terminals. ANTENNA AND GROUND CONNECTION

18、S When using the SX-9000 at a place of low field strength or distant from the station, select the most suitable FM and AM antennas as follows, and the efficiency of any antenna depends on its height more than its length. FM ANTENNA o Reception is easier if the building is primarily of wood and is ne

19、ar the FM station, in this case, use the accessory T-type indoor antenna. Unfold the horizontal section of the antenna to its full length, and determine the best direction for the antenna while actually receiving an FM broadcast program. Attach the horizontal section to a wall or other place in the

20、determined direction. (See Fig.4.) o When using the SX-9000 at a relatively long distance from the station, or within a building or home with relatively thick walls, or vicinity of tall buildings, erect an FM outdoor antenna, and connect it to the FM antenna terminals as shown in Fig. 5. AM ANTENNA

21、o If your house is located in area relatively close to the AM station, the ferrite loopstick antenna provided on the back of the SX-9000 will be sufficient for reception of AM broadcast program. The antenna is directional it should be moved about while listening to a station and set at the position

22、which provides the best reception. ( See Fig. 6. ) . If the loopstick antenna does not provide sufficient sensitivity for reception and static is noticeable, put the furnished antenna wire on the wall and connect one end of the wire to the AM antenna terminal. (SeJfig. +.; o If you want reception fr

23、om a distant AM station, you may have to set up an AM outdoor antenna. In such a case, connect one end of the AM outdoor antenna to the AM antenna terminal. (See Fig. b.) RIGHT CH SPEAKER SYSTEM LEFT CH Fig. 3 SPEAKER SVSTEM Fig. - FM OUTDOOR ANTENNA AM OUTDOOR ANTENNA Fig. 5 CONNECTION DIAGRAM N O

24、T E : lf connecting one set of speaker sys- tems to speaker output terminal the speaker of each channel should be 4 to | 6 ohms : however, both outPut terminals (A, B and C speakers)to two speaker systems the of each channel, 8 to 16 ohms. AM ANTENNA AM FERRITE ANTENNA PRE OUT -;-; t t 12o 14o 160 x

25、lokHz ooo F M P H O N O A U X S S T R E E L E V O L U M E B A S S . l . vtvlo M I N M A STER Q- souace A N C E MIC LEVEL CONTROLS () r:torueen R E V E R B E R A T I O N o d to e.djust the stereophonic balance between left and Lt channels. Turning to the left strengthens the left nnel sound; to the r

26、ight, the right channel LANCE CONTROL DE SIIIITCH rtrols the stereo aud mono output functions of the t as foliows . V: Stereo, with right arld r3versed. r Normal stereo. : Left channel sigual fed speakers. : Ii.,ight channel speakers. signal fed P U S H O N M U T I N G L o left chairnel siglals to b

27、oth left and right to both left and right channel sigr-rals mixed, then fed right channel sPeakers. Control the microphone signal input level Control A is for a microphone connected to MIC JACK A, and Control B for MIC JACK B Turning either to the right increases the signal. Ulroplrones can be used

28、at any time, for mixing with another sound source such as a record or recorded tape When a microphone is not being used, that control should be turned all the way to the left (off) NOTE: When only one microphone is used its signal is monaurally fed through both left and right speakers regardless of

29、which iack is useo. When two microphones are used however the one connected to jack A broadcasts through the left speakers while the one connected to iack B is heard through the right M O N . B.l J M I C L E r F:,: . L ( T O N E R: l,eft ar-rd right tr both left and PIONEER SPEAKERS These switches t

30、urn the various speaker systems on and off. Push each button once to turn it on, once again for off. Pushing the A button will cause the sound to be reproduced from the speakers connected to the SPEAKER A terminals. The B and C buttons control their corresponding terminals on the rear of the unit. N

31、OTE: Only two speaker systems can be used at the same time (i.e. A+8, B+C, or A+C). lf all three speaker buttons are pushed at the same time, no sound will be reproduced. If you wish to shut off all speaker sound, simply press the OFF button. TONE COLOR This switch is for selecting the particular to

32、ne . your mood or the music being heard. VIVID: Emphasizes highs and lows for more clarity BASS: Emphasizes bass tones. FLAT: Flat, untempered tone. SOFT: High tones relatively softened. TAPE MONITOR Depress this button to monitor a recording; press it again and it shuts off. During record or tape p

33、lay, or when listening to a broadcast, leave this switch off. Turning it on automatically switches off the speakers. This button is intended to aid in checking recording or editing conditions. There are two TAPE MONITOR jacks, A and B, on the rear (A) and front (B) of this unit, and these two button

34、s correspond to them. Button A directs the signal through jack A, and button B through jack B. SELECTOR This switch is for choosing the program source. AM:For receiving AM broadcasts. FM MONO/WIRELESS: For FM monophonic broad- casts, or for broadcasting the signal from a wireless FM microphone. FM A

35、UTO: For automatic switchover between FM mono and stereo broadcasts. PHONO 1: For playing records on a turntable con- nected to the PHONO 1 terminals. PHONO 2: Same as above, for PHONO 2 terminals. AUX 1: For playing signals fed to the AUX 1 terminals. Same as above. for AUX 2 terminals. MIC JACK A,

36、 B Plug a microphone used into one of these jacks. Two microphones can be used at the same time. to suit sound AUX 2: RECEPTION OF FM 1. Set the SELECTOR switch to FM STEREO. 2. Turn the MUTING switch on (unless the signal strength is very low-then leave it off). 3. Tune in the desired station while

37、 watching the TUNING meters. Best reception is obtained when the dial pointer of the Iower meter deflects as far to the right as possible for that station, while that of the upper meter is centered. If the broadcast is stereo. the FM Stereo indicator will light up. It remains unlit if the broadcast

38、is monophonic, and the set automatically switchover for monophonic a. ffi:1Ting is complete, slowly turn up the VoLUME SOURCE and MASTER knobs until the proper level is achieved. Then adjust the BASS, TREBLE, TONE COLOR and other controls for the most pleasing sound. 5. To increase reverberation, tu

39、rn the REVERB knob to the right. For FM reception located far away from the station, or when external noise is high, reception can be improved by setting the SELECTOR to FM MONO. In this case, however, stereo programs will be received as monophonic. RECEPTION OF AM 1. Set the SELECTOR switch to AM.

40、2. Tune in the desired station while watching the lower TUNING meter. Tune so that the dial pointer deflects as far to the right as possible for that station- 3. After tuning is complete, slowly turn up the VOLUME to the desired level, then adjust the BASS, TREBLE and TONE COLOR controls. 4. To incr

41、ease reverberation, turn the REVERB knob to the right. If noise is extremely high during both FM and AM reception, the problem could be in the antenna and . ground. Reread the section, ANTENNA CONNECTION AND GROUNDING, page 3. LISTENING TO RECORDS 1. Set the SELECTOR switch to PHONO 1 or PHONO 2. To

42、 use the turntable connected to the PHONO 1 terminals, set to PHONO 1, for that connected to PHONO 2,setto PHONO 2. 2. If tbe record is monophonic, set the MODE switch to either L or R. 3. Adjust the VOLUME, BASS, TREBLE and TONE COLOR controls. 4. To increase reverberation. turn the REVERB knob to

43、the right. TJIONEEfiI USING MICROPHONES The SX-9000 permits the use of two microphones at once, for such purposes as recording a concert in stereo; even performances or dramas in large theaters can be efficiently recorded. 1. Turn the VOLUME - SOURCE knob all the way down if microphone recording onl

44、y is desired. If mixed recording, combined with music from a record, etc., is desired, set the SOURCE knob to the best level. 2. Tii,e MIC LEVEL A knob controls the input from a microphone plugged into MIC jack A; knob B controls jack B. Tum either of these knobs to the right to increase input signa

45、l strength. Adjust the level while watching for howling (acoustical feedback of the speaker signal through the microphone). If this occurs, reduce the volume or separate the microphone(s) and speakers. If only one microphone is used, plug it into either jack. If setting the MIC LEVEL for another jac

46、h not being used to OFF, the sound will be reproduced from both speakers. NOTE: When adjusting the MIC LEVEL control, be careful not to cause howling. Howling is of course unpleasant to hear, but it can also damage the VU meter of your tape recorder or deck during recording. 3. If two microphones ar

47、e used, the one connected to jack A will broadcast over the left channel, B the right. If you wish to use only one of these microphones at any time, tum the unused microphone level control off. Then the microphone used will broadcast over both channels. USING TAPE DECKS AND TAPE RECORDERS As shown i

48、n Fig. 9, signals heard from the speakers are normally fed to the SX-9000 TAPE REC A and B terminals. When recording, set the SELECTOR and MODE switches to your program source. Refer to the sections on Listening to Broadcasts and Listening to Records. Recording signals cannot be regulated by the SX-

49、9000 VOLUME, BASS, TREBLE and TONE COLOR switches. These must be adjusted by the recording level control on the tape deck/tape recorder. NOTE: When using mono tape recorders, either the left channel signal or the right channel signal may be recorded, but not both. The CENTER CHANNEL terminal should therefore be used. TAPE MONITOR With 2-head and 3-head type tape recorders fitted with monitor mechanisms, turning the TAPE MONITOR switch ON during recording has the following effects (if recording and playback heads are first connected): With the 2-head type, signals