Scott-RS30-Operation-Manual 电路图 维修手册.pdf

OWNERS MANUAL AM/FM STEREO RECEIVER MODEL RS30 RadioFans.CN 收音机爱 好者资料库 WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. DD NOT OPEN CAUTION: TO REDUCE THE RISK OF ELEC- TRIC SHOCK, DO NOT REMOVE COVER. NO USER,SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PER SONNEL. CONTENTS Ex.planation of Graphical Symbols (ttooe Sys1em fig. inte,o, 11,eia! w111, p,pe1 , , ,ouno Clamps Bonding Jumper d ; ;40ptional An1cnn11 G101,1nding E.1ec:t10(1 t=:/:1 ;o the ea,th ,t See NEC $QC11Qntl102l (11, a. Use No. 10 AWG 15.3mm1) coper, No. 8 WAG (8.4mm1 aluminum, No. 176 AWG (1 .Dmml copper-clad steel or bronze wi,e, or 1arger, as o ground wire. b, Secure antenna lead-in and ground wires 1 0 house with staod,off insulators spaced from 4 feet (1.22m) to 6 feet (1,83m) apart. c. Mount antenna dischar90 unit, as close as pouibJe to where lead-in enters house. d. Use jumper wire not smaller than No. 6 AWG (13.3m2) copper, or the eQuivalent, when a separate antenna- grounding electtode is used. See NEC Se-ctlon 810-21 (j). 16. Nonuse Periods -The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. 17. Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilled into the-enclosure through openings. 18. Damage Requiring Service -The appliance should be serviced by qualified service pe,sonnel when: A. The power-supply cord or the plug has been damaged; or 8. Objects have fallen, or liquid has been spilled into the appliance; or C. The appliance has been exposed to rain; or D. The appliance does not appear to operate normally or exhibits a marked change in performance; or E. The appliance has been dropped, or the enclosure damaged. FEATURES AMPLIFIER SECTION Tone Controls ( Bass. Treble) Hi-Filter switch 5x1 segment LED power meters CD/DAT input jacks Low distortion high power amplifier SPECIFICATIONS AMPLIFIER SECTION Output Power THO F rcquency Response Signal/Noise Ratio IHF/A Curve Phone Others Tone Controls (bass treble) 1 OOHz/1 OK Hz 25W RMS 0.9% 20- 30Khz 70dB 85d8 10d8 Minimum continuous RMS output power per channel, both channels driven into 8 ohms from 20Hz to 20,000 Hz with no more than rated THO. FM SECTION Tuning Range Usable Sensitivity (s/n 30dB) Mono Image Rejection Distortion ( 1 KHz) Mono Stereo Stereo Separation 87 .5 to 108 MHz l 1.2d8f 35d8 0.25% 0.5% 35dB 19. Servicing -The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel. SYNTHESIZED TUNER SECTION 8 AM and 8 FM station memory Precise FreQuency LCD display Quartz Lock indicator Auto searching tuning system AM SECTION Tuning Range Usable Sensivity Image Rejection Distortion GENERAL Power Source Power Consumption Dimensions (WxHxD) Weight 630 to 1620Khz 300V/m 35d8 1% AC 120V, 60Hz 190W 43Sx97x290(mm) 6.0Kg Because we continually strive to improve our products, we reserve the right to alter specifications without notice. 4 5 CONNECTION DIAGRAM -DIRECTION OF STATIONS JOO! . TWIN LEAD ,_.WIRE - Ill (RI (TURN! ABLE) ICD PLAYER DAT TAPE (CASSETTE , RECORDER) TAPE DECK . - - - - - - - -inot included)- - . . - - FM OUTOOOF ANTENNA l AM L OOP ANTENNA (INCLUDED) : :_T-;_ - !O EU:CTR1C POWER OUTlET ()1-)1-)f ) II (R) IL) !SPEAKER SYSTEM! (Fig.1 UNPACKING Carefully remove all items from the master individual cartons. Before discarding any of the packing materials. exam- ine them carefully for items you may have overlook ed. It will be to your advantage to save the original cartons, cushions and wrapping materials They will prove valuable in preventing damage should you ever have to transport or ship your system. Accessories contained in CARTON are: Owners manual Warranty card Schematic diagram AM loop antenna FM dipole antenna INSTALLING THE SYSTEM RS30 CAUTION: Do not plug the power cord of the Receiver into an AC wall outlet until all connecdons have been made. Be sure to make the correct connections, paying at- tention to the L (left channel), R (right channel),(+) and - J marks. Plug in the cables and connect the lead wires securely. Loose connections will result in unsatisfactory sound reproduction or cause noise pro- blems. Refer to Fig. 1. on Page 5. Refer to INSTALLATION OF FM ANTENNA for pro- per antenna installation. 1. ANTENNA TERMINALS Connecting an FM Antenna Choose an appropriate FM Antenna, taking into consideration the strength of signals to be received and the prevailing conditions for FM reception. 0 ipole Antenna Connect the Dipole Antenna supplied with the SYSTEM to the ANTENNA terminals marked FM 30011 (Fig. 2). Outdoor Antenna with 30011 wire Connect the wire to the ANTENNA tcrmials marked FM 30011 (Fig. 2). FM Outdoor Ant. FM Indoor OipoleAnt. FM Indoor Ant. Fig. 2 Connect suitable FM outdoor or indoor dipole antenna to the FM antenna input terminals. Position dipole antenna for best reception. For outdoor antenna system using coDxial cable, refer to the drawing below. NOTE: In weak-signal areas, the use of an outdoor FM antenna is necessary for good FM reception. Contact your dealer for advice. d 20 mm 25/32) LJ 10 mm (3/8) Be sure the shield braid contacts the clamp 2. AM INDOOR LOOP ANTENNA . This tuner is equipped with an AM loop indoor an tenna to receive local AM broadcast stations. Snap the loop antenna into the plastic clip provided on the right side of the tuner and con,ect the wires from the loop antenna to thC terminals marked AM and GNO (See Fig. 3). If the reception is weak on some stations. adjust the position of the Loop antenna. If the reception cannot be improved, the installation of an AM external antenna is recommended. NOTE: When recording an AM broadcast or listening to it while dubbing, beat noise may occur. If it does. place the AM loop indoor antenna as far away from a cas sette deck as possible. 6 Antenna Holder = Loop Antenna Fig. 3 ,.-When attaching the antenna to the unit-. This type of installation may cause impaired recep- tion or result in signal noise. If possible, attach the antenna to a rack, a wall, or a column. Move the antenna toward the right or left to find the point of best reception. AM antenna holder ( B) (included) Ji-AM loop antenna (included) Rear panel of the receiv ,-When attaching the antenna to a wall, column or rack Find the height and direction of the antenna where reception i$ best and them fix it vertically to a wall, a rack, etc. AM loop antenna Column .:ll (included: :-:,;- : I,. :i: AM antenna holder (A) (included) Rear panel of the rack AM antenna holder (Al (included) EXTERNAL AM ANTENNA INSTALLATION Connect the external antenna together with the Loop antenna to the terminals. Outdoor single-wire antenna for AM reception. For the reception of faint AM signals in a remote area, or inside a ferro concrete building, the installation of a single wire outdoor antenna is recommended. Spread an insulated wire about 30 feet in length. An antenna of this kind will pick up radio waves too weak for the loop antenna to receive. A single-wire antenna stretched along the house will also produce good results. The indoor end of the antenna should be connected to the ANTENNA terminal marked AM. GNO (Ground I connection 7 When installing an outdoor AM antenna, connect a ground wire to the ANTENNA terminal marked GND. Note to CA TV system installer: This reminder is provided to call the CATV system in sta liers attention to Article 820-22 of the NEC that pro- vides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to t_he grounding system of the building as close to the point of cable entry as practical. FM ANTENNA INSTALLATION For the best FM sound quality, it is necessary to install an appropriate type of antenna. Consideration should be given to the signal strength of broadcast stations and the surrounding conditions. SELECTION OF A FM ANTENNA With nearby FM stations: Use the dipole antenna supplied with the RS30 for the reception of local stations. (See Fig. 21 NOTE: Every antenna has a directional characteristic (its ability to pick up signals varies according to its Orienta tionl. Spread the T-section of the dipole antenna. Rotate it in order to determine the best signal-receiving position and then install it In that position. In areas relatively near FM stations: In case the supplied dipole antenna fails to eliminate noise interference, or if you want to pick up signals from distant stations, install a multi-element outdoor antenna. NOTE: Generally, the sensitivity of an outdoor FM antenna corresponds to the number of its elements. This sho uld be the criterion for the selection of a FM antenna. Directional characteristic of an outdoor FM antenna: An increase in the number of elements not only im proves the sensitivity of the antenna but also enhances its directional characteristics. This means that such an antenna has to be positioned accurately for the best reception of FM radio waves. MULTI-PATH DISTORTION A nearby mountain or a high-rise building reflects FM radio waves, which interferes with the incoming signals. This noise and sound distortion is known as multi-path distortion. Multi-path distortion can be considerably reduced by tak ing advantage of the directional characteristics of a multi- element FM antenna and by using an antenna rotor. GENERAL GUIDELINES ON FM ANTENNAS FOR OUTDOOR INSTALLATION Keep the foll owing in mind when installing a outdoor FM antenna: Install the antenna away from road traffic and place the antenna as high above the ground as possible. Determine the best antenna position in relation to nearby buildings and trees. Keep the antenna away from high-voltage power lines. JACKS AND TERMINALS ON RECEIVER PHONO INPUT JACKS Connect the output cables from a turntable to the jacks marked PHONO on the receiver. The upper jack is for the L (left) channel and the I ewer one for the R (rightl channel. Ge sure to make the correct connections. CD/DAT INPUT JACKS To connect the audio output jacks from a compact disc CD) or a OAT. SWITCHED AND UNSWITCHED AC OUTLETS To connect an external audio or video player on the rear AC outlets. Be sure the AC wattage rating of the external unit does-not exceed the wattage rating printed on each outlet, The unit connected to the switched outlet is con- trolled on the receiver power switch. TAPE IN/OUT JACKS Make the connections from the TAPE REC (LINE IN) on the rear of a cassette deck, to the REC (OUT) jacks on the rear of the receiver. Make the connections from the TAPE PLAY (LINE OUT) on the rear of a cassette deck to the PLAY IN) jacks on the receiver. SPEAKER TERMINALS (Connecting the speakers) Four terminals arc provided to connect one pair of speakers. Place one speaker on the left side of the receiver and connect it to the terminal marked L (leftl. Place the other speaker on the right side of the receiver and connect It to the terminal marked R right). Be careful to observe the correct polariw of the speaker connections. The (+) plus and (-) minus terminals on the speakers, must be connected to the ( +) red and (- ) black on the terminals on the rear of the receiver. (If you need to replace the speaker wires for longer ones, be sure t.o use two color speaker wires for easy identification). If the polarity is not indicated on the speakers, just con- nect them. If the sound does not come from a point between the two speakers and the bass response appears Insufficient. the speaker connections are out of phase. Reverse the (+) and - ) connections on either one of the speakers. CAUTION: Be sure the lead of the speaker wires do not touch each other this can cause a short circuit on the speaker terminals. 1 press the rminal, , 1 insert the stropped _ !mi- wire and release the terminal. 2 Pull lightly on the connection to make sure it is secure. IMPORTANT: Before connecting the speaker cords to the speaker ter- minals, strip about 3/8 inch of insulation from the end of each conductor. Twist the exposed strands of wire tightly, so that the wire ends become easy to handle and good contact can be maintained. Push down on the terminal lever with your finger. Insert the speaker wire into the hole and release the lever. 8 FRONT PANEL CONTROLS AND THEIR FUNCTIONS D 19 l SCCYTT , . . ,.1 ,r,ntf I tw I JTIEI kkJ . 1 I I. ,1, - lt111p-.,_.,!I 18 17 1) POWER SWITCH Press the power switch to turn the unit on. tThe receier will be ready for operation in 2 to 3 seconds. To switch off the powor, press the POWER switch again. 2) POWER LEVEL INDICATORS Indicates the approximate power output levels that are being delivered to the speakers. 3) OUARTZ-LOCK INDICATOR IOUARTZ LOCK) This indicator illuminates when tuned precisely to an FM or AM stat ion. 4) FM STEREO INDICATOR This indicator automatically illuminates when an FM stereo broadcast is being received. NOTE: It will not illuminate if the FM mode selector is set to the mono position. St MEMORY INDICATOR IMEMO) This indicator illumioates when the memory button is pressed. To preset the memory manually, press the desired preset tuning button while this indicator is illumi- nated lwi1hin approximately 8 secondst. If the memory is preset automatically, the indicator will not illuminate. 6) DIGITAL FREQUENCY DISPLAY The reception frequency of the FM or AM broadcast is selected by using the tuning buttons or the preset tuning buttons is indicated by a digital-type display. 7) CHANNEL DISPLAY 9 The channel number selected by the prescttuning buttons is displ aycd. 3 l l 6 7 8 9 16 15 1413 12 11 8) BAND SELECTOR BUTTONS FM: When this buuon is pressed, broadcast stations within 1he FM irequency ran9e of 87.5 to 108.0 MHz can be received. When a FM stereo broadcast is re ceived, the STEREO indicator fights. AM: When this button is pressed, broadcast stations within Ihe AM frequency range ol 530 to 1620 KHz can be received, 9) FM MODE SELECTOR IFM MODEi This unit automatically switches into the stereo mode when a stereo broadcast is received. Press this button to listen in the monaural mode. The stereo indicator will not iltumioate in the monaural mode. 10) TUNING BUTTONS ITUNINGI If the button is pressed momentarily and then re leas, ed, the frequency will change at intervals of 0.1MHz for FM and l0KHz lor AM. If the button is pressed slightly longer and then released, the sea, system will be activated, If the broadcast signals are weak, it may not be possible to make automatic selection. If this occurs, make the selection manually. 11) TAPE SELECTOR BUTTON Depress this button to playback a pre-recorded tape from a cassette deck. Press