SEARS - 5059 SILVERTONE - Mono Phonograph with AM-FM Mono Radio - Instructions, Schematic, Adjustment, Parts List 电路图 维修手册.pdf

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1、P A R T S L I S T AND INSTRUCTIONS FOR INSTALLING AND OPERATING YOUR RADIO WITH AUTOMATIC RECORD CHANGER WHEN ORDERING CHASSIS PARTS OR WRITING US ABOUT THIS RADIO, ALWAYS GIVE THE CHASSIS NUMBER INDICATED ON THE METAL TAG (PICTURED ABOVE) ON THE CHASSIS AND THE CATALOG NUMBER SHOWN ON THE CABINET S

2、TICKER. PLEASE READ THESE INSTRUCTIONS VERY CAREFULLY BEFORE OPERATING YOUR RADIO. THE INSTRUCTIONS TELL YOU: 1 HOW TO INSTALL AND OPERATE YOUR RADIO PROPERLY SO THAT YOU WILL HAVE THE FINEST POSSIBLE RECEPTION. 2 HOW TO KEEP YOUR RADIO IN GOOD CONDITION. 3 HOW TO OBTAIN PROPER SERVICE ATTENTION SHO

3、ULD YOU EVER REQUIRE IT. IF YOU FOLLOW THE INSTRUCTIONS CAREFULLY YOU WILL BE ASSURED OF THE FINE PERFORMANCE AND CONTINUED SATISFACTION BUILT INTO ALL SILVERTONE RADIOS. SEARS, ROEBUCK AND COMPANY KEEP THIS BOOKLET. IT CONTAINS VALUABLE SERVICE INFORMATION IMPORTANT Silvertone RadioFans.CN 收音机爱 好者资

4、料库 INSTALLATION PREPARING THE Do not connect this unit to a power outlet until all shipping items as in- RECEIVER FOR dicated in the illustrations and paragraphs below have been removed. INSTALLATION Remove the two (2) red painted screws inserted at an angle at the rear of the radio chassis. These p

5、arts may be reached through the back of the cabinet. (See illustration below.) Remove the red painted screws and wood block that hold the record changer drawer closed. (See illustration below.) REMOVE RUBBER GROMMET AND LIFT RECORD SUPPORT ARM KNOB REMOVE TURNTABLE SHIPPING SUPPORT TURN(2) HOLDDOWN

6、SCREWS (LARGE ROUND HEAD SCREWS) CLOCKWISE AS FAR AS POSSIBLE REMOVE PACKING REPLACE TURNTABLE RECORD SUPPORT ARM KNOB WHEN MOUNTING PLATE S FLOATING, REMOVE CLOTH TAPE. REMOVE NEEDLE GUARD PREPARING The record changer is floated on spring mountings. For shipping purposes THE RECORD only, these moun

7、tings are made rigid. To float the changer, remove the CHANGER FOR turntable by lifting it straight up the spindle. Turn the two holddown OPERATION screws (identified by large, round heads) in a clockwise direction as far as possible and replace the turntable. Replace the turntable with a clockwise

8、turning motion, making sure that the driver wheel is in position against the inside flange of the turntable. Remove needle guard from pickup cartridge. PAGE 2 R E M O V E TWO WOOD S C R E W S ( PAINTED R E D ) G R E E N LEAD (FROM R E C E I V E R ) B L A C K LEAD (FROM R E C E I V E R ) E X T E R N

9、A L AM ANTENNA CONNECTOR R E M O V E WOOD S C R E W S (PAINTED R E D ) AND WOOD B L O C K BUILT -IN FM ANTENNA CONNECTED H E R E DISCONNECT WHEN USING E X T E R N A L FM A N T E N N A E X T E R N A L FM ANTENNA LEADS ( 3 0 0 OHM L I N E ) LIFT UP PACKING FLAPS REMOVE TURNTABLE RadioFans.CN 收音机爱 好者资料

10、库 It is essential to have the record changer absolutely level. Use a tor- pedo or similar type level on the record changer baseplate. Use ade- quate shims under the radio cabinet to achieve perfect level. CAUTION: REMOVE THE ELECTRIC OR POWER CORD FROM THE WALL OR FLOOR OUTLET BEFORE REPLACING TUBES

11、, REMOVING, ADJUSTING, OR CLEANING THE CHASSIS OR WHILE CONNECTING AN AERIAL WIRE. TUBES The receiver is shipped with the tubes in their proper sockets. See that the tubes are firmly pushed down in their sockets and the tube shield on the 6X8 tube is in place. (See illustration on Page 14). RECORD S

12、ee that theconnectionsfrom the pickup arm and from the turntable motor CHANGER are plugged into their sockets in the radio chassis. (See illustration on CONNECTION Page 14). LOCATION The receiver should be placed on a level surface, convenient to an elec- tric outlet. Do not place the receiver near

13、a radiator or other heater since the cabinet may be damaged. If the receiver is placed against a wall, allow an inch or two of space between the back of the cabinet and the wall. This will insure the best tone quality. POWER SUPPLY The receiver is designed for operation from 105-125 volt, 60 cycle,

14、al- ternating current (AC) supply only. See label attached to the inside of the cabinet. Never connect to a supply having a different frequency or voltage than that specified on the label. ANTENNA This receiver has built into it the Silvertone Radionet aerial system. This special self-contained aeri

15、al system will provide excellent local reception on both the AM (Standard Broadcast) and FM (Frequency Mod- ulation) bands. The receiver is shipped with the built-in FM and AM antennas connected as shown in the illustration on page two. ANTENNA AND For locations where an outside antenna is necessary

16、, a special AM-FM GROUND antenna kit, Catalog No. 6710, is available. This antenna will improve CONNECTIONS reception on both the standard broadcast and frequency modulation bands. FOR UNUSUAL CONDITIONS The antenna board located on the chassis is used for FM antennas and is shipped with the built-i

17、n antenna connected to the screw type terminal. If an external FM antenna is used the built-in antenna lead must be dis- connected and the lead-in from the external antenna connected to these terminals. Use only 300 ohm antenna lead-in wire for this purpose. (See illustration on page 2.) If an outsi

18、de AM antenna is used, connect the lead-in wire to the extra connector furnished on the antenna board. Do not disconnect the leads from the built-in AM antenna. (See illustration on page 2.) This receiver does not require a ground connection. PAGE 3 RadioFans.CN 收音机爱 好者资料库 OPERATION TONE TUNING ON-O

19、FF a VOLUME FUNCTION SWITCH ON-OFF SWITCH Turning this knob to the right switches the receiver on. The receiver AND VOLUME will be in operating condition after approximately 30 seconds necessary CONTROL for warming up. Turning this knob to the left decreases the volume; to the right increases the vo

20、lume. The knob setting should be advanced when searching for stations and then reduced to facilitate accurate tuning after the station has been picked up. When the station has been tuned in properly, the volume control knob should be turned to the point giving the desired volume. Never attempt to re

21、duce the volume by detuning the station with the sta- tion selector knob. Always use the volume control knob. TONE Rotation of the knob to the right modifies the tone, emphasizing the bass CONTROL notes. Rotation of the knob to the left emphasizes the high or treble notes. PAGE 4 STATION Using the d

22、ial pointer as a guide, tune in the desired station by turning SELECTOR the knob until the program has the deepest tone and least amount of back- ground noise. DIAL If the frequency of a desired station is known and you are within its range, it can be tuned in within a degree or two of its correspon

23、ding dial marking. See What to Expect From Frequency Modulation on page 5 of this leaflet. The frequency of broadcasting stations can be usually found in the radio program page of your local newspaper or in a radio log. Standard Broadcast (AM): The lower scale on the dial is read when tuning station

24、s on this band. It is marked in kilocycles (KC) and actual fre- quency (in kilocycles) may be read by adding a zero (0) to any number shown on this scale. Frequency Modulation Band (FM): The upper scale on the dial is read when tuning stations on this band. It is marked in megacycles (MC) and the fr

25、equency (in megacycles) of the stations may be read directly on this scale. FUNCTION Turn the knob to the desired position as indicated by the engraved pointer. SWITCH FM - When the knob is turned to FM, frequency modulated stations can be tuned in. AM - When the knob is turned to AM, standard broad

26、cast stations can be tuned in. PHO - When the knob is turned to PHO, the record changer unit is connected to the radio and phonograph records can be played. See section AUTOMATIC RECORD CHANGER below for details on how to play records. WHAT TO Frequency Modulation, due to the high frequencies used,

27、is not subject EXPECT FROM to the major portion of static and other atmospheric disturbances en- FREQUENCY countered in the regular broadcast (AM) band. Thus, when using FM, MODULATION the receiver is relatively quiet. On FM the broadcasting stations do not ordinarily need to compress the dynamic ra

28、nge of volume as is customary in AM broadcasting, so that the volume range between the loudest and softest passage in FM is greatly increased as compared to AM. In FM also, because of the wider allowable range of audio transmission, in- creased brilliance and tone range is readily noticed resulting

29、in a realism which is not approached in ordinary broadcast bands. You will note when tuning an FM station, that it will be heard over a wider span on the dial than normally experienced when tuning an AM sta- tion. Full clarity of the program can be experienced only if the receiver is tuned to the ce

30、nter of the signal. Mistuning will result in impaired reception and/or distortion of the program. The receiver may be noisy when tuning between stations but this is nor- mal. Be sure to tune in the station so there is the least amount of noise in the background. If noise is still heard when the stat

31、ion is tuned in, this may indicate the need for an outside FM antenna. Generally speaking, Frequency Modulated transmissions are limited by the high frequencies used (88-108 megacycles) to a distance of about 50 miles. Occasionally stations may be heard from greater distances but this is not normal

32、and cannot be depended upon for consistent entertain- ment. The exact distance will vary depending upon the terrain and the power of the station. AUTOMATIC RECORD CHANGER This Intermix Record Changer is designed to automatically play standard 78 RPM, fine-groove 45 RPM, and long play 33-1/3 RPM reco

33、rds of standard commercial dimensions. Records up to 12 in diameter can be played manually. The changer will automatically play as many as ten-12, twelve-10, or any assortment of ten-12 and 10 records intermixed. However, only intermix records of the same type - either standard (78 RPM) or long play

34、 (33-1/3 RPM). PAGE 5 A full stack of twelve-7 33-1/3 RPM long play records, a full stack of twelve-7 45 RPM fine-groove records (with proper adapter inserted in the record) or a full stack of twelve-7 78 RPM records (childrens records) with lead-in and finishing grooves will also automatically play

35、 on this changer. The changer shuts off after the last record has been played. Any childrens records and home recordings which do not have lead-in and finishing grooves must be played manually. LOADING THE 1. Lift up on the record support RECORDS FOR knob until it clears the spindle AUTOMATIC and sw

36、ing it to the left. 2. Carefully place the records on the spindle and lower them to the off-set shoulder. Steady the records with one hand and re- place the record support over the spindle. Gently push down on the record support knob un- til the records are held parallel with the turntable. 3. The r

37、ecord to be played first should be at the bottom of the stack; the second record to be played next, etc. The side of the record to be played should face upward. PAGE 6 RECORD SUPPORT ARM - SPINDLE -PICKUP ARM RECORD SUPPORT KNOB TURNTABLE ON-OFF-RE J. CONTROL -MOTOR SPEED CONTROL PAGE 7 TO PLAY Moto

38、r speed control knob must be in the 78 position. A stack of 10 STANDARD and 12 standard records (78 RPM) may be intermixed. RECORDINGS (78 RPM) TO PLAY LONG- Motor speed control knob must be in 33 position. A stack of 10 and PLAY (33-1/3 12 long play records (33-1/3 RPM) may be intermixed, or a full

39、 stack RPM) RECORDS of 7 long play records (33-1/3 RPM) may be played. TO PLAY FINE- Motor speed control knob must be in GROOVE (45 RPM) the 45 position. Your fine-groove RECORDS 45 RPM records are manufactured with a 1-1/2 spindle hole. Because of this it is essential before play- ing these records

40、 that a record ad- apter be inserted (as shown in the illustration) in each 45 RPM record to be played. A full stack of 7 fine- groove (45 RPM) records may be played. STARTING THE The pickup arm should be in place on the pickup arm rest. MECHANISM 1. Turn the radio on and set the SELECTOR switch to

41、PHO position. 2. Turn the changer control knob clockwise (to the right) to REP and release it. This will release the bottom record from the stack and will cause the pickup arm to come to its proper position on the record and start playing. When the record is finished, the mechanism will automaticall

42、y lift the pickup arm and drop the next record into po- sition for playing. When the last record is played, the mechanism will automatically shut off. Note: If when the line cord is first connected to an AC outlet, the turn- table does not revolve and the On-Off-Reject control cannot be turned to it

43、s On position it will be necessary to rotate the turntable in a clockwise direction by hand until the pickup arm is on its rest. TO REJECT A To reject a record you dont want to listen to, turn the changer control RECORD knob REJ and release it. This will lift the pickup arm from the record and drop

44、the next record into position for playing. TURNING OFF To turn off the changer before the last record has been played, turn the changer control knob to OFF, lift the pickup arm from the record and place it on the rest. TO REMOVE Lift and turn the record support arm to the left. Lift the records from

45、 RECORDS the turntable. MANUAL To play records one at a time as OPERATION with an ordinary phonograph: 1. Lift up on the record support knob until it clears the spindle. Swing it to the left until the pin in the shaft drops into the lo- cating groove. 2. Place the record on the off-set shoulder of t

46、he spindle and tilt it toward the back of the pickup arm (A). This will guide the push-off finger into the center hole of the record. Pull the record (B) so the center hole is over the main part of the spindle. The re- cord can now drop to the turntable (C) and be played in the usual manner. 3. Turn

47、 the changer control knob to ON. With no records on spindle and record support in position illustrated, turn changer control to REJ 1*. Allow changer to automatically shut off. Do not turn past ON. Changer is now in manual - to resume automatic playing, turn control to RET 1. 4. Place the needle in

48、the starting grooves of the record. TONE AND VOL- The tone and the volume controls will affect record reproduction and vol- UME CONTROLS ume in the same manner as for the radio. CARE OF To insure long life for your records requires only slight effort. Do not RECORDS expose them to heat from the sun

49、or from nearby stoves or radiators. Store them preferably in albums, but in any case keep them always in a cool, dry place, resting vertically. Remove dust and dirt, using a soft cloth and a light circular motion. SUGGESTIONS When loading and unloading the changer use care to prevent bending of spindle. Records should not be left on the spindle except during operation of changer. Records will warp. When machine is not in use, it is sug- gested that the Motor Speed control