Sivertone_4751_manual_schemtic 电路图 维修原理图.pdf

《Sivertone_4751_manual_schemtic 电路图 维修原理图.pdf》由会员分享，可在线阅读，更多相关《Sivertone_4751_manual_schemtic 电路图 维修原理图.pdf（3页珍藏版）》请在收音机爱好者资料库上搜索。

1、SILVERTONE ORGAN OPERATING INSTRUCTIONS: P0WER SUPPLY. . . This organ is designed for operation from I05-I25 volts 60 cps a.c. only. lJever connect to a power suppfy having a different voltage or frequency. lnsert power cord plug into any convenient outlet. Turn Vibrato control on front panel in cf

2、ockwise direction to turn organ on. The pilot f iqht will glow red when the organ is turned on. Allow about 60 seconds for warm up. VIBRATO CONTROL. The Vibrato effect is increased as this control is turned further clockwise. Turning the Vibrato control completely counter-clockwise turns the organ o

3、ff. VO|CING SWITCH . . . This is located on the left side of the front panel. Setting it in the counter-clockwise position makes the organ reproduce a ff ute-like tone. Setting it in the clockwise position makes the organ produce a string-like bright tone. F00T PEDAL . . . The foot pedaf focated at

4、the bottom of the front panel controls the foudness of the unit. Depress pedal to give desired loudness. NORMAL CARE AND MAINTENANCE TUBES. . . Check tubes oncea year or more frequentf y if organ is subject to constant or severe use. V/hen replacing tubes take care to put them in the correct sockets

5、 and see that the base pins are fully inserted. HUM Local conditions affecting your power supply may causea slight hum or noise in the organ. The hum may frequent- ly be eliminated by disconnecting the power cord from the elec- tric outlet and inserting it again rryith the position of the prongs rev

6、erse d. t t- MANUAL SERVICE DATA ond REPAIR PARTS IIST for ta ORGAN ,vtoDEt NO. 4751 GUARANT E E Wc guoronlee the Silvertonc Chord Orgon to be free from defects in molcriol ond workmonship for o period of one (l) ycor from dotc of so lc. Should o dcfcct occur, we will: l. During rhc firsr ninery (90

7、) doys from dolc of sole ol our op- lion, we will either repoir or reploce ond instoll thc dcfcctivc porls or tubes in lhc home, free of chorge. 2. AIe ninety (90) doys ond for thc bolonce of the yeor, we will rcplcce oll dcfective ports ond tubes, chorging only for lobor. This guorontcc does not in

8、clude service necessitoted by domogc duc to mis-use, obusc. improper linc volloge, fire or flood, lighrcn- ing or oihcr ocls of God. SEARS, ROEBUCK & CO. SEARS, ROEBUCK ond C0., U.S.A. ond 5lMPS0N5-SEARS LIMITED (WNERS KEEP HIS BOOKLET. IT CONTAINS VALUABLE SERVICE INF.IRMATION. 收音机爱好者资料库 Ra d i o F

9、a n s .CN TECHNICAt MANUAI DtvtstoN s7 cHASS|S NO. t57.4751O ORGAN AMPLIFIER HOrr TO ORDER PARTS: WHERE TO PLACE ORDER: Replacement parts may be ordered through any Sears, Roebuck and Co. U.S.A., or in Canada, Simpsons-Sears Limited Retail or Mail Order Store. Prices available upon application. ORDE

10、R l. The 2. The 3. The 4. The MUST STATE: Part Nufiber Part Description Chassis N umber Model Number USED IN ,NODEt 47 5l LOCATION OF CHASSIS AND MODEL NUMBERS: The chassis number will be found on a metal plateattached to the chassis. The model number will be found on the cabinet back. t I I L Schem

11、atic Location Part NumberDescription Schematic Part Location NumberDescription RESISTORS .047m1d 350 Volts .l mfd 350 Volts .01 mfd 350 Volts 500mmfd 1000 Volts .02 mfd 350 Volts .022nld 350 Volts 40/40nd 350 Volts electrolytic RI R2, Rg R4 R3 R5, R7 R9 Rt0 Rlt Rl3 Rt4 Rt9 R20 R2r Rl Rl7 Rl2 Rt5 cl,

12、 c4 c2 c5, cl0 c cg, cg clr c7 30-1820-32 220K 30-t820-29 l00K 30-1820-33 270K 30-r820-2s 47K 30-r820-t7 l0K 30-1820-9 2.2K 30-1820-31 t80K 30-1820-40 I mes 30-r820-t 390 30.1820-28 82K 30-1820-46 3.3mes 30-1820-39 820K Foctory selecled 120-270K 30-t82t-l 390 2W t0% 30-.l822-lt 3.3K tW t0% 30-1800-1

13、0 3K pot Cfoper Vibroto with switch 30-1800-20 500K pot Speciol Swell Conf rol 30-1820-35 390K Microphone resistor CAPACITORS RM 40- r340-8 40- I 340- r0 40- I 340- r 40-1342-5 40-1340-2 40- I 340-3 40-t500- I sv2 TI T2 SPKR 33- 1800- I I 3- I 820-2 l5-089 24-1844-6 27-1884-1 22- r 835- r 3r-t83s-t

14、32- I 895- I r0- I 800- I I MtscANEOI.IS PARTS Voicing Swit Power Tronsformer Oulput Tronsformer Speoker Microphone Pilot Lisht #51 Pilot Light & Conrol Assy AC Receptocle Line Chord CABINET PARTS 5l- 1838- I 5l- 1839- I 5l- I 840- I PEDAL ASSEMBLY PARTS Cobinet Music Rock Boffle, Grille Cloth & Ped

15、ol Opening Trim Cobinet Bock Control Knob Corfon Only lnner Pocking 0nly Pilot Light Jewel Music Book Retoiner Strip Owners Monuql Spring Looded Hinge Volume Control Arm with Control Rod Pedol with Mot 5l-t841-t 5l-1842- sl-r843-I 5l- 1844- I 23- I 83- I 5l-1845-t 4751M 28- I 888- I 17-1890-4 30- 18

16、93- r INFORIATION FOR SEARS TECHNICIAN FILING INSTRUCTI0NS: File this page in numercal 0rder in Section A of the Division 57 Radio Technical Manual 6ray Binder Vol. I For current selling pricesr availability and orderng information refer to Division 57 Authorized tuice List 157.00. Port No. 99-4751

17、SEARS, ROEBUCK ond C0. U.S.A. ond S!iPSON SEARS Ll4lTED VIM33 sF57 收音机爱好者资料库 Ra d i o Fa n s .CN c-12 A.B 5Y36AA5A TIT2 ECc83 rl TUBE LAYOUT vzg !tzAY,TA Eccg3 C1 .o+7 *,* 6 NO VIoRATO r.7V c$Ec K IERE vtSqATo 5oVr.r SWELT PEDAL V3 6AQ5 INPUl I I VIA Vz lZNtTA TcT A cl .047 l(* rRtllG sw2 255v I 2.2

18、 I 3 $7K R9 .l c2 270K v .or c5 7 t.2v RI 2ZOK cro .ot toK R5 L L 2w V4 5Yr FILAMENTS PILOf LICHT ONEN swloN vtsRATO eoltfoL 2.2-K R9 tgo K Rlo I MEE Rll q 390 Ofrts 500K R15 R tooK sP. a3K Rr2. 390 or1S Rt3 c7A1Ot4O 4oovc7g K Q4 roK R7 r TI cll .ozL c9 .o2 v 6t( 7 R2l R20 820K ?3 ME R19 VIB t/-|IAQ

19、A ECCB3 NOTES: I. ALL RESISTORS I/1 WAT IJNLESS OTHERWISE NOTED. (TOIOA6*ANCE) X RESISTOR FACTORY SEI-E.CTEU FOR 6.3 CPS 2. VALUES OF CAPACITORS tN MFD UNLESS OTHERWISE NOTED, (IO% TOLERANCE ) 3, VOLTAGES MEASURED FROM POINTS INDICATED TO GROUND WITH VTVM. * IN SOME MOD15 A.O5 MFD CAPACITOR. IS (JSE D INSTEAD SCHEMATIC DIAGRAM OT SILVERTONE CHASSIS NO. o v A.c. 60 cps otr ON .4v 22v vr8ATO VIBR AT O FTUTE I I I l I J a 82K Rl+ c6 600 l, a R2L t5K VIBRA.rO CONTOL 3.3K/2w looK R18 A.c- RECEPTACLE 157.47 5lO 收音机爱好者资料库 Ra d i o Fa n s .CN