RCA-Victor-Co-Inc-930409 电路原理图.pdf

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1、MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS L rcaVictor 930409 SERIES Automatic Record Changer A Service Data The material covering RCA Series 930409 Record Changers is presented on pages 105 to 116, inclusive. SPECIFICATIONS Turntable speed 33/jf 45 or 78 r p.m. Record capacity Up to 14 seven-i

2、nch or 12 ten-inch or 10 twelve-inch or 10 ten and twelve-inch intermixed 930409-3 115 v 60 cycle motor convertible to 50 cycles. Ceramic pickup Stock No S-5652 930409-4 115 v 25 cycle motor Ceramic pickup Stock No 162A001 Used in Model 35QU. 930409-5 115 v 60 cycle motor Crystal pickup Stock No 754

3、75 Used in Models 2ES3, 2ES31, 2ES38, 2ES38E, 2JS1, 2JS1E, 2S10 2US7, 21T197DE, 21T242 and 21T244 930409-6 115 v 60 cycle motor convertible to 50 cycles Ceramic pickup Stock No 162A001 Used in Models 2ES31Q, 2ES38Q, 2JS1Q and 35QU 930409-9 230 v 50 cycle motor convertible to 60 cycles Crystal pickup

4、 Stock No 75044 930409-10 Same as 930409-5 except light color Used in Models 2S10 2US7 and 21T242 930409-11 115 v 50 cycle motor convertible to 60 cycles Crystal pickup Stock No 75475. Used in Model 2US7 Lubrication Stylus Replacement Record Stabilizer Arm 50 60 Cycle Conversion Adjustments Cycle of

5、 Operation Exploded View of Mechanism Replacement Parts CONTROLS The record changer has a dual control on ths motor- board and a stylus selector control on the pickup arm The inner control (circular knob) is the OFF-ON-REJECT control Turning this knob to the center position energizes the motor and s

6、tarts the turntable when turned to the right (clockwise) it starts the mechanism into complete automatic operation The mechanism will shut off automatically after the last record has been played but can be Bhut off manually by turning this knob to the left (counter-clockwise) The outer control (doub

7、le ended lever) is the speed control It has three normal positions, 33, 45, 78 to select the turntable speed desired and a neutral position (midway between 45 and 78) The control should be turned to this neutral position if the changer is not expected to be in use for an extended period of time The

8、stylus control has two normal positions (right and left) and one shipping position (lever pointing up). When playing 33*/$ or 45 r p m records the lever is turned so that 33-45 is visible on the TOP of the lever, likewise for 78 r p m records 78 should be visible on the TOP The removable centerpost

9、is for use with 45 r.p m records having the large centerhole It must be placed over the center spindle with the RCA trademark monogram FACING to the FRONT When not in use it is placed in a well at the front of the motorboard To load or remove records, the record stabilizer is lifted and turned off-s

10、ide. After loading it is turned to the center where it rests on top of the stack of records Controls ios 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS 930409 Series STOP ARM 56 RCA, continued CYCLING GEAR- 130 CYCLING SLIDE* 14 I STOP LEVER IIS ,MUTING SWITCH 94 ICKUP ARM L

11、EVER 124 TRIP SLIDE 139 OWER SWITCH 110 Figure 1Bottom View LUBRICATION The mechanism is properly lubricated when it leaves the factory, additional lubrication should not be necessary for a long period of time If the mechanism has unusual use or high operating temperatures, it may be necessary to lu

12、bricate more frequently. It is suggested to use Lubriplate or STA-PUT No. 512 on 1 Pickup arm pivot 2 Points of sliding contact with cycling slide, incitiding a elevating rod b lift arm C. roller on cycling cam d pickup arm return lever e pickup arm lever 3. End of selector lever contacting tab on c

13、ycling gear. 4 Turntable thrust bearing 5 Sparingly on a trip slide 6. All points of sliding contact Apply a small quantity of light machine oil to: 1. Tnp pawl pivot 2 Cycling engagement pawl pivot 3 Bearing of record stabilizer 4 Elevating rod 5. Bearing of lift arm. 6. Bearing of reject lever. 7.

14、 Bearing of stop lever 8 Bearing of cycling gear. 9. Motor bearings NOTE Keep oil or grease away from all rubber parts. 106 Stylus Replacement PICKUPS NO. 75044 and S-5652 The styli are held in position by small thumb nuts (one for each stylus) Loosen the nut to remove stylus. PICKUP NO 75475 The st

15、yli are held in position by small hex nuts (one for each stylus) Remove the nut and push threaded end of stylus through the cartridge PICKUP NO. 162A001 The styli are held in position by pressure fit To remove stylus, grip with tweezers and pull straight to the front of pickup CAUTION: The internal

16、element of the pickups can be fractured by use of excessive force It is advisable to grip stylus with pliers instead of holding pickup case while removing nuts Although the 78 and the 45-33/3 styli are mechanically interchangeable, they should be replaced in such manner that the stylus which is code

17、d red will contact the record when 33-45 on the stylus selector knob is visible from the top. Record Stabilizer Arm Two types of stabilizer arms are in use Type A when raised and moved outward will remain projected beyond the edge of the motorboard. Use Stock Number 76941 (plum) or Stock Number 7694

18、2 (beige) record stabilizer housing Type B when raised and moved outward will return to within the edge of the motorboard Use Stock Number 77256 (plum) record stabilizer housing, and Stock Number 77257 record stabilizer return spring The replacement stabilizer arm (plum) Stock Number 77255 can be us

19、ed with either Type A or Type *B 50/60 Cycle Conversion Models 930409-3 and 930409-6 are made for 60 cycle operation but may be converted to 50 cycle operation. Models 930409-9 and 930409-11 are made for 50 cycle operation but may be converted to 60 cycle operation To convert the above listed models

20、 it is necessary to remove the original spring sleeve from the motor shaft and install the alternate spring sleeve (in envelope attached to record changer). This is easily accomplished by holding the rotor of the motor while removing or installing the spring sleeve with a twisting motion 收音机爱 好者资料库

21、RadioFans.CN MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS RCA, continued 930409 Series LANDING ADJUSTMENT Only one landing adjustment is necessary. The landing position of the stylus is adjusted by means of the eccentric stud (20A), mounted on the pickup arm support brticket. When adjusted for co

22、rrect landing on one size of record, the landing position for other sizes of records is automatically corrected. STYLUS FORCE ADUSTMENT 17 HEIGHT ADJUSTMENT PICKUP ARM HEIGHT ADJUSTMENT The pickup arm height during cycle is adjusted by means of the hex head screw (17), located in the pickup arm Turn

23、 control knob to REJ and rotate turntable by hand until arm has risen to its maximum height Adjust screw so that stylus is 1% above turntable. 20 A LANDING ADJUSTMENT STYLUS FORCE ADJUSTMENT Stylus force should be 7V4 to 9V4 grams. Loosen screw (14), and move slide until the correct force is obtaine

24、d TRIPPING The tripping method used in this mecha; sm is a combina tion of velocity and fixed diameter. Velocity tripping is ef fective between (14 and 3(4 diameters, when the stylus moves inward */g or more per revolution of the turntable. No adjustment is required. Figure 2Adjustments 89 TWELVE IN

25、CH INDEXING LEVER PICKUP ARM RETURN LEVER SPRING - 118 CYCLING GEAR I 130 Figure 3 Slide Assembly 0Complete) MUTING SWITCH 94 CYCLING SLIDE 141 ESCAPE LEVER SPRING - 140 IFT ARM 100 TRIP PAWL 131 PICKUP ARM RETURN LEVER 120 figure 4 Slid Assembly (View svith Slid, Removed) PICKUP ARM LEVER 124 收音机爱

26、好者资料库 RadioFans.CN MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS 930409 Series CYCLE OF OPERATION RCA. continued TURN ON-OFF-REJECT CONTROL KNOB TO REJECT POSITION and, as it moves horizontally, it pushes the slide against die tension of the slide return spring (27). A projecting pin (24C) on the

27、bottom of the slide engages both shelves and both knives and forces them to turn on their pivots. The shelves are pivoted near their center and are caused to retract as the slide is forced to move by the push-off finger. The knives are pivoted at their ends and are forced outward at the same time th

28、at the shelves are retracted. A formed spring (28) returns the shelves to the extended position. STOP.* LEVER IIS Figure 19 120 PICKUP ARM /RETURN LEVER HU? HI1 STOP LEVER 115 POWER / II m STOP LEVER H 111 / SLIDING OFF ! IA1 l ESCAPE LEVER Figure 20 Figure 23 SEPARATORV /SEPARATOR SMFt F SHELF Figu

29、re 24 SEfPRATCR KMFE Ill MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS RCA, continued REPLACEMENT PARTS 930409 Series ILL. STOCK NO. NO. DESCRIPTION StabilizerRecord stabiliserplumcomplete with plastic cap for 930409-3, -4, -5, -6, -9 and -11 StabiliserRecord stabiliserbeigecomplete with plastic c

30、ap for 930409-10 CapPlastic capmaroonfor record stabiliser for 930409-3, -4. -5, -6, -9 and -11 CapPlastic capbeigefor record stabiliser for 930409-10 TurntableTurntable and hub assemblymaroon flock. TurntableTurntable and hub assemblytan flockfor 930409- 10 Nut Vi 28 hes nut (jam) for pickup arm br

31、acket Lockwasher V4 external type lockwasher for pickup arm shaft HousingRecord stabiliser housingplumType A* (see Page2) for 930409-3, -4, -5, -6, -9 and -11 HousingRecord stabiliser housingplumType “B” (see Page 2) SpringRecord stabilizer return spring for use with Type ”B” record stabilizer housi

32、ng HousingRecord stabiliser housingbeigefor 930409-10 MotorboardMotorboardcomplete EmblemRCA Victor” emblem Screw#10-24 x % binding head machine screw and internal lockwasher HousingPickup arm pivot shaft housingplum for 930409-3, -4, -5, -6, -9 and -11 HousingPickup arm pivot shaft housingbeige for

33、 930409-10 KnobReject control knob and shaftmaroon for 930409-3, -4, -5, -6, -9 and -11 KnobReject control knob and shaftbeigefor 930409-10 RestPickup arm rest (maroon) for 930409-3, -4, -5, -6, -9 and -11 RestPickup arm rest (beige) for 930409-10 KnobMotor speed control knob and shaft Screw#6-32 x

34、Vi hex head screw WasherC” washer to mount record stabiliser ClampCable clamp ScrewScrew for mounting cable clamp Screw#10 x V4 cross recessed pan head screw to mount pickup arm rest Screw#6-32 s Vi* hex head screw RodMotor speed control rod GrommetRubber grommet for motor speed con trol rod LeverMo

35、tor speed control lever Rod“On-Off” Reject” rod Washer”C” washer for motor speed control knob and shaft LeverSwitch control lever NutPal nut for reject control knob and shaft ArmStop arm assembly SpringReturn spring (coil type) for stop arm (/* I.D. x 19/32) Screw6-32 x 5/16* cross recessed round he

36、ad screw WasherC” washer to mount motor SpringSpring for 45 r.p.m. centerpost housing hinge pin Lid45 r.p.m. centerpost housing lidmaroonfor 930409-3, -4, -5. -6, -9 and -11 Lid45 r.p.m. centerpost housing lidbeigefor 930409-10 Housing45 r.p.m. centerpost housing well lesslid and rubber bumper Screw

37、#10-32 x 3/16* cross recess pan head ecrew to mount 45 r.p.m. centerpost housing PinHinge pin for 45 r.p.m. centerpost housing lid Bumper45 r.p.m. centerpost housing rubber bumper Screw#10-24 x Vi binding head machine screw and internal lockwasher 45 RPM CENTERPOST ASSEMBLY CapNose cap SpringNose sp

38、ring (formed) Screw#4-40 x Vi cross recessed binding head screw for nose spring PlateSlider plate assembly complete with springs 24A KnifeRecord separator knife (1 set) ShelfRecord support shelf (1 set) SpringSlider return spring (coil type2 in 1) SpringShelf return spring (formed) BodySpindle body

39、assembly Screw #4-40 x % fillister head screw for nose cap RotorDie-cast rotor SpringRotor .lift spring (coil) (1.169* O.D. x 1 4-5 turns) LiftRotor lift BearingBottom bearing HU ft - Fig. 264$ r.p.m. Centerpost Assembly 113 MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS RCA REPLACEMENT PARTS (Cont

40、.) 930409 Series ILL. STOCK NO. NO. DESCRIPTION MOTOR ASSEMBLIES Motors stamped: 8046 for 930409-3 113 76909 RetainerSwitch cover retainer (flat) 114 73314 SpringReturn spring (coil type) (.128* O.D. x 7/16* 115 78313 14 turns) LeverStop lever 116 77288 StripBearing strip for stop lever shaft 117 73

41、812 NutSpeed nut for mounting stop lever bearing 116 75844 shafts SpringPickup arm return lever spring (coil) 119 75849 (.583* O.D.3*4 turns) WasherFibre washer for pickup arm pivot shaft 120 75849 LeverPickup arm return lever 121 75860 RetainerRetaining ring for pickup arm return 122 76952 lever Nu

42、tElevating rod adjustment nut 123 76951 RodElevating rod 124 75845 ShaftPickup arm pivot shaft and lever 128 76906 SpringThrust spring (conical) for elevating rod 128 77269 RingRetaining ring 127 75397 WasherC washer 128 76309 SpringTrip pawl spring 129 77250 PawlTrip pawlupper 129A 77249 SpringTrip

43、 pawl cushion spring (eoil) 130 75858 GearCycling gear complete with shaft and en- 131 75833 gagement pawl 130A PawlTrip pawllower 132 76900 BumperRubber bumper for 10* indexing lever 133 76901 Lever10* indexing lever 134 73314 SpringReturn spring (coil type) (.128* O.D. x 7/16* 135 14 turns) Washer

44、Metal washer (steel) (1/32* x 7/16* O.D. 135 x .140) Screw#6-32 x *4* hex head screw 137 78862 LinkControl link 135 75397 WashorC washer 139 75860 SlideTrip slide 140 78861 SpringEscape lever spring (coil) (.120* O.D. x *4* 141 75856 21 turns) SlideCycling slide and cam aseemblyless escape 142 77228

45、 lever spring SprinoStabilising spring (coil) for cycling slide 143 (.146* O.D. x %*14*4 turns) Screw#6-32 x *4* hex head screw 144 75872 PlateBearing plate for cycling slide 145 76897 WasherMetal vfrasher (brass) for cycling slide 146 Screw#6-32 x *4* hex head screw - J Fig. 28Motor Aaembly MANUAL

46、OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS 930409 Series REPLACEMENT PARTS (Cont.) RCA ILL. STOCK ILL. STOCK NO. NO. DESCRIPTION NO. NO. DESCRIPTION 7 76949 ArmPickup arm shell (plastic) for 930409-5, -10 PICKUP ASSEMBLIES and -11 For 930409-3 and 930409-9 7 100A001 ArmPickup arm shell (plastic) for 9

47、30409-3, -4, 10 S-5652 PickupCramic pickup complete with two styli 7A 76948 ScrewPickup arm mounting bracket pivot screw 10 PickupCrystal pickup complete with two styli 7B 76947 BearingPickup arm mounting bracket pivot bearing 10A StylusOsmium tip stylus and holder (.003 r., 6 75606 CableThree (3) w

48、ire pickup cable complete with connectors for 930409-5, -10 and -11 10B StylusOsmium tip stylus and holder (.001 r., coded red) for 45-33% r.p.m. 8 163A001 CableThree (3) wire pickup cable complete with connectors for 930409-3, -4, -6 and -9 10C 75274 NutKnurled nut to mount stylus 9 Screw#4-40 x Vs

49、 fillister head screw to mount pickup cartridge PICKUP ASSEMBLIES 11 76957 SwivelPickup cartridge mount and swivel For 930409-4 and 930409-6 assembly for 93U4UU-5, - 1U and -11 10 162A001 PickupCeramic pickup complete with two styli u 130A001 10A 490B001 StylusOsmium tip stylus (.003 r. uncoded) for 78 r.p.m. StylusOsmium tip stylus (.001 r., coded red) for 45