RCA-Victor-Co-Inc-RP-199 电路原理图.pdf

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1、VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION rca Victor Model RP-199 Slide-O-Matic DESCRIPTION The RP-199 Side-O-Matic mechanism is a 45 rpm single play record player which is operated by simply sliding a record through a slot in the cabinet and then raising the play control. Rais

2、ing the play control starts the turntable rotating and automatically permits the pickup stylus to set on the record. Since the pickup arm is not accessible it is almost impos sible to get out of adjustment The mechanism will stop automatically after the selection has been played and the record can e

3、asily be withdrawn. Should a person wish to stop the mechanism while in oper ation. simply push in on play control; withdraw the record after play control drops down. The mechanism is made up of a lower and upper subassem bly, The lower subassembly is provided with a power switch mounting bracket, p

4、ickup arm mounting bracket, pickup arm lever and a binged support for the upper sub- assembly The upper subassembly provides the necessary facilities to mount the drive motor, turntable, idler wheel, trip lever, reject lever, latch, bumper, record stop and guides The turntable is driven by a convent

5、ional idler wheel as sembly which gives additional speed reduction by coupling together two rubber drive wheels of different diameters* ADJUSTMENT Tripping Adjustment The mechanism is provided with a tripping adjustment screw that should be adjusted so the mechanism trips when the stylus is approxim

6、ately 1 Va from the edge of the record center hole. Pickup Inward Travel Limit The inward travel of the pickup stylus should be limited to 1 3/16 from the edge of the center hole, so the stylus can not enter the record label area. This limit is governed by bending of a metal tab Landing Adjustment T

7、he contact between the pickup arm lever and a metal tab extending upward from the lower subassembly, limits the outward travel of the pickup arm. This outermost position coincides with the landing position of the pickup Bend the tab so the pickup stylus lands approximately 2Vb from the record center

8、 hole (Halfway between the outer edge and the recorded section of a standard record). Pickup Height Adjustment The pickup height should be adjusted so the pickup raises approximately Vs vhen raising the play control to move the record into playing position. Adjust to desired height by bending of a m

9、etal tab. TRIPPING INWARD TRAVEL INWARD TRAVEL LIMIT LIMIT ADJUSTMENT BEND TAB) IDLER WHEEL UPPER SUB-ASSEM. At 24 RUBBER BUMPER 46A TURN TABLE II RECORD GUIDE 24A RECORD STOP (pi part of item 24C RECORD STOP 24B TRIPPING ADJ.9 LATCH PICKUP ARM MOUNTING BRACKET 46D REJECT LEVER 24E REJECT LEVER LOWE

10、R SUB-ASSEMBLY 46 RETURN SPRING 25 TRIP LEVER 21 PICKUP ARM COUNTER- . BALANCE (/ SPRING 3 PICKUP ARM LEVER 7 PICKUP ARM STOP TERMINAL (port of item 24C) BOARD 46B Continued on the next for pages. 126 收音机爱 好者资料库 RadioFans.CN VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION RCA Victor

11、Model RP-199 Record Player (Continued) CYCLE OF OPERATION Inserting Record Slide a record over the turntable (thru slot in cabinet) until the record touches the stop, at which time the rec ord will set on the turntable correctly. Starting Mechanism Raise the play control (38) that is mechanically co

12、n nected to the upper subassembly; the upper subassem bly (which is pivoted at the rear of the lower subassem bly) raises with it. This action causes a small arm ex tending from the bottom of the upper subassembly to actuate the power switch and start the turntable ro tating. As the play control is

13、raised up, the record on the ro tating turntable gently meets the pickup stylus in the starting groove and the record starts playing. When the play control is raised fully the upper sub- assembly becomes latched in the up position. Record Plays As the record plays, the pickup arm moves inward and th

14、e pickup arm lever (7) contacts and gradually rotates the trip lever (20) inward toward the turntable. PICKUP ARM MOVES THE TRIP ADJUSTMENT SCREW ON PICKUP ARM LEVER ACTUATES TRIP LEVER Mechanism Trips When stylus has moved into finishing grooves of record, the trip lever has rotated sufficiently to

15、 make contact with the trip finger extending from the bottom of the ro tating turntable. As the two meet, considerable force is transmitted from the rotating turntable to the trip lever. As a result the reject lever (coupled to the trip lever) is actuated and the latch, holding the upper subassembly

16、 in the up position, is released. Mechanism Stops Automatically When the latch is released and the upper subassembly drops, the turntable and record drop away from the pickup stylus. At this time the power switch lever actu ates the power switch and the mechanism stops. The pickup arm is returned to

17、 its outermost position (landing position) as a result of a slight push derived from the reject lever return spring directing a force through the trip lever and pickup arm lever assemblies. There is however a tendency for the pickup arm to re turn to its outermost position because of its weight dis

18、tribution and its slightly forward tilt. Remove Record Simply pull the record forward out of the slot in the cabinet to remove it from the mechanism. 127 收音机爱 好者资料库 RadioFans.CN VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION 收音机爱 好者资料库 RadioFans.CN VOLUME R-16, MOST-OFTEN-NEEDED 195

19、6 RADIO SERVICING INFORMATION RCA Victor Model RP-199 Record Player (Continued) REPLACEMENT PARTS ILL. STOCK No. No. DESCRIPTION WasherRetainer, “C washer for hori zontal pickup arm shaft ArmPickup arm complete with pickup retainer spring. SpringPickup arm counterbalance spring ScrewAllen set screw

20、for pickup arm horizontal mounting shaft Cable2 conductor pickup cable complete with contacts ShaftPickup arm horizontal mounting shaft LeverPickup arm lever SpringLock spring for tripping adjust ment screw ScrewTripping adjustment screw PickupCrystal pickup cartridge complete with stylus HardwareWa

21、sher and nut to mount sap phire assembly StylusReplacement sapphire stylus and holder for crystal pickup TurntableTurntable complete with shaft WasherFlat washer for turntable shaft Washer“C washer for turntable shaft SpringRetainer sleeve for idler wheel WasherRetainer washer for idler wheel Washer

22、Flat washer for idler wheel (fiber) (2 Reqd) WheelIdler wheel SpringTrip lever return spring Washer”C“ washer for trip lever shaft WasherFlat washer for trip lever complete Ill. Nos 29 & 34 SpringIdler wheel carriage assembly LeverTrip lever Motor Assembly105/125 volts, 60 cycle tension spring Plate

23、Upper subassembly plate complete with Ill. Nos: 24A, 24B, 24C, 24D, 24E GuideRecord guide StopRecord stop BracketPickup arm bracket LeverIdler lever assemblycarriage for idler wheel ILL. STOCK No. No. DESCRIPTION LeverReject lever SpringReject lever return spring ShaftShaft for play control & latch

24、as semblies Washer“C“ washer retainer for latch as sembly shaft (4 Reqd) WasherFlat washer over motor mount ing grommet (3 Reqd) GrommetRubber motor mounting grom met (3 Reqd) LatchLatching assembly (Play Control) Washer“C washerretainer for latch assembly #32 WasherFlat washer for latch assembly Le

25、verLatch lever to hold upper sub- assembly in play position SpringPlay control tension spring PlateMotor mounting plate WasherMotor mtg. washer rectangular hole (3 Reqd) NutSpeed nut for mounting motor as sembly to upper subassembly NutHex nut for mounting motor to motor mounting plate (3 Reqd) Lock

26、washerLockwasher for securing mo tor hex nuts (3 Reqd) ScrewSelf tapping screw for mounting hinge plate PlateHinge plate for upper subassembly InsulatorSwitch cover SwitchPower switch complete with in sulator (41) and rivets (43) RivetSwitch mounting ShaftPickup arm vertical mounting shaft BearingTh

27、rust bearing for pickup arm vertical mounting shaft PlateLower subassembly plate complete with Ill. Nos 41, 42, 43. 46A, 46B, 46C BumperRubber bumper to cushion land ing for upper chassis BoardTerminal board for resistor and pickup cable assembly SERVICE HINTS Fails To Trip 1. Trip adjustment improp

28、erly set 2. Limit tab bent out too iar 3. Bind in trip slide 4. Defective trip lever 5. Bind in latch bearing 6. Burrs on latch BEARING MAY BINO TRIP FINGER ON TURNTABLE MUST CONTACT AND PUSH TRIP LEVER TO START CHANGE -CYCLE THERE MAY BE EXCESSIVE FRICTION IN BEARINGS TRIPPING ADJ. MAY BE IMPROPERL

29、Y SET LIMIT TAB MAY BE BENT OUT TOO FAR MAY HAVE BURRS AND JAM MECHANISM (Continued on the next page) wayEemnLdEVER 129 VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION RCA Victor Model RP-199 (Continued) SERVICE HINTS (Continued) Incorrect Landing 1. Outward travel limit tab bent to

30、incorrect position 2. Excessive iriction in ver tical bearing oi pickup arm 3. Thrust bearing may be out oi place 4. Counterbalance spring touches pickup arm mounting bracket TAB GOVERNING PICKUP ARM / OUTERMOST / POSITION MAY BE IMPROPERLY SET (BENT). PICKUP HEIGHT ADJ. / MAY BE SET TOO HIGH = BEAR

31、INGS FRICTION 5 MAY BE EXCESSIVE ifEND OF COUNTER- I ,|D BALANCE SPRING l/i MAY TOUOH TOP OF BRACKET V* SET-SCREW MAY BE J LOOBE OR PICKUP ARM | LEVER ASSEMBLY MAY i BE MOUTED TOO HIGH OR TOO LOW. PICKUP ARM LEVER cTHRUST BEARING MAY BE OUT OF PLACE. Wow and Slow Speed 1. Grease or oil on idler whee

32、l 2. Bind in idler wheel carriage 3. Bind in turntable bearing 4. Insufficient tension in idler carriage spring 5. Excessive stylus pressure GREASE ON RUBBER IDLER WHEEL TIGHT TURNTABLE BEARING BINDING IDLER WHEEL CARRIAGE INSUFFICIENT TENSION DEFECTIVE MOTOR WOW MAY ALSO BE CAUSED BY TOO MUCH STYLU

33、S PRESSURE. (THIS WILL CAUSE PREMATURE RECORD WEAR) Skips Grooves 1. Bind in pickup shait 2. Height adjustment tab bent up too high 3. Stylus guard bent down too far 4. Pickup arm vertical pivot set too high (counterbalance spring touches bracket) STYLUS GUARD MAY BE BENT DOWN PICKUP HEIGHT AOJ. y M

34、AY BE SET TOO HIGH = PIVOTB MAY BIND END OF COUNTER BALANCE SPRING MAY TOUCH TOP OF BRACKET SET-SCREW MAY BE LOOSE OR - PICKUP ARM LEVER ASSEMBLY MAY BE MOUNTED TOO HIGH OR TOO LOW PICKUP ARM LEVER Play Control Will Not Latch 1. Bind in trip slide 2. Trip slide tension spring missing 3. Bind in latch pivot THERE MAY BE A BIND IN THE LATCH PIVOT MAY BIND REJECT LEVER TENSION SPRING MAY NOT HAVE SUFFICIENT TENSION. 130