RCA-Victor-Co-Inc-RP-217 电路原理图.pdf

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1、VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION Figure 1Model RP-2I8-I SPECIFICATIONS TURNTABLE SPEED.16 2/3, 33 1/3, 45, or 78 RPM RECORD CAPACITY.Twelve10 inch (1/4 centerhole) Ten12 inch (1/4 centerhole) Ten10 and 12 intermixed (1/4 centerhole) Ten7, 10 and 12 intermixed (1/4 cent

2、erhole) Twelve7 inch (1 1/2 centerhole) 14 CENTERPOST. Not interchangeable with previous models. The Stabilizer arm must be employed when using the 1 1/2 centerpost. STYLUS FORCE (all models except RP-217-3,4) 4 to 7 grams STYLUS FORCE RP-217-3,4.9 to 11 grams POWER REQUIREMENTS.117 volts, 60 cycles

3、 AC, 15 watts Model Stereo/ Cartridge Stylus Turn- Mono 78 MG table RP-217-1.Stereo Ceramic Sapphire-Diamond 12 RP-217-2.Stereo Ceramic Sapphire-Sapphire 12 RP-217-3.Mono Crystal Sapphire-Sapphire 9 RP-217-4.Stereo Crystal Sapphire-Sapphire 9 RP-218-1.Stereo Ceramic Sapphire-Diamond 12 rca Victor RE

4、CORD CHANCER RP-217 Series RP-218 Series (Continued below and on the next 17 pages) GENERAL DESCRIPTION The RP-217 and RP-218 series record changers are four-speed mechanisms designed to play in automatic sequence, 7, 10, and 12 inch records. Manual operation is also provided. Records with 14 inch c

5、enterholes may be intermixed in any sequence of 7 inch, 10 inch and 12 inch diameters. A detachable centerpost is pro vided for playing records having V/2 inch centerholes. The pickup arm is coupled to the mechanism through a friction clutch arrangement which permits handling of the pickup arm in or

6、 out of cycle with out damage to the mechanism. A full 90 lift of the pickup arm is possible for ease of stylus and cartridge replacement. Record separation is accomplished by means of a push-off finger and shelf at the centerhole of the rec ords. The stabilizer arm must be employed for prop er reco

7、rd separation when playing either 14 inch or 114 inch centerhole records. STABILIZER ARM To load or remove rec ords, lift and turn the stabilizer arm off to the side. After loading, place the stabilizer arm so that it rests on the record stack. PICKUP ARM May be handled manually when in MAN” positio

8、n of function con trolthe pickup arm returns to the pickup arm rest and the mechanism shuts off auto matically after playing the last record. PICKUP ARM REST Pickup arm may be pressed down on pickup arm rest for positive holding of the pickup arm. 114 CENTERHOLE SPINDLE Used when playing records hav

9、ing 114 centerholes. STYLUS SELECTOR Slide action lever for selecting 78 rpm or MG stylus. SPEED CONTROL Selects 16%, 3314, 45 or 78 rpm turntable speeds. FUNCTION CONTROL Provides for selec tion of MAN” (manual), SEL” (select), AUT” (automatic), and OFF positions. 136 收音机爱 好者资料库 RadioFans.CN MOTOR

10、TRIP LEVER MOTOR (l9 SPRING INDEX LEVER VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION RCA Victor (Material continued) RP-217 Series, RP-218 Series CONTROLS MOUNTING HOLE /fa) GROMMET TERMINAL (59) BOARD v THREE CONTACT POWER CONNECTOR SELECTOR LEVER SPRING TURNTABLE DRIVE (TV IDLER

11、 WHEEL 1/4 CENTERPOST (i6 POWER WIRING 1 SLEEVING MOUNTING HOLE j GROMMET (20) STABILIZER ARM LANDING ADJUSTMENT (ACCESS HOLE) -(J3) SELECTOR LEVER CONTROL LEVER STUD W OFF-ON SWITCH v) PICKUP arm STYLUS SELECTOR 5) SPEED SELECTOR KNOB ) FUNCTION CONTROL KNOB Figure 3Top View of RP-218 With Turntabl

12、e Removed AUTOMATIC NEUTRAL LINK DETENT LEVER AUTOMATIC NEUTRAL LINK SPEED CONTROL /Gg LEVER GROMMET W- AUTOMATIC NEUTRAL LINK GROMMET ) PUSH-OFF LEVER (58) SPRING MOTOR MOUNTING xTn GROMMET Ly- PUSH-OFF LEVER CYCLING GEAR LEVER Vly- POWER CONNECTOR (GO)- PUSH-OFF LEVER / CYCLING SLIDE CYCLING GEAR

13、TERMINAL BOARD (59) SPEED CONTROL LEVER 5)SPEED CHANGE X LINK (55) CONTROL LEVER 56) CLUTCH LEVER TRIP link CONTROL LEVER REJECT SPRING CYCLING GEAR !y LEVER SPRING SHUT-OFF LATCH SPRING JS) LANDING LEVER JjO) PICKUP ARM LEVER Juh LANDING - ADJUSTMENT /5i) INTERMIX SPRING _ /fiN PICKUP ARM W LATCH L

14、EVER PICKUP ARM LATCH (85) LEVER SPRING SHUT-OFF LEVER SUPPORT LEVER w) INTERMIX SEIECTOR Figure 4Bottom View of RP-218 Mechanism 137 收音机爱 好者资料库 RadioFans.CN VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION (Material continued) RP-217 Series, RP-218 Series RCA. Victor ADJUSTMENTS LAND

15、ING ADJUSTMENT The landing position of the stylus is adjusted by means of an eccentric landing adjustment screw. When adjusted for correct landing on one size record (12 inch preferably), the landing position for each of the other two sizes is automatically established. The landing adjustment screw

16、(44 A) is accessible from the underside of the record changer, or through an access hole provided in the motorboard. Discon nect the power cord from the instrument and place a 12 inch record on the centerpost with the stabilizer in place. Turn the function knob to SEL” and rotate the turntable by ha

17、nd until the record drops and the stylus is poised above the starting grooves of the rec ord. Then turn the landing adjustment screw so the stylus will land on the record midway between the outer edge and the recorded portion. Connect the power and cause the mechanism to go through cycle several tim

18、es while observing the land ing position. Slight touch up” of this adjustment may be neces sary so that the pickup will land correctly for all three record sizes. HEIGHT ADJUSTMENT Two height adjustment screws are provided on the RP-217 and RP-218 series mechanisms. Height adjustment screw (67) on t

19、he cycling slide is adjusted with the mechanism OUT OF CYCLE for a gap of from .065 to .075, (about the thickness of a penny) between the landing lever (44) and the pickup arm lever (54). Height adjustment screw (11) in the pickup arm is adjusted with the mechanism IN CYCLE with the pickup arm at it

20、s full height. Adjust the height ad justment screw (11) so that the stylus is 1 3/16 inches above the turntable mat. These adjustments will prevent the stylus from touching the motorboard out of cycle; and, further, enable the stylus to land properly on a full stack of records. STYLUS FORCE There is

21、 no adjustment provided for stylus force in the RP-217 and RP-218 series record changers. The stylus force for all models except the RP-217-3 and RP-217-4 is 4 to 7 grams. The stylus force for the RP-217-3 and RP-217-4 is 9 to 11 grams. If the stylus force is incorrect, the pickup arm counterweight

22、spring (12) should be checked or re placed. STYLUS REPLACEMENT Removal of the clip-in” stylus assembly and servic ing of the cartridge is facilitated by the full 90 lift provided for the pickup arm. To remove the stylus grasp the stylus selector and pull away from the pickup body by Vs, then pull th

23、e stylus assembly forward and out of the pickup. Figure 7Stylus Replacement 138 收音机爱 好者资料库 RadioFans.CN VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION RCA Victor (Material continued) CYCLE OF OPERATION RP-217 Senes, RP-218 Series NOTE: In the cycle of operation it is assumed the mec

24、hanism has stopped automatically with the pickup arm on the rest. r PRELIMINARY PROCEDURE Lift the stabilizer arm and place a stack of centerhole records (7-10- and 12) on the spindle (intermixed if so desired). Place the record stabilizer arm so it rests on the records. If playing records with IV2

25、centerhole, first place the large centerpost over the regular spindle. Place the record stabilizer arm so it rests on the records. FUNCTION KNOB TURNED TO “MAN” (MANUAL) POSITION 1/4” CENTERPOST STABILIZER ARM , 7” RECORD Figure 8Preliminary Procedure if record . IIf RECORD Control lever (39) moves

26、closing OFF-ON” switch (51), and motor starts. The opposite end of the control lever actuates the automatic neutral link detent lever (41) and through the automatic neutral link engages the drive wheel to the motor shaft. Turntable starts turning. CONTROL LEVER | STUD | . CYCLING GEAR FLANGED END OF

27、 CONTROL LEVER AUTOMATIC NEUTRAL (S) UNK DETENT LEVER W TRIP PAWL LEVER (HA) CONTROL LEVER (39) V/ OFF-ON jiy SWITCH FUNCTION CONTROL KNOB Figure 9Manual Position FUNCTION KNOB TURNED TO “SEL” (SELECT) POSITION Further movement of the control lever (39) (now a lateral motion due to the control lever

28、 stud (40) following the right angle slot in the motorboard) causes flanged end of the con trol lever to strike the tab end of the trip pawl lever (18A). This causes the trip pawl to advance into the path of the projection on the turntable hub. Cycling gear (18) starts rotat ing when the projection

29、on turntable hub arrives to strike trip pawl. SERVICE HINTS Failure to turn on may be caused by bent tab on control lever (39) not engaging switch (31). Binding of knobs or sticking in SEL” position can be corrected by light lubrication of the knob shafts. 139 VOLUME R-23, MOST-OFTEN-NEEDED 1963 RAD

30、IO SERVICING INFORMATION RCA Victor CYCLING STARTS (Material continued) CYCLE OF OPERATION RP-217 Series, RP-218 Series TRIP PAWL CYCLING GCAR LiViB (ffil . fill CYCLING SLIDE As the cycling gear rotates, the cycling slide (17) starts its outward motionthis is ac complished by the pin extending down

31、ward from the cycling gear traveling in the elon gated slot in the cycling slide. During the change cycle, the cycling gear will complete one revolution and the cycling slide will per form one complete excursion (outward and inward; of travel. PICKUP ARM RISES (A) Feeler (49) starts moving out as th

32、e cycling slide (17) continues its outward motion. Fur ther outward motion of cycling slide causes pickup arm lift pin (47) to ride up the in clined portion of the lance on the cycling slide. Vertical motion of pickup arm lift pin causes the pickup arm (8) to rise, and also causes engagement of pick

33、up arm lever (54) with landing lever (44) through the pressure of the rubber surface of pickup arm lever and the metal surface of the landing lever. SERVICE HINTS If cycling fails to start, check condition of trip pawl (18A). If mechanism stalls or slows down in cycle, check for bent or binding cycl

34、ing gear (IS). The lift pin (47) must be free to travel ver tically and the ends smooth and rounded for proper lift of the pickup arm. Failure of the feeler to operate smoothly may be due to screw (97) being too tight. See Fig ures 34 and 33. CLUTCH LEVER AUTOMATIC NEUTRAL LINK DETENT LEVER ll/ Figu

35、re 11Pickup Arm Rises m ) m - Bf- control lever ON SWITCH TRIP LEVER (57 PUSH-OFF /Oi LEVER CYCLING GEAR CONTROL LEVER REJECT SPRING TRIP LINK TERMINAL BOARD INDEX LEVER (jtf). SUPPORT LEVER- SPRING SUPPORT LEVER INTERMIX SPRING (j7 MOUNTING SPRING INTERMIX SELECTOR Partial View of RP-218 With Cycli

36、ng Slide Removed 140 PICKUP ARM LATCH W LEVER SPRING VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION RCA Victor (Material continued) CYCLE OF OPERATION RP-217 Series, RP-218 Series PICKUP ARM RISES (B) Further outward movement of the cycling slide (17) causes pickup arm lift pin (47)

37、 to arrive at the flat portion of lance on cycling slide completing the vertical rise of pickup arm (8). Continued outward movement of the cycling slide causes the vertical tab on the shut-off latch actuator (17C) to contact the tab on the shut-off lever (27). This starts the unlatching of the picku

38、p arm latch lever (46) and the landing lever (44). Continued rotation of the cycling gear causes the vertical tab on the selector lever (43) to contact the triangular tab of the cycling gear (18). This starts the vertical rise of the selector lever. SERVICE HINTS Failure of the selector lever to ris

39、e may be caused by the vertical tab on the selector lever failing to contact the triangular tab. Check for missing springs (87) and (88) if feeler fails to rise from intermix housing. PICKUP ARM MOVES OUT Further rotation of the cycling gear (18) and further outward mo ement of the cycling slide (17

40、) results in the contact of actuator spring (17D) with the pickup arm lever (54) caus ing the pickup arm (8) to start its outward travel. Figure 12Pickup Arm Rises At this time the selector lever (having risen to full upward position) rests on the 7 step of the support lever (45). The feeler (49) re

41、aches its full outward position and is now prepared to sense the diameter of a dropping record. The pickup arm latch lever (46) and the landing lever (44) become fully unlatched at this time. The selector lever continues to rest upon the 7 step of the support lever even after the triangular tab of t

42、he cycling gear has passed the vertical tab extending downward from the selector lever. This is because the support lever is forced against the selector lever by the support lever spring (88). ncnup ARM Figure 14Pickup Arm Moves Out 141 VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION

43、 RCA Victor (Material continued) RP-217 Series, RP-218 Series CYCLE OF OPERATION PICKUP ARM APPROACHES FULL OUTWARD POSITION Continued outward motion of the cycling slide (17) causes the pickup arm lever (54) and the pickup arm (8) to approach full out ward position and finally reach maximum outward

44、 position determined by contact of the upper part of the landing lever eccentric stud (44A) with the throat of the pickup arm latch lever (46). The additional out ward movement of the cycling slide causes actuator spring (17D) to bend back and ab sorb this motion and does not result in any further o

45、utward movement of the pickup arm. At this time the bent tab projecting downward from the cycling gear (18) comes into contact with the push-off lever (42). Figure 15Full Outward Position RECORD DROPS Additional rotation of the cycling gear (18) results in further movement of the push-off lever (42)

46、. This motion results in the movement of the push-off finger in the spindle assembly (16) which causes the record to drop. The feeler (49) senses the record diametera 7 rec ord causes no deflection; a 10 record causes partial deflection; and a 12 record causes full deflection of the feeler. As a res

47、ult of the deflection of the feeler, the selector lever (43) falls to the appropria :e step of the support lever (45), thus establishing the proper height of the selector lever for that record diameter. At this time, full 180 degree rotation of the cycling gear is accomplished and full outward motio

48、n of the cycling slide is reached. PUSH-OFF FIN 1/4* CENTERPC / . SUPPORT LEVER (45, r5 CYCLING GEAR (l8) PUSH-OFF LEVER (5) Figure 16Record Drops 142 VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION RCA Victor (Material continued) RP-217 Series, RP-218 Series CYCLE OF OPERATION PICKU

49、P ARM MOVES IN The cycling slide (17) starts its inward travel as the cycling gear (18) continues its rota tion. The actuator spring (17D) guides the pickup arm back as the landing lever (44) moves toward landing position. (The pickup arm follows the landing lever due to the pressure between the pickup arm lever (54) and the landing lever.) Spring action (86) on the landing lever