Pioneer-PL51A-tt-sm电路图 维修手册.pdf

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1、SERIrICE MANIIAL STEREO TURNTABLE ,rt ,I j PL-5IA KUT ., I , l ,l ()rrroNEEFu Bobsworld3000 RadioFans.CN 收音机爱 好者资料库 PL-5IA CONTENTS 1. SPECIFTCATTONS . . 2. OPERATION.i. . 3. PRINCIPLE OF MOTOR OPERATION. . 4. ADJUSTMENT 5. EXPLODED VNEWS AND PARTS LIST 5.1 Facking . 5.2 Mechanism. . 6. SCHEMATIC DI

2、AGRAMS, P.C. BOARD PATTERN AND PARTS 6.1 Schmatic Diagram . . 6.2 Power Supply Circuit Assembly (KWR-030) . . . LI ST .4 .5 .6 .7 .8 . l,| . 16 .17 RadioFans.CN 收音机爱 好者资料库 1. SPE CtF|CAT|ONS PHONO MOTOR AND TURNTABLE Motor. . Dcservomotor Speed . Two speeds: 33-1/3 rpm, 45 rpm Wow and flutter . . .

3、. 0.05% (WRMS) or less S/N . . . 58dB or more (in case of using Pioneer cartridge model PC.50) Turntable platter. 3lcm diam, Aluminum-diecast alloy TONEARM Tonearm type. . . . . Static balance, S-shapq, pipe arm Effective arm length 221mm Tracking error *3o-1o Overhang 15.5mm Usable cartridge weight

4、 . . . . 49 (min)-l4g (max) SUBFUNCTIONS Large-size shock absorbers Anti-skating force control Lateral balance weight Oil-damping arm elevator H inges ( F ree-adjustable) Speed fine adjusters (33-1/3rpm.45rpm: for use in turntable speed adjustment with stroboscope and strobolight) OTHERS Power requi

5、rements AC. 120V,60H2 Powerconsumption. . . . . 5.2W(max) Outerdimensions. 480(W) x410(D) xt85(H)mm 18-718(W) x 16-1/8(D) x 7-114(Hl in. Weight . . . 11.b kg, 26 tb ACCESSORY GROUP Overhangadjustmentgauge. .1 45 rpm adaptor 1 Weight plate (Cartridge weight-adjustable) 1 Head shell 1 Sub weight. l Sc

6、rewdriver 1 Output cord (Connection cord) 1 iiii*ffiffill- . . . . . . . . . . . . . ., . . . . . . ? NOTE: Specificationsandthedesignsub.iecttopossiblemodilicationwithoutnoticeduetoimprovements. RadioFans.CN 收音机爱 好者资料库 2. OPERATIOU STROBOSCOPE The proper part depend upon the below. and STROBOLIGHT

7、ffiL*ffiXA $s113 RPhd BUT5ON Push this but,ton for playing a record 33-1/3 rpnr speed 45 RPh BUTTON Push this button for playing a cord. 45 rpm speed re- 33 113 rpm 45 rpnl SPEED CCINTROL KNOBS with either of tire speed selectors pressed, watch the appropriate stroboscope band and slroboright. Adjus

8、t for precise speed (so t,hat the band appears to stand still) by turning that speed cont,rol knobs. Turn toward + clockwise for fasten speecl o to_ warri (counterr:lockwise) frlr slower. When the stroboscope appears to stand still, the speed is cor- rect. of the stroboscope band power source and re

9、cord to read speed as STROEOSCOPE 50H z 60H z 50Hz 60Hz 33 1/3 rprn 45 rpnr ST R OBOL IG HT FUNCTION LBVER This three-stage lever turns the motor on ancl off. and raises and low,ers the tonearm . o OFF Position Shuts off power the motor, Stopping platter rotation. o ON-UP Position Switched from OFF

10、this position causes the platter to begin moving and switch on the strobolight. Switched from DOWN it, raises the tonearm so that the stylus leaves the record surface smooth- ly. o DOWN Position When you are ready to begin record play move the lever to this position and stylus r+ill lower gerrtly on

11、to the record. rc 46:(ffi- 33 1/3 rpm 45 rpm 3. PRINCIPLE OF MOTOR OPERATION Construction of motor control for the PL-51A is depicted in Fig. 2. 1. Applying power sets the oscillator into operation. Output of this circuit passes to the pole position detecting circuit (L1-LG). 2. Here, assume that co

12、upling between L1 and L4 is the tightest. Voltage induced in L4 is rectified and applied to Q106/Q109 in the driver. 3. Q109 in turn conducts and causes current to flow in the associated drive coil (A-1). The rotor moves in the direction shown by arrow in Fig. 1. The magnetic pole affixed to the rot

13、or induces a voltage proportional to rotor movement, in the sensing coil (A-4). 4. Voltage induced in A-4 is rectified by a diode in the speed sensor and applied to Q103 in the control stage. This point is also fed from the reference voltage generator (voltage Es)through a fine speed control pot. 5.

14、 Voltage applied to the base of Q103 in the control stage controls current that flows in Q104. 6. Q104 serves as a constant current source for Q106 through Ql1 1 in the driver and therefore controls current flow in the drive coils. 7. When ambient temperature change causes driver current to rise, th

15、e speed of rotation increases above the rated value. Q104 current increases and Q106-Q111 currents decrease. pOLE pOStTtON As a result, the speed of rotation falls off. DETECTOR OSCI LLATOR REFERENCE VOLTAGE GENERATOR POLE POSITION DETECTOR Pole Position Detector Fig. 1 shows a simplified view of th

16、e drive and sense coils. With power applied and coupling between L1 and L4 high, Q109 causes current to flow through A-1. As a result, the rotor end of coil A-i becomes a south pole (S1) and attracts N1. The rotor moves in the direction shown by arrow. Coupling factor between L2 and L5 increases and

17、 operatior, of Q110 causes current to flow in coil A-2. Pole S2 attracts pole N2 and rotor rotation continues. In the same manner, 53 attracts Pole N3. Continuation of this process causes the rotor to turn on a steady basis. DIRECTION OF ROTATION CONTROL STAGE Fig. 1 DRIVE SENSING cotLS cotLs sPEED

18、SENSO ROTOR Lr Lz L3 DRIVER Fig.2 4. ADJUSTM ENT When adjustment of the fine speed control does not give a satisfactory speed, adjust the motor in accordance with the following procedure. 1. Remove the bottom cover. 2. Set the fine speed control to the midposition. 3. While observing the edge of the

19、 turntable platter with a strobe, adjust screws inside the motor as shown in Fig. 3. 4. Alternate switching between 33-1/3 and 45 rpm speeds while making adjustment. Make sure that both speeds are correct. Selection of Line Voltage If model PL-51 does not agree with the line voltage of your service

20、area, set the unit to the proper line voltage as follows: 1. Remove the bottom cover, now you can see the terminal board (Fig. ). 2. Unsolder the lead (White) from the terminal. 3. Solder the lead (White) to the terminal of your local line voltage. WH ITE P.C. BOARD NOTES: N) 5 o l) o J w( OOO TERMI

21、NAL BOARD POWER TRANSFORMER FL-5IA First set knob to midposition Fis. 3 1 10V 1 20V 1 30V 220V 240V YELLOW BROWN ORANGE RED GRAY J-.a.- 6ry Use screwdriver for adiustment Fig. 4 5. EXPLODED VIEWS AND PARTS LIST 5.1 PACKING NOTICE: Any parts asterisked(*) are subject to being not supplied. Key No.Des

22、criptionPart No. 1 2 3 6 7 o q* l 0 10-1 11* 12 13 14 15 16 17 18 19 20 21 22 1a 24 25 26 2t* 2A 29* 30 31* 32 33 O- Rubber mat Rubber mat ring Card board Rubber mat bag 345x395x0.05(t)mm Vinyl bag Operati ng instructions Top packing Dust cover Dust cover bag 70Ox650 x0.05(t)mm Styrotector (A ) Styr

23、otector (B ) Unit PL-51 Vinyl cover Furnished parts box Screwd river EP adaptor Main weight assembly Lateral balance weiqht Set screw M4 x 5 Subweight A Overhang checker Parts Box cover Connection caLrles Weighr plate Screw (13mm) (11.5mm) ( 8mm) ( Smm) (15mm) Washer Vinyl bag 5O x 70 x 0.O3(t)mm Nu

24、t Head Shell Turntable platter Vinyl bag 345x395x0.05(tlmm Packing case Packing stopper Rubber mat assembly KEB-058-0 KAH-OO7.A H 52-632-0 E11-O24-O KRB.064.4 KHC-059-0 KNK.266-4 KHA.226-B KHA.221-A H 56-603-0 KHX-026-B KEX-OO2-A KNK-055-B KXA-566-A KXA.42O.B KLA-131-O KNK-290-0 KH X -027-0 PDE.OO4.

25、A N64-698-A 811-044-C B 11-657-0 KBA-043-0 K8A-044-0 KBA-045-O 823-642-O 871-653-4 KNH -108-0 PHG-034-0 KHK4OSO KEA-019-0 Attached 1 9 8 PL-5IA The following symbols stand for screwsj nuts, washers, etc. as shown in EXPLODED VIEW on pp. 9-10. N. nut FW. flatwasher SW. springwasher E. E-typewasher T.

26、 Tappingscrew Parts List of Mechanism NOTES: Sems A: Screw and spring washer Sems B: Screw, spring washer and f lat washer Sems F: Screw and flat washer NOTICE: Any parts asterisked (*) are subject to being not supplied Key No.DescriptionPart No. 1 2 J 4 5 t) 1 o o 10 11 12 1a 14 15 17 18 19 20 21 2

27、2 a1 24 26 27 28 29 30 JI 32 JJ 34 35 JO a1 Rubber mat ring Rubher mat Turntable platter Dust cover Ovalcountersu nk head screw M4x10 Lock plate Pan head sems A screw M4 x I Motor Motor hlase Power transformer Transformer base rubber A Transformer holder Pan head sems F screw M4 x 15 Boss Power supp

28、ly circuit Assy Cord fixer Boss Terminal board 5P) Pan head screw M4 x 12 Wood screw 3.1d x 13 Upper board lnsulator (G) lnsulator (H) Power cord grommet P late Lamp cover Strobo lamp Pan head sems F screw M3 x cord Adaptor catch Pan head sems F screw M3 x Spring hinge assembly Wood screw 3.1d x 13

29、12 15 KAH-OO7-A KEB-058-A KNH-108-0 KN K-266-A N61-084-0 KXM.O21.G KNA-572-F KTT-015-0 KEB-063-0 KNA-603-A KN K.186.,A KWR-O30.E KEX-004-0 KN K-186.4 KKE-006-B KMwl-093-A KXA-796-B KXA.797-B E32-056-0 KNA-522-C KAK-046-0 K E L-OO4-C KDX-O06.A KLA-601-0 KXA-603-B (or KTT-016-0) 13 Key No.Description

30、Part No. JO 39 40 41 42 AA 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 b-J 64 btJ 6l 68 69 7A 71 72 73 74 75 16 77 78 Under board P late Tapping screw M3 x 10 Washer 4d Pan head sems A screw M3 x 5 Main weight assembly Sub weight A Elevator arrn Elevation shaft Set screw M2.6 x 2 Washer

31、 Spri ng Washer Arm base Arm clamp Arm rest Clamp pin R est stand Set screw M26 x Knob Wood screw 3.1d x 16 Arm board Spri ng Arm lift plate Pan head sems A screw M3 x 5 Lifter shaft angle Cable Terminal strip (1L4P) Lift plate Pan head sems A screw M3 x 5 Leaf spri ng Pan head sems A screw M3 x 5 P

32、ush button Button shaft Spri ng Lifter base Pan head sems A screw M4 x 6 Bail lever Spri ng KNA-629.E KAM-090-0 KXA-566.A KLA-131-0 KXA-392-0 KLA-350.A KBE-008-0 KBH-O22-A KNA.125-A PNW-001-0 PNW-O28.A PNW-027.A KLA-1 11-0 KLA-240-0 KLA-s,I 8.A KNA-761-0 KBH-066-A KNA-328-O KXA,583-A PDA-001-0 KKC-0

33、21-O KNA-576-0 KBK.O16-4 KLA.527.D KLA-530-C KBH-099-0 KXA.581.D KNA-192.8 KBH-029.8 Attached 23, 24, 1O4 1,4 Parts List of Mechanism PL-5IA Key No.DescriptionPart No. 79 80 ot at* 83* 84 85 86. 8l- B8 89 92 93 94 96- 97 98 99 100 101 102 103 104 105 106 101 1 08, 1 09 110 111 1 12 113 114 C a3) Pan

34、 head sems B screw M3 x 5 Pan head sems A screw M3 x 5 Leaf spring Steel ball l5l32l Bail lever shaft Rubber washer t=1 Tef lon washer Lever Spacer A) Microswitch Pan head sems A screw M3 x 16 Pan head sems A screw M3 x 16 Potentiometer ( Fine speed adjustment) Function lever Cam Power cord Terminal

35、 board assembly P late P late Wood screw 3.1dx 16 Pan head sems F screw M3 x 8 Bottom cover Power supply P.C. board Capacitor 0.0331.iF Capacitor 0.01pF 1.4kV Mylar tape Terminal (B) Fuse holder Fuse 0.3A (Wired in type) Terminal L-shaped) Fan head sems A screw M3 x 1O Metal oxide 1Ok 2w Tonearm ass

36、embly Arm rest assembly Operation mechanism assembly KBK-016-4 KLA-154-0 KNA-191-B KLA.155-B KSF-023-0 KCS-006-A KLA-574-O KXA.582.A KDG-01 1-0 KXA-s71-F KNK-253-D KNK-254-C KMS-074-O KNP.O65.A KCE-009-0 c43-O03-0 KN K-222-0 K91-006-0 E21 -030-0 K28-003-0 RS2P 1O3J PPD-520.A PXA.O3O.A KXA.664.G Excl

37、uding head Parts List of Mechanism 15 6. SCHEMATIC DIAGRAMS, P.C. BOARD PATTERN AND PARTS LIST 6.1 SCHEMATIC DIAGRAM R ch OUTRJT L ch OUTPUTCF- Eart h 52 PO$JER SJITCH LJl3L_i 0 POWER Dros llZ-192 SUPPLY CIRCUIT ASSY KWR-O3O-E POIER P.C. BOARD KNP- O5S-A TRANS FORIlER KTT-015 SPEED SELECTOR swtTCH s

38、 r - (! ) O STROBO LAI1P 5P TERMINAL Dtor-rM srDol-01 r- !r rr*_t L 16 25D234 HT-tr-, f,ll t( ) l ,-l F-:-alsl trll i | ,l PL.5IA 6.2 POWER SUPPLY CIRCUIT ASSY (KWR-O3O Foil Side r ID,o, _,oo sIB0l-01 Q ro1 25DZ34 ! rrsr 034 I D,o, wz-192 | t- r- _J tr) cf) O (.) () - () O CD t (v- O (-) J) c) (-) c

39、t FUSE O.3A . Croz 4- 33/35 o ol o2 o Dlor - Dto+ o-f-o Hf.-.o SIB0l-01 x 4 e-t(.+ e=fl+ o o E+;i *+i o o :4 :3 ?- StH *l- 6: 6 2sD234 Cro: . e# 100/?5 o6 o KWR-O3O-E o 5 o t7 . CAPACITORS: lN pF UNLESS OTHERWTSE NOTED p: pF e RESISTORS: lN f,i,7aW UNLESS OTHERWISE NOTED k: ke. M:Mf,r Parts List of

40、Power Supply Circuit Assembly CAPACITORS Symbol DescriptionPart No. c1 01 c102 c1 03 Electrolytic E lectrolytic Electrolytic 330 35V 33 35V 100 25V CEA 331P 35 cEA 330P 35 CEA 101P 25 RESISTORS SymbolDescription Part No. R 101 R 102 Carbon film 680 Carbon film 680 RD%PS 681J RD74PS 681J SEMICONDUCTO

41、RS Symbol O1O1 Transistor 25D234 i D101 Diode Sl801.Ol D102 Diode 51801-01 D103 Diode 51801-01 D104 Diode SIBO1-O1 Dl05 Zener diode W2.192 OTHE RS SymbolDescription Part No. Fuse 0.3A Fuse holder E21-030-0 K9l -006-0 18 IIC,NEEFI ELECTFIONIC COEIPOFIATIGIN a 1, 1-Chom-, Megu.o. M.glro ku Tokyo 153 J-p. U,S. FIONEEFl ELECTFIONICS COFIFCFIATIG,N 75 Orfo.cr D.,wc Mc-,r-.h. N,:.a J.rs-V O7a7a.tS A PIONEEFI ELECTFIONIC (ELJFIOPE N.V. Mei.-Ce.Ler Mt: . 21, aOOO An.we.p. B.a!g!,i FIG|NEEFI ELECTFIONICi ALSiTFIALIA PTY. LTO. P56 A C iy Foad. Soutti Me bou.ne V.t.,a 3eO5 Aust.ara o MABCH 1Sl5