CDrqoNeerr www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com PL.5iEicl lI It IIr MODEL PL-550 COMES IN THREE VERSIONS DISTINGUISHED AS FOLLOWS: This seruice manual is applicable to the PL-550/5, ST type. When repairing the PL-550/HGT type please see the manual on pages 43-48. Type Voltage Remarks HGT 22OY and 240V (Switchablel SEMKO (Sweden), NEMKO (Norway), DEMKO (Denmark) and El (Finland) approved model without phono cartridge. S 1 10V, 120V, 22OV and 240V (Switchablel General export model with phono cartridge ST 11OV, 120V,22OV and 240V (Switchable) General export model without phono cartridge CONTENTS 1. SPECTFTCAT|ONS.... 4 2. PANEL FACILITIES .. . 5 3. PARTS LOCATIONS .. .. 7 4. EXPLODED VIEW 11 5. NOMENCLATURE OF SCREW, WASHERS AND NUT . 16 6. SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNS AND PARTS LIST 6.1 Schematic Diagram 17 6.2 Drive Control Assembly (PWG-008) . . . 19 6.3 Power Supply Assembly (PWR-822) 22 6.4 Positional Detector Assembly (PWX-006) 24 7. PACKING 25 8. OPERATING PRINCIPLES CIRCUIT DESCRIPTION 8.1 Block Diagram 27 8.2 Motor Operation 29 8.3 Waveforms 36 9. TROUBLE SHOOTING GUIDE 9.1 Motor Does Not Rotate 37 9.2 Motor Run-away 38 9.3 Motor Alternates Between Forward And Reverse Rotation 39 9.4 Unstable Rotation Near Rated Speed 39 10. ADJUSTMENT PROCEDURES 40 11. D.D MOTOR EXPLODED VIEW .. PL-550 Additional Service M'anual Enclosed Herewith PL-550X/ST differs from PL-550at the point of cabinet appearance; it is black cabinet. Except packing case and cabinet all of compo- nents are same as PL-550. J www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 1. SPECIFICATIONS Motor and Turntable Semiconductors M o t o r . . . . . Q u a r t z P l l H a l l m o t o r l C s . . . 2 Turntabfe Platter . .324mm diam. aluminum alloy die-cast Transistors g Moment of Inertia . . . 340kg.cm2 (including platter mat) Diodes 1 1 Speeds . . 33-113 and 45rpm Hall elements 3 Speed Control Range . . . . . . !6%o Wow and Flutter Less than O.O2|yo (WRMS) Accessories Signal-to-Noise Ratio More than 70dB (D|N-B) 45rpm Adaptor . . . . . . l Overhang gauge . 1 Rotational Characteristics Screwdriver 1 Build-up Time . . . . . . Within24o" rotation at33-1l3rpm Sub weight l Speed Deviation . . . Less than 0.003% Cartridge mounting screws (ST, HGT type) . 6 Speed vs. Load Characteristics. . . . Stable up to 120 grams Cartridge mounting nuts (ST, HGT type) 2 drag load Cartridge mounting washers (ST, HGT type) 2 Speed Drift . . Less than 0.0003% lh at 33-1 l3rpm Operating instructions I _ Less than 0.00004%/degree temp. change at33-1l3rpm Miscellaneous Tonearm Power Requirements . . . . Ac 110-120-22o-240y 5ol60Hz Type . Static-balance type, S-shaped pipe arm Power Consumption . . . 5W Effective Arm Length . . . . 221mm Dimensions 490(W) x 1S5(H) x 390(D)mm overhang . . 15.5mm l9-sl16(W) x7-s116(H) x ls-3ls(D)in. UsableCartridgeWeight . 49 (min.) to 14.59 (max.) Weight ,t2kgl26tb6oz (For cartridge weighs over 9.5g, attach the sub weight) Arm Height Adjust Range t5mm lfLfri"trr"rs and design subject to possibre modification .. without notice, due to improuements. )uDTUnctlons Anti-skating force control Lateral balancer Stylu s pressure d irect-readout counter weigh t Arm height adjusting device Cueing device Headshell stand Strobe light Free stop hinges Insulator feet Furnished Cartridge (S type) T y p e . . . . . M o v i n g m a g n e t t y p e P C - 5 5 0 E / l l R e p l a c e m e n t s t y l u s . . . . P N - 5 5 0 E / l l S t y l u s T i p . . . 0 . 3 x 0 . 7 m i l d i a m o n d Output Voltage. . . . 3mV (at 1kHz,50mm/s RMS) Tracking Force . 1.0g to 1.8g (proper 1.5g) Frequency Response 10 to 30,000H2 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 2. PANEL FACILITIES HEADSHELL STAND Convenient stand for storing a spare cartridge. Aligh headshell guide pin with slot of stand and insert. Avoid storing here if the headshell is too large to allow the dust cover to be closed fully. The 45rpm adaptor can also be placed here. 45 RPM ADAPTOR Place on center shaft when playing 45 rpm records (with large center hole). STROBE LTGHT---- - '-- -.-'-'"',,* Lights to illuminate stroboscope when POWER/ARM ELEVATION lever is set to ON. The stroboscope appears to become stationary when the Quartz LOCK button is set to ON. PLATTER MAT COVER ] ARM REST -,- -.- -"^. - - , . -.,,, -.-.1 Supports the tonearm. Gently press tonearm in direction shown by arrow to clamp. Be sure to clamp when not playing records. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com ""'Cf** @- PL-E'5cl QUARTZ LOCK BUTTON Quartz PLL system functions when button is depressed to ON. Platter rotation becomes precisely locked to the speed selected by the SPEED buttons. SPEED ADJ. CONTROL Can be used to increase or decrease the speed with respect to the selected rotation. Set Quartz LOCK button to OFF and turn this control toward the + direction to increase speed (maximum 6%) and toward the - direction to decrease speed (maxim um 6ok). 45 RPM SPEED BUTTON Press to play 45 rpm records. 33 RPM SPEED BUTT'ON Press to play 33-1 13 rpm records. POWER/ARM ELEVATTON LEVER Combines power switch and tonearm elevation switch. O F F . . ON-UP DOWN Power is cut off. Power is turned on (platter rotates). When moved from DOWN to this posi- tion, the tonearm is raised. Tonearm is gently lowered. o www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 3. PARTS TOP VIEW LOCATIONS Cabinet PMM-056 Headshell stand PNW.O73 PMM-062 (ST type of PL-550X) Plate PAN-029 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Control panel PXT.O98 Knob (ANTI-SKATE) PAA.O14 Headshell assembly PXA.630 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com BOTTOM VIEW Line voltage selector PSB-001 Power transform PTT,O14 D.D. motor PXtV-029 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com PL-E'5'O Power transformer PTT.O,I4 .a.? Power supply assembly PWR,822 Drive control assembly PWG.OO8 i i ' , , ' tor I ' * l,t\* | Neon lamp PE L.OI l www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 4. EXPLODED VIEW PT4x10 Dust cover PNV-011 Platter mat cover PEC.033 Rubber cushion PNT{08 OCM4x10 Platter PNR.O31 Screw PBA-033 l'-.- Strobe unit \- PXT-I74 Plste (B) PNB.064 Plate PAN.O29 ? e -i? d@ PSA4x 10 D.D. motor PXM-029 See page 39 Hexagon socket screw M4x25 Neon lamp PEL.Ol T . /Name plate t - . - Bottom plate assombly PXA.133 PART 1 see page 1 1 6 Prax1o Bottom Plate PNW-096 ." 6.. ." Screw Y PBA-037 A--.-Z^ Scr PB 4 < E le € g //o\ g @ Screw PBA.O37 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com NOTE: Part indicated in green type cannot be supplied. AC power cord PDG-OO4 Hinge assembly PXA.171 Strain relief E32.056 RM3. PSA3x8 Line voltage selector PSB-001 Plate PAM.O41 RM3.1x13 Plate (B) PNB-064 -ry7 Screw PB4-034 Plate (A) . PNB.063 :'uo,..>< Knob (ANTI-SKATE) PAAO14 Control panel PXT{g8 Part 3 see page Plate PAT.O22 Jr Cabinet PMM.O66 PMM.062 (ST type .. of PL-550X1 Screw PBA{37 \ \. CW3.1 x 13 I '-1 \...] Part 2 see page 12 PXA-237 (S-type) I I .9.g @ Part 3 s€e page 13 Screw PBA.O37 Foot aisembly PXA-I 15 g e PT4x16 Terminal KKC-021 #I Strain relief KNK.244 .6 go PT3x6 PT4xl6 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com PL-s5Cl A A B c c D D 4.1 PART 1 NOTE: Parts indicated in green type cannot be supplied. lk\ $- l. -R U , P.C. Board holder I r 821-0OB P.c. Board holder + KNK.186 V l_ Drive control assembly PWG-008 vv) Power supply assembly PWR-822 Power transformer PTT.O14 d PSA4x6 FgU 0 I J-, Rnuou".. *rtrion flu eee.oar \J ,g I fl *","'" CJ- rea.ozs -t-- e // 6 1 6 ,,-.2- Slr';d:";,< www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 4.2 PART 2 NOTE: Parts indicated in green type cannot be supplied. PXA-237 ln assembly !. Operation button Button unit PAD.OI 1 Knob (SPEED ADJ) PAA.OO9 Spring PBH.O19 Micros,witch KSF-023 II l PSA3x 1 4 St€el ball Spring PBH.O17 Spring PAD-01 3 (without assemblY) Push switch (Ouarz Lockl PSG-001 PBH-018 Variable resistor PCS.O03 FW4 ffiw, l% M icrosi\rr, itc h KSF-023 EW3 @-ewa B c D A B c D www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com PL-55Cl 4.3 PART 3 NOTE: Parts indicated in green type cannot be supplied. Tonearm assembly PPD-543 llx";.t"tn' il,il8!B"' Screw PLA.567 Cartridge mounting screw PBA.9O5 Headshell assembly PXA-630 Weight assembly PXA-580 EV assembly PXA- 165 EV sheet assembly PXA.O86 Arm rest PNW-170? il dr ttv: 3x4 Arm rest assembly pT4x16 PXA-164 N4 PT4xl6 .-€, r A *g'lm'lu, iffffiTo'' -l l Washer 822.650 Nut ' PBN,OO4 AS lever PNW.071 Spring PBH-023 Plate 1 PXA-088 A g N'*' Lever PNW-07O Cam unit PNW.070 g (9 Washer EW2 PNB-527 PT4x16 A A B c D D 1 5 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 5. NOMENCLATURE OF SCREW, WASHERS AND NUT The following symbols stand for screws, washers and nuts as shown in exploded view. Symbol Dercription Shape RT Brazier head tapping screw PT Pan head tapping screw BT Einding head tapping screw $= CT Countersunk head tapping screw TT a Truss head tapping screw ocr Oval countersunk head tapping screw F PM Pan head machine screw CM Countersunk head machine screw f== ocM Oval countersunk head machine screw CIE TM Truss head machine screw F BM Binding head machine screw PSA Pan head screw with spring lock washer PSB Pan head screw with spring lock washer and f lat washer PSF Pan head screw with f lat washer Symbol D€scription Shape EW E type washer P \D lH FW Flat washer rd SW Spring lock washer \v T N N u t o F TJ WN Washer faced nut @ m ITW Internal toothed lock washer Av OTW Outernal toothed lock washer tA?. avJ I I sc Slotted set screw (Cone point) e -D S F Slotted set screw (Flat point) e E} HS Hexagon socket headless set screw @ @ ocw Oval countersunk head wood screw CW Countersunk head wood screw RW Round head wood screw EXAMPLE Symbol tr ffi" TT I - l e n g t h i n m m ( / ) I diameter in mm ( d ) F W ' 9 0 x l ' - r T " - ^ ^ - ; ^ ^ - t a r . _ ' l ' | | I thicknessinmm(r) :-i' I I diameter in mm (d ) f- J | :] Symbol 1 6 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 6. 6.1 SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNS AND SCHEMATIC DIAGRAM DRtvE C0NTRoL ASST PWG-oo8 Q,.0, 2Sci3r2 x 2 l 5 + $ 20v -l t'#' ON Sroi , lvRnrl0rrE^ uFe" hrVX-006 No.4 PwX-006 No.3 PWX-006 No.2 PWX-0O6 No.1 d; www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Parts List of Drive Control Assembly (PWG-008) SEMICONDUCTORS Symbol Description Part No. u l a2 o3 04 o5 o6 D Tra nsistor Transistor Transistor Transistor t c Diode 2SC 1 3 1 2 H o r G 2SC 1 3 1 2 H o r G 2SC945 R, O or P 2SC945 R, Q or P PD10 0 1 PA2001 152473 PL-E'5ct Symbol Description Part No. R36 R37 R38 R39 R40 Carbon film 33 Carbon film 180 Carbon film 6.8k Carbon f ilm 1.8k Carbon film 10k RDTaPS 330J RD74PS 181J RD74PS 682J RD/rPS 182J RDz4PS 1O3J RESISTORS Symbol Description Part No. V R1 VR2 R 1 R2 R3 R4 R5 R6 a7 R8 R9 R 1 0 R l 1 R12 R 1 3 R 1 4 R 1 5 R 1 6 R 1 7 R 1 8 R 1 9 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R3 1 R32 R33 R34 R35 Semi-f ixed Semi-f ixed 15k-B 680-B Carbon film 10k Carbon film 180k Carbon film 82k Carbon f ilm 10k Carbon f ilm 180k Carbon film a2k Carbon f ilm 1M Carbon f ilm 1M Carbon film 47k Carbon film 4.7M Carbon f ilm 1.5k Carbon film 56k Carbon film 56k Carbon film 56k Carbon film 56k Carbon film 47k Carbon film 39k Carbon f ilm 1M C a r b o n f i l m 1 1 0 k C a r b o n f i l m 1 1 0 k Carbon film 39k Carbon f ilm 9'l k Carbon f ilm 10k Carbon film 13k Carbon film 27k Carbon film 75k Carbon film 33k Carbon f ilm 5.6k Carbon f ilm 5.1k Carbon f ilm 5.1k Carbon f ilm 5.1k Carbon f ilm 5.1k Carbon f ilm 4.7 %W Carbon film 33 Carbon film 33 PCP-006 PCP-007 RD74PS 1O3J RDz4PS 184J RD%PS 823J RD'/4PS 1O3J RD74PS 184J RD''/4PS 823J RDlzaPS 105J RD''/4PS 1OsJ RD74PS 473J RD/cPS 475J R DZaPS 1 52J RD74PS 563J RD'/4PS 563J RD74PS 563J RD%PS 563J RD'/rPS 473J RD74PS 393J RDZaPS 105J RD/aPS 114J RDy4PS ,I 14J RD74PS 393J RD%PS 91 3J RDy4PS 1O3J RD,/4PS 133J RD%PS 273J RDY4PS 753J RD%PS 333J RD%PS 562J RD%PS 51 2J RD/4PS 512J RD%PS 512J RD%PS 512J RD%PS 4R7J RD/4PS 33OJ RD%PS 33OJ CAPACITORS Symbol Description Part No. c1 c2 c3 c4 c5 c6 c7 c8 c9 c 1 0 c 1 1 c12 c 1 3 c't4 c l 5 c 1 6 c17 c l 8 c 1 9 c20 c21 c22 c23 c24 c25 c26 c27 c28 c29 c30 c31 c32 Ef ectrolytic O.22 Mylar 0.1 Mylar 0.068 Ceramic O.O47 Ceramic 33p Ceramic 47p 50V Mylar 0.033 50V Mylar 0.0012 50V Electrolytic 1 50V Electrolytic 1 0 16V Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic Electrolytic 4 7 1 0 V 4 7 1 0 V 22 lov 3 3 1 0 V o.22 10V 25V 1 6 V 0.33 35V 2.2 16V 1 50V 2.2 16V 0.33 50V o.22 50V 220 6V 33 25V 33 25V 33 25V 47 33 10v 50v 50v 50v 50v E lectrolytic 4.7 25V Electrolytic 1 50V Electrolytic 1 50V Electrolytic 1 50V Ceramic O.O47 50V cEA 470P 10 cEA 470P 10 cEA 220P 10 cEA 330P 10 CEA R22M sONP CEA R22M sONP coMA 104K 50 coMA 683K 50 CKDYF 473250 ccDcH 330J 50 ccDcH 470J 50 coMA 333K 50 coMA 122J 50 CEA OlOM sONP cEA 100P 16 cszA R33M 35 CSZA 2R2M 16 cEA 010P 50 CSZA 2R2M 16 CEA R33M sONP CEA R22M sONP cEA221P 6 cEA 330P 25 cEA 330P 25 cEA 330P 25 cEA 4A7P 25 CEA OlOM sONP CEA OlOM sONP CEA O1OM SONP CKDYF 473250 cEA 470P 25 cEA 330P 16 OTHERS Symbol Description Part No. Crystal Heat sink Angle Connector socket assembly (G) Connector pin (A) Connector pin (E) Connector pin (F) PSS-001 PNS-OO2 P N B - 1 9 5 PXA-169 PKP{08 PKP.O1 1 PKP.O12 e l www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 6.3 POWER SUppLy ASSEMBLY (pWR-822) Parts List 250234 2SC3.'2 25C3'72 a, L-----r ta 6 O r- (f a G cn )< t6 (t Ds WZ-061 R ro 3.3K Oc! .,'Qb Q1 G n d a:lr€ 0 4 II ) @ .l] ,"F\ @>.,klk I o{ G www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com .E E c - E F s E c te\ Etrtr\ x/ as L. lJ 8. Stroboscope Pulse Circu it 1. The platter has only a single row of stroboscopic markings. Switchover for 45 and 33 rpm is ef- fected by changing the frequency of the pulse to the stroboscopic lamp. 2. From the Frequency Divider Selector I, a fre- quency of either 75Hz (for 45 rpm, representing 1/80 of 6000H2) or 55.5H2 (for 33 rpm, repre- senting 1/108) is obtained and supplied to the transistor that drives the stroboscopic lamp. 9. Reverse Rotation Prevention 1. PXM-029 operates indiscriminately in regard to the direction of rotation. If the platter is tumed slowly in the reverse direction by hand, a for- ward torque will be applied until the platter stops, reverses its rotation and reaches rated speed in the proper direction. 2. If, however, the rotational speed in the reverse direction is in excess of 33 or 45 rpm, the Forward/Reverse Command Block may ,,mis- read" this as simply excessive speed (',overrun,') and apply a reverse torque until rated speed is attained. 3. This reverse torque will further accelerate the tumtable rotation in the reverse direction. This is known as "reverse run-away." 4. To prevent this from happening, a Reverse Rotation Prevention circuit has been included. 5. This Reverse Rotation Prevention circuit con- sists of two flip-flops and AND gates See Fig. 12. 6. The input for this circuit is derived from the Ha.ll element position detection signals processed in the Reverse Rotation Prevention circuit. PL-E'5cl Fig. 1 1-e Lc Fiq. 1 l-f 7. As long as the platter is rotating in the proper direction, this pulse enters in the order B - A - C, and no "reverse" command is generated. 8. If, however, the platter rotates in the reverse direction, the pulse order becomes A - B - C, and a corrective command is given to the For- ward/Reverse Command Circuit. ! . t : 4 | | L"dj" t L 1 I o -o @ &">,,'Q€ iLd€ Fig. '12 F F r C AN I) F F z R a o l o u t 2 o u t a u o I o I o o o I o I o o o o C o o I o I I o 1 1 o I o o o o tl o 1 o 1 o o o c o o o 1 1 o I o Fig. l2 Truth table www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Hezl Hczl Hcr l o) E THA t o E b H e q) o3 5 H s o - L4(H41+ E +o) o = q) .fi ts{Hr.'+ ooE oOL6(Ha2+ ( H a1"" I HB: I Hcl l H o \ H c f H o 1"" I Hn' t -I ""' 1"" t H c . F A o CE (q3 O C tL . 9 A (o C E B Q) L 6 ) f > w q)r F o r w a r d R o t a t i o n E + A - c R e v e r s e R o t a t i o n A + B - c F i g . 1 4 35 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 8.3 WAVEFORMS 20v :s P0l00l tNF r 0.n/50 ,tt 6 337., r pm - 55.55Hr I r0 I E 5 3 2 I @ @ o 2.5V O V l?.5v 25V 6.25V] , , , , ' - ' r p m Speed up Speed down 6KHr - 0 v Approx 4O0mVp-p 3O72kHz Increasing Load Overshoot - l E r / l l a 1 2 nr3 E] {l} ; l 6 t? f q I I a t l 2. L------:*- R:. 13 . in 33, ?5 I at 3 Cr: 33, 25 36 4.5 ms 12.5 v www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com PL-s5cl 9. 9.1 TROUBLESHOOTING GUIDE MOTOR DOES NOT ROTATE Power Supply Ass'y PWR- 822 defective +20V between pins (15) and (16) of Drive Control Ass'y PWG-008? PA2001 defective. ]-2.5V at Emitter of Q3? 10V at pin (11) of PA2001? Q4 or Q3 defective. 5V at pin (18) of PA2001? R29, R30 or C18 defective. PD1001 defective. 1.5- 3V between pins (17) -(18) of PA2001? Check output of PD1001. See page 18. Low pass filter defective. Check potential at Hall elements (400mVp-p) and center point (3.8- 4V). Motor defective. With power OFE, resistance between terminals (2) and (4), (4) and (6), (2) and (6) on Drive Control Ass'y PWG-008 should be 64 ohms. Motor defective. PA2001 defective. www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 9.2 MOTOR RUN-AWAY Check if Q3 emitter volt- age is 12.5V. Rotate platter at approxi- mately 33 rpm by hand. Check if 55.5H2 signals at 0.3V are obtained at col- lectors of Q1 and Q2 (with 90" phase difference). Check if 0.75mV AC pre- sent at emitters of Ql and q2. Motor defective. Q1 or Q2 defective. Check if 0.3VAC voltage is present between pins (1) and (3) PD1001. C5 or CG defective. Check if 3.4VAC is present between (2\ and (4) of PD1001. PD1001 defective. Check output signal of Drive Control Ass'y PWG- 008 pin (20) 55Hz (33 rpm),75H2 (45rpm). PD1001 defective. Rotate platter by hand at 33rpm. Check output sig- nals at pins (18) thru (21) of PD1001. PD1001 defective. Check for 1.5 - 3V volt- age between pins (17) and (18) of PA2001. Low pass filter defective. PA2001 defective. 3A www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Check output signgl at pin (2O) of Drive Control Asp'y-55.5H2 (33rpm), 75Hz (45rpm), Quartz Oscillator or PD1001 defective. RC Oscillator or PD1001 defective. Check output at pin (14) of PD1001 - 6kHz. 9.3 MOTOR ALTERNATES BETWEEN FORWARD AND REVERSE ROTATION 9.4 UNSTABLE ROTATION NEAR RATED SPEED PL-sEicl Check power supply volt- ages +20V, +12.5V Check signals at pins (1), (3) of PD1001 and at collectors of Q1, Q2. Also check for proper phase re- lationships. PD1001 or Ql, q2 de- fective. 39 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com 10. ADJUSTMENT PROCEDURES 1. Adjustment of PA2001 Operating Point This adjustment is necessary whenever PA2001 has been replaced or repairs have been performed on the RC low pass filter ass'y or the power supply circuits. As the PXM-029 utilizes a phase comparator and frequency comparator combination, the operating points of these comparators must be adjusted. o Set unit in QUARTZ LOCK ON mode, 33 rpm. o Unplug jumper connector from Drive Control Ass'y PWG-008. r Adjust white potentiometer VR2 until strobo- scope comes to a standstill. See Fig. 15. Fis. 15 2. Speed Adjustment This adjustment is needed when proper speed can- not be obtained with the SPEED ADJ control in QUARTZ LOCK OFF mode. o Set SPEED ADJ control at mechanical center position. o Adjust blue potentiometer VR1 on Drive Con- trol Ass'y PWG-008 until stroboscope comes to a standstill. See Fig. 16. Fis. 16 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com PL-s5cl 11. D.D. OTOR EXPLODED PT2.6x6 VIEW NOTE: Parts indicated in green type cannot be supplied. I Cover PNW- 175 v Speed detector assembly PNP.O27 Positional detector assemblv PWX-OO6 o*s,...] R!<- dJ. "19 --rY Connector pin (A) PKP.OOS X'tal PSS.001 1 M 'Wa PNW-147 A A B c c D D www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com PL-s5cl The following locations in the text are incorrect. Please perform the corrections shown below. 4 EXPLODED VIEW (on page 11, 12l. o Please paste the following illustration below the table on page 18 (in 6-D). Incorrect Correct Page 11 2-B D.D. Motor(see page 39) D.D Motor (see page 41) Page 77 2-C PART 1 (see page 11) PART 1 (see page 13) Page!2 5-B PART 3 (see page 13) PART 3 (see page 15) Page12 5-C PART 2 (see page 12) PART 2 (see page 14) Page126-D PART 3 (see page 13) PART 3 (see page 15) ll.S\ www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com DIRECT DRIVE TURNTABLE PLI55O HGT Additional JoruicMnunl ()ProNEEFl' www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com A c D A B c D 12. HGT TYPE EXPLODED VIEW Power supply assemblY P1^/R-823 (on page 47) ,-6.-:\ { \r"f cPl Power transformer PTT-015 AC inlet PKP.O14 PSA 3x8 Angle Line voltage selector PSH.OOl NOTE: Parts indicated in green type cannot be supplied. PSA3x10 OCW3.1x 10 Plate PAM.O44 - - Cabinet PMM.OTO Function assembly PXA.233 (on page 45) O OTHER PARTS Packing cas€ PHG'147 Operating instructions PRB-041 (English) PRD-020 (French/German) OCW3.1x10 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com P|--5scl /HGiT A A B c c D D 3 3 aT g OVll l lg Function Assembly (PXA-233) Microswitch KSF.O23 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com A B c D A B c D 13. HGT TYPE SCHEMATIC DIAGRAM, P. C. BOARD PATTERN AND PARTS LIST 13.1 SCHEMATIC DIAGRAM a G ' a f- t t E L.- jrl :r- 3 ' - d - t Y ' ? ! ' : ' a < - ' a : a ' . ? . : i t 5 5 , i o 6 a ... & z IIII : 46 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Pl.-5rC'/HGlT 13.2 POWER SUPPLY ASSEMBLY (PWR.823I AC 220V 240V Power switch Powerswitch PWG.m8 No.l5 nvG.008 No.16 Pl rc-(xt8 No.20 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com Symbol D6scription Part No. o1 02 o3 o4 o5 D 1 D2 D5 D 1 0 Transistor Transistor Transistor Transistor Transistor Bridge rectifiers Bridge rectifiers Zener diode Diode 25D234 25C372-Y 25C372-Y 2SC1279-S 25C372-Y PCX-010 PCX-01 1 w2-061 1 S-1 887 Parts List of Power Supply Assembly (PWR-823) SEMICONDUCTORS CAPACITORS Symbol Description Part No. c1 c2 c3 c4 c5 c6 c7 c8 Mylar 0.033 250V Mylar 0.033 250V Ceramic 0.01 250V Efectrolytic 47O 50V Electrolytic 33 35V Ef ectrolytic 100 25V Ef ectrolytic 4.7 250V Electrolytic 2.2 25V PCL-013 PCL-013 ACG-001 cEA 471 P 50 cEA 330P 35 cEA 101P 25 CEA 4R7P 25O CEB2R2P 25 RESISTORS Symbol Description Part No. R 1 R 2 R3 R4 R 5 R6 R7 R8 R9 R 1 0 R 1 1 Rl2 R 1 3 Carbon film 4.7 Carbon film 4.7 Carbon f ilm 1.8k Carbon f ilm 1.8k Carbon film 5.1 k Carbon f ilm 10k Carbon film 2.7k Carbon f ilm 4.7k Carbon f ilm '100k Metal oxide 3.3k 3w Carbon film 22Ok Carbon film 4.7k Carbon f ilm 1.8k RD/rPS 470J RD1/4PS 47OJ RDT.PS 182J RD%PS 182J RD'/.PS 512J RD%PS 1O3J F..D%PS 272J RD%PS 472J RD'/'PS 1O4J RS3P 332J RD%PS224J RD%PS 472J RD/aPS l82J OTHERS Symbol D6cription Part No, F U l FU2 FU3 Fuse clip Fuse 31 5mA Fuse 500mA Fuse 100mA Heat sink KKR.OOl KEK.OOE PEK-OO7 PEK.OOS PNS-OO1 48 www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com www. xiaoyu163. com QQ 376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http://www.xiaoyu163.com