Pioneer-PL-L1000-Service
Contents
1. IC2 PA2004 L N b data 2208 0 47 25 1 2 815 gt 33 1 2W OR 47 25 NP E z amp rid 339 PT 88 D Y 4 YEL 4 y 8 i Km 4 5 47M 1 56p OQO 1 X TAL LY T Esos n 28 1 T es T 12 4 9 1 poten 240 RED l 1 2 TENERA 031 Kor 3 I NJM2903D 5 vR2 OPERATING POINT ADJ 33 L R26 18k 820 J 10k 125 TC40138P 1 6 062504 R34 E E 10k T 833 47k M Q2 3 2SC945 E 1 tJ TT 013 R30 1 2k 24 fom 013 soos WZ 150 C23 C24 R31 R29 E 226800 50 emu 12k 1 2 04 189473 82 0 s M l Q1 25 945 gt gt DI WZ 085 124 1 gt M A E CONTROL A Ass 1 H 4 54517 1 4 201 QUARTZ 9 OO D2. CdS Ass oan LAMP Ass y portance of the me je part Therefore when replacing D T 240 XWX 040 be sure to use parts of identical designation cas tpcx o51 This is the basic schematic diagram but the due to improvements in design PLT N 7 3 PEL 041 y O 9 6 TPB TPS 2 W I 9 0 0 0 0 0 0 0 9 y 5 24 22 R90 94 T 2 Ys 12 TH2 054 92 BID e vas 334 8 0 vns 21 4558 7S 10 25 1 LEAD IN s 2 H ERA COIL Assy PXB 118 E PCP 048 SEE za WHT 52 77 V C50 R87 1 50 prd 1229 01 100 927 T W OTPI4 ook Y 54 R94 1 2 6 ANS A7 TRACKING SENSER m K 554 Ti 822661 GAIN PCP 04 ore gt 285 TRACKING SENSER PCX 054 09 11 25 1061 25 1626 ZERO ADJ PCP 032 EE 010 12 254671 or 25 816 TES lt a Q7 8 e 286945 06 25 1563 1 20 4558 0 gt f gt 4 R78 27k D G 981 4 7 879 4 7k AW 2 R8247k nes TC40278P or A 8 2k 94 o5 100K De gt A d TCHOMBP ines s 100 100 TC4023BP ICIO 4
3. LOWERING R64 IOOk IM 18 30 IND L AND RESET O S 10 SIZE b 25cm IND Sw 1 17 IND 1 IND yy I LOWERING H SIGNAL q 0 6 30 125 17 130 8v ANA 1 1 mS co9 VR3 0 0 680k B 5 l R5 15 018 i 1 REP 1 Sw 15 REPEAT ON L STOP PULSE RPE OFF REPEAT STOP 15 LOWERING SIGNAL CONTROL LOWERING POSITIC LEAD IN REPEAT STOP EV UP H 3 gt TO ARM DRIVE SECTION 721 10 9 MANUAL OPERATION PROHIBIT SIGNAL gt H TO D D MOTOR STOP SECTION 30V 400mA 300mw 120 240 28A562 Y or 2 047 72 25 562 10 16 Pe gt 5 UP SW ON SW H Sw sw 2 i 09 wo wc wo o o 4 30 400 mA 300 mW 25 735 1204 240 i c or x2 5 25 1959 i I I 30V 400mA di 500 mw E 120 240 0 01 6 6 LOWERING POSITION SIGNAL Qa I LOWERING REP R37 2k 7 AND RESET x s ANN 4 REP 6mA CS 2 15 R39 1 2k 0209
4. 06 7 01212 06 8 10 152473 04 5 25 945 1 RT T lt im gt LESS THAN IV 01314 254562 or 28 562 47 25 NP 015 16 25 735 or 25 1959 lt B i a 10 10 100 ine qu ed y ver AY is UP 27 0 027 GRE 1 50 as 816 Ox SD Ja F i Hp R101 18 191 50 VR4 END DETECTOR H 6 TCA069U8P 05 s 012 RD3 6EB ENO SENSER ADJ A cao PCP 001 9 TC40018P DRIVER E PE 8 4 H u gt z lt s gt 1 MORE THAN 7V lt lt gt Tes PL L1 000 SWITCHES 51 0 DETECTOR ON OFF S2 00WN DETECTOR ON OFF S3 SPEED 33rpm 45rpm 54 SIZE 17 25 30 55 REPEAT ON OFF S6 ARM ELEVATION DOWN UP 57 START STOP START STOP 5101 POWER ON QFE The underlined indicates the switch position This is the basic schematic diagram but the actual circuit may vary due to improvements in design COIL Ass y 18 50106 25 1626 gt 54671 25 816 B 3 20 4958
5. 4 7 RO 47 o7 ar 100k M 013 14 254562 25 562 ih Du Nh 015 16 25 735 25 1959 lt NBN n R73 ena D 100 2 0 027 2 2 2 2k lo _ 102 ji Sn 4 Oh FAQ oz R00 1 2 7 END IMER ADJ 1016 4 690 PCP 012 RD3 6EB END SENSER ADJ 40018 lt 8 4 MORE THAN 7 LESS THAN IV TPS PL L1 External Appearance of Transistors and ICs 25042100 2004 Lot PD1 003 2SC1815 Typs No 5 TD62504P 2SC1959 s TC4027BP M54517P E c B SWITCHES S1 UP DETECTOR ON OFF TC4001BP S2 DOWN DETECTOR ON OFF 14 3 SPEED 35rpm 2SA816 TC4011BP S4 SIZE 17 25 30 do MERCI lends 2SC1626 TC4013BP 56 ARM ELEVATION DOWN UP TC4023BP 57 STOP START STOP S11 PoweR ON OFF TC4069UBP The underlined indicates the switch position ind This is the basic schematic diagram but the actual circuit may vary due to improvements in design 5 N JM2903 uPC4558 cet 2SA671 25 106 COIL Ass y 1
6. 50122596 lll 0206 0205 0204 D203 0202 33 45 0201 iii BE CONTROL A Ass v XWX 044 RED BRN OR YEL 11 1 BLK 2 BLU CONTROL B Ass v XWX 045 6 m B D207 209 GL 2PRI 0207 REPEAT 0302 0301 305 30 TLR121 lt LED Ass v XWX 042 PL L1 OOO 17 PARTS LIST OF P C BOARD ASSEMBLY S G MODEL NOTE e When ordering resistors first convert resistance values into code form as shown in the following examples 1 Ex 2 When there are 2 effective digits any digit apart from 0 such as 560 ohm and 47k ohm tolerance is shown by J 5 and 10 5602 56 x10 S61 RDAPS BAD 7 47k2 47 x10 473 RD APS J 0 50 O0R5 RN2H ORBI K 1n 010 vov ur ole RS1P OMG K When there are 3 effective digits such as in high precision metal film resistors 5 62h 562x10 5621 RNASR 2180202 The mark found on some component parts indicates the importance of the safetv factor of the part Therefore when replacing be sure to use parts of identical designation Part No PD1003 PA2004 PA2005 NJM2903D JC4013BP TD62504P M54517P 4001 4023 40118 4027 406908 uPC4558C uPC78L08 28C945 25 1815 25 1583 25 1626 2SA816 2SA5
7. Manual LINEAR MOTOR ARM STEREO TURNTABLE PL L1OOOQ Y PIONEER MODEL PL L1000 COMES IN THREE VERSIONS DISTINGUISHED AS FOLLOWS 220V and 240V Switchable HET HBT 220V and 240V Switchable 5 6 Europe model without cartridge United Kingdom model without cartridge CONTENTS 1 SPECIFICATIONS 2 PANEL FACILITIES 3 DISASSEMBLV 3 1 Panel 12 e apuqa h 3 2 3 3 Tonearm Dh 3 4 CdS Detector and Lamp 4 PARTS LOCATIONS 5 BLOCK DIAGRAM 5 1 Control Stage 52 EndDetectorStage 5 3 Arm Elevation Control Stage 5 4 Size Selector Stage 5 5 Repeat Control Stage 5 6 Lowering Position Detector Plunger Control Stage and Descent Signal Generator 5 7 Display Stage and Plunger Driver 5 8 Manual Drive Stage 5 9 Tracking Sensor Stage and Tonearm Driver Stage 5 10 D D Motor Control Stage and D D Motor Stop Control 6 CIRCUIT DESCRIPTIONS 6 1 Full Auto Logic 6 2 7 10 11 12 13 14 15 16 17 ADJUSTMENTS 71 0 0 Motor Operating Point Adjustment 7 2 Auto Lead in Timing Adjustm
8. Fig 3 2 3 3 TONEARM 1 Remove the plate pressing against the tone out towards the right arm output cable 5 The other rail mav also be removed bv pull 2 Remove the coil amp rail ass y ing out to the right after loosening the securing 3 Disconnect the ground lead connected to Screw the front rail from P C B 6 The tonearm may be removed once both rails 4 Remove the E type washers and screw holding have been pulled across to the right by at the gear and rail of the elevation mechanism least 15cm The front rail may then be removed by pulling Coil amp Rail ass y Ground lead 3 4 CdS DETECTOR AND LAMP l After removing the tonearm remove the CdS detector and lamp in the way indicated in Fig 3 5 2 Remove the shutter before removing the spacer securing the CdS detector Fig 3 5 4 PARTS Plate L PNW 338 Line voltage selector PSB 002 HET HBT PSB 007 S G Push button unit A PAD 058 Push button unit E PAD 059 Push button unit C PAD 060 LOCATIONS e The mark found on some component parts indicates the importance of the safety factor of the part There fore when replacing be sure to use parts of identical designation Plate R PNW 339 Tonearm assembly PPD 601 Panel PNR 126 Dial unit PXT 391 Push button unit B PAD 061 Push button unit F PAD 063 Push button unit D PAD 062 PL L1000 EV mechanism assembly Coil ass
9. Defective elevator mecha nism Defective elevator control stage Does the voltage dif ference between TP9 and TP12 register a little above 10V Defective drive coil De fective drive transistor Incorrect magnet polarity Is the voltage difference between TP8 and TP12 about 0 7 to 1 4 Defective IC21 Is there a voltage dif ference between TP8 and TP10 when the tonearm is moved by hand YES Defective tracking sensor stage Defective IC8 Q8 Defective rest sensor Defective return FF stage IC9 or START STOP switch 9 1 7 normal auto cut Out of adjustment or de fective sensor Does the end sensor erate normally is there sufficient output width when passing the slit sec tion YES Does the unistable mul tivibrator operate normal ly including the time constant Defective IC18 or sur rounding components YES Defective IC14 ae PL L1 Is the repeat FF IC12 inverted every time the Defective IC12 repeat switch is pressed Are pins 11 12 and 13 of IC9 switched from H to L level separately when the tonearm passes the corresponding record size position when the Ds i i sensor circui repeat switch is on elective Designated size board 30cm pin 12 Designated size 25cm gt pin 13 Designated size 17cm gt pin 11 Is TP3 switched
10. R78 27k 4 7k R79 4 7k W 562 lt 62 cese 1959 MOTOR PXM 073 1 lo 6EB rum DRIVER E Ass y 1 65 u ll 16 P C BOARD CONNECTION DIAGRAM S G MODEL POWER TRANSFORMER LINE VOLTAGE 1 x jet SELECTOR BLU 1 240V o BRN 3 220V o aO kV RED WHT l 110V GRY GRV 00 0 5101 6 POWER SWITCH o AC 110 120V 220 240V 3 50 60 Hz los Tw 6 9 pPCTBMOBH 01034 2 82 250 TR26 TR23 470 25 MOTOR Ass v PXB 061 66 5 COM 1 AN 25 a 900000 7 BLK WHT RED WHT BRN 2 RED 52 OR 4240 5 9 TEL POWER SUPPLY PWR 058 howe VLT _ om GRY WHT f BRN WHT XWX 041 PL L1 OOO DEL sola Ass y PXB 118 058 PA2005 8 2204 gsosemeos gf oH cite AR E Ra aa ip Hs c ite o o CdS Ass XWX 041 LAMP Ass y PHOTO Tr Ass y XWX 043 XWX 040 DOO 4 DETECTOR TIMER ADJ Se Seen 07 vo1212 4 SIZE
11. e When the power switch is turned ON the turntable will always be set for records with a diameter of 30cm and the corresponding light will come on NOTE This switch will not work if depressed when the tonearm is moving auto lead in auto return auto cut 6 REPEAT SWITCH Press this switch for repeat play When pressed the indi cator will light up and the record will be played again refer to page 12 for further details on repeat play Press this switch again to release it The indicator will go off and the repeat play function will be released NOTE This switch will not work if depressed when the tonearm is moving auto return auto cut 0 ARM ELEVATION SWITCH Use this switch to interrupt play temporarily or to per form manual play When the DOWN position is depressed the tonearm will descend and when the UP position is depressed the tone arm will rise These two operations will be performed al ternately every time the switch is pressed NOTES When the POWER switch is set to ON the tonearm will start in the UP position This switch will not work if depressed when the tonearm is moving auto lead in auto return auto cut When the switch is at UP the auto return cancelling mecha nism is actuated and so there will be no auto return 7 START STOP SWITCH Press this switch for auto play The platter will start to ro tate the tonearm will automatically move over to the edge of the record and
12. gt 3 14 R38 1 2 1 8v 6 po UP i 24V LOWERING EmA R46 1 2k I 5 SIGNAL x4 17 0 6V SOLENOID 556 av 5 2 R47 12k 10205 003 T 5 gt 25 3 TIMING ADJ De R48 1 2 od VR3 i 8v 680 MAX 250mA GL 2PR1 x6 1 851 s 1 I I IM Z J R52 2 9303 151885 D 03 RAS Ik R50 152475 MAX mA 1 LOWERING SIGNAL BMA I CONTROL C35 1 10 16 0 2 058 BMA l Q302 I I Q3024304 5605 0 D302 304 TLR121 505 Ik 0304 SENSOR Ik 0303 25cm SENSOR 6 05mA t 30cm SENSOR gt Number in parenthesis are the IC pin numbers L denotes L level H denotes H level EV denotes arm elevator UP denotes that arm elevator is in UP position while DN that elevator is in the DOWN position The Full Auto Logic section is made up of the following 5 main stages 1 Tonearm control stage 2 End detector stage 3 Elevation control stage 4 Record size selector stage 5b Repeat control stage 6 1 1 TONEARM CONTROL STAGE 1 2 When the power switch is turned the lead in FF and return FF are reset by the initial reset signal passed from C29 R55 to 1 16 1 17 1 9 and IC10 the phono motor will remain stationary if the tonearm is on the arm rest but commence to
13. 3 Set the record size selector to the 30cm tion Press the START STOP key to start the tonearm lead in movement When the tonearm is about 20mm away from the outer edge of the record an output pulse signal will appear at TP3 see Fig 7 3 Adjust VR3 to obtain a time constant of 2 2 2 5 sec for this pulse signal 2 2 2 5 sec pues 73 END SENSOR SENSITIVITY ADJUST MENT Connect the oscilloscope to the TP4 terminal Set the arm elevator to the UP position and shift the tonearm across to near the lead out groove Hold the tonearm carrier by hand and move the tonearm back and forth at a rate of 5 to 10cm sec During this operation adjust VR9 so that the TP4 output saturates at H and L levels at about 50 duty 74 Connect the oscilloscope to the TP5 terminal Secure the tonearm to the arm rest and remove ae gt Fig 7 4 END TIMER ADJUSTMENT the turntable platter Insert a piece of paper or any other light shield into the end sensor stage As soon as the piece of paper or light shield is removed an output signal appears at TP5 Adjust the time constant of this output to 1 06 0 1 sec by means of VRA 1 06 0 1 sec 5 Fig 7 5 25 75 TRACKING ADJUSTMENT 1 Set the arm elevator to the UP position and adjust VR8 to obtain of voltage of less than 0 1V between TP9 and TP12 2 Set the a
14. 62 Symbol amp Description C15 C16 C18 C24 C28 C32 C38 C46 C52 C19 C20 C22 C27 C31 C45 C29 33 C34 C39 C41 C36 C37 C43 C49 C60 C62 Symbol amp Description X tal TH1 TH2 Symbol amp Description 1 101 Q101 D101 D102 D103 R101 C101 C103 C104 C105 C106 C108 C109 Spacer Spacer Screw Fuse Fuse C107 0 047 450 400mA 1 25A Symbol amp Description PL1 8V 70mA Parts List of LED Assembly XWX 042 Part No Symbol amp Description TLR 121 D301 D305 RD PS 103 R301 Parts List of Cds Assembly XWX 041 Part No Symbol amp Description PCX 051 Cds Parts List of Photo Tr Assembly XWX 043 Part No Symbol amp Description TPS605 Q301 0305 Parts List of Control A Assembly XWX 044 Part No Symbol amp Description GL 2PR1 D201 D206 PSG 022 S3 S4 Parts List of Control B Assembiv XWX 045 Part No Svmbol 8 Description GL 2PR1 D207 D209 PSG 022 55 57 TTIE 15 SCHEMATIC DIAGRAM S G MODEL 2 RIT 10k 04 182473 cR MEE A III I CONTROL Assy 032 ml 0 MOTOI 1076 R97 esonw N PXB 50 c20 522 520 47 25 1
15. NO Is there a gap between the elevator shaft unit and elevator bar when the elevator is lowered Elevator mechanism not properly adjusted Do the lead wires below the carrier base A ass v scrape against the guide bar Does the carrier float 2 YES Proceed to section 9 2 2 NO Defective damper bearing or roller 9 2 4 Carrier base fails to move Do the damper bearing a and roller move bmo Defective damper bearing othly or roller YES 4 5 the carrier clamper tonearm clamper been re moved Rearrange the wires to prevent any interference Defective CdS element or lamp or disconnected lead wire or loose soldering NO Remove the clamper YES Do the relevant parts move smoothly when moved by hand NO Foreign matter in the car rier base or jammed lead wire YES Loose magnet mounting YES Defective magnet mount ing Defective circuit PL L1000 39 9 2 5 Carrier base moves too freelv Is the platter perfectiv horizontal 7 Readjust mounting Defective tonearm ass y elevator shaft or bearing Readjust the height of the elevator sheet the platter YES Is there any play in the tonearm ass v or elevator shaft Is there a gap between the elevator sheet and tonearm rubber tip YES Circuit not peoperly adjus
16. Noise like tumblingroller VES Defective roller damper NO bearing or guide bar Do the PU leads and or shield tubing strike against the guide bar under carrier A YES Reset lead wires and tub ing in correct position NO PU cable ground floating noise 9 2 12 Abnormal noise direct from turntable platter Are there any magnetic materials below the platter or in the linear arm portion Remove such materials Is the noise generated Stopper unit dislodged when tonearm is moving from stopper rubber or to the lowering position 2 plunger rubber NO Noise generated when elevator moved up and ES Defective driver E ass y down Defective roller damper bearing aa 9 2 13 Elevator does not move Does guide bar rotate NO Does the driver E assy IvES motor rotate NO Does the elevator start to move when the large pul ley is rotated Flash or foreign matter in the carrier base A ass y elevator bearing Clean out and or remove flashes from the bearing Clean off any oil on the rubber belt Gear F and worm stuck together or defective driver E ass v YES Readjust the elevator bar position Does the elevator bar strike against the stater base NO Defective circuit or discon nected wiring 9 2 14 Lowering position not attained
17. PEL 041 PBA 094 PDA 013 PBH 254 PBH 254 PEB 171 PLB 060 Description Weight assembly Tone arm assembly EV sheet assembly Stopper Spring Cramper EV sheet unit HS 3x5 Base A Screw Sensor board Spacer Cds PM2 6x6 Tracking shater 2 6 5 Terminal FW2 6x5x0 5t PM2 6x6 Cupler base Lamp Sensor board 26 8 2 6 8 3x5 Shutter Washer faced alutite screw 3 x 6 Plate Pin unit Screw Shield tube Spring Spring Rubber pad Screw Kev No 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 e Parts without part number cannot be supplied Part No PBE 017 PXB 121 PNC 145 PLB 046 PXB 120 PLB 047 PBE 017 PXB 120 PLB 059 PXB 121 PXT 394 PEB 158 PAD 064 PBH 255 Description Base B Washer Bearing Spacer Roller Bearing Shaft Magnet Washer Bearing Shaft holder A Bearing Shaft holder B unit Rubber cap EV adjust screw EV spring EV shaft Plastic washer 4 x 0 13t 49 10 3 EV MECHANISM Parts List Key No Part No 1 2 018 3 014 4 PNW 418 5 PNW 390 PDE 068 6 7 8 PSF 005 9 0 PEB 097 Description EW3 Washer Washer Gear F Plate Cam PT 2x10 Microswitch Connector assemblv Belt PL L1 10 e Parts without part number cannot be supplied PNW 393 PNW 391 PNW 485 PNW 391 PNW 392 PEB
18. damper bearing NO Defective circuit or lead wires Defective index adjust ment Defective driver E ass y Defective damper bearing PL L1 aa PL L17 10 EXPLODED VIEWS 10 1 EXTERIOR 45 Parts List of Exterior 3 20 21 Ay 22 23 24 24 1 24 2 24 3 244 Part No Description Washer faced alutite screw 3 x 8 Cover PRW 068 Caution label PNR 126 Panel Control case assembly PAD 058 Push button unit A PAD 059 Push button unit E PAD 060 Push button unit C PNX 135 Control case A CS type washer 20 PDE 065 Connector assembly GL 2PR1 LED Washer faced alutite screw 3 x8 P C Board PT3x8 PBA 104 Screw PNX 092 Lever Switch base Washer faced alutite screw x 8 PSG 017 Push switch Washer feed alutite screw 3 x 6 PEC 052 HET HBT Insulator PSF 012 HET HBT Microswitch PSF 008 S G 22 PSA 3 15 HET Plastic screw 3 x 15 S G PSA 3x 15 PTT 097 HET HBT Power transformer PTT 100 S G PSB4x8 PSB 002 HET HBT Line voltage selector PSB 007 S G Washer faced alutite screw 3 x 8 Controi case B assembly PAD 061 Push button unit B PAD 062 Push button unit D PAD 063 Push button unit F PNX 130 Control case B CS type washer 29 Washer faced alutite screw 3 x 8 PDE 071 Connector assembly P C Board PT3x8 PWR 057 Power supply assembly HET HBT PWR 058 S G PDE 067 Co
19. 2 6 01 wey 1 Ta Q O ri 330 33 1 2W X TAL 88 EL gt tz m 2 42M 56p U LU X TAL PSS 003 L N 6 L ATO z PK m am 6 3 IA N 5 2 I VRI OPERATING POINT ADJ 45 PCP 031 9 I NJM2903D VR2 OPERATING POINT ADJ 33 5 dE s REG ie PCP 012 tor a c Eu 125 40138 1 6 TD62504P 10k R33 26 If Me 02 3 25 945 735 R28 18k MI ICT 54517 perg om G 1 4 H peg 45 DHO 53 4 PSG 022 53 33 45 27 2 130 40 WHT 206 GL 2PRI TIMING ADJ 049 0207 N REPEAT R37 2 DLO 1 E UP 3 98 R38 1 2 4 0209 fei o R39 1 2 e7 BLK gt BLU EX urlo 2 CONTROL B Ass y gt XWX 04 EHO 1 8 Oe wam a 9 6 G 2 RC E kas RERUM L Pr m l 305
20. 25 CEA 100M 10NP CKDYF 1047 50 OTHERS Part No PSS 003 112103 2 Symbol amp Description C15 C16 C18 C24 C28 C32 C38 C46 C52 C19 20 22 C27 C31 C45 C29 C33 C34 C39 C41 C36 C37 C43 C48 C49 Ceo C62 Symbol amp Description X tal TH2 Parts List of Power Supply Assembly PWR 058 Part No uPC78MD8H 250686 010 52 10 BZ 250 RS2PF102J PCL 005 CEA 471M 25L CEA 471M 50L CEA 101P 10 CEA101M 35L CKDYF 1032 50 CCDSL 101K 50 PNM 013 PNX 015 PBA 089 Symbol amp Description IC101 Q101 D101 D102 D103 R101 C101 0 047 450 C103 C104 C105 C106 C107 C108 C109 Spacer Spacer Screw Parts List of Lamp Assembly XWX 040 Part No PEL 041 70 Symbol amp Description PL1 8V 70mA Parts List of LED Assembly XWX 042 Part No Symbol amp Description TLR 121 D301 D305 RD PS 103 R301 Parts List of Cds Assembly XWX 041 Part No Symbol amp Description PCX 051 Cds Parts List of Photo Tr Assembly XWX 043 Part No Symbol amp Description TPS605 0301 0305 Parts List of Control Assembiv XWX 044 Part No Symbol amp Description GL 2PR1 D201 D206 PSG 022 53 54 Parts List of Control Assembly XWX 045 Part No Symbol amp Description GL 2PR1 D207 D209 PSG 022 55 57 PIONEER ELECTRONIC CORPORATION 4 1 Meguro 1 Chome Meguro ku Tokyo 153 Japan U S PIONEER ELECTRONICS CORPORATION 85 O
21. 5605 ar pm ia PHOTO Tr XWX 043 0302 0305 0503 LED Ass y REST 30 25 17 END mes 250686 SUPPLY PWR OS8 tp 0 047 L e 003 82 250 7280 2 8 CY cos A I I ik 5 100p 50 i 1 MET i 0103 H 100 1 0101 SIRBATO Sw A 5101 POWER im PSF OOB AC POWER 220 240 v VOLTAGE SELECTOR 258 007 240v 220v 120V 1 RESISTORS Indicated Q 5 tolerance unless otherwise noted k 19 G 4286 1096 tolerance SWITCHES 51 0 DETECTOR ON OFF 2 CABACITORS S2 DOWN DETECTOR OFF Indicated in capacity uF voltage V unless otherwise noted p pF YD Indication without voltage is 50 except electrolytic capacitor 222526 A 3 VOLTAGE S5 REPEAT ON OFF 3 DC voltage V at no input signal S6 ARM ELEVATION DOWN UP ST START STOP START STC 4 OTHERS 5101 POWER ON B Adjusting point hi rlined indicates the switch positi The mark found on some component parts indicates the im The underlined
22. FF and Return FF Lead in FF This FF is set by pressing the S S START STOP switch when the tonearm is on the arm rest and is reset by a descend signal or when the power switch is turned on This FF is set by pressing the S S switch when the tonearm is not on the arm rest and also by the end detector It is reset when the power is turned on or by the descend signal or when the tonearm returns to the arm rest b When either of the above 2 FFs has been set an AUTO on signal is generated as well as AUTO on resulting in the arm elevator being set to the UP position and inhibition of manual drive 52 END DETECTOR STAGE The end sensor input signal is rectified and then applied to the detector stage consisting of a dif ferential circuit integration circuit and a mono stable multivibrator When the detector stage detects the arrival of 2 consecutive input signals within the fixed time constant period an output signal is generated This output however is inhibited by the EV UP signal when the arm elevator is in the UP position Integrat Circuit Differential Circuit Return FF 1 06 18 INPUTO QOUTPUT O EV UP signal Fig 5 1 53 ARM ELEVATION CONTROL STAGE This stage consists of a J K tvpe FF with a reset clear input and preset input The arm elevator is raised UP position as a result of the initial resetting or bv the AUTO operation signal from the tonearm c
23. H qay om gt lt 4 0203 145 LG 1 9 TC40238P l ICIO 53 OO 1 ie TIS B 020i 206 GL 2PRI D2 1 151885 SOL TIMING ADJ WHT 02 049 2 1 1 OTPI3 GNO OH R37 1 2 2 BRN pri SS REPEAT n ot 5 son 1614 5 1 6 R45 tk se 3 1 me 1 7 s7 ES 5 5 5 VLT 8 2 CONTROL B Ass y XWX 04 ek 9 gt 8 Xx gt Y c gt m lt 2 M a Y L p 6 e JRED Lu 9 gt an fa aso 305 5 6 PHOTO Tr Ass y XWX 043 0301 0302 0303 1 LED Ass v REST 30 253 17 END 042 5 0301 305 TLRI21 1 0304 0305 MOTOR Ass y PXB O61 5 0 250686 POWER SUPPLY Assy PWR O57 0 047 7450 0102 52 10 0103 82 250 CdS Ass y XWX 041 82 081 ns 22 uPCT8LO8 o 220 8 5 _ _1400 250v LAMP Ass y Sw WHT A 5101 POWER Mum PSF 012 SA BLU 220V 3 VOLTAGE 4 OTHERS B Adjusting point mark found on some component parts
24. Readjust the platter mounting Clean the guide bar Is the platter perfectly horizontal Does the guide bar need cleaning Do the roller and damper bearing operate without gouging YES NO Defective roller damper bearing YES Are the lead wires in the Return the lead wires to correct position the correct position YES Does the swing plate move without gouging Defective swing plate Return to section 1 d Does the arm move too freely NO Lowering position properly adjusted not 43 9 2 15 Tonearm fails to lower on to record after stop ping at lowering posi tion or if it does lower onto the record it con tinues to trace the same one groove Is the platter perfectly Readjust the platter horizontal mounting YES Does the lowering position NO Defective sensor sensor function properly YES Stopper unit stopper rub ber or plunger rubber needs readjustment Does stopper unit rub against the plunger spring Stopper unit position needs readjustment Defective plunger Defective index bar or adjustment bearing Does index bar tend to gouge NO Does the index plate move normally when plunger is turned on and off YES Defective circuit 9 2 16 Return failure Does the elevator operate normally YES Is there gouging in the
25. as a rising edge clock pulse thereby activating the ring counter in IC15 Asa result Q1 H and 92 L The 30cm indicator lamp is turned off and the 25cm indicator lamp turned on If the size selector is pressed again the 17cm indicator lamp is turned on Every time the selector is pressed the size is switched in a cyclic order 30 gt 25 gt 17 1 5 REPEAT CONTROL STAGE When the power is turned on the intial reset signal from R55 C29 is applied to pin 8 of IC14 resulting in pin 10 of this IC being switched to H level and pin 1 Q of IC12 being switched to L level The repeat indicator lamp will thus be turned off since Q L If the repeat switch is then pressed a falling edge differential pulse will be applied to pins 5 and 6 of IC17 and rising edge clock pulse generated at pin 4 As long as the repeat or return modes are not operative at this time pin 5 K and 6 J of IC12 will both be at H level resulting in Q H and Q L for the repeat indicator to be turned on At the same time pin 13 of IC13 is switched to L level therebv enabling the monostable mul tivibrator consisting of 2 gate circuits in IC13 to operate during repeat If the repeat switch is then pressed again the 4 status will be inverted In addition to the above repeat control stage The START STOP switch may be pressed to activate return mode In this case a falling edge pulse is generated on pin 4 of IC10 an
26. be clamped by the voltage determined by D7 and D8 or D5 and D6 When the differential amplifier is activated one side of Q6 is turned on according to the rotational direction of the dial resulting in a voltage drop across R93 or R94 and the generation of a potential difference between TP8 and TP10 This is subsequently ampli fied and results in a current being passed through the coil to move the carrier Coil current PL L1000 Fig 6 5 7 ADJUSTMENTS Adjustment position 3 VR1 VR2 Fig 7 1 ea Preparation 1 2 3 Disconnect the panel according to the disas sembly method outlined earlier Use extension leads to connect the panel to the printed circuit board located in the base section Remount the turntable platter but without tightening the securing screws 7 1 D D MOTOR OPERATING POINT ADJUSTMENT 1 Connect the TP1 and TP2 terminals to the CH1 and CH2 inputs of a dual trace oscilloscope Start the turntable platter turning by shifting the tonearm over towards the center of the record from the arm rest position Observe the waveforms in the oscilloscope and adjust the corresponding controls so that the rising edge of the TP2 output waveform lies within the TP1 output waveform VRI is the control to adjust for 45rpm speed while VR2 is the control for 33rpm adjustment 10V a TP2 Fig 7 2 7 2 AUTOLEAD IN TIMING ADJUSTMENT 1 2
27. of the elevator DN And since H the DN indicator lamp will be lit up and the UP indicator turned off The DN detector switch remains in the NC position until the elevator is right down During this period pins 9 and 8 of IC17 will be both at L level while pin 10 of IC17 will be at H level The elevator drive stage Q14 and Q15 will thus be on and the motor rotating If the elevator switch is pressed during this condition Q will switch to L and Q to H UP to reverse the motor The above description relates to the opera tion of the elevator circuit itself In addition automatic mode UP as described under the tonearm control stage and DN at the lowering position may be controlled via the elevator FF preset and clear terminals PL L1 OOO 6 1 4 RECORD SIZE SELECTOR STAGE When the power is turned on the initial reset signal from R55 C29 is passed to IC16 to Switch pin 11 to H level resulting in IC15 being cleared Pin 1 Q1 and pin 15 Q2 of IC15 are both switched to L level this then being trans ferred to pins 8 and 9 of IC18 Pin 10 of IC18 is thus switched to H level and the 30cm indicator lamp is lit up If the size selector is then pressed the falling edge differential pulse applied to pin 13 of o IC18 when pin 12 of this IC was at L level i e when none of the lead in return or repeat modes was operative is instead applied to pin 11 of IC18
28. resistors first convert re NO the following examples Ex 1 When there are 2 effective digi and 47k ohm tolerance is sh 5602 56 10 47k 1 47 x10 0 50 085 1n Ex 2 5 6269 When there are 3 effective dig resistors sistance values into code form as shown in its any digit apart from 0 such as 560 ohm own by J 5 and 10 561 gus RD APS BOJ 473 RD APS 1 J pS SR le aud A ORG K udis tele RSIP OMG K its such as high precision metal film 562x10 5621 RNWSR DAHA e The mark found on some component parts indicates the importance of the safety factor of the part Therefore when replacing be sure to use parts of identical designation Parts List of Control Assembly PWM 032 SEMICONDUCTORS Part No PD1003 PA2004 PA2005 NJM2903D JC4013BP TD62504P M54517P TC4001BP TC4023BP TC4011BP 4027 TC4069UBP 4558 uPC78L08 25 945 25 1815 25 1583 28C1626 2SA816 25 562 25 1959 WZ 085 151885 152473 VD1212 RD24EB WZ 150 Symbol amp Description IC2 IC3 IC4 IC5 IC6 IC7 ICB 1C13 IC17 IC18 1 9 IC10 1C11 1014 1 12 1815 1 16 1020 1821 1622 01 05 Q7 08 06 09 011 010 012 013 014 015 016 Di D2 03 D4 06 D8 D10 014 015 D5 D7 D12 D13 PL L1000 pe RAR ASSEMBLY Note When ord
29. rotate if it has already been moved away When the START STOP switch is then pressed with the tonearm on the arm rest Pin 8 of IC8 is switched to L level Pin 10 of IC8 is switched to H level and this appears at pin 3 of IC10 resulting in the lead in FF being set and pin 10 of IC10 also being switched to H level Once pin 10 of IC10 is switched to H level pin 3 of IC8 is switched to L level resulting in pin 8 of IC11 being likewise switched to L level thereby inhibiting manual drive locate operation Pin 13 of IC14 is also switched to L level resulting in pin 12 of IC12 being switched to H level and the elevator being consequently raised to the UP position Pin 4 of IC11 is switched to H level result ing in the inhibition of any further START STOP switch inputs after a delay of about 1ms in order to prevent the return FF from being set when the tonearm leaves the arm rest At the same time pin 12 of IC18 is switched to H level to inhibit switching of the size selector Hence the relevant FFs are set the arm elevator raised and record size selector switch ing inhibited PL L1 OOO Pin 11 of IC10 is switched to L and this is transferred to pin 6 of IC8 Once the elevator is properly in the UP position the UP detector switch is switched to the NO position resulting in pin 5 of IC8 being switched to L level and pin 4 of IC8 switched to H level This IC8 pin 4 H level signal then tu
30. to H level during the above H Defective to L level switching YES Defective IC7 or defective plunger 9 1 9 Tonearm fails to stop at designated lowering posi tion Are pins 11 12 and 13 of IC9 switched from H to L level when the tonearm passes the desig nated lowering positions Defective sensor circuit board Is TP3 switched to H level during the above H to L NO level switching Defective IC7 or defective plunger Defective IC13 9 1 10 Tonearm fails to move Does a voltage difference of at least 1V appear be tween TP8 and TP10 when the tonearm is moved back and forth Is there a voltage dif ference between TP9 and TP12 around 10 to 15V Defective IC21 Defective drive coil De fective drive transistor Incorrect magnetic polari ty Defective tracking sensor stage defective lamp or CdS element or discon nected lead wire Defective CdS element disconnected lead wire dislodged tracking sensor Has the zero adjustment been properly performed Correct carrier inclination to horizontal position Proceed with zero adjust ment PL L17 OOO 9 1 12 Phono motor fails to rotate T Is rest sensor working NO Defective rest sensor YES Do pins 1 and 16 of Defective IC6 Defective IC6 respond correctly to IC16 or IC
31. way as to eliminate tracking error ie to avoid the generation of tracking sensor outputs End detector Lowering position detector PL L1 5 10 D D MOTOR CONTROL STAGE AND D D MOTOR STOP CONTROL The phono motor stop control stage stops the motor when the rest sensor detects the presence of the tonearm back on the arm rest As long as the tonearm remains off the arm rest the motor will continue to rotate The phono motor control stage employs 3 specially designed ICs PA2005 PA2004 and PD1003 These control stages also include the speed selector speed indicator and quartz lock indicator circuits 14 PL L1 OOO 6 CIRCUIT DESCRIPTIONS 6 1 FULL AUTO LOGIC 1 1 I I 5 EE 1 LEAD IN RETURN START STOP T REPEAT v Sw 1 2 I E I 3 I I D301 Lye EN TLR121 9301 152473 7 TPS605 0 ARM REST SENSOR i ON ARM 1 35 VRA END ON ARM arenes RESTJOUT OF 680k B DETECTOR ADJ OUT OF ARM REST ARM REST 8v 06 015 2 ARM R66 OUT OF ARM OUT OF M REST 560k ON ARM REST ARM REST H al 18 R67 5 R60 100k 15 35 5k TPA EV DOWN 030 1 R59 SIGNAL TLR121 Q305 od U 7 5605 ik VR9 16 END SENSOR 3 3K B x2 RIO 33 Sw T HE ANA RIOO 27k 0 01
32. 11 the rest sensor output Is there a 10V output on 9 j pin 15 of PA20057 nected to pin 15 Is there a voltage dif ference of 0 5 to 1V be tween pins 16 and 18 of PA2005 Is there a voltage of about 1 5V on pin 19 of Defective PA2005 PA2005 Defective PA2004 Defective Hall element de fective Hall element resis tors R101 R103 or defective PA2005 Are each of the Hall element output terminal voltages about 4V Turn the power off and check the resistance across pins 1 and 2 1 and Defective armature core 3 and 2 and 3 of unit PA2005 Do they read about 45 Defective PA2005 35 9 1 13 Quartz lock failure Is there a 10V output at pin 15 of PA2005 Defective PA2005 or de fective surrounding com ponent Defective crystal oscillator PD1003 YES Is there a 27 78Hz signal at 33rpm of 10V ampli tude and 0 66ms pulse width at pin 15 of PD1003 YES Operating point out of adjustment 9 1 14 Defective quick stop operation Defective PA2005 or de fective surrounding com ponent Is there a 10V output on pin 15 of PA2005 Does the stipulated voltage register on pin 10 of PA2004 Defective PA2004 YES Is there a differential pulse on pif 13 of PA2005 Defective C33 component Defective PA2005 R12 or C17 Does a
33. 167 PXM 073 Description Pullev Collar Worm gear Collar Chassis PSA 2 6x5 Frame Motor pullev Tube Motor PL L1000 10 4 BOTTOM PLATE D D e 19 3 22 0 9 UN N N 2 N N pc ee 58 51 50 Parts List of Bottom Plate Kev No 16 17 18 19 20 21 22 23 24 25 26 27 28 30 061 102 PBH 169 PNW 375 PNW 483 PBA 105 PXT 392 PNX 108 PXB 118 Description PSA 4 x 16 Motor assembly PSB 4 x 16 Balance weight PT3x12 Cord clamper Under base Rubber cushion A Spring C Spring holder Case C Screw Case unit PM3x5 EV gear EV mechanism assembly Ew 6 Ew 3 PSB 4 x 16 Adjust shaft holder PSB 4x 12 SF3x5 Base B Plate Coil cover Coil assembly Plate Plate Bar PSF 3x6 PT3x8 Sensor board PSB 4 x 12 2 6 x 6 PM 2 6 x 8 Base A SF3x5 PSB 4 x 16 Key No 41 42 43 44 45 46 47 48 49 50 51 52 53 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 PL L1 OOO Parts without part number cannot be supplied Part No PDE 066 PXB 119 PXP 003 PLB 050 PLB 051 PLB 067 PEB 155 PBA 107 PEB 170 PBH 252 PDE 074 PEC 051 PWM 032 Description Case Washer faced alutite screw 3
34. 18 E 106 25 1626 671 254816 2005 1 20 pPC4558C R78 27k 981 4 7k R79 4 7 We B tap ard os 22 25 1583 Lot No hre 78 8 Lot No 2SD686 l mera uPC78L08 57 AEE 13 P C BOARD CONNECTION DIAGRAM HET HBT MODEL POWER TRANSFORMER LINE VOLTAGE SELECTOR POWER SUPPLV Ass v PWR 057 S101 POWER SWITCH AC220V 240V 50 60Hz BLK WHT MOTOR Ass v PXB 061 RED WHT 6 1 a B augue BRN WHT CdS Ass y XWX 041 58 PL L17 EN 2 1 B RR SP VIODEL 2 Ass v 118 CdS Ass v XWX 041 LAMP Ass y PHOTO Tr Ass y XWX 043 XWX 040 tne Aw 07 vot212 33k END SENSER 4 SIZE L3 0206 0205 0204 0203 0202 33 45 0201 eu Te Tun CONTROL A Ass v XWX 044 RED D207 209 GL 2PRI 0207 M REPEAT CONTROL B Ass y XWX 045 DRIVER E Ass y 1 IS2POWER 4 14 PARTS LIST OF HET HBT MODEL TE When ordering
35. 2 DIO D9 45 05 152473 xa BJ 1S2473 1S2473 PXM 076 MAX 2 7 R79 47k 47k MAX Q5 3 6mA gt MAX 3 6mA 100k l Full auto section Q4 7 Q4 5 M 25 945 24V 25A671 Bor C deus 55 1061 lt 2 9 10 35 Ga ks 25 1626 0 MW lt gt CM LM 1 MAX BE 2 1 22 3V Coil Ass v I lot 24 V 118 I R 73 50 ot 25 lt 4 within several mV error 4mm 1 25V ref Fig 6 4 Arm shaft 1 28910 5120 0 152473 ka TP8 G TP10 volt Fig 6 4 PL L1 The tonearm drive stage contains the following 3 major component circuits 1 Tracking sensor circuit 2 Tonearm drive circuit 3 Manual operation circuit locate operation circuit 6 2 1 TRACKING SENSOR CIRCUIT An outline of the tracking sensor circuit is shown in page 21 When the stylus is positioned exactly at right angles to the carrier the lamp beam is directed practically equally onto both CdS elements which means that the resistance in both elements will also be more or less equal These 2 elements form part of a Wheatstone bridge with R93 R94 and this latter variable control being adjusted so that no potential dif ference is generated across TP8 and TP10 when the stylus is located at right angles to the carrier If the stylus should happen to mov
36. 62TM Y 25 1959 WZ 085 151885 152473 VD1212 RD2 4EB WZ 150 Parts List of Control Assembly PWM 032 SEMICONDUCTORS Symbol amp Description 2 1C3 1 4 1 5 ice IC7 1 8 1 13 IC17 1 18 1 9 1C10 C11 1014 1C12 IC15 6 1 20 1 21 1C22 01 05 Q7 08 Q6 Q9 011 Q10 012 013 014 015 016 D1 D2 D3 D4 D6 D8 D10 D14 D15 D5 D7 D12 D13 Note RESISTORS Part No RD PS J RN1P2R2J RN PS 1301 G RSIPF 681 PCP 031 PCP 012 PCP 049 PCP 037 PCP 048 PCP 047 PCP 038 PCP 001 CAPACITORS Part No CCDCH 330J 50 CCDCH 560 50 CKDYF 1032 50 CEA 100P 16 CEA 101M 6 3NP CKDYF 4032 50 CKDYB 681K 50 184J 50 CSZA R47M 35 COMA 104K 50 When ordering resistors convert the resistance value into code form and then rewrite the part no as before Symbol amp Description R1 R10 12 831 R33 R53 R55 R92 R98 R104 R110 R11 R93 R94 R97 6 8K B VR2 10K B VR3 680K B VRA 680K B VR5 VR6 33K B VR7 220 B VR8 330 B VR9 3 3K B Symbol amp Description C1 c2 C3 C5 C13 C50 51 C53 C61 C4 C25 C35 47 C7 C8 C23 C9 C10 C17 C26 C11 C12 C14 C40 69 Part No CSZA 100M 16 CQMA 563K 50 CEA 010P 50 CEA 101 351 CEA 470M 25NP 273K 50 CEA R47P 50 CSZA 1R5K 50 103K 50 CEA 4R7M 25NP CSZA 3R3K 10 CSZA 010K 25 CEA 100P
37. Consumption 35W Dimensions 494 W x 154 H x 456 D mm 19 7 16 W x 6 1 16 H x 17 15 16 D in Weights se Gad AG eA 12kg 26lb Accessories EP Adapter x el e 1 ScrewdriV8r osse sd t pasta Agi 1 Overhanggauge 1 Level dose e voe RE RU 1 Cleaning cloth 1 Cartridge mounting parts HET HBT models only Cartridge mounting screws 6 Cartridge mounting nuts 2 Cartridge mounting washers 2 Cartridge PC 600 S G model only 1 Operating instructions French and German furnished on models for 1 NOTE Specifications and design subject to possible modification without notice due to improvements 2 PANEL FACILITIES 49 Platter Rubber platter mat D Power switch 2 Quartz lock indicator 8 SPEED switch 4 DISC SIZE switch 8 REPEAT switch 8 ARM ELEVATION switch 7 START STOP switch Remote operation knob D POWER SWITCH Used to switch on and off the power to the turntable Power is supplied when the switch is depressed ON The SPEED switch indicator 33 comes on The power is switched off when the POWER switch is released NOTES e The platter does not rotate when the tonearm is positioned at the far right even if the switch is depressed and the power supplied e With each push this s
38. OR When the tonearm shutter passes between the sensors corresponding to the designated record size sensors being mounted in positions corres ponding to each record size a lowering position detector output signal is generated This signal is then applied to the plunger control stage a mon stable multivibrator resulting in a fixed time constant pulse signal being generated to activate the plunger during lead in and repeat modes The down stroke of the pulse signal is differentiat ed and a descend position signal generated Each of the tonearm control stage FFs is also cleared 5 7 DISPLAY STAGE AND PLUNGER DRIVER This stage is responsible for the LED display of elevator position repeat mode and selected record size in addition to plunger drive 13 5 8 MANUAL DRIVE STAGE Bv amplifving the input to the power generator motor mounted in the locate stage the tracking sensor stage balance is upset permitting the tonearm to be moved back and forth Such operation is inhibited however when the elevator is DOWN during auto operation modes lead in return and repeat 59 TRACKING SENSOR STAGE AND TONEARM DRIVER STAGE The tracking sensor stage consisting of lamp CdS element and shutter generates and voltage differences in response to tonearm move ment These output signals are then applied to the driver stage where they are amplified and to pass a current through the drive coil to drive the tonearm in such a
39. Switch FLip Flop EV Elevation Tonearm 9 TROUBLE SHOOTING 9 1 CIRCUIT BLOCK 9 1 1 No elevator operation in operan VES Recheck after completion NO of present operation Is 15 of IC12 invert ed everv time the elevator switch is pressed YES Is there a voltage applied across the elevation motor terminals Defective elevator FF IC12 Defective elevator motor drive stage Defective elevator mecha nism N Is there any fault in the elevator mechanism Dislodged belt or poor gear inter meshing YES Defective elevator motor 9 1 2 No repeat switch on off switching Return or repeat mode in NO Is pin 1 of IC12 invert ed every time the repeat switch 1s pressed YES Does the LED lamp light up when pin 16 of IC7 is connected Detective IC7 Recheck after completion of present operation Defective repeat FF Defective LED PL L1 29 9 1 3 No record size selector switching Auto mode in operation 2 Is pin 10 of IC18 and pins 1 and 15 of IC15 switched to H level everv 3rd time that the record size selector switch is pressed YES Do the corresponding LED lamps light up when pins 11 12 and 13 of IC7 are connected separate ly YES Defective IC7 No 33 45 switching Is pin 13 of IC5 inverted eve
40. d then applied to pin 8 of IC14 Pin 10 of IC14 is thus switched to H level and the IC12 FF cleared repeat off resulting in Q Land Q H 19 When the return FF is set during return or eo repeat mode pin 9 of IC9 is switched to L level this being transferred to the J and K terminals of the repeat FF thereby inhibit ing any inversion 6 2 TONEARM DRIVE 24V TP8 TP9 Q Q 1c22 pPC78LO8 Tracking 0 15 4 16 8V Io SHORT 15 12 5 VRB l R87 3 680 B Tracking 56 sensor 2 AA 0 adj 4 R94 R93 PosIW Di L2k I 2k TPIO R89 egy 77 85 Tracking YR WA 220 B 0 05 96 C 82 081 10 25 MAX 7 i C5 054 2 adj 22 3V t TP 1 EMIT mr R90 0 01 O at Vcc 24 8 2k C50 0 01 I 8 v I R88 68k TH 2 3 Cds 1 ju PEL 041 osi 5 3mA 10k 25 C PESOS 24V PCX 054 ST EE R86 Tracking sensor Tracking 0 5 100 VR5 33k B Lead in speed adj R99 1 18 Tracking 0 within several mV 97 Tracking error 4mm Full auto section 1 2 1 25V ref Fig 6 4 56k 2 Gain of 25 C Q7 8 T 8118 28 18 1 20 0 25 945 8k 0 13mA Q8 Full auto section 4 R92 42 G a 8V 3 25C1583 F R80 47k R82 4 7k AM 1 5 200r RBS pm 220 7mV rpm 210 C36 47 2
41. delta wave signal appear at pin 14 of PA2005 when the turn table is rotated by hand Defective PA2005 PL L 17 9 1 15 Is there a 10V output on pin 15 of PA2005 YES Is there a 55 5Hz square wave signal on pin 5 of PA2004 when the motor speed is held to 33 1 3rpm by hand Defective PA2005 or sur rounding component Is there an input from the FG circuit board YES Defective PA2004 or de fective R3 R4 C6 C8 component Defective wiring or de fective speed detector cir cuit board Is there a 55 5Hz square wave signal on pin 10 of PA2004 when the mo tor is held to the same speed 33 1 3rpm in the same way again YES While measuring the volt age between pins 12 and 14 of PA2004 with the motor stopped by hand let the motor speed rpm increase gradually Does the voltage vary gradually from 0 5 to T2V Defective PA2004 Is there a 27 78Hz signal at 33 1 3rpm on pin 15 of PD1003 Defective PD1003 Defective PA2004 or related component Is there any abnormality in the waveforms observed in the oscilloscope see ac companying diagrams when measuring the wave forms at each of the Hall element output terminals while keeping the motor speed steady at 33 1 3rpm Defective Hall element or Hall element resistance YES Defective PA2005 Hall element output
42. down on the clamp When you do not intend to use the turntable secure the tonearm in this way The tonearm is released when the clamp is raised ARM REST This secures the tonearm pipe When playing a record rotate the arm rest counterclockwise and release the clamp When not playing a record set the arm elevation switch to UP Y and then rotate the arm rest clockwise and secure the pipe NOTE When the arm elevation switch is at DOWN the tonearm pipe cannot be secured Make sure this switch is set to the UP Y position 2 PLATTER RUBBER PLATTER MAT When the tonearm is moved and power is supplied to the turntable the platter will start rotating at the set rotation speed The rubber platter mat stabilizes the records and also absorbs external vibration 49 DUST COVER Keep this closed untess operating the controls or tonearm or changing records This serves to keep dust off of the re cords during record play When fully opened and pulled straight up this dust cover can be removed from the cabinet 3 DISASSEMBLV 3 1 PANEL 1 Remove the 4 insulator mounting screws 2 Remove the top cover 3 Shift the tonearm across to the center 4 Lift the panel up and disconnect the 3 con nectors from the printed circuit board below Insulator mounting screw Fig 3 1 PL L1 OOO 3 2 D D MOTOR 1 Remove the 3 D D motor securing screws 2 Disconnect the D D motor connector Securing screws
43. e to either left or right the amount of light striking the CdS elements will change resulting in the resistance of one element being increased and the resistance in the other element being decreased A potential difference will thus be generated across TP8 and TP10 The relation between stylus movement and the potential difference generated is shown in grasp form in Fig 6 4 VR7 is used for adjustment purposes When the stylus is positioned at right angles to the carrier the bridge is balanced and the carrier remains stationary f the stylus should tend towards the left of the carrier a potential will be generated across 8 and TP10 This signal is amplified in the tonearm drive circuit sec 2 2 below result ing in a coil current to move the carrier to the left During record trace or when moved to the left by hand If the stylus should happen to tend towards the right a potential will be generated across TP8 and TP10 After amplification in the tonearm drive circuit the resultant coil current serves to move the carrier to the right During record trace or when moved to the right by hand During lead in Q is turned on and a current is passed from R93 to R99 via VR5 A potential difference is generated between TP8 and TP10 by the voltage drop across R93 resulting in the carrier being moved to the left Speed is controlled by adjusting the current passing through VR5 22 During ret
44. embly PXB 118 D D motor PXB 061 Control assembly PWM 032 10 5 BLOCK DIAGRAM 11 8v 8v 33 45 Sw DK Rest sensor START STOP sw D K End sensor EV Sw SIZE REP Sw 5 22 Su Chattering protector Chattering protector Chattering protector 30cm PL L1 OOO O 1 33 45 QUARTZ 1 Ba ues RED 055 D D motor control a ud 1 1 i E SY Tracking sensor power D D motor supply stop Lead in Return repet Tonearm control 17 End signal Display driver mem y i Snoop ass EV motor E drive g 8 9 ifa Lowering signal gener Lowering positi Repeat control control Lowering position detector D D motor control Tonearm control Arm drive control Full auto logic Arm elevation control EV REPEAT SIZE selector input Tracking sensor power supply Tonearm drive ant WH Manual drive uP DN REP 30cm 25cm 17 Displav driver UP SW DN SW Lowering Q 1 O 1 O 1 signal 1 1 I l 1 1 1 1 I 4 gener Photo 5 1 BLOCK DIAGRAM OPERATIONS 5 1 TONEARM CONTROL STAGE a Lead in
45. ent 7 3 End Sensor Sensitivity Adjustment 7 4 End Timer Adjustment 7 5 Tracking Sensor Zero Point Adjustment 7 6 Tracking Sensor Gain Adjustment 7 7 Lead in and Return Speed Adjustment TIMING TROUBLESHOOTING 9 1 Circuit 92 Mechanism Block EXPLODED VIEWS 10 1 Exterior 1022 Tonearm of uk he ee 10 3 EV 10 4 Bottom SCHEMATIC DIAGRAM HBT model P C BOARD CONNECTION DIAGRAM HBT model PARTS LIST OF P C BOARD ASSEMBLV HBT model SCHEMATIC DIAGRAM S G model P C BOARD CONNECTION DIAGRAM S G model PARTS LIST OF P C BOARD ASSEMBLV S G modell iS eres aa 1 SPECIFICATIONS Motor and Turntable Drive System Direct drive o Rer se a US Ouartz PLL Hall motor Turntable Platter 310mm diam aluminum alloy die cast Inertial Mass 330kg cm including platter mat mass Speeds ise ki ad 33 1 3 and 45rpm Wow and Flutter Less than 0 01396 WRMS 0 025 WRMS 0 035 DIN Values marked with an 7 designate the wow and flutter for motor and do not include the cartridge or t
46. ering resistors convert the resistance value into code form and RESISTORS Part No RDXPS ano J RN1P2R2J RNXPS 1301 G RSIPF 681J PCP 031 PCP 012 049 037 048 047 038 PCP 001 CAPACITORS Part No ra CCDCH 330 50 CCDCH 560J 50 CKDYF 1032 50 CEA 100P 16 CEA 101M 6 3NP CKDYF 4032 50 CKDYB 681K 50 184J 50 CSZA R47M 35 104K 50 then rewrite the part no as before Svmbol 8 Description 2 R1 R10 R12 R31 R33 R53 R55 R92 R98 R104 R110 R11 R93 R94 R97 VRI 6 8K B VR2 VR3 680 8 VR4 680K B VR5 VR6 33K B VR7 220 B VR8 330 B VRQ 3 3K B Symbol amp Description C1 C2 C3 C5 C13 C50 C51 C53 C61 C4 C25 C35 CA7 C6 C7 C8 C23 C9 C10 C17 C26 C11 C12 C14 C40 61 Part No CSZA 100M 16 563K 50 CEA 010P 50 CEA 101M 35L CEA 470M 25NP COMA 273K 50 CEA R47P 50 CSZA 1R5K 50 COMA 103K 50 CEA 4R7M 25NP CSZA 3R3K 10 CSZA 010K 25 CEA 100P 25 CEA 100M 10NP CKDYF 1042 50 OTHERS Part No PSS 003 112103 2 Parts List of Power Supply Assembly PWR 057 Part No uPC78MD8H 250686 010 S2VB10 BZ 250 RS2PF102J PCL 024 CEA 471M 25L CEA 471M 50L CEA 101P 10 CEA 101M 35L CKDYF 1032 50 CCDSL 101K 50 PNM 013 PNX 015 PBA 089 PEA 005 A PEK 036 Parts List of Lamp Assembly XWX 040 Part No PEL 041
47. ermore when the elevator FF Q is con nected to pin 6 of IC18 to make H i e UP position the monostable multivibrator is inhibit ed thereby inhibiting the detector circuit Q H also when the power switch is turned on again in hibiting the multivibrator 6 1 3 ELEVATION CONTROL STAGE When the power switch is turned on an initial reset signal is passed to pin 12 of IC14 from R55 C29 resulting in pin 11 of IC14 and pin 14 of IC12 being switched to H level Q H This corresponds to the elevator being in the UP position or in other words UP priority is given when the power is first turned on Since H one of the IC7 transistors will be turned on to light up the UP indicator lamp Until the elevator reaches the UP position the UP detector switch remains in the NC position resulting in pins 13 and 12 of IC17 being both switched to L level and Q13 and Q16 of the elevator drive stage being both turned on to start up the motor Once the elevator is properly in the UP position the UP detector switch is switched to the NO position resulting in pin 13 of IC17 being switched to H level and pin 11 of IC17 being switched to L level Q13 and Q16 are both turned off and the motor stopped If the elevator switch is then pressed a falling edge differential pulse is generated on pins 1 and 2 of IC14 and a rising edge clock pulse on pin 13 of IC12 This results in Q H and Q L for lowering
48. indicates the im portance of the safety factor of the part Therefore when replacing be sure to use parts of identical designation TR25 FL 4 ka 1 RESISTORS Indicated 2 5 tolerance unless otherwise noted 1 G 296 10 tolerance mors PSB 002 2 CAPACITORS J DC voltage at no input signal Indicated in capacity uF voltage V unless otherwise noted p pF Indication without voltage is 50 except electrolytic capacitor SWITCHES St UP DETECTOR S2 DOWN DETECTOR 53 5 54 SIZE 5 EPEAT RM ELEVATION 57 START STOP 6101 POWER The underlined indicates th This is the basic schematic diag due to improvements in design R93 1 26 T 1 50 R94 I 2k G 7 TRACKING SENSER GAIN ADJ 047 TRACKING SENSER ZERO ADJ 032 on vre THY 112103 2 PCX 054 Q9 11 25 106 or 25 1626 QIO 12 2SA671 or 25 816 COIL Ass y PXB 118 WHTA H I IC9 TC4023BP 4 4 7144027 96 25 1583 1620 pPC4558C 878 2 05 7 01212 068 10 152473 04 5 25 945
49. mence the tonearm lead in operation 3 Adjust VR5 so that the time required to reach the 17cm position is 5 5 to 6 5 seconds 4 Then adjust VR6 so that the time required for the tonearm to return to rest from the 17cm position is also 5 5 to 6 5 seconds 2e PL L1 OOO 8 TIMING CHART 1 LEAD IN PLAY 30cm DISC SIZE l A Rest signal 22 30 Size ind I C S S SW 4 il 1 1610 10 L SWI up detector L t swz DN detector L G 30cm sensor 109 12 L t Solenoid timimg signal 83080 1C8 4 L Lead in 2 Arm operation 2 REJECT Rest signal B 30 size ind 5 5 SW D Retern F F Q 1C9 6 SWI up detector F EV SW2 DN detector G Retern signal 1C8 11 H Arm operation 3 REPEAT A Rest signal L 30 size ind L 30cm sensor 1 WV L i 109 12 D End sensor M L 4 E End detector signal L IC14 4 Retern F F Q I 109 6 L up detector H EV Sw2 DN detector L I Repeat ind L l a 2 102 timing signal I 1C13 3 L 2 25 2 55 UP K Arm operation Arm up Arm down NOTES UP Arm elevation UP DN Arm elevation DOWN 5 5 START STOP
50. nd the IC7 base resistance During this discharge period 0 3 to 0 5 sec the plunger is maintained in the attracted position but is forced back by a spring once the discharge has been completed The elevator is thereby returned to DOWN position for start of play 17 3 START STOP switch pressed when tonearm is not on the arm rest Pin 8 of IC8 is switched to L level The IC8 pin 10 change to H level results in pin 4 of IC10 being changed to L level for the return FF to be set This then results in the elevator being raised and inhibition of size selector switching S S switch input after a delay of lms and locate The L level signal on pin 9 of IC9 is transfer red to pins 5 and 6 of IC12 thereby inhibit ing inversion of the repeat FF Furthermore the IC10 pin 4 L level change is transferred to pin 4 of IC12 via pin 8 of IC14 to clear the repeat FF The purpose of the 1ms delay circuit referred to above is to permit sufficient time for the generation of the time pulse em ployed in clearing this FF In a similar fashion to the lead in operation the L level signal appearing at pin 9 of IC9 once the elevator has been completely raised is converted into an H signal at pin 11 of IC8 resulting in Q8 being turned on In this case however the TP10 potential drops below the TP8 potential resulting in the carrier being returned towards the arm rest When the shutter cuts across the
51. ned in the above block diagram has been designed to detect the presence of 2 rising edges of the Schmitt circuit output within 1 06 0 1 seconds 2 Circuit Description The end sensor is mounted at a position R49mm from the spindle When the left edge of the shutter slits reaches that position the stylus tip will be at the R62 5mm position That is there is 20mm between the 62 5mm position and the point of entry into the detection range Once the detection range is entered the sensor com mences to generate output signals with a wave form like that shown in Fig 6 1 2 above This out put is applied to the Schmitt trigger circuit com posed of 2 inverters in IC16 where it is rectified into the square wave as shown in Fig 6 1 3 This output is then differentiated by C39 R61 and applied to pin 5 of IC14 while another portion of the same output is integrated by R62 C40 and applied to the monostable multivibrator com posed of 2 NOR gates in IC18 resulting in the generation of a 1 06 0 1 sec H level signal Although this signal is applied to pin 6 of IC14 there is no detection by pin 5 because of the delay by the integration circuit If however the next differential pulse is applied to pin 5 of IC14 while the H level signal is being generated at TP5 that pulse will be detected Apart from this case there is no detection because the differential pulse involves a slight delay before switching TP5 to H level Furth
52. nnector assembly PSA 2 6 x 6 PNX 094 Base PEC 063 Nylon ball 3 PBH 257 Spring SF4x5 Washer faced alutite screw 3 x 8 e The Kev No 37 38 39 40 41 _ 42 1 43 45 46 47 474 47 2 47 3 474 48 49 PL L1 mark found on some component parts indicates the importance of the safety factor of the part There fore when replacing be sure to use parts of identical designation Parts without part number cannot be supplied Part No PXT 403 PNW 338 PNW 339 PDG 021 HET HBT PDG 004 S G PEC 051 HET HBT E32 056 S G PXA 463 PNB 105 PNV 035 PEA 036 PXB 134 PNR 121 51 PNX 108 PLB 051 PLB 050 PLB 067 PXT 391 PRW 046 Description Motor Washer faced alutite screw 3 x 8 Plate L Plate R PSB3x8 AC power cord Strain relief Angle Label Dust cover assembly Hinge assembly Plate DCM4x8 Dust cover Rubber mat assembiv Screw Turntable platter assembiv PM3x5 EV gear Guide bar B Guide bar A EV bar Dial unit Label 10 2 TONEARM 48 Parts List of Tonearm Kev No Q O NO 7 1 7 2 7 3 7 4 10 11 11 1 11 2 11 3 12 13 14 15 16 17 18 18 1 18 2 18 3 184 19 20 21 22 23 24 25 26 27 28 29 30 Part No PXA 804 PPD 601 Head shell assembly PXB 116 PNR 127 PXT 414 PNX 103 PCX 051 PNX 102
53. onearm load Signal to Noise Ratio More than 78dB DIN B with Pioneer cartridge model PC 600 Rotational Characteristics Build up Time Within 90 rotation at 33 1 3rpm Speed Deviation Less than 0 00296 Speed vs Load Characteristics Stable up to 220 grams drag load Speed Drift Less than 0 0000890 h at 33 1 3rpm Less than 0 00003 degree temp change at 33 1 3rpm Tonearm ia i RUE AD Linear Motor Direct drive Static balance tvpe Linear tracking arm Effective Arm Length 190mm sc eg Omm Usable Cartridge Weight Ag min to 24g max Arm Height Adjust Range 3mm Headshell weight 10 5g Subfunctions Auto lead in Auto return Auto cut Quick repeat Quick play Quick stop Stylus pressure direct readout counterweight Arm height adjusting device Cueing device Free stop hinges PL L1 000 Semiconductors hiq i 22 Transistors 2 cR eee eue aa 17 Diodes Tuihana Dale ea a 16 Hall Elements 3 LED cate A ay fade 14 Photo Transistors 5 GS iux ead NR pr CU d Bow 1 Miscellaneous Power Requirements HET HBT models AC220 240V switchable 50 60Hz S G model AC110 120 220 240V switchable 50 60Hz Power
54. ontrol stage The elevator descend again DOWN position when the FF is preset bv the descend signal Furthermore whenever the EV switch is pressed Q and Q are generated alternatelv resulting in the arm elevator being raised and lowered correspond inglv The FF output is applied to a logical circuit with the outputs from the elevator UP and DOWN switches the resultant output being applied to the EV motor drive stage 54 SIZE SELECTOR STAGE This stage consists of a J K FF 2 stage ring counter and the Q1 Q2 logical and gate Asa result of the initial resetting Q1 Q2 L for auto matic switching of the size selector to the 30cm position Every time the size selector switch is pressed after that the selector is switched from the 30 to 25 and 17 positions in turn and then back to 30 again Note however that switching is inhibited when AUTO operation signals are received from the tonearm control stage i e during lead in return and repeat operations 55 REPEAT CONTROL STAGE Consisting of a T type FF Q and Q are inverted by Repeat switch operation Note that the FF is also turned off by the initial reset and that there is no inversion while the tonearm control stage return FF remains set ie during return and repeat operations Furthermore the FF is also turned off as a result of auto cut operation during repeat mode 5 6 LOWERING POSITION DETECTOR PLUNGER CONTROL STAGE AND DESCEND SIGNAL GENERAT
55. play will begin auto lead in If this switch is pressed during play the tonearm will automatically return to the arm clamp position the plat ter will stop rotating and play will be suspended auto cut NOTE This switch will not work if depressed when the tonearm is moving auto lead in PL L1 REMOTE OPERATION KNOB Used when moving the tonearm by remote control Rotate counterclockwise to move the tonearm to the left Rotate clockwise to move the tonearm to the right NOTE When the arm elevation switch is at DOWN or auto lead in auto cut and auto return the tonearm does not move even when the remote operation is released and the knob rotated 9 TONEARM The tonearm function is to apply the correct tracking force to the cartridge maint in this value precisely and al low the stylus to trace the record grooves accurately The tonearm can be operated manually with your hand or remotely with the remote operation knob It is coupled to the motor switch and when it moves across to the record the platter rotates and it stops when the tonearm is re turned to the arm clamp position NOTE When the POWER switch is at OFF the tonearm cannot be moved by either manual or remote operation If it is forced at the OFF position this may result in damage so always re member to set the POWER switch to ON when moving it ARM CLAMP Used to secure the tonearm To secure the tonearm move it to the right and then push
56. rm elevator to the UP and DOWN posi tions repeatedly and also perform each of the automatic mode operations Finally set the arm elevator back to the UP position and check that the voltage across the TP9 and TP12 terminals remains below 0 35V 7 6 TRACKING SENSOR GAIN ADJUST MENT 1 Disconnect the drive coil connector and insert a piece of paper or any other light shield into the rest sensor stage and stop the DD motor rotation 2 Shift the tonearm across to any desired position above the turntable platter and then fix the rail and roller to secure the carrier 3 With the arm elevator in the DOWN position shift the tonearm across to a position 4mm to the left of the tonearm center position 4 Then adjust VR7 as to obtain a voltage of 1 2 to 1 25V across the TP8 and TP10 terminals 5 Next shift the tonearm to a position 4mm to the right of the tonearm center and check that the voltage across TP8 and TP10 varies by no more than 0 15V from the value measured in step 4 above 1 Because of the ghost tendency caused by light from the tracking sensor lamp as shown in Fig 7 8 this adjustment must be performed with care 2 Perform the above tracking sensor adjustment procedures 7 5 and 7 6 at least twice SENSOR ZERO POINT PL L1 Fig 7 7 Fig 7 8 77 LEAD IN AND RETURN SPEED ADJUST MENT 1 Set the record size selector to the 17cm posi tion 2 Press the START STOP key to com
57. rns Q7 on resulting in a current being passed from VR8 to VR5 and R99 via R93 If the potential at drops below the potential at TP10 the dif ference is amplified and a current passed through the coil to subsequently drive the carrier The carrier is thus shifted across towards the record Assume size selector set to 30cm When the carrier reaches a position about 20mm in front of the 30cm position the carrier shutter will block the light of the 30cm sensor Pin 13 of IC9 is thereby switched to L level and pin 10 of IC9 switched to H level This serves as a trigger for the monostable multivi brator incorporated in IC13 resulting in the generation of an H level signal of 2 2 sec This is applied to TP3 and pin 9 of IC12 presetting the EV FF for lowering of the tone arm The TP3 H level signal is used to drive IC7 and in turn attracts the plunger and raise the index plate The carrier continues to move further com ing to a stop when the swing pin strikes the index plate TP3 is switched back to L level 2 2 seconds later the signal being differentiated by C34 and R44 to provide the tonearm descend signal which is passed via IC17 IC9 and IC10 to clear the FFs and stop the carrier drive current The elevator UP locate inhibition and size selector switching inhibition are also cancelled at the same time As a further result of TP3 being switched to L level the charge held by C35 is discharged via R43 a
58. ry time the 33 45 switch is pressed Does IC6 function correct ly as an inverter Defective LED Defective PA2004 Defective PD1003 30 NO Recheck after completion of present operation Defective size selector FF stage IC15 Defective LED Defective IC5 Defective IC6 START STOP switch pres sed immediately after completion of return op eration 2 Wait a few seconds before pressing again Defective elevator mecha nism or defective elevator control stage Has the UP detector switch elevator me chanism been properly depressed YES Defective drive coil de YES fective drive transistor or incorrect magnetic polari ty Does the voltage drop across TP9 and TP12 read a little above 10V NO Is there a voltage dif ference of about 0 7 to 1 4V between TP8 and TP10 YES Defective IC21 Does a voltage difference exist between TP8 and NO Defective tracking sensor TP10 when the tonearm stage is moved by hand YES Has pin 10 of 1 10 jves been switched to H 1 1 Defective IC8 Q7 NO Has pin 6 of IC9 been YES switched to H level Defective rest sensor NO Defective lead in FF stage IC10 defective START STOP switch PL L1 OOO 31 Return failure Has the elevator mecha nism UP detector switch been properly depressed No auto cut
59. sensor light beam during the return motion pin 10 of IC9 is switched to H level but since the repeat mode has been switched off pin 1 of IC13 will be at H level thereby preventing operation of the monostable multivator Once the carrier reaches the arm rest position the rest sensor transfers and L level signal to pin 3 of IC16 resulting in pin 11 of IC11 being switched to L level to stop the phono motor When pin 11 of IC11 is switched to L level the charge stored on C43 is discharged via R71 the retum FF being cleared after the potential on pin 1 of IC9 is reduced to 1 2Vcc delay circuit During this period the carrier remains pressed against the arm rest 4 End detector operation When the repeat mode is off pin 3 of IC9 is switched to L level by the end detector and the retum FF is consequently set Subsequent steps are the same as during normal return mode When the repeat mode is on the return FF is again set in the same way for normal return operation However when the shutter cuts across the size sensor the plunger is activated 18 TP3 switched to H level followed by the generation of the descend signal in the same wav as during lead in The elevator is thus lowered for recommencement of plav 6 1 2 END DETECTOR STAGE 1 Detector Principle Shutter structure NT Fig 6 1 2 Fig 6 1 3 O OUTPUT Fig 6 2 That is the detector circuit outli
60. t ed 9 2 6 When tonearm shifts across and traces record groove Does the tonearm shift when the elevator is raised YES Defective tonearm NO Does gouging occur in JVES Defective damper bearing damper bearing and roller and roller NO Tonearm fails to move ives Tracking shutter not pro normally perly adjusted NO Is the platter perfectly JNO Readjust the platter horizontal mounting YES Is the guide bar clean NO Wipe clean YES Carrier base B shifts but vEs fails to trace NO Circuit not properly adjusted Defective carrier base B 9 2 7 Howling noise Has the AC cord been stretched tight NO Let the cord lie loose Have the safety screws tightened during trans port been removed YES Defective float adjustment Remove the screws 9 2 8 Turntable inclined Defective float adjustment 9 2 9 Locate dial does feel right Problem with the actual locate base Defective locate base NO Check sections 9 2 1 amp 9 2 3 9 2 10 Difference in stylus tip height when in rest position and when on the record exceeds 4mm Defective elevator bar PL L1 OOO 9 2 11 Abnormal noise from speakers e Are the lead wires arrang Set the lead wires in cor ed correctly rect arrangement 5 YE i d VES Clean the guide bar NO
61. urn and repeat modes Q8 is turned on resulting in a current being passed from R94 to R98 VR6 Consequently a potential difference is generated between TP8 and TP10 by the voltage drop across R94 thereby moving the carrier to the right In this case speed is controlled by adjusting the current passing through VR6 6 2 2 TONEARM DRIVE CIRCUIT The tonearm drive circuit consists of a current booster formed by a differential amplifier and Q9 Q12 1 Differential amplifier Consisting of a pair of op amps 6 2 3 MANUAL OPERATION CIRCUIT LO CATE OPERATION CIRCUIT When elevator not completely in UP position UP detector switch in NC position During automatic modes lead in return repeat Under the above conditions pin 10 of IC11 in the full auto logic stage is switched to H level thereby turning Q4 and Q5 on The collector voltage of these 2 transistors will thus be almost zero Current will also flow through the D10 R82 Q4 and D9 R81 routes resulting in the base of Q6 being biased in the reverse direction due to the voltage drop of Vp of D9 and 010 in respect to the emitter Q6 is this turned off to inhibit locate operation When locate dial is rotated When the motor generates power When the motor rpm is low slow rotation of the dial the amplifier gain is determined by R 1 but once the motor rpm is increased to a certain rate the gain will
62. waveforms A Normal waveform C Examples of distorted waveform but normal output level 300mVp p max Ex 1 Abnormal portion Approx DC 4V B Low output waveform AC output EX 2 Below 300mVp p Abnormal portion 37 9 22 MECHANISM BLOCK 9 2 1 Significant difference in left and right direction speeds when operating the locate dial Is the platter perfectly horizontal YES Is there any play in the tonearm ass y or elevator shaft Readjust the platter mounting YES Defective tonearm ass y elevator shaft or bearing NO 8 the ronem movemeny MES Circuit adjustment error too free NO Does the speed remain constant during lead in and return YES Defective damper bearing NO Do the lead wires below the carrier base A ass v scrape against the guide bar NO Does the carrier float 2 YES Proceed to section 9 2 2 NO Circuit not properly adjust ed YES Rearrange wires to prevent any interference 9 2 2 Does the carrier float The damper bearing has big play in it backward and forward NO Defective magnet mount ing Defective damper bearing 38 9 2 3 Irregular movement in carrier base Is the platter perfectly NO Readjust the platter horizontal mounting YES 15 the guide bar clean NO YES Does the carrier move too Damper bearing silicon has quickly been forgotten
63. witch alternates between the ON and OFF positions e Keep the POWER switch at the OFF position when you are not using the turntable QUARTZ LOCK INDICATOR This indicator illuminates when the platter is revolving at the specified rate of 33 1 3 or 45 rpm 43 Dust cover 17 Arm rest Arm clamp 9 If the platter speed varies such as when the speed switch is changed from one position to another or when vou press mo mentarilv on the platter the indicator will go off As the platter revolution returns to the specified speed the indicator will il luminate again 3 SPEED SWITCH Set the switch to this position when plaving a 33 1 3 rpm record such as an LP When it is depressed the 33 indicator lights up and the platter rotates at a speed of 33 1 3 rpm 45 Lens Set the switch to this position when playing a 45 rpm record like an EP When it is de pressed the 45 indicator lights up and the platter rotates at a speed of 45 rpm 4 DISC SIZE SWITCH Selects the switch that corresponds to the size of the rec ord you want to hear for auto play operation 12730 For 30cm records 10 25 For 25cm records 7 17 For 17cm records Used to select the record size when depressed For in stance when the 30cm indicator lights up depress the switch for the 25cm position and depress it again for the 17cm position Depressing the switch once more sets it to the 30cm position
64. x 8 Connector assembly Sensor board 8 Cramper assembly Solenoid assembly SF3x5 Washer faced alutite screw 3 x 6 Guide bar Guide bar B EV bar N3 PM3 x 12 Stopper cushion Screw Stopper unit HF 3x3 Tube Spring Output cord Strain relief Angle PT3x12 Control assembly PT3x12 PT3x8 53 11 PACKING Symbol amp Description Rubber mat assembly Operating instructions English PRD 051 HET HBT Operating instructions German French Parts List Key No Part No 1 PEA 036 2 PRB 156 3 PHA 109 4 PHA 110 5 PBA 079 B22 026 6 PHG 408 HET PHG 382 S G 7 PNX 098 8 PNX 097 9 10 11 PHL 006 12 PHC 049 sa PHN 008 HET PHN 009 HET Protector L Protector R Screw Washer Packing case Packing case Arm holder Spacer Screw PSB4x12 Screw PSB3x15 Cover Upper protector Headshell case Headshell case cover Accessories Kev No Part No PXA 804 KEX 002 N93 603 PXB 125 PEC 012 PAW 007 PED 016 Symbol amp Description Weight assembly Screwdriver EP Adapter Cartridge mounting part assembly Overhang gauge Level Cleaning cloth 12 SCHEMATIC DIAGRAM HET HBT MODEL TPI T CONTROL Assy PWM O32 MOTOR Ass y PX8 061 163 2005 R97 680090
65. xford Drive Moonachie New Jersey 07074 U S A PIONEER ELECTRONIC EUROPE N V Luithagen Haven 9 2030 Antwerp Belgium PIONEER ELECTRONICS AUSTRALIA LTD 178 184 Boundary Road Braeside Victoria 33195 Australia lt ART 517 0 gt FOOCT 1979 Printed in Japan
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