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Pioneer PR-8210-A User's Manual

1. 1 ER _ SS 008 i UAE caw i mes a a M gt 0001 bres 7 O18 5 6 16 j B TER ur R36 Em L TM n DI sa fas i vam nts 8 201 i ui pig 33 a 16 58 JUMPTRG Oc e 225 E d 4 i i SCAN A 2 D SCAN DS 13 6 ERF EAR wI R9 220 FOCUS ON l zo m VIDEO 56 Ow E AEE SCAN 4 CAVI 21 8 RES KEY IN Oe D aoo 2 3 5 c 5 FS R13 108 0 033 FOCUS LOCK Aw SPOL LOCK R97 Size 8 73 O SLOW TIMER N20 2 RBE 220 OUT Ox MA 04 R3 LASER ON Nsa 5v 220 SLOW TRG 2975 DIG STANBY LED Oa 2 Nv 2k 12 7 C41 C46 C33 C42 C40 C36 C35 C43 pe 5V 6 o wea 1 50 N20 8 901 00 0 01 0 01 0 01 0 0 0 01 N20 7 n2 10 12V Oe 4 N 20 1 7 14 220 AM S8 GATB VWG 044 o N36 5 71 22 TCA001BPor MBB4016 BM 2 6 wie c LID OPEN 290 116 220
2. 6 1X3 1N 0 l 4 833419 Snivis 31545 2 05 0 0 EN sng 1 ar 1 qp E E gt o L a E 05 O3d0l L A8 ONVLS sess Uh 4 EN 90123130 ncm e 1 52 4016 94 4300930 80109 103 wa fin ot 8313934 13938 INAS Q 19H 6 8510 5 n v100v0n D 10H1NOO W31SAS vay vsoosan 505530088 AT 9 vivo vivo q af INAS dW02 Oe EM 7081405 LN 80123130 ea 31v9 104 015 X2v8 4510 3179 don NOILISOd 4 10 0 snot UO 11 QJ L Tor O INI lt 300 _ lt 0 0 14 O N3d0 017 28 2 Individual Block Descriptions The way in which each part of the control system operates is described below in reference to the block diagram outlined in Fig 25 1 Key Matrix Six of the seven operation push buttons on the front panel of the video disc player the CX push button being the exception con stitute a key matrix Six separate commands can be sent to the transmitter 2 by push button operation c Transmitter The output from the remote control trans mitter IC M50110CP is obtained by push button selection of the output from the IC scan signal generator and subseque
3. 876 220 Oat E2 8 30 R22 NIS STEREO 220 AUDO2 1 123 220 5 2 m 5 joris Du cs CES LED Mundo 7 SP BACK ET bise DISP ra au MeO LED z LED m R8 226 xat LEGIT ROO 226 AERE OLED3 vSS CO RBZ 225 ES 4 pet TID lo 2 5 CEE t DATA ENABLE 3 5 oe 5 3 du 17 s d 61 5 18 18 i EIN NES E 5 E il cas Too t 1 SEE f kl a YCN 024 20 1 20 ut RA Pow i tor 102 21 3 22 006005 23 UD400 A 74 5 7415365 or HD74 LS 365 26 SN74LSOON or HD74LSOOP Z7 SN7ALSO2N or TC40HO02P or i HD74LSO2P 28 z9 211 212 713 244 LE 45 C16 ls 22 16 220 5 SEA Foe ien 50117 TC40828P or MB840B2BM TC4024 BP MBB4024BM TC4023BP or M8840238M TC4069UBPor MBB84069BM TC4011 BP or MBB4O BM C26 54 40K 216 TC4049 MBB84049BM 217 TC 5081P or TC SOBIAP TR 03 28C181 5 Y OTHERS 2 C1815 Y 0 GR Dt XZ 033 02 04 155153 7 SVC321B10r 01 4 PR 8210 A 4 2 22 2524 18 244 29 21627 21 26 24 713 96 os
4. EE i ee pd emee B 1 lt ro FM DRIVE IN o Q1 FM DRIVE OUT F 0 Qus 595 TRKG DRNE IN ot yg gt p3 TRKGORIVEOUT F 221 12v s Cy S pes i GND JR Lc 12 Rezo 59x SLO ORIVE IN sof xo 5 3 JXUMNOPOR SYPS vh 20 of XT 12777 VWR O0 9 TANG N TANG CUT Q i SPOL IN so u a SPDLOUT 270 INTER LOCK x3 SPDLRTN SLO POT x C FG our ols 1 5 N z GNO boot Xz 5 lt gt 9 5 gt 2V Sodzozz o 89 GNO gx a gt 3 2207 gE 2 5 2 2 LASERON u 2 EE UE gt 1 INT LOCK SW e E i EE D 185505 N20 9 lt 82273 Sw3 ubsw P SM1 A 02 DHEA SOL VXP 005 SLICE VOLUME 5 010 ANS LEO 74 PR 8210 A 000000 00000090 wany ONS t o1anv QN9 03Q1 N53 T COMP SYNC GNO N54 otsP BACK OUT DISP BACK IN GNO 5 s vtogo so 1 0 DATA V SYNC STANOBY 455 1 15 OUT OUSPW B IN SCAN C OUT SCAN C IN 5 JUMP TRIG OUT JUMPTRIG IN IR OUT IR IN 93 1018 VWG 101 5 nig 5952 x 044
5. z ol Poo 2 uoo 0 o F22 o al 2 z Ms 39NVL 01019 NIA ano INO As 0301A 21 5 Z OR AVO A19 EE MOVE 61 jno H at 9510 z AVO NYO 05 VIVO vivo gt x 123734 318743 viva asio ABONVIS o 48 ONVLS wnu10as 103034 OE or Avo INAS A 1 9559 12 94 aasa epe 8 21 321 54 72 ooa aav l 05 Me 1021 1 v 99 ul 201 1045 v1vO caa myo 2033 8 5204 1085 204 2031 037 v 204 8 21 3215 1031 H ONS 5 amp o o e 38 g 2 Si of A 6 uo Act gt 108 01S alfa ofr YN y Nay 1095 S He sio eye no MOIS o 6 MNS IHL MOS cub ug o Si o31sNv ae jazi ip p amp yt oo 21 zx gt ino 5 r HI 152 my A21 oK oHe j 031 sny 5 z o z PS o gt 75 74 PR 8210 A 11 2 SYPS LSPS AND MCNB Se pn 25595 j i P rd Sou 2 i m E i EN a eae 5 us
6. 1 ORDER NO VRT 019 0 VIDEO DISC PLAYER 8 8210 eS CONTENTS 1 SPECIFICATIONS 2 11 2 SYPS LSPS AND 76 2 PARTS CONTROLS 3 TUSUREAMUS t EM Ed 81 3 CONNECTIONS 5 114 CPCB AND 83 4 DISASSEMBLY Dieu 1 5 AUDX occ ccc ccc ea 94 5 CIRCUIT DESCRIPTIONS 9 11 6 CONT GATB AND IOIB 98 6 SAFETY CHECK 2 39 112 AND IRAB 104 t 7 MECHANICAL ADJUSTMENTS a 12 EXPLODED VIEWS AND PARTS LISTS 108 8 SLIDER ASSEMBLY AND ALIGNMENTS 45 12 1 EXTERNAL AND TOP VIEW 108 9 ELECTRICAL ADJUSTMENTS 53 122 BOTTOM VIEW 111 10 TROUBLE SHOOTING 68 123 SLIDER 114 11 SCHEMATIC DIAGRAMS PCB 13 SAFETY INFORMATION 116 PATTERNS AND PARTS LISTS 723 14 PACKING PROCESS 117 11 1 OVERALL isses ee 73 PIONEER pm PIONEER ELECTRONIC CORPORATION 4 1 Meguro 1 Ch orne Meguro ku Tokyo 153 Japac PIONEER ELECTRONICS INC Box 1760 Long Beach e 90801 USA PIONEER ELECTRONIC EUROPE Keetbenglaan 1 2740 Beveren Begum PIONEER ELECTRONICS AUSTRALIA LTD 178 184 Boundary Fload Braeside v ctor a 3195 Printed in Japan 1 10 PR 8210 A 1 SPECIFICA
7. ag x Casg 958546 47 10 Ne Bowne E 2 220 14 e 7 124 A 350 S 472 sey RSS 47K Rapt 68k bos i i Res weis puc 22 x nds ORW EN x Va ete 0 e BR 47 as R526 26 z Bok du QUALI mw 77 bd Rass 1 cud 40 bz 261 FET TR 25K30A 16 9 6 9 E ZW x DI iiv E PNP 252 015 Y gawe ab Pis uns ote D401 NPNTR PSCHBIS 758 58 zr 4 e a Xt 068 i Par PT A RTLA 47K sire Ras 73 47 00047 2401 si 1828737 uei ace 3585 e ze RAGS OK ge lO Gu E 22 3 E SEDE E 15 8 X al St 15 1 dE a 253 001 Xx Ras RIS E ig PAM aT amt i masg didi e ches Ta EE 2 ET ques caso we tu Er A Aba lem EE ve S AF te MA aay DN e 27 ma un Dur d D um 6 e fein Ust ME ps Hg 55 TE i t402 Temes a 04 ars 3 E E 2 13 MN pen n othe 5525 55 MUS Mar 54 tre 5 ida D DQA QU su ei tX E t fife Ni Sue i De 4 ENS 10 s ete Rza 270K 2 1 d EC Ls Tas afrau 856747 ye R a 225 aM tos a
8. 30 0C Tevoc 92Vpc 215Vp p 2 5 VIDEO ViDEO VI DEC 12 FFT F2 un 22045 m E E T CHARACTER i 420 g p LEVEL 24 uidi 12 68 RF 26 n 2 92 215 2 DELAYED z i POEM Ay Be Sy nts AO 059 29 28 2 26 25 24 25 22 24 20 9 6g i7 6 cc pe e i SN NEMO 065 DISCR Ex i SW i i Log c hol 3 7906 2 1 VIDEOS B 2 VIDEO Fig UA5001 block diagram PR 8210 A appears at pin 10 instead when pin 14 is at H level The DOS switch output is passed through the de emphasis stage and is then applied to CPCB board and a synchronizing separator circuit The CPCB board is a feed forward circuit which con trols phase of chroma components in the video signal and serves to eliminate color bands and color irregularities in the picture In addition to separating the synchronization signal the synchro nizing separator circuit also includes a noise can cellation function Any noise components exceed ing the input video signal sync tip level in the negative direction by more than about 0 5V is not accepted as a synchronizing signal and is not therefore included in the synchronizing separator signal output In addition to triggering the internal MMV this
9. DIODE 1 2473 21 24 JPC 4558C 912 256495 T 21 02 60 or 22 4559 013 254505 1 9499 23 LM393P or OTHER TR S t 102 0990 PCC PNP 2541015 UMAOOG NPN 25SC B FET 25K30A vent O 100 vns BRIDGE 5 BAL mI 20e 47 c24 1001 0 rans FOCUS MTR Ms 2 Focus d RTN i a5 7 7 fRKSCRIVE TOSYPS N2 3 9 V 4 farem tio TRKG ORIVE J vt FROM SYPS N2 4 5 TREG m MIRROR 3 POS Y sra 0 NEG e TRKG it anc a R96 4708 cs 10 72 RTN FROM TRKG MIRR SLO DRIVE TO SYPS N2 8 se d FROM _ 7406 26 JUMP TRIG SLD GUT 1 IN 7 1 IN 1 PR 8210 A uPC4558C NJM4558D uPC393C LM393P v4 OUT 7 18 2 IN t2 2SA505 250495 2SA 1015 2501815 2SK30A E PR 8210 A VSOP VWS 022 SPDL TANG SECTION UNLESS OTHER WISE SPECIFIED NPN TRS 2501818 oc MT PNP TRS 2541015 2 2 8 uen FETS 25K30A TT DIODES 182473 20v RAYS
10. CAPB D 6 PR 8210 A CIT CREF Nos amp DESCRIPTIONS 9 4558 2 1 2 25 1674 1 Q 1 3 2SC2 86 L K 25 1815 2 RDi 4PMo005 R 17 19 28 22 23 RN1 4PR1882F R 18 21 CKDYF 223250 C 1 6 7 9 11 16 17 100 16 2 CCDSL 568 758 C 3 4 CEA220M16 C 5 CEA470M16 C 8 CCOSL331K5 12 15 CCDSL181J58 18 19 911 L gt 7 VKP 072 Conn cords 11 3 RFAM HEDA A B E R2 A D 2 1 Bi 3 7 A GND RI T 1 47k SET 0022 47 16 1 12 PHOTO DIODE ARRAY V938C D pea 5 Or 12 H 1 L6 rd Io La i 5 pod F OUT A82 i T 5 j 0 i i 3 BEN HO L2 T 84 i 16yH 2 2 A 49 20 21 22 4558 rocs 91 03 25 1674 25 1815 Q2 815 R16 47k PEND gt 2 R22 I RI7 47k P 18k WO RFAMCUUV 018 Parts list 1 L7 o ye l 7 LE AR 8 TRXG B 6 14 A 2 LT DR dA E ER M 10 16 oH io 0072 tase 49 FOCS RS 12K 47 16 0022 rocs B 1 oO re 45 owe
11. 1 2 3 85 vIDEO 919 gt VIDEO OuT TOREAR m CN ae E LLL a EERE ea 2 420 16 m ass iiss 130 gt 1 i cas is das 5 5 P IW 019 2899 kanie mb cas d DOES ge i gt TT bom c26 Me a 4755 59555 Tones 4 v i R28 Hd 220 4 vo ODE 152473 C 2 8 we 4558 4016 PA3001A m NJM4558D 508 1 14 Yoo ERES chs T IN 1 2 13 C IN 1 ERES _ fiaj pge En P sue T IN 2 3 12 C IN 4 me Haa IN 1 2 uB Ed Zour GI fn ue T CET 5 v IN 2 D 2 5 10 OUT IN 4 CHER RM OUT IN 3 AUC O 4 CIN 5 6 9 corau OP d 11 vec v 8 IN OUT 3 RA iem REF ss T Sie Cte Ln HER iF 1 Kt pone 95 1 AUDX VWV 844 Parts list 1 PA3001A 40168 UPC4558C 2 45580 TL 74CN LF 347N LM13600 J LM13680N LM13788N 2SC1815 Y GR 28C1815 0 Y 6R 29C2328 E F 2SC2603 E F 2SA1015 0 Y 6R 192473 RD1 4PMnu 0J 025 VCP 032 831 838 CKDYF103750 CCDCH820 CKOYB1 2K50 CEAAR M25 181 6 051 431 758 CQMA152J50 CK
12. of 1 sec os jess the oscilauen of the multisiblacor will re start and the operation of the GY ignitting will be repeated Fig 37 LSPS block diagram 1 4 2 3 6 SAFETY CHECK N Before returning thi gt 1 make sure all shields CAUTION are in place and inter RISK OF ELECTRIC SHOCK switch funct 00 i places of caution labe law DAN LASER RADIAT AVOID DIRECT E HAZARDOUS EL RADIATION NOTE ing this player to the customer shields barriers covers and labels nd inter lock system of the lid and e functioning properly Attaching ion labels are based on the federal CAUTION LASER LIGHT WHEN OPEN AND INTERLOCK FAILED DO NOT STARE INTO BEAM VRW 107 Slider cover 2 DANGER 794 HIGH VOLTAGE LASER RADIATION WHEN OPEN High voltage VRW 085 AVOID DIRECT EXPOSURE TO cover AUTION N HAZARDOUS ELECTROMAGNETIC RADIATION WHEN OPEN CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD RE PLACEMENT FUSES SHOULD BE OF SAME TYPE AND RATINGS ONLY VRW O21 CAUTION 1 FOR CONTINUED PROTECTION RO RE AGAINST FIRE PLACEMENT FUSES 5 OF TYPE RATINGS ONLY VRW O21 DANGER DANGER 9 ASER RADIATION WHEN OPEN DIRECT
13. ttm 12 2 E d ae eM 254505 DEO mes 5 TS e is cepe 70922 0 2057 i 4 Fh 6 MED PEERS ies 5270 AF 40 xao sas ELT T jum SM Lu 1404 7405107 C401 meo CONT 0947 4 7 x9 a HO Sex Lock OA caus i LN 4 Liz D SIZE 8 2 O M av sin POT Q L 1 sol AAA A540 6 SYNC p 85 1 2 3 86 245 k ES 4 fasst ye ER TANG CPCB jar rU c Pu ERROR N33 4 cazz gt reel e UA n ut ts ET 45v 5795 N3 1 cas as 454 GND SYPS 1407 ov pam Kod si m BS 8 2 TANGORIV SMS Tang 4 BIAS vnao i oor PHP i 29 63 7 0 6 6 I owe gt 5 pow PE ZO OF SAMPLE ied weee D d Trop E 5 T T case S gt oraurs inary Li Mon 1408 UM3002 casa
14. Rotation jig Vertical jig 77 7 Tracking ass y adjustment 1 Tracking mirror adjustment 1 With tne set screw lightly tightened use the two adjustment drivers to move the mirror axially and radially and adjust so that the beam passes through the upper pin hole in the vertical jig 2 Next using the two adjustment drivers bring Tangential mirror E Vertical center line the beam onto the vertical center line on the lower pin hole and temporarily tighten the screw Tangential mirror adjustment With the set screw lightly tightened use the two adjustment drivers and adjust the mirror axially and radially until the beam falls on the horizontal center line relative to the pin hole Refer to Fig B Check and make sure the beam cleanly passes through the upper and lower pin holes Screw down the set screws a bit and recheck the optical axis Repeat the steps listed in 1 2 and 3 until the beam cleanly passes through the upper and tower pin holes After the adjustment screw down the two set screws at a clamping torque of 6kg cm 8kg em hilips riv Philips screw d IVP Tracking adjustment driver E l V AV gt Tracking mirror oe Pin hole Pin hole t 4 7 a Phiips screw driver Adjust so the beam passes DM gt SX cleanly through the upper and lower pin hole of the lower vertical jig Tracking adjustment driver B Horizontal
15. if neither the AUDI AUD2 input signal is received 51 and S2 are switched off and 53 switched on thereby preventing either channel signal from appearing at the A and B outputs 227 1 H gt BUS EM NICE emphasis 272 D i 93 q ehoaput 754 Time constants 3 e ba 1 2 2 Fu wave 1 HEE rectifier 2 em 2 Peak detector 3 MIX butter J 2 4 l dE sow 452 emphasis Heu 1 azo e ERE aet D e 2irign output E gt T p zs zy AE T Fig 7 AUDX Block Diagram 13 PR 8210 A An audio squelch is used to suppress the noise level in the audio output at times when the level of the detector input FM signal is low such as when the player is first started In this case 81 and 82 are switched off and S3 switched on by using the PA3001A AGC output without involving the AUDI and AUD2 signals from the CONT board The audio signals appearing at the switching circuit outputs A and B are passed through respective 75us de emphasis circuits R18 C14 and 39 40 before being applied to the CX noise reduction decoder This CX noise reduction system reduces unwanted noise by compressing the dynamic range during recording and expanding it again during playback This system was originally developed by the CBS Research
16. cl 0022 Te 7 100 Ole R3 10K R9 68k 17 6 NC uPCASSBC 25 1815 2502786 25 1674 e 1 ft 4 11 4 VSOP CPCB AND PSCB VSOP VWS 022 FTS SECTION eres n was an EAM Ery ur wig 330 ee Wa ud 270a 2 013 m um s 10 2 PAS dues gp ONE ue a aw INS ON ST 1 Yd STOPPER 07 FOCJSLOCK STU S Y RACKING EM ERROR _ TRACKING News ERROR 8 O TRKG 75 BAL O 12 FUN EST a 6 2 MEM 623 cao SND i 18 1 2v 12 Wan 8 EN i T Ton 24 be 32V H i gt 11 2 tt Li 5 d c d c Fae 533 us N71 i 4 yo scan 130 mot 7 2 t dis p scan lL SCan l azsa scan Toe NN J 22 CONT fevose TRKG LOOP LS SM c Ts 12v Lec 2v
17. i m 5 92 go imo s x bed 92 04 08 2 9 D Q3 25 i 95 4 SYPS V 3 WR 019 1 ay t 6 25 2541015 2551627 254965 258595 2508 8 21 6 24 09 HU 0355 or 135463 E240 0613 552473 76 2 9 LSPS V 77 AN os 5 29 Qc 254308 255061 ara 250627 Perega 25 25088 gis 2 uPC14312H 206 25853 29010012 250515 7812 93 56 2SAICNS 252492 s oe 254965 250818 258595 25 1061 25 1627 i 25 817 25 2320 8 PS VWR 011 254505 Ps MCNB VWM 001 Hs Aes WARNING EXTREME CARE MUST BE EXERCIS 2541015 ED TO LSPS BOARD WHILE WORKING WITH 25 1815 THE PLAYER PREVENT POSSIBILITY OF YOURSELF TO DANGEROUS VOLT Gxt 4 5 6 PR 8210 A SYPS VWR 19 Parts list 1 LSPSCVWR 811 Parts list 1 MK Part CIT CREF Nos amp DESCRIPTIONS MK Part Nos amp DESCRIPTIONS UPC7812H 2 1 28C1815 0 Y GR Q T 2 4859 25 595 0 8 2 16 25 2320 2SA1815 O Y GR Q 3 6 28C2603 E F 25 1861 G 4 7 2941015 0 Y GR Q 3 29C1815 0 Y GR Q 5 25 1815 0 Q a 25 495 Q 8 10 12 25 1627 0 Q 5 2 505 Q 9 11 13 2SA965 0 Y Q 6 25 1627 0 14 25 595 0 9 7 25 817
18. Fig 19 Sample hoid timing chart TAN MIRROR TILT VR S HPULSE REFH POH OUT Fig 20 Tangential servo circuit 23 PR 8210 A rotation too far at maximum input level Since the required angle of rotation in the tangential mirror increases while moving towards the outer track in CAV dises the gain is switched in 4 step switching by the 041770418 FET switch With CLV dises the gain is fixed The error signal required for the spindle serve is obtained from the branch point between 15 4 and 152 amplified by AMPS and mixed with the PFC output in order to control the spindle motor Lock detector circuit The lock detector circuit includes 2 detectors one for detecting phase difference of less than 31 between REF H and PB and the other for detecting a difference of less than 10 The first is Used 10 switch the tangential servo loop on and off while the other is obtained as an output from y 3 Mirror limiter When using dises of considerable eccentricity the movable rai of the mirror will be initially rather wide making lock in difficult to attain For this reason the voltage from pin 13 which appear in the same timing as tangential servo lock is applied to 2408 voltage comparator and passed o wea 1 through the R529 C151 delay
19. soft clamping purposes and extracts the signal again when the input level on pin 2 of the P3 switch is changed to L level The level of the MCA code which exists within the V blanking interval of the video signal output from pin 1 is suppressed by 70 The reason for this is to prevent the appearance of the MCA code in the screen during the fly back period in certain types of TV sets This operation is inhibited during video squelching Fig 5 5002 block diagram 12 Fig 5 outlines the internal functional blocks in the UA5002 DOC processor and also an example of general application The delayed video signal applied to pin 7 via the 1H delay line is demodu lated by a discriminator circuit of same composi tion as the discriminator circuit in the UAS001 with an external resistor connected to pin 12 serv ing as the load As can be seen from the discrimi nator stage signal waveform diagram the frequency component with a frequency twice that of the carrier frequency is still included in the signal at this stage but is eliminated by a low pass filter connected to the load resistor der rM wA We PANAN 4 e P ET is ros qe RED eos T Fig 6 Waveforms at UA5002 each terminals Ihe video signal applied to the amplifier con nected tu pin 16 is amplified by about 30dB in order to obtain a video signa of the re
20. 101441 100 0 98 1 97 10 95 1 94 0 TRIG li 1 T PICTURES ONTV JUMP TRIG 100 1 100 0 100 1 101 01 101 1 101 0 101 1 PICTURES ON TV 101 1 101 0 100 1 100 0 100 1 100 0 100 1 TRIG T PR 8210 A Search operation The fig 30 shows the method of search opera tions and with the pick up positioned on frame number 2 000 uses the search procedure to frame number 1 000 as an example SFN SEARCH NBR CURRENT NBR E xampie Sequence during search from present position 22 000 to 71 000 SCAN EAD LMP REV PLAY EXEC A Fig 30 An example of search operation Fig 31 Flow chart of search operation 35 PR 8210 A 1 Positive transition in center of bit cell represents logical 1 s Negative transitions in the center of bit cell represents logical 078 2 Rise and fall times 225 25 7 7 100 0 5 IRE nsec 10 90 Detail 24 Bit BIPHASE CODE 0 5 0 IRE 4 24 L 2p 81 Bits value Hexadecimal 0000 EM D pr p 0001 1 0010 2 0011 3 0100 4 MSB LSB 0101 ET ERU 0110 6 0111 7 1000 8 1001 9 1010 A 1011 gp 1100 1101 D 1110 E Bit 1 Log
21. R301 20 12v zonu 1 sv jo dec DDRFSE min CHROM A520 1 RD 8 i SIC 2200 5 LE Ty Mtm T caso esos 9027 9424 RF CORR 4n EA Ren rero B any aft C446 19 16 224 NP 1 COMP SYNC VIDEO 52 Fy tema RF SENS SYNC 86 6 UM5003 vee CLR 1 Hebel T 5 22 vt OUT 2 IN Z2 2541015 2SK30A 25 1815 D EES B SPDL TANG sect COMP SYNC 1260 RF SENS SYNC PSCB VWG 043 sect 5 CPCB M 87 CPCB VWV 023 62 52 Ca L1 cont 2 ES pack 118 2 som We iiw i iu VAS uns pa 49 i PE Hows bro ey ee maniel lass ERROR 77 5 60 ceca Lu peser xri peg Tem RO ie 2 H NP 12561815 PNB 12341015 D 7 2 259 Er
22. VWG 101 1018 113 PMA 40 060 14 001 MCNB 114 PMB 3 P 6 FMC 15 Mech chassis 115 PMB 30P080 FGN 16 008 Slider motor 116 PMB 39P080 17 054 Slider motor holder 117 PMB 40 080 FMC 18 841 Spring 118 VCZ 8 19 028 Pinion 119 VCZ 30P100 FMC 20 VWR 11 LSPS 120 WA 170035 0825 21 823 High voltage cover 121 UC 50 FMC 22 VWS 822 122 YE 28 FUC 23 VWV 23 CPCB 123 YE 38 FUC 24 5 007 Switch 124 ZMD FBT 25 WVXBH 040 Switch spring 125 ZMK 40H080 FBT 26 WKC 005 terminal 27 016 Power transformer 28 VWR 19 SYPS 29 wWUG 043 PSCB 30 005 Plunger 31 5 006 Switch 32 845 Spring 33 VBH 043 Spring 34 839 Inter lock pin guide assembly 35 031 Slider cushion 36 VWV 44 AUDX 37 6 023 Slider assembly 1 1 12 2 BOTTOM VIEW 3 4 5 103 9 bu 47 amp 5 6 PR 8210 A 12 3 SLIDER VIEW 4 SLIDER PARTS LIST No Parts no Parts name No Parts no 1 p Dust cover 41 BMZ 30P060 FMC 2 04 013 cord assembly 42 CMZ 30P080 FBT 3 VEB 032 Bushing 26 100 4 VNE 212 Tube holder 44 30 060 5 VED 14 Tube cushion 45 PMA 30P080 6 V6N 004 Laser tube 46 30 100 V6N 005 47 PMB 68 FMC 7 921 Vinyl tube 48 PMB 38P 8 FMC 8 VD
23. d FEE _ amp 4 F Aw BUFFER E i d isp 37 _ an 6 poo es Fig 21 Spindle motor control circuit in activation of the Z405 PFC phase frequency comparator and the generation of a pulse signal at pin 10 of Z405 in proportion to the phase differ ence between REF H and PB This pulse signal is passed through a low pass filter and amplified by AMP1 This output is also amplified by AMP2 and used to control motor speed 4 b Stopping When the REJ key is pressed RUN is switched from L to H level resulting in S8 being turned on and the AMP2 output being switched to 0 5V This output is amplified and by making the motor terminal voltage negative effectively brakes the motor Once the disc rpm drops to 360 1 is inverted resulting in pin 6 being reduced to Vcc Q423 is thus turned on and the brake released 4 c Gain control 1 and S2 are turned on or off depending disc size and type CLV or thereby selecting the appropriate gain This switching status is out lined in Fig 23 15v 12v TACH O3V 55 PR 8210 A 4 d Motor servo during focus unlock mode Since PB H is not generated if proper focus is displaced the spindle motor will tend to speed up in runaway condition To prevent this motor rpms are detected by an AC tacho generator compared with a reference speed voltage and the resultant
24. error amplified by AMP4 for use in motor speed control With CAV discs this reference voltage is fixed while with CLV dises it is switched in 4 steps thereby enabling phase to be locked for a short period when the focus servo is locked 4 e Disc size detector The 8 in and 12 in disc diameters are detected by COMP6 A voltage proportional to the motor rpm is applied to one of the comparator inputs while a voltage which detects the motor current is applied to the other thereby ensuring that disc size is properly determined with both CAV and CLV discs alike 7 58 59 3 9420 Fig 22 UM3002 timing chart 25 PR 8210 A SPINDLE MOTOR GAIN CONTROL 121NCH 8INCH 12INCH BINCH CLV CLV OFF OFF OFF OFF OFF ON ON OFF ON OFF ON ON C OFF OFF OFF ON 5 p IO LD OFF ON D OFF ON so 52 TANGENTIAL MIRROR GAIN CONTROL lt NCH 8 INCH 12INCH 8INCH CLV CLV CLV ON ON ON ON ON ON OFF ON OFF ON ON ON ON ON ON OFF ON OFF oH D OFF ON 510 IN
25. synchronizing separator output signal appears at pin 6 as a composite synchronizing signal output In this model this composite synchronizing signal is applied to the V synchronizing separator where a signal is generated and applied to the SPDL sec tio in order to cover the V blanking interval of about 15H from the vertical synchronizing signal If the FM signal level is not detected however this composite synchronizing signal is inhibited TL b yo aH or u ur JL 22 IET d Fig 4 UA5001 waveforms on each terminals 11 PR 8210 A The MMV triggered by the composite syn chronizing signal generates a clamp pulse for keyed clamping of the input video signal applied via pin 9 from the CPCB board This clamp pulse is also employed as the UA5002 clamp pulse The clamp ed video signal is passed via switches P1 P2 and P3 the output appearing at pin 1 At the P1 switch the video signal is switched to a signal of half the video level by a display back ground signal The P2 switch switches the video sig nal and the character signal with white level and in this case the switched character white level can be adjusted by the voltage applied to pin 17 The P3 switch is involved in video squelching and switch ing of the video signal with the P4 switch output When using CAV discs switch P4 applies the com posite synchronizing signal pin 7 for
26. tester Device under Test all exposed metal surfaces 2 wire cord Also test with piug reversed Earth Using AC adapter ground plug as required amp AC Leakage Test PR 8210 A ANY MEASUREMENTS NOT WITHIN THE LIMITS OUT LINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER 2 PRODUCT SAFETY NOTICE Many electrical and mechanical parts in the appliance have special safety related characteristics These are often not evident from visual inspection nor the protection af forded by them necessarily can be obtained by using re placement components rated for voltage wattage etc Re placement parts which have these special safety charac teristics are identified this Service Manual Electrica components having such features are identified by marking with a on the schematics and on the parts list in this Service Manual The use of a substitute replacement component which does not have the same safety characteristics as the PIONEER recommended replacement one shown in the parts list in this Service Manual may create shock fire or other hazards Product Safety is continuously under review and new instructions are issued from time to time For the latest information always consult the current PIONEER Serv ice Manual A subscription to or additional copies of PIONEER Service Manual may be obtained at a nominal char
27. 0 0 15 250818 0 19 280525 0 Y 6R 17 1JLA6S D 1 2 SMi 5A 02 D 1 6 GHV 83SSN EQA01 0611 D 3 XZ O57 D 7 8 192473 D 4 RD5 6EB2 192473 D 9 5 1 02 D 11 14 RD1 4PMDODJ 1 8 10 30 1 4 R 3 5 7 18 25 29 32 RN1 4PR8200F R 9 RD1 2VSun0J 32 VCN 016 R 6 6 8 3U RD1 2VS3R3J R 19 24 093 C 1 6 R 38 18 34 VCH 010 C 7 8 VCN 89 R 41 101 1 2 3W CKDYB182kK58 9 CCDSL 221 750 C 18 CKDYF473Z58 1 5 25 109 16 41 13 vCH 009 C 2 4 3300 25 CEA220M18 Gr 12 CKOYF 333750 C 6 8 9 CEARA7MSQONP C 14 CEAAR7M25 C 7 12 14 471 16 15 479 25 C 19 VCG 018 C Le CKDYB561K50 11 16 22 1 Cr dS VTIL 684 L 1 Line filter CEA222M18 C 101 VTL 63 VEK 866 FU 2 33 Fuse 3A VEK 004 FU 1 2A VKR 001 Fuse holder VKR 001 Fuse holder VKP 668 Conn cords 016 VDA 8 5 H V cord VKP 61 Conn cords Q17 VKN 049 cap 828 Spacer VCA 004 1 6 block VEC 802 Insulator round VCA 002 872 Insulator square 883 Screw 001 Parts list 1 CIT CREF Nos amp DESCRIPTIONS RD1 4PMa nnJ R 1 3 VCN 018 R 2 78 012 415 6 917 09 2 CONT Q2 Q3 VSOP N8 9600000020 VSOP N6 F2 125V 3A gt E C19 560p R30 Gis N3 25027 FI 125V 3A R
28. 219 229 238 239 247 249 259 263 265 1K68 0 1 2 271 273 287 411 152473 0 3 19 12 15 16 201 203 CEA810M59NF 9 15 255 258 428 431 464 205 286 403 423 182 58 18 286 468 WZ 698 D 14 CEA810MSa C 12 18 2 048 D 18 CQMA332 J50 16 415 RD6 8EB3 D 401 402 CQMA682J50 E dv X2 868 562250 20 CEQAB1 B7R2 CQMA4A72 50 21 4801 420 435 RD1 4PMDO00J R 1 27 29 33 36 69 71 CQMA223J58 22 89 92 94 96 98 104 106 CEAAR M16NP 24 43 7 438 451 108 109 111 112 115 118 201 203 218 CQMA333 J50 C 25 256 275 189 16 27 28 31 32 202 204 208 240 246 248 250 253 260 266 270 277 447 463 VSOP VWS 822 Parts MK Part No 184 58 7 150 051 271 750 CCDCHS68 J50 5 CCOCH228 J58 CCOSL 181558 4 16 CCDCHi 58 JS CCOCH338 150 CCDUJA 70 758 478 18 CCOSL 518I56 CCDSL 161 58 CCDSL 151 J50 CQMA823J50 CCDSi 828 J50 CQMA563J58 CCDCH3690 58 CCDSt 121J50 CCDSL620 J52 CCDSL101J58 UCDSL 159 50 UCDSL 221 750 CQMA183J50 CQMA272 50 122 58 COSH142 J58 CQSH681 158 CEA100M16NP CEA220M NP COMA683J58 CQMA222J58 CEA3R3M16NP CQMA192J58 CQMA273J50 CQMA4 73258 CCDSL 470 50 4 1 CEA101M6NP 5 28 10 887 CCDSL 331 250 4 5 Vist 3 IT REF Nos amp DESCRIPTIONS C 37 423 C 39 274 467 C 285 216 209
29. 2473 Te Sie ENABLE 87 PR 8210 A UA5002 2SK19TM wes 2SA1015 2561815 ax PR 8210 A VSOP VWS 822 Parts list 1 CITOCREF Nos amp DESCRIPTIONS VSOP CVUS 022 Parts list 2 CIT CREF Nos amp DESCRIPTIONS UPC4558C 1 1 4 407 RD1 2VS2R J 28 NJMASS8D RD1 2VSnD00J R 98 91 102 413 489 526 UPCASS9C z 2 UPC393C 1 3 408 RD1 4PM000J 211 213 215 249 251 252 254 CLM393P gt 264 271 273 277 279 282 285 2 5 286 401 425 427 429 431 449 5001 1 201 UAS002 1 202 VCN 8 20 R 426 120 30 24 2 401 RO1 4PMO0UG0J R 451 479 481 495 497 512 515 MBB4824BM 525 527 534 536 538 549 542 UMSag3 2 403 544 550 566 568 569 571 753 HD74LS107P 7 484 SN74LS187AN RN1 4PRD2ODF R 513 514 LM3 8 1 2 405 UM3e 2 Z 406 829 VR 1 4 9 407 27 UM 398 24 826 VR 2 5 204 401 4 7k 2SK30A GR Y 2 410 411 413 415 417 419 VCP 824 VR 3 201 202 VCP a27 6 T 25 1915 0 68 A 3 283 211 404 486 422 423 VCP 028 VRZO3 404 485 434 VCP 023 VRABS 29C1815 Y GR Q 8 25 Q 10 CKOYF 223750 5 1 8 19 23 35 4 6 4 7 25 4 gt 5 0 0 12 487 412 443 444 452 254505 0 8 13 408 2SK19TM Y Q 284 CEAR4 7MS NP C 2 11 2o 38 C2SK192A Y 2SC1815 0 Y GR Q 217 221 424 433 183 58 t 3 418 CQMA153J58 C 5 29C2320 E F Q 217 433 CKDYF 1032750 7 29 38 33 34 201 28C2683 E F 203 206 207 214 21
30. 28C2021LN 2 3 102 P SYNC YNC EO SQ NO BY CONT gt TRIGGER EXT C EXT TROL MINAL 3 102 EXT R contro TERMINAL 2 2 5 IOIB VUG 181 Parts list 5 741 5365 HD74LS365AP 5 74426 5 74425 2SC2021LN R 152473 RD1 4PMoooJ CEA4R7M35LL CKDYF 183258 VKN 133 2 3 1 1 12 8 1 2 3 4 Control terminal PR 8210 103 PR 8210 A 11 7 KEYC AND IRAB Le 5 104 INLOC ED 1 VWW 046 21 22 23 24 75 26 555 SN74LS04N 508 P SN7445N HO7445P 50110 TC4001 BP MB84001B SN74LS74AN HO74LS744P D12 014 152473 016 17 TLYI23 27 TC4069UBP 04 51 TLRI23 D2 3 6410 15 TLG123A ar 5 PA SE 56 i SCANF 52 SCAR 53 71 22 01 T HM 00x 691 tons 7 4 R25 22 AWW 5 TLOB2CP 2501615 Dt NJL6143A 02 TLR205 D3 D7 152473 F1 029 IRAB VWG 045 3 105 NESSSP SN74LS 84N CHD 74LS84P gt SN7445N CHD7445P gt M58118CP 4091 1 4741 57 4LS 7 AAP TCABS69UBP MBB4G69BM TLR123 TL6123A 192473 TLY123 RD1 2PMD00J ChOYF1 3Z5A VCH 011 CCDSL 18158 CKDYF 333250 47 5011 33 5
31. 7k 828 VR 3 22k CKDYF 1 3256 1 14 15 17 20 21 24 29 31 33 35 37 39 43 45 46 51 52 1 5 C 2 8 32 34 CKDYF333Z250 3 051 181 50 C 5 6 22 CQMA473K50 t 7 19 CKDYB182K5 C 9 12 23 CEA220M16 C 16 58 CCDSL121J58 C 18 CKDY8331K50 C i25 CCDSL820 258 C 26 CKDYBA 1K50 27 100 16 44 25 49 VCM 83 ve 1 S PF VTL 026 k 1 18uH 864 55 808 x 1 4 41MHz 55 002 x 2 455kHz 401 A IOIB VWG 101 VSOP pe irme N53 1 COMP SYNC COMP SYNC N53 2 GNO N54 VY SYNC V SYNC n 54 7 VIDEO sa VIDEO SQ 54 3378 gt DATA N54 5 y STAND BY STANO BY N54 4 5 N54 3 GNO RI N54 2 19 ay 2 2k DISP BACK 9 8 015 La 7 C2 C4 OFF 77 47 0 001177 DISP BACK R5 E 55 2 9 19k disp RD N55 1 DISP C 7 7 R6 N 55 8 E 1 IR qur 11 2 QOH REMOTE CONT ua N55 7 45 9 INT EXT IR RT 10k JUMP TRIG 89928 02 JUMP TRIGGER Dm nS N55 5 410 D INT EXT y JUMP TRIG R8 N55 4 1 10k j SCAN 5 gt 3 6 SCAN C 1 13 1 pa N55 3 p 7 V SCAN C 21 SN74LS365A EXT CONTROL nc uses 22 SN74426 TERMINAL 23 N74425 CONT Q1
32. Ac 1 Fig 16 Jump back operation timing chart 5 6 SPINDLE AND TANGENTIAL SERVO General Outline By comparing the phase of a reference signal with the phase of the synchronizing signal separa ted from the video signal reproduced from the disc the spindle servo maintains the spindle motor rpm at a constant value However due to the disc eceentricity and track irregularities time base errors of are generated in the reproduced video signal resulting in failure to obtain normal color in the reproduced picture since the errors exceed the TV receiver color lock rangel It is therefore necessary to suppress the time base errors to a level not exceeding 20 and this is achieved by comparing the phase of the reproduced color burst with the phase of a reference oscillation signal and sub sequently driving a tangential mirror to control tangential movement of the laser beam For this purpose the following 3 ICs are employed i11 Control pulse generator IC UMS5003 2 Tangential servo IC 12 3001 3 Spindle servo IC UM8002 the COMP SYNC LOCK zm 69 8210 2 Control Pulse Generator Circuit order io generate pulses required for the tangential servo and spindle servo this IC includes 1 burst gate limiter and polarity inverter 2 reference signal generator and frequency divider circuits 3 Equalizing pulse eliminator cireuit and i4 Sampling pulse gene
33. INHIBIT 1 MCA CODE o voeo our VIDEO 50 M OD SPLAY W 6 ODISPLAY BACK CH OCLV CAV to SPOL Function explanatory diagrams for each func tion block in UA5001 are outlined in Fig 3 And waveforms on each terminals are shown in Fig 4 After aligning the amplitudes of the video FM signals applied to pin 24 by internal limiter an output signal is obtained from pin 29 with an external resistor serving as the load this signal consisting of a frequency 16MHz twice that of the carrier signal added to the video signal How ever since this signal has not yet been passed through the de emphasis stage the high frequency components will still be raised The video signal detected in the discriminator is passed through a 4 2MHz lowpass filter before being applied to the pin 21 video amplifier where the gain is about 31 to 32dB The amplified video output signal appear ing at pin 19 is passed through a 220ns delay line and then applied to the next DOS switch In this model the video signal is also applied to the SPDL section after the 220ns delay line This DOS switch includes 2 inputs pin 18 for the main line video signal input and pin 16 for the 1H delay video signal input plus pin 14 for the DOS switch control signal The output appears at pin 10 The pin 18 input appears at the pin 10 output when pin 14 is at L level while the pin 16 input d Ler Om oh ob
34. Laboratories for noise reduction in LP records and has now been modified for use in video discs Tne dynamic range compression and expansion characteristics of this system are dependent upon the following four conditions 1 The compression and expansion actions must have no effect on the audio frequencies 2 The levels in dB of signals greater than 28dB with reference level of 04 must be compressed linearly in a proportion of 2 1 and the level of signals greater than 14dB must be expanded in a proportion of 1 2 3 The frequency of signals compressed and ex panded must be at least 500Hz 4 The compression expansion control signal is to employ a variable time constant circuit which varies according to audio amplitude level changes The block diagram of the CX noise reduction compressor stage is outlined in Fig 8 the circuit composition being the reverse of the CX expander stage shown in the block diagram in Fig 7 Relia bility of these circuits is ensured by using the same circuit for the compressor feedback circuit and the expander feed forward circuit In the compressor the input signal is passed to a VCA where part of the output is passed through high pass filter for peak detection resulting in a DC voltage being generated at the output of the time constant network This DC voltage is con verted to a current by the V I converter the VCA amplification being controlled by the size of the current The o
35. SIDE OUT SIDE a DISC EL Fig 23 UM3002 switches status 26 5 7 CONTROL SYSTEM The control system for the PR 8210 A consists of the KEYC KEYA KEYB IRAB and the CONT circuit boards The microprocessor on the CONT board controls the servo circuits and the various playback modes This contro system also monitors player operating conditions If an ab normal condition should arise the control system detects and corrects that condition In cases where the condition cannot be corrected such as faulty condition cannot be corrected such as faulty interlocking during play mode player operation will be halted The following input signals are applied to the CONT board during control operations e Key input signals from KEYC and IRAB e Status information signals from various sections of the player e Video signal data including frame no from VDEM e PBH and VSYNC from VSOP The CONT board in turn generates the following output signals Control signals for various sections of the player applied to VSOP e Indicator LED on off signals applied to KEYC and IRAB used to indicate the player operating status Signals used to indicate the frame no and chap ter no in the TV screen applied to VDEM A list of these input and output signals is given in Fig 24 PR 8210 A 2 POLARITY POLARITY PIN NO INPUT a PIN NO INTER LOCK CLOSE OPEN 25 j GEA SYNC m 14 6 F
36. SYPS 14 when the REJECT button is pressed PR 8210 A Problem Cause Check Point Disc fails to rotate when PLAY button is pressed Laser beam not on No lens up operation Defective focus motor Defective bridge balance adjustment No FOCS ON signal Defective drive circuit Proper focus cannot be attained Lens needs cleaning Defective RFAM Slider beam axis out of alignment Excessive TANG or TRKG bias Defective FOCS gain adjustment Defective FOCS servo circuit tivity Check whether L SER ON switch is applied to LSPS VSOP adjustment step 3 shape curve at VSOP TP 1 when lens is moved up Check whether inter lock switch or lid switch has depressed when the lid is closed Check inter lock switch and lid switch for conduc 12 from CONT Check relevant LSPS points especially if the 12V line tends to be low Measure DC resistance in focus motor Normal value is about 1052 Check that there is no obstructuion to focus motor movement Check presence of FOCS ON signal at VSOP 7 5 when PLAY button is pressed Check for generation of drive voltage at VSOP N5 5 Clean lens Check that the focus error voltage describes an S Normal level 2V min Place a piece of paper over the lens and move the lens up If a bight is taken out of the beam spot the problem is due either to misalignment of the slider beam
37. axis or excessive bias TANG bias at 12 0 20mV bias at TP 7 0 520 VSOP adjustment step 11 Check Z1 Z3 01 and other elements ee PR 8210 A Problem Cause Disc fails to rotate when PLAY button is pressed i i Disc stops after rotating for only a few seconds SPDL servo lock failure Defective SPDL motor No SPDL RUN signal FOCS LOCK signal not applied to CONT after focussing Defective CONT Defective SPDL servo circuit Defective SPDL motor Defective FG adjustment Defective FG adjustment Defective REAM or VDEM Defective UM5003 Defective UM3001 Defective SPDL offset adjustment Check Point Pa Check for generation of motor drive voltage about 20V at VSOP N8 6 after focussing Failure to rotate when this voltage is applied to the SPD L motor indicates a defective SPDL motor Does FOCS LOCK signal appear at N76 Is FOCS LOCK signa applied to CONT N13 1 1s SPOL RUN signal applied to VSOP N9 2 Does SPDL RUN signal appear at CONT 14 8 2 Failure to generate the drive voltage at VSOP N8 6 when the SPDL RUN signal is applied to UM3002 24 indicates a defective SPDL servo circuit VSOP adjustment step 6 VSOP adjustment step 6 Check presence of RF SENS signal at UM3002 261 Check presence of COMP SYNC signal at UM5003 13 REF 15 734kHz sho
38. center line Optica axis Fig A Tracking mirror Beam on vertical center line Pin hole lower Fig B Tangential mirror Beam on horizontal Pin hole center line ower 8 Optical axis adjustment with the slider base side up 1 Press the lever of the rotation jig and turn the whole slider unit over Leave it alone in that posture for over one minute 2 Insert the tracking driver B into the point illus trated in the drawing and slowly rotate in the direction of the arrow while observing the opti cal axis Stop when the beam cleanly passes through the upper pin hole Make sure the set screws for the tangential and tracking mirror are tignt enough 4 Press the lever of the rotation jig and bring the slider unit hack Pin hcle Nub E LS Vertical jig Tracking adjustment driver B Rotation jig 9 Diversing lens and 1 4 wave plate mounting Hex socket bolt 58 ___ Hex socket set 3X12 flat point screw 3x8 SN rounded point R Holder 1 4 wave plate PR 8210 A 10 Diverging lens adjustment 1 Press the lever of the rotation jig and turn the slider unit over 2 Set the oscillo scope into X Y mode and con nect the output of position sensor jig as illus trated in the drawing 3 Set the sensor into the center hole of the mag netic circuit 4 Turn the DG adjustment screws hex socket
39. circuit resulting the Q419 gate voltage is increased gradually The width of the mirror hmiter is thus widened gradually Spindle Motor Control Circuit circuits required for control of the spindle motor are all incorporated in 2106 The major component circuits include 13 amp 2 comparator and 3 logic circuits l a starting When the play key is pressed RUN from the CONT board is switched from H to L level result ing in ST turned on and the output being obtained from AMP2 Since the externally connected amplifier stage is a non inverting ampli fier 720V is applied to the motor and the disc starts to rotate Motor rpms are detected by an AC tacho generator and when the rpm reaches 1500 1 2 voltage is generated on pin 17 Since the vol tage on pin 19 is set exactly to this voltage COMP2 is inverted The acceleration drive is then stopped and the 56 loop switch is turned on If the focus servo has already been locked a COMP SYNC signal will be passed from V DEM resulting Hot O AF Pd gt 3s E 5 EEE APY Rub 4 TES Rot 2 0 SND ae E dE Be gt 5 2 3 gt E gt n D i NUN S 20 3 COMPS _ CEN T SN AS Ne 46v we n MEE
40. for control of the tangen D r is tial mirror are incorporated in 2405 The major tod NS component circuits include EI a an equalizer op amp Lh E bi lock detector circuit L trapezoidal waveform generator OC eR f n td sampling hold crevit and BLUSE il phase and zrezueney detector circuit ESE r 3 a Operation 2 5 Is e A reset pulse is formed by input of REF H to pin 8 and the electric charge on C419 is sub 3 ZA PS sequently discharged by this pulse signal sloping Ad ye P yoltage is thus formed in accordance to the C419 y constant charging rate determined by the R538 AE R438 The C419 charging operation is stopped MP order to form a flat section at the sampling nosi i n n pe TI as shown in Fig 19 thereby obtaining an Pese rji ee accurate sample hold The sampled voltage is held n by C420 and applied to pin 28 via C421 from the COMPAR 9415 FET buffer Error is amplified by the 1 and AMP2 equalizer amplifier and further ampli x LS 2 8v fied by AMP3 and Z407 in order to drive the tan piu xev gential mirror The rotation angle is restricted by and diodes in order to prevent the mirror M E nwe CONTI d T OFFSET VR M CONT 2 i RTN SIG 71 Hanee e v SPOLLOCK
41. head screw so that the beam spot on the oscilloscope screen cores on the center of the screen Tap the marked portion of the rotation jig lightiy and readjust the DG adjustment screws Repeat the steps listed in 4 and 5 until the displacement of the optical axis doesn t occur After the adjustment detach the sensor trom the slider ot 6 Position sensor Tap here lightly Rotation jig Rotation jig BLOCK DIAGRAM OF POSITION SENSOR JiG Sensor Amp Center of the screen stage stage Oscillo scope ey Sere a A Ps HO T x 4 CH2l 3 o LX LRQ CXXXI CQ e e WU aS t AN CASS PR 8210 A 11 Objective lens mounting M stopper Pan head screw 2x4 A Objective lens C sey Pan head screw 2x4 Pallet 12 Check of stain on the optical parts 1 Press the lever of the rotation jig and turn the slider over 2 After lighting the laser put an orange colored paper under the objective lens observe the pro jection of the beam on the paper 3 If the beam is projected unevenly first blow the dust on optical parts by an air blower wipe the optical parts off by a piece of cleaning paper wetted with the following abstergent Objective lens Mixture of fron and ethanol Grating Pure fron Don t wipe off grated side Other optical parts Mixture of fron and ethanol CAUTION Do not clean tr
42. meter VRS Distortion meter VRI VR4 VR2 VR VL2 AUDIO OUTPUT CHECK Connect a level meter to Audio Output terminated into 51kQ Switch CX off and turn VR5 to the mechanical center Set the player to PLAY mode in 73 601 75 Make sure that the audio output is 490 100mV rms for both channels 1 L and 2 R If not adjust VR to satisfy the above 1 1 Set VR1 to the mechanicai center and make rough adjustment with VR4 2 R Set VR2 to the mechanica center and make rough adjustment with VR7 Switch only 1 L channel on and adjust VL1 to minimize distortion in 1 L channel Switch only 2 R channel on and adjust VL2 The distortion rating for both channels should be less than 0 396 1kHz 66 PR 8210 A SEEN pa cae zm LL c eec 1 ti t i q Step No Mode Equipment Details z We im uu een n mm due me en m 2 e DECODER OFFSET STILL Milivolt meter VR3 Connect a milivolt meter to Audio Output termi VR6 nated into 51k i While pressing CX key on and off repeatedly as fast as possible adjust VR3 so that the deflection of the pointer is less than 1 5mV in 1 1 channel Similarly adjust VR6 in 2 R channel 3 e DETECTOR OUTPUT LEVEL PLAY Volt meter VR1 CX on mode set to PLAY mode in 6 301 6 301 VR2 nonmodulation 7 200 Measure a voltage at Q16 emitter Ecn Switch only 1 L channel on and set to PLAY 3 601 mode in 23 601 1
43. mirror rank Mirror ranks and set point are shown below OSCILLOSCOPE SETPOINT Mirror Rank H TOES 7 Age H N PF ay cl Black 1 0 50 0 85 C2 Red 2 8 55 0 05 C3 Yellow 3 68 60 98 925 0 Blue 4 0 70 0 10 E breen 5 9 90 0 10 15 e VCOM PLAY 5mV div TANG TP 4 6 VR401 Adjust VR401 to minimize the TANG error wave 1 000 CIL form in vertical blanking interval of the video signal TRKG at TP 4 6 CIL PR 8210 Test Step Mode Scope Servo Point Adi Adjustment and Check Details No Range Loop No 16 TANG MIRROR STOPPER PLAY 10mV div TANG TP 12 VR405 Insert a low pass filter 47 0 0 010 between the 1 000 C L VR404 i probe and the scope input Connect the probe to i TRKG i TP 12 C L i Rotate VR405 fully CW direction adjust VR404 i i to obtain the set point X shown below TANG i Rotate VR405 slowly to CCW direction and adjust to the set point Y at 12 i Connect TP 1 6 to GND readjust VR404 Mirror Rank Set point i Code No YQ 1 1 i 1 i 17 VIDEO OUTPUT LEVEL STILL 20mV div TANG i VIDEO i VR201 Player in STILL mode in Composite test signa 100 OUT reproducing 21 000 TR
44. mirrors are classified into five ranks by their sensitivities as shown below and their ranks designated on the connector housing Verify the mirror ranks Connect each end of jig VR to 12V line and 12V line of VSOP and also the center tap to TP 7 through the resistor corre sponding to the mirror rank Connect the scope to TP 5 Adjust the ji and read the VR to obtain maximum TRKG error amplitude Rotate the jig VA so that hve mirror bias is to ror and the peak te peak amplitude Rota e th 0 44 Make Eto and Ein gt 0 65 Eto Likewise put mirror bias to TANG mirror at 12 and measure TRKG error peak to peak amplitudes Eto and Etn at TP 5 Then make sure the above C2 C3 0 59 PR 8210 A Test Step Mode Scope Servo Point Adj Adjustment and Check Details Range Loop Point j No 14 e TRKG MIRROR STOPPER SCAN i TANG TP 7 VR7 Insert a low pass filter 47k 2 0 014F between the FWD CL probe and the scope input set the TRKG i scope into X Y mode C L Connect the probe to 7 and verify the ground level in CH Y input CH X isn t used While scanning to forward direction adjust VR7 to obtain a positive voltage depending on the
45. raised in the direction and the disc sensor comparator threshold level is reduced by about 0 2V followed by the FOCUS LOCK com mand signal being sent to the CONT board thereafter the focus servo mechanism is in normal operating mode Normal Operation Focus error A B is amplified by a differential amp consisting of Z1 2 2 serves as the overall voltage adjustment for focus offset caused by the RFAM section DC offset voltage photo detector sensitivity corrections slight deviations from the optical focus point and other factors The focus error that appears in the output of Z1 1 2 passes through VR2 to set the loop gain and then enters the AGC circuit When the loop gain is raised above the level normally required noise generated in the system is caused by the in creasing amount of static generated by the focus motor Also the system becomes susceptible to 17 PR 8210 A PR 8210 A defocusing due to tracking mirror movements during scanning and other similar operations However when the gain is small it is possible that the focus offset voltage will not be able to keep up with the focus servo the input dis turbances To prevent this gain is automatically raised only when setting the loop gain so that VR2 has a stable and sufficient gain at the same time there is great deal of disturbance in the AGC circuit This operation is performed by 01 D2 and 72 C2 and in reverse parallel connec
46. the center of the leading edge of TP 2 6 including jitter with the leading edge of REF H TP 3 6 After 20 to 30 seconds verify that the phase differ ence between PB H and REF H is less than 2 sec If it is greater adjust VR406 again Disconnect TP 1 6 from GND and make sure that there is no red streak or other color distortion in the TV monitor b gt k i L ere i d P PR 8210 A 9 2 CONT ADJUSTMENT 64 3 12 INCH DISC OUTSIDE LIMIT 4 84NCH DISC 1 INSIDE OUTSIDE LIMIT LIMIT N 2 VCO FREQUENCY 272747 SHIELD CASE NOTE Use B1 TEST DISC in adjustments PR 8210 A Step Mode Servo Test Adj Details No Fr No Loop Point Point 1 INSIDE LIMIT ADJUSTMENT i Inner TRKG TV i Following PLAY mode proceed with SCAN FWD and REV most O L monitor modes and adjust VR1 so that STILL mode is obtained track between LEAD IN No 8 and 10 on the TV monitor d No 9 should be seen 2 VCO ADJUSTMENT PLAY TP7 VC1 Turn inside of the shield case to obtain a voltage at TP7 of approx 4V so that the FRAME No display is steady on the monitor 3 i 12 INCH DISC OUTSIDE LIMIT ADJUST
47. the frame chapter no time no and the various mode flags This data is then passed on to the CPU The data storage RAM stores data from the reader and designated data from the CPU in 20 byte units The display output stage generates outputs ai the prescribed position synchronized by the horizontal synchronizing signal in accordance with CPU directions and with 3 02MHz as the display clock 16 IOIB The IOIB is the interface between the PR 8210 A and external controller Signals are sent and received through the 24 pins connec tor on the rear terminal board The following system information signals are output from the PR 8210 A e COMP SYNC 4 Sync signal separated from the video signal DATA 2 Frame data separated from the video signal e V SYNC 1 Vertical syne signal separated from the COMP SYNC e VIDEO SQ 3 Command that prohibits the video signal from being sent to the TV set STAND BY 5 Command that lights the stand by indicator The following signals are input from the exter nal controller together with each INT EXT the internal and external control switching signal e REMOTE CONT 10 The serial code signal for the various opera tion commands e JUMP TRIGGER 12 Command that activates track jump SCAN C 6 Command that determines the direction of track jump and scan DISPLAY 8 is the command that prohibits sending the display characters to the TV screen Pins of 413 524 are conn
48. this indicator goes out amp STAND BY INDICATOR This indicator flashes on and off during those peri ods when some time is required for the player to switch to the next commanded function mode For example When gt marked end of the PLAY PAUSE key is pressed after REJECT during the return period DISC INDICATORS A few moments after marked end of the PLAY PAUSE key has been pressed of these indica tors shows whether a CAV or CLV disc is being played PLAYBACK MODE INDICATORS One of these indicators shows the playback mode presently selected PR 8210 A 1 CX INDICATOR This indicator lights when the CX noise reduction system is activated 42 AUDIO INDICATORS These indicators show whether only one or both audio channels are being heard SLOW SPEED CONTROL Use this contro to adjust the speed of slow motion playback NOTE Slow motion playback is possible only when an ex ternal controller is being used to contro the player Slow motion playback can not be formed using the buttons on the player itself PLAY PAUSE Pressing the mark on the upperside of the switch starts playback or returns to normal play mode from another mode To temporarily stop playback press the mark on the lower side of the switch This stops the pickup turns off both picture and sound Pressing the mark again can cels the pause mode 4 SCAN Use this key to quickly locate a particu
49. to a color video monitor TV or other video equipment that have video input terminal It provides the direct video signal POWER CORD Plug this into a wall socket E a a I 4 DISASSEMBLY 1 ENCLOSURE AND PCBS CC Caution label B VRW O71 Under housing Unscrew 7 screws marked 6 Printed circuit Front panel boards p Unscrew 4 screws Unscrew 3 screw marked marked Top housing Undo the and 1 disengage the locking Unscrew 3 screws mi the turntable Unscrew 9 screws mi Remove parts in the order above sequence diagram For exa the top housing the under housing and the hood must first be remove Note Loosen the shipping screw ing disassembly procedures tion of repairs check th screw lens cap shield ca other shields have been f positions 3 7 PR 8210 A 2 HOW TO REMOVE SLIDER FROM MECH CHASSIS 1 Remove the four fixing screws on the VSOP board and open the VSOP 2 Put the slider harness out of the joint by re moving the E washer and disconnect the A housings N4 N5 and high voltage cap Remove the two screws installed the slider pot assembly Remove the four screws installed the rail near the slider pot NN N SLIDER ES UN WARNING EXTREME CARE MUST BE EXERCIS ED TO LSPS BOARD WHILE WORKING WITH THE PLAYER TO PREVENT POSSIBILITY
50. 0 01 SC LV Ra 82k RJ Jie ren xe Ies EN a Ry owe owe Re 334 LN RS 4M 3 01 02 25CIB 15 03 05 2541015 2541015 04 25 49 PR 8210 2 2404 240 2202 2201 z3 n 2407 1408 2406 2405 gang 2404 aos 2502 Fi 9406 9426 3 020 9205 a 6402 0429 9432 927 0225 020 928 9220 027 0204 2207 0424 9410 2403 9428 924028 026 9422 gaz 0416 0420 28 434 0212 odas 0208020 0209 96 Gt 07 947 0419 0435 oaoa 999 20 042 0425 9433 9430 9431 Qzn 022 vR202 VRI 2 VRAO3 VRA07 VRAOG 8406 5 ges Fur 349 ive Meus MEET m waite Td d En ERE Ed e AU A ES a a lue xi RE TK i p RSI 22K 7 2 H E E Xu u 9494 je RS m Ya cv ne 242 303 turi ane m nk fos e er R160 12K 9207 Chii 249 quo nM He 4 3300 H 1 n Spe 5 xx S ashe 832 EO d 3 er 201 5214 358 E des Rast E 275 El 59 3473 IK 9 p 15 5 x i Foor m ya 2 get Qd me MET 2 e nu e Du EK 5 it SU OU RE TH Rex SK 0033 E Ra 58 449 ier Va sd Des
51. 060 FMC 32 VNM 8 1 Fin 116 9 060 FMC 33 Holding bolt 117 PMA 39 080 FMC 34 Nut 118 PMA 40P120 FZK 35 Motor holder 119 PMB 26 060 FMC 36 Adjustment bolt 120 PMB 30P86 FMC 37 VCG 11 Capacitor 121 PMB 30 080 FMC 38 863 Capacitor cover 122 PMB 188 FZK 39 5 006 Power switch 123 PMZ 28 8 8 FMC 40 VWW 846 KEYC 124 PMZ 26 868 FMC 41 045 125 VCZ 30 200 42 5 010 Slide volume 126 VPZ 30 069 FMC 43 861 Front panel 127 WA 30F080 N100 44 VBH 58 Key spring 128 UB 50 FMC 45 VAC 81 Play key top 129 WW 50 FBT 46 WAC 082 Scan key top 130 ZMD 30 040 FBT 47 08 Audio key top 131 ZND 30H250 FBT 48 VAC 084 CX key top 132 49 865 Front acryl L 133 50 133 Front acryl R 134 110 8210 BOTTOM VIEW PARTS LIST No Parts no Parts name No Parts no 1 5 885 Potentiometer 101 ACZ 30P 68 FMC 2 VXA 59 Gear assembly 102 AMZ 39 080 FMC 3 842 Spring 183 BCZ 30P050 FMC 4 VNL 45 Pinion 104 BCZ 30P050 FZK 5 VNL 31 Retainer 105 BMZ 9 060 F7K 6 VNL 34 Roller 106 BPZ 30 080 FZK 7 006 Retainer pinion ass y 107 IMZ 20 100 8 6 002 Rail 108 PMA 309 059 FMC 9 VDG 16 Power cord 109 PMA 39 060 FMC 10 VEC 2 Cord stopper 110 PMA 30P120 FMC 11 887 jack 111 PMA 39 120 FRD 12 VKB 003 2P pin jack 112 PMA 30P120 FZK 13
52. 1 32 41 1 478 6 7 12 13 1 2 3 4 5 15 16 8 9 e 1 14 18 17 1 1 10uH 9 5uS Dly 91 24 23 11 15 22 D M 7 B HH Q6 VR VRE vet 616 ONE CIT 0 01 7 gt RI4 7 5K DO T 16 2 2K 8 1000 22 220 R 7 510 See 06 RIO 210 RIB 14 C29 oo t6 47 0 1 Dd cH 100p Leda THO C F qus ger Rem IE 6452 tcx Ru SD aio ion 1 UR LEN 332 j wS47k 05 23 00 eee 44 9 820 p 05 cs ig moii ii LORD ote A i Lh E oie owo i 1 58 29 10449 7 9 25 iwi i Y 7 929 2726 amp 5 3 51 215 5 6 fe 48 puc Ms spe 01 02 04 SCS 204 q Ja os 2541015 age SK 5 ero tik e RH owe of 9 SENE 5 5 23218 T RUNS 4 5 S 3 Wem Bue _ e E ees CERE othe 025 v A ETSI i 622 R ix m 0 vat TO vov owe 26 047 50 y vas E gt hg ma tas noaz 232 847 R35 254 pe c 4 g Wa RIAR cs
53. 16 1 igs NM em 55 7 p 8 59 uS H KS bs 4 A 1006 Y 1 1d T amp e dex E ui yc wm Xr qwe Do tes R102 10K Que 15 le we 1 i ge i x iem 5 M ve oa own PA t ora ie E pese d T H 1 104016 E E x pe 995020209 1 158501 TM M uj 0 882 250 STEEN n ai 22 29 RUM ewer 93599395 153 zd m nee xv 4 o 1 i5 of fone a e Cul Rev 47K QUE T 64 T 38 nn rt SES 4 a 0027 in t is oe P eol 9 D9 EE 7 Pog USB 067 uso Sg Sy i D STE 17 47k 50 a5 29 90 opos RES 150K NCS mre yy RI 22n OWE CEST aay View o PEE Dum wii R82 RES Es 22 88k a R79 159 E e m m a D mig ps ip n Mo fr 5 RASTA o o oce p 5 iut M A 5 14 3 1 e Rie eim frere 84 mer ai 12 TA H gt Nao e Die EUREN 9 eal Wir Ta raa INOS 3 9e 4 5 6 97 PR 8210 A 11 6 CONT GATB AND IOIB CONT VWG 102
54. 210 211 213 231 233 212 288 215 251 457 8 230 264 235 236 237 269 489 413 442 445 449 458 241 282 242 245 261 252 254 284 4 7 257 252 267 279 485 268 278 483 404 450 ecCoooooo 283 285 426 402 420 AaB 4 8 414 416 419 421 446 459 422 424 425 455 427 429 432 440 433 436 462 434 456 439 441 448 454 465 467 461 466 1 S pF VSOP VWS 622 Parts VTL 067 VTL 851 VTL 863 VTL 856 019 VTF 022 55 085 V S5 810 D334 D22A VKP 227 VKP 229 VKP 228 812 VTF 013 VTF 030 list 4 L 287 L 299 160 L 401 12uH x 401 31 5kHz TH 1 Conn cords Conn corca Conn cords OL 201 iH 01 c 2 C1815 Y GR 25C2328 E F 2SC2603 E F 2841815 GR 25 495 0 RD174PM000J CEAAR M25 CEA221M16 CKDYF 193258 CEAA 0M10 PSCB VWG 843 Parts list CIT CREF Nos amp DESCRIPTIONS OD coon Ts 32 3 5 6 4 1 8 2 3 5 6 PR 8210 A CPCB VUV 023 Parts list 1 CIT Nos amp DESCRIPTIONS 2SC1740 Q R S 298C1815 0 Y GR 2S9418015 0 Y GR SVC321SP B1 D1 RDO1 4PMnD a0J 23 4 16 CKDYB222kK58 47 1 1 16 182 58 CCDSL 101 598 CKDYF 103750 CCDSL121J50 VTL 823 VTL 061 VTF 032 oono
55. 8 CEAQ10MS0LL CEA1908M16LL 55 092 VSC 884 vDx ea2 VNL 089 UNL 090 VNL 091 SLT CREF Nos amp DESCRIPTIONS IRAB VUG 845 Parts list MK Part No CIT CREF Nos amp DESCRIPTIONS 7 1 TL882CP 7 f 2 7 2 25 1815 0 Q 1 2 3 NJL6143A D i Z 4 TLR123 D 2 2 5 152473 D d jf 2 6 RD1 4PMD DJ R 1 46 8 29 2 CKDYF 1832580 C d Ge 9242 CEAL M35LL c Dy Big bar 53 4 14 D 1 4 5 11 CKDYB162K50 8 6 D 2 3 6 18 15 CEA2R2M58L C 18 CQMA332K 56 Cat D 12 14 CQMA153K50 15 D 16 17 835 1 38kHz Notch R 1 23 KV TF 029 is 32 671 45 113 Conn cords 81 Sub f lter n 2 18 16 G 7 8 9 18 C 12 Cc 43 C 14 x 1 455KHz SU 1 8 Flat harness LED Holder 2 LEG Holder 3 LEO Holder 5 7 CX 25 21 eire S olio 60606060966 lt gt 54 t t 44 52 SCANF 5 SCANR 5 2 R E 7 s 002 PLAY 002 PAUSE N51 70 Use TE Ro 0 001 cake rh R23 1K 0022 15 dte M pm 47k T 22 E moce Ea eK T R20 JON 55 VR2 12v GND ANS LED 21 45 TLR123 DZ3 6 T L6 123A R14 10K p Ri iK 120K 4 grt oa ob z oft C3 TC4OC BP or 0 0 9 GND
56. A SCAN B ome 5 SCAN C PIN 12 FOCUS LOCK DELAYED BY i TIME CONSTANT 4 C12 R74 12V PIN 211 TRKG ERROR Fig 13 Initial tracking operation timing chart PR 8210 A focus servo mechanism At the same time the slider is moved initially in the forward direction by the SCAN A and SCAN C commands in order to locate the inside start position After a delay of about 0 5 sec following the FO LOCK com mand from the focus servo mechanism an input voltage is applied to pin 21 of UM4004 thereby switching the internal F F to enable status And at approximately the same time a tracking error sgnal is applied to pin 27 resulting in COMP being inverted by the zero crosspoint of that sig This is followed by triggering of MMV2 and 100us later the gering of the loop P F result ing in the tracking and slider servo mechanisms being closed See Fig 13 for an outline of the time chart of this initia tracking operation Scanning operation The time chan tor the scanning operation is outlined in Fig 14 When the SCAN REV key pressed SCAN A iL SCAN and SCAN tL commands from the CONT board are applied to the UM4004 resulting in switch 2 being turned on by the internal scan logic and the slider servo thus being made open loop At the same time 3 83V output voltage appears at pin 12 This vol tage is inverted and amplified by AMP4 resulting in the slider bei
57. C voltage of around 8 to 10kV peak value appears on the output of secondary voltage doubler and is impressed to the anode of the laser tube On the other hand around 2 100Vde appears on the output of the voltage doubler with 775Vac inputs That voltage is varied by the line voltage Q10 is turned on by L SER ON signal then dis charge current is ready to flow On the order of 3ms or less while ignition voltage is impressed the laser tube starts lighting and the discharge current 38 flows Due to tnis Q9 is reverse biused by the voltage drop on R31 Q3 is turned on and oscila tion of the multi vibistor is stopped Accordingly the operation of IG block ts stopped At the same time the discharge eurreni is stabi lized to 5mA by Q10 CS connected in series between coilector and emitter Q10 operate for reducting the ripple or the discharge current and the serge voltages R1 to RG connected in parallel among each Cl to C6 of the voltage doubler equahze the voltage applied on each capa and prevent reverse charge for those by the discharge current when the power is ed off When the laser doesn t start ghting notwith standing impression of ignition voltage by deterio laser Q9 is turned off by the output of the level detector consist of D7 08 Cll C12 Qs etc And the oscillation of the multi ibia is stopped 09 ine ration turned on again on
58. CUS ON command from the CONT board is applied to the VSOP board while at the same time the LASER ON command is applied to the LSPS board result ing in the laser generator being switched on Due to the application of the FOCUS ON command the Q5 inverter output is switched to H level resulting in this output combining with the Q7 H level out put to turn the Q2 analog switch on And due to the QS output 53 is inverted and 30mV DC voltage is applied to the Z2 1 2 input The circuit constituted D7 18 and C11 is for applying a pulse differentiated by a time constant of R52 and R53 to Z2 1 2 and overates for de creasing a static frictional forse of the focus motor while beginning of the focus motor raising opera tion and also increasing a focus motor torque lowered by unbalanced focus bridge This 30mV DC voltage is amplified in Z2 1 2 in order to raise the focus motor to the required position The counter electromotive force appearing between the focus motor terminals at this time as detected level detection by the Z2 2 2 counter electro motive force detector circuit via a bridge circuit and is then applied to the Z2 2 2 amplifier as a negative feedback signal The focus motor can thus be raised at a constant velocity When the focus motor is raised to about 60 um below the proper focusing position tracking error will commence to appear This tracking error is generated in and B forms and appears as a
59. EW PARTS LIST PR 8210 A No Parts no Parts name No Parts no Parts name 1 863 Hood assembly 51 VNK 68 Volume cover 2 244 Plate 52 VNK 63 Acryl cover 3 VNE 286 Hood lever 53 864 Acryl cover 4 853 Hood hinge 54 888 Volume knob 5 VNL 77 Turntable ring 55 079 Power button 6 884 Turntable 56 070 Flexible ring T5 E Top housing 57 VNK 62 Acryl cover 8 841 Disc clamper 58 080 Reject key top 9 VEB 038 Washer 59 851 Key spring 10 385 Interlock base 60 067 Window 11 092 Protector 12 VBH 059 Spring 13 822 Collar 14 VLA 060 Interlockpin 15 VLL 89 Shipping screw 16 VNE 276 Shipping plate 100 ACZ 39 068 FMC 17 VRW 118 Caution tag 101 AMZ 30 080 FMC 18 877 Bottom cover 182 BBZ 30 060 FMC 19 VED 8 8 Cushion 183 BBZ 30 060 FZK 20 VWG 182 Cont 184 BBZ 39 080 FZK 21 VWG 44 GATB 105 BCZ 3 P 5 FMC 22 012 Lens 106 BMZ 26 858 FMC 23 827 Focus motor cover 107 BMZ 30 040 FZK 24 VEC 662 Yoke seal 108 BMZ 3 P968 FZK 25 881 Clamper magnet 109 BMZ 30 080 FZK 26 062 assembly 118 7 40P120 27 VXNV 003 Centering hab 111 26 868 FMC 28 834 Spring 112 7 26 080 FZK 29 005 Spacer ring 113 30P080 30 817 Spindle motor 114 NZ 40 FMC 31 Capacitor assembly 115 26
60. EXPOSURE TO BEAM CAUTION AZARDOUS ELECTROMAGNETIC RADIATION WHEN OPEN PR 8210 A 7 MECHANICAL ADJUSTMENTS 7 1 SLIDER DRIVE MECHANISM Never loosen these 4 Screws PTT Po ae Pm Retainer pinion ass y qom Never ioosen D L this screw STOPPER G Retainer positioning 1 While pressing the slider against the slider stop per posit the right edge of the both retainer to 1 2mm left of the right end of the slider 2 Apply screw lock to the threads of the re tainer pinion ass y and attach both retainer pinion ass y as illustrated in the drawing Rail fixing 1 Slide the slider about in the middle of the rail 2 Make sure 4 retaining screws E F and H marked holding the underside rail in the draw ing are loosely attached 3 With pressing the middie of the underside rail in the drawing against the slider firmly tighten the 4 screws in sequence E through H 4 After the screws are tight move the slider back and forth and check for smoothness of the operation 5 Make sure there is no gap between the slider and rails 6 Put a drop of screw lock on each of the 4 Screws Installing directions of each roller is as described below Never install in different direction Retainer VNL 031 77 Roller VNL 034 41 Install after retainer positioning Retainer pinion Apply screw oc
61. KG With Video Output terminated into 7542 verify i the video level is 1 0 1 from sync tip to white peak If not adjust VR201 to satisfy the above 1 61 PR 8210 A Test Step Mode Scope acne Point Adi Adjustment and Check Details i No Range Loop Point No 18 e 1H DELAYED VIDEO LEVEL STILL 20mV div TANG 2201 VR202 Verify the video level at pin 16 of 2201 is equal to 100 C L pin 16 i the level at pin 18 If not adjust VR202 to satisfy 1 000 TRKG pin 18 the above 19 e DOS TIMING SET UP 0 2V div TANG TP 11 VR204 Input a signal of 5 5MHz 200mVp p to TP 11 2201 Rotate VR204 fully CW then back to CCW until TRKG pin 14 the voltage at pin 14 of 2201 turns H to L C L 20 e V SYNC TRAILING EDGE TIMING PLAY TANG N97 VR203 Play in the vicinity of 20 000 220 000 C L 2201 Verify that V SYNC trailing edge is aligned with TRKG pin 6 the position between the 1st and 2nd equalizing CL pulses in COMP SYNC pin 6 of 2201 after that trailing edge above If not adjust VR203 to satisfy the 62 PR 8210 A T Test Stee Sevo AS Adjustment and Check Details No Range Loop No Point 21 SPDL LOOP OFFSET PLAY 0 2 TP 3 6 VR406 Connect TP 1 6 to GND and play in the vicinity of 20 00 2 6 220 000 Adjust VR406 to align
62. M 801 Insulator pipe 49 PMB 30 100 FMC 9 VCN 014 Resistor 47kohms 2W 50 PMZ 20 040 FMC 19 m Radiation shield 51 SMK 30H080 FBT 11 VNL 844 Rack G 52 SMK 30 120 FBT 12 VNE 261 Grating holder 53 VCZ 30 060 13 VGX 022 Grating assembly 54 26 050 5 14 818 DG lens assembly 55 YE 38 FUC 15 Prism 56 ZMR FBT 16 VNE 148 Wave plate holder 17 VGX 16 Wave plate assembly 18 VGX 24 Servo mirror assembly 19 VGX 015 Fixed mirror assembly 20 EI Slider base 21 VEC 051 Mask plate 22 828 Photo detector assembly 23 VLP 003 Photo detector spacer 24 VUV 010 RFAM 25 VGX 25 Objective assembly 26 827 Focus motor cover 27 012 Lens 28 VNL 029 Rack ND 11 13 SAFETY INFORMATION 1 SAFETY PRECAUTIONS The following check should be performed for the con tinued protection of the customer and service technician LEAKAGE CURRENT CHECK Measure leakage current to a known earth ground water pipe conduit etc by connecting a leakage current tester such as Simpson Model 229 2 or equivalent between the earth ground and all exposed metal parts of the appliance input output terminals screwheads metal overlays con trol shaft etc Plug the AC line cord of the appliance directly into a 120V AC 60Hz outlet and turn the AC power switch on Any current measured must not exceed 0 5mA Reading should not be above 5 Leakage current
63. MENT Outer TPS VR2 Clip TP5 and TP6 together with shorting clips SEARCH for most TP6 FRAME No 50 400 or over and make sure that the mode is track changed to STILL in FRAME No 50 400 i TP10 STEP FWD to obtain LEAD OUT Nos on the monitor Adjust i VR2 so that a voltage at switches from L to H in LEAD OUT No 10 near by i Connect TP10 to the ground and make sure that the FOCS motor is pull down between LEAD OUT No 19 and the outer end of the disc 4 8 INCH DISC OUTSIDE LIMIT ADJUSTMENT PLAY TP5 VR3 Clip TP5 and TP6 together with a shorting clips and connect 723 500 6 10k 2 resistor between TP5 and TP8 thereby turning on i TP8 SEARCH for FRAME No 23 500 and set VR3 to the very TP3 limit where a voltage at TP3 doesn t switch from H to L Switch to PLAY mode and make sure that a voltage at TP3 switches from H to L between FRAME No 23 900 and 24 000 65 PR 8210 A 9 3 AUDX ADJUSTMENT Step No I 1 CH 2 R DISTORTION RATING ue 3 CH 2 R DETECTOR OUTPUT 2 CHL LEVEL DECODER OFFSET 2 4 AUDIO 2 OUTPUT LEVEL 3 DETECTOR 1 OUTPUT DISTORTION LEVEL RATING 016 EMITTER s 2 CH 2 R DECODER OFFSET 4 CH 2 R OUTPUT o oce LEVEL 4 CHL OUTPUT LEVEL Adjustment Equi t ESPET Point Details PLAY 3 601 4 500 ue un pL 2l Level
64. OF EXPOSING YOURSELF TO DANGEROUS VOLT AGES er housing Unscrew 7 screws marked 6 Open the hood and unscrew 6 screws nt panel marked V Unscrew 3 screws marked 4 housing jo the ring and shift to one side to ngage the locking catches crew 3 screws marked 2 and remove y turntabie _ crew 9 screws marked 3 f SA the order indicated in the am For example to remove inder housing the front panel st be removed 93 pping screw before commenc y procedures Upon comple s check that the shipping ip shield case barrier and have been fixed in suitable PR 8210 A 5 CIRCUIT DESCRIPTIONS 5 1 RFAM RFAM consists of PHDB photo detector is an emitter follower The RF OUT signal is board and HEDA head amp is mounted on the extracted from this point slider assembly The photo detector mounted on The four focus control signals are B1 thru PHDB picks up the various signals and after The sums of B1 and B3 and the sums of B2 and passing them through a filter choke to eliminate B4 are sent to their respective OP amps Z2 where the 620MHz spurious signal generated by the laser they are amplified about 17dB then output as tube outputs them to HEDA FOCS and FOCS B signals Tracking controi The FM signal is amplified by about 20dB by signals and C are input to the voltage follower the negative feedback amp Transistors Q1 a
65. OUT EXEC AUDIO ON OFF CONTROL SLOW STEP STILL CONTROL JUMP CONTROL Fig 28 Flow chart of P B monitor 8210 Control operation in each playback mode Control operations during STILL STEP and FAST X3 modes are shown in the Fig 29 The left side of the illustrates which track the pick up is positioned on and the right side gives the timing sequence of jumps triggering the changes of the video field reproduced on the TV screen STALL wie TRACK JUMP p e S FRAME NBR PLAYBACK 3 STILL N LI 100 lest 101 FAST FWD 3 times speed forward play r TRACK JUMP N N y ss Weer rA A 100 101 uU 102 103 U j 1 FRAME PLAYBACK interval 22 1 includes 3 FRAMES FAST REV 3 times speed reverse play 100 101 102 1 FRAME PLAYBACK interval MR inciudes 3 FRAMES STEP FWD 172 ut 2 17 vi lf Current playback frame Playback frame after STEP FWD STEP REV Current playback 102 103 Playback frame after STEP REV frame Fig 29 33 PICTURES 1001 100 0 100 1 100 0 100 1 100 01 100 1 ON TV TRIG PICTURES j i ONIN 100 0 101 0 103 0 104 1 106 0 1070 1 109 0 ms T 1 d T Yd T L PICTURES t 1 4 4 ON TV 03 0
66. OYB681K58 819 58 CQMA4 72 J58 272 150 CCDSL 331 J58 152 58 4 1 16 CEA470M16 CEA181M16 CQMA682J50 104 50 VCH 011 VTL 048 868 gt VTL 024 VTL 862 VTL 023 VTL 861 VTF 9806 VTF 821 VTF 017 VTF 023 VTF 018 VTF 24 2 1 2 2 3 7 4 7 5 6 7 0 1 3 10 4 5 9 11 13 18 29 0 14 16 17 D 1 10 13 14 15 R 17 A Oe UA 09 12 155 17 22 28 29 32 35 3T 46 49 50 53 68 62 65 67 71 114 117 118 120 125 VR 4 2 2 2k VR 3 6 478k VR 4 7 220k VR 5 100k C 2 8 10 17 27 31 2 49 52 54 56 69 81 57 58 82 84 c C 9 66 C 18 34 58 GL 29 20 C 21 37 22 25 26 38 41 59 67 78 71 23 39 24 48 C 5 C 42 43 C 44 45 47 68 88 C 51 53 55 61 62 C 63 64 62 L ly 72 62uH t 3 5 12uH 1 uH VL 1 2 18uH F 1 2 3M F 2 2 8M B P F 33 68 919 VRT VRE Q20 13600 orL 36007 LM 3700N PR 8210 A 24 2172 25 99 23 019 27 azo MT 047 o3 is 011 012 01 0405 1 VRE VRQ VRB VRS _ TR VRI VR2 xd E 50 47 ow o tor 47K E f 5 99 stereo Ds A pai 5 E KAR 105 47 4225 es IK 4 th E bist me oon i a x ig cop di 1 s 5 e 5
67. P 3 will be 20mV lower than that measured voltage This step must be finished within one minute after the power is turned on FOCS OFFSET INITIAL SET Verify the voltage at 1 150 30mV if adjust to satisfy the above REF FREQUENCY Connect a frequency counter to TP 3 6 Verify REF H frequency is 15734Hz 1f not adjust VC401 to get near the above If you have an NTSC generator connect CH 1 of the scope to the H SYNC OUT of the generator and also connect CH 2 to TP 3 6 With triggering by CH 1 input adjust 401 to stop the current of the waveform in CH 2 Step No 5 EE Sa Scope Servo Test Adi PR 82810 A Mode Point Adjustment and Check Details Range Loop No Point SPDL LOCK CHECK PLAY TANG TP 6 6 VR407 Connect TP 1 6 to GND to make TANG servo loop open Push PLAY and scan to middle of the TRKG disc Verify SPDL servo loop has been locked If not level should be adjust Push REJECT key then set VR407 to the mechan ical center Again push PLAY key as soon as SPDL servo has been locked adjust VR407 to 1 5V at TP 6 6 e ERROR CHECK STILL TANG TP 5 GRAT Verify error level is more than 2 14 000 ING If not the mounted angle of the diffraction grating TRKG must be adjusted Scan to the point where the slider s hole for grating adjustment come
68. Power requirements AC 120V 60Hz Power consumptions 85 watts Dimensions 525 W x 408 D x 143 H mm 20 21 32 W x 15 13 16 D x 5 5 8 H in Net weight without package 13 5kg 29 8 lbs Furnished Accessories Audio connecting cords with pinplugs 1 Operating instructions 1 NOTES Specifications and the design subject to possible modifica tion without notice due to improvements 1 Actual playback time differs for each disc we 2 PARTS AND CONTROLS DISC CLAMP This holds the disc onto the turntable when the hood is closed to assure that the disc rotates smoothly TURNTABLE Place a disc on this platter so it fits over the raised center hub The turntable is directly connected to the motor so the precise speed is maintained at all times OBJECTIVE LENS This lens focuses the laser beam onto the disc and picks up the beam reflected back from the disc Note that the lens surface must be kept clean in order to maintain optimum performance POWER Press this switch to turn power on and off POWER INDICATOR This lights up to show the power is on REJECT OPEN Press this key to cut off operation and to open the hood D HOOD UNLOCKED INDICATOR This indicator lights up when the hood is open and goes out when the hood is completely closed and locked Note that the player can not be operated until
69. Q2 93 94 0 VAZ N55 8 N55 6 55 5 N 5 3 2955 4 Wore JUMP JUMP SCANC SCAN TRIG TRIG kazi N54 5 STANDBY LESSON N54 2 DISP BACK 54 1 DISP BACK N55 015 V NS B V SYNC N54 7 VIDEO SQ N54 6 B DATA N36 2 VIDEO 59 8 7 S02P men N36 7 N36 6 TC40828P sr ACC DATA M884082 2 BS E HE amp d TcaptidPor ER ats 4 REBT ae CN 2024 ee PR 8210 A CONT VUG 1902 Parts list 1 GATB CVUG 044 Parts MKOCPart No Nos amp DESCRIPTIONS MK Part T REF Nos amp DESCRIPTIONS UPC339C 2 1 40818 2 1 2 9068085 7 2 MB84001BM 004081 7 3 SN74LS365AN 2 4 CKDYF 183258 1 2 2 HO7ALS365AP SN74LS N 2 6 HD74LSQ8P SN ALSQ2N 2 TCAQH802P HD74LS82P 50117 2 TC4082BP 2 9 MB84082BM TC4024BP Z 11 MBB4824BM TCA023BP Z 12 884023 TC4869UBP 2 139 gt TCA011BP 2 14 MB84011BM TC4e49BP 2 16 MB84849BM gt TC5081P 2 17 TCS 81 AP 28C1815 0 Y GR Q i6 2SC1748 Q F OR XZ 833 D 1 RD3 3EB1 152473 D 2 4 SVC321SP B1 D1 0 3 RN1 4PRUOUDF R 1 2 131 RO1 4PMD00J R 3 5 7 10 12 16 19 27 30 31 33 34 36 66 78 74 76 84 86 89 93 95 97 111 114 115 117 120 122 123 126 130 132 VCN 024 R 68 33k Array VCN 023 R 69 33k Array VCP 026 VR 1 2 4
70. RD ending with the fixed code 0 0 07 has the 281 802 P FORWARD LOW interval width of 1 05 msec and 1 has of 8 i 2 11 msec The relationship between the 20 04 1e f REVERSE codes and the commands and data is shown in the 8 i 1 i REVERSE table 8 8 8 B SLOW REVERSE 8 1 8 8 STEP REVERS 18 i e PAUSE 8 1 8 i f SEARCH CHAPTER 1 1 AUDIO 2 6 0 t i 8 AUDIO 1 L 1 1 1 REJECT Numeral 1808 i 1 8 2 8 8 i i 3 4 1 8 8 4 1 8B i 5 1 1 8 124 6 3 11 8 B8 1 5 18 18 FRAME 00 D 02 03 04 1 1 o 1 pe 0 26 msec ELTE ETE qe T FIXED s Lu PEAY cor msec ls 1 25 32msec P iil i 2 1 msec Fig 33 Format of serial coded data 37 PR 8210 A 5 9 LSPS Voltage vs current characteristic of the laser tube is anagolous to that of a voltage regulator like thyratron An ignition voltage of 7 to must be applied between its anode and kathod to ionize the Neon gas filled in the laser tube Once the laser has started to light less voltage is required to mainiain the lighting compared with ignitting term And the voltage between the anode and the kathod is settled to a constant voltage of 1 150vdc It doesn t depend on the value of current flow Laser Power Supply circuit except l
71. Repeat above adjustment steps 3 to 11 until maximum focus error is obtained 13 This adjustment result should meet the fol lowing criteria Focus error peak to peak value more than 5 3V The difference between value A and value B within 10 of peak to peak value A and B should be approxi mately same level absolute value 1 4 wave plate uu 2 PD adjustment 8 2 B pins housing N 4 7 6 pins housing N 5 B Static jig Moveabie reflecting mirror C H FIG Connection diagram for the PD positioning and 1 4 wave plate adjustment AMP JIG CH 1 2 24P RECEPTACLE 1 FOCS A FOCS B rite 2 FCS ERROR Q 3 TRKG TRKG B 3 N5 4 TRKG ERROR 1 N 12 TRKG 13 TANG 9 8 SLIDER 14 TANG OA i 15 Focs 6 EOC 16 FOCS gt 4 h mt 12V 13 14 GND SLIDER 15 FOCS A 16 FOCSB 17 TRKG A 18 TRKGB Ju 120 wy 9 5 5 6 wr l300Hz 300Hz OSC sw osc 7 oo 9 ron MOVEABLE 2 VIBRA OR REFLECTING wmi at A LASER POWER LASER o M SUPPLY POWER SUPPLY SLID LPS El 7 FOCUS TRKG ERROR APPROX MORE GND SAME VALUE SAO TAN 53v TRKG B 51 14 Finishing 1 Apply screw lock to the followi
72. TIONS General System and disc spec Comply with MCA Philips specifications 1 Maximum playing time bw n rub Standard play videodisc 30 minutes side Extended play videodisc 60 minutes side Spindle motor revolutions P Standard play videodisc 1800 RPM SAMT NE RUE a Extended play videodisc 1800 RPM inner circumference to 600 RPM outer circumference Laser 6328 angstrom He Ne 1mW Video Characteristics Format seated ay PG NTSC specification Video output Level 1Vp p nominal sync negative terminated impedance 75 ohm unbalanced Terminal aN BNC type jack Signal to noise ratio More than 42dB Audio Characteristics Audio output Two channels stereo or two individual channels Level 650mV nominal 1kHz 100 mod 50 kilohms terminated Impedance Less than 2 2 kilohms unbalanced Terminal Stereo pinjacks Total harmonic distortion Less than 0 396 1kHz 7596 mod Signal to noise ratio More than 70dB CX encoded disc CX NR ON 1kHz 650mV output using IHF A network Frequency response 40Hz to 20kHz 3dB reference to 1 2 10 mod External controls Terminal zs TET 24 Pins amphenol type Functions CAV CLV Play Normal play mode with sounds YES YES Pause Pause mode without picture and sounds o ius tm YES YES Scan forward reverse YES YES Others
73. ansducer mirrors 13 Photo detector positioning and 1 4 wave plate adjustment Preparation 1 Mount the slider on the static jig stand A and lock in place 2 Prepare amp jig laser power supply and a dual trace oscilloscope and connect them as shown in the connection diagram NOTE There is no connecting post for housing N 4 in old static jig Therefore it is necessary to modify the connector stand on the jig 50 Adjustment 1 Turn on the power of the amp jig and light on the laser 2 Adjust the height of the moveable reflecting mirror so the reflected beam focuses on the photo detector 3 Set the function SW of the amp jig to posi tion 3 for observing the levels of TRKG A and TRKG B 4 Adjust the photo detector position to make absolute value of TRKG A and TRKG B equal by turning the PD adjustment screws 5 Fine adjust the height of the moveable re flectiag mirror to make TRKG A and TRKG B levels maximum 6 Repeat the steps 4 and 5 once or twice 7 Set the function SW of the amp jig into posi tion 2 for observing the waveform of focus error 8j Tum on the 300Hz OSC SW of the amp jig to drive the moveable reflecting mirror 9 Rotate the output VR of the 300Hz OSC in CW direction until a dip appears on the peak points of the focus error waveform 10 Rotate the 1 4 wave plate to obtain maxi mum focus error 11 Fine adjust the PD position to obtain maxi mum focus error 12
74. aser tube and ballast resistor is concentrated the LSPs board VWR 0111 Voltage multiplying recti fier which has been employed in PR 7820 and VP 1000 is not empioyed in this model Instead of that an ignition transformer is adopted to obtain the ignition voltage Both this transformer and secondary voltage doubler are enclosed case with resin mold and mounted on LSPS board as IG block In this ignition form IG block is only activated until the laser starts lighting the player stand by term as the laser lighting is not necessary and in tbe lid opening term as the laser should not be lighting it is easy to turn the laser off by electrical control ing of the LSPS Therefore the laser tube is pro longed it s life also beam shutter mechanism becomes unnecessary Laser tube and LSPS circuit are shown in Fig 37 When the PLAY key is depressed after the power is turned on LASER ON signal is applied to pin 12 of the LSPS from CONT board It turns the output of the inverter consist of 91 to high therefore the darlington connected Q4 95 are turned on Consequently the multi vibrator consist of Q2 Q4 Q5 DS 06 R14 R17 C9 and C10 starts to oscillate The oscillation frequency is con cerned by the time constant of R14 C9 and R16 C10 and is about 20kHz The output of the multi viblator passes through the darlington connected Q6 07 and drives the primary winding of the igni tion transformer D
75. data processor The 1 192 divider circuit in the data processor generates an HB signal of the same repetition frequency as the horizontal synchronizing signal and applies the signal to the phase comparator input The phase com parator clock serves as the character dot reference for frame numbers etc it being necessary for the display of this data in the TV screen to be synchronized accurately with the horizontal synchronizing signal For this reason this PLL stage is designed to ensure synchronization with the PB H signal from the VSOP 7 Data gate Each type of data detected from the playback video signal is applied to the data gate where the vertical and horizontal synchronizing signals serve as reference signals Only data in lines 16 and 18 is extracted and subsequently passed to the data processor 8 Slider position detector The DC voltage from the slider pot is applied to two separate comparators as slider position data this data being used to detect each inside and outside limit position 9 Reset control circuit The CPU is protected against power reductions by means of a reset control which involves detection of drops in the Vpp voltage 10 Spindle rotation detection The SPDL motor FG output is integrated and then passed to a comparator as motor rotation data thereby fulfilling one of the conditions for opening the player lid 29 PR 8210 A 11 Input buffer This input buffer serves as the CPU extend
76. der housing a lid turntable 3 Tighten lock screws and venfy the readings top housing the followings 3 Set the adjustment board as illustrated Gage 1 2 45 0 05 mm 4 Rotate nut C so that a pointer of gage 3 reads Gage 2 5 2 50 0 05 mm 2 55 Tightening lock screw causes gage reading to 5 Rotate nut B so that a pointer of gage 2 reads lower approx 0 05 mm 2 55 9 Apply lock tite around lock screws 6 Rotate nut A so that a pointer of gage 1 reads 2 50 PR 8210 A M 522 Hexagon box wrench 8 0 mm height adjustment Nut A ual Hexagon wrench 1 5 mm For clamping READING Reading for under decimal point Reading of full line pointer 2 24 mm Dotted line shows initial setting condition for 1 thru 4 mm PR 8210 A 8 SLIDER ASSEMBLY AND ALIGNMENTS All parts replacement and optical axis adjustments must be performed with the slider detached from the mech chassis Prior to the slider assembly and alignment detach the following parts from the slider base Slider cover Shield cover Racks Laser tube 1st fixed mirror 2nd fixed mirror Grating DG lens 1 4 wave plate Necessary jigs and tools Slider stand e First optical axis adjustment jig First fixed mirror adjustment Power meter Laser power measurement 1 Laser tube preparation Ballast resistor preparation Not to protrude the lead end
77. e SLOW TRIG SLOW OU T e IR NR 5V CONT N20 105 PR 8210 5 21 23 27 12 26 VR2 2 45 TLRI23 6 9 TLG 123A RIS 15 TLG123A REJECT SN7445N or f H07445P i WK SN74LS74 AN Cis Del 016 0 7 4 orHD7Q4LS74 1 50 01 i VNL TLY123 1 r E 170 pie LA be i i 240 ou 4 0 01 085 f 6 i oye R12 150 j 4001BP or 5 150 840018 e 1 10 150 BND Iro wl Oy RB 150 022 i 10 16 Dio me gni L E id 4 587445048 or 00 gt gt 9r gt ons Oo 228 HD74LS04P gt 0022409 Fr PE asia 83 3 ee zo 28 NE555P TC4001BP i 84001 MEOIIOCE T Yop QU 1 1 lyra ix fp Du s b ja e 2 3 15 5 UJ uso Gam AH ss SN Qu a 6 9 HD74LS04P HD74LS74P SN74LSO4N a TORE SN74LS74N SSS vec 4 E 10 2 7113 2CLR 3 8 12 2D fa R 43 Em e 5 10 6 25 1015 Mx 2561815 51027 196 4 5 6 107 8210 2 a8 12 EXPLODED VIEWS AND PARTS LIST 12 1 EXTERNAL AND TOP VIEW Q 100 ion 1 2 3 Q TOP VI
78. e a 1 1 probe in osc input connect to Ge mode to obtain sufficient gain 3 focus bridge balance 2 6 playback H PB H 4 GND 3 6 reference WARNING 5 tracking error 4 6 tangential error EXTREME CARE MUST BE EXERCISED TO 6 osc input TRKG 5 6 LSPS BOARD WHILE WORKING WITH THE 7 tracking return 6 6 f g level FG PLAYER TO PREVENT POSSIBILITY OF EX 8 tracking loop control POSING YOURSELF TO DANGEROUS VOLT O L connect to GND AGES 9 GND 10 focus drive 11 RF 12 tangential return 53 Step Scope Servo No Mode Range Loop 1 SET UP 5mV div SET UP 5mV div 3 SET UP 5mV div 4 SET UP 5mV div 5 SET UP 54 Test Point No TP 12 10 TP 3 1 TP 3 6 Adj Point VR404 VR6 VR3 VR1 VC401 Adjustment and Check Details When the adjustment mode is SET connect pin 1 of PSC amp to GND thereby the 12V and 12V lines on VSOP are activated TANG MIRROR BIAS Verify the voltage at 12 is 0 20mV If not adjust VR404 to satisfy the above This step is necessary when VSOP is replaced MIRROR BIAS Verify the voltage at TP 7 is 0 20mV If not adjust VR6 to satisfy the above This step is necessary when VSOP is replaced e FOCS BRIDGE BALANCE Connect TP 10 to GND Measure the voltage at TP 3 offset voltage of 22 then disconnect TP 10 from GND Adjust so that voltage at T
79. ected to ground 3 Software The computer software employed in the control of the video disc player includes two monitor programs called the Begin End monitor and the Playback monitor See Fig 26 1 Begin End monitor Fig 27 operations if the need arises safely 2 Playback monitor Fig 28 Used in player control to ensure proper playback mode according to the pressed operation push button Also used in player control to support playback control where normal playback is not possible B E Monitor SPOL LOCK REJ KEY IN or LID OPEN Fig 26 B E monitor and P B monitor Used in monitoring player operations and status up until a picture is obtained in the TV screen after the power has been switched on This monitor is also involved in control When the reject button is pressed during play mode and the user removes the disc from the player this monitor program also ensures that these steps are performed REMO REJ POWER OUTSIDE LID OPEN IN ON i VIDEO SQ ON AUDIO SQ ON SPINDLE OFF STAND BY LED FLICKERING SLIDER TO HOME UNLOCK CLOSE STAND BY LED OFF Monitor OPEN Fig 27 Flow chart of B E monitor PR 8210 A TO BE MONITOR NORMAL MODE SEARCH SRCH EXEC PROGRAMMING MODE MOOE NORMAL OPERATION PLAY SLOW STEP FAST SCAN PAUSE SEARCH EXECUTION LEAD IN
80. ed input port buffer for storage of status informa tion received from various parts of the player 12 Slow timer NE555 and the slow speed VR plus tors mounted on the KEYC circuit board operate as 2 for slow motion speed settings 13 LED driver driver and decoder employed to operate the front panel indicator LEDs 14 CPU The CPU used in this video disc player is an 8049 series NMOS IC incorporating a 2kbyte program ROM plus a 128 byte scratch pad RAM The operating clock frequency is 4 41MHz The CPU is connected to the data processor via an 8 bit data bus Control signals are transferred between this IC and the servo system in accordance with player operating mode When a control signal from the 16 bit output port is passed to the servo system according to the prescribed timing a corre sponding response is detected The CPU also performs arithmetic operations during search mode on the basic of frame data and address data sent from the data processor 15 Data processor This IC is a 42 pin NMOS IC with an operating clock frequency of 3 02MHz The four major functions are listed below 1 Decoding of the Philips code extracted from the playback video signal 2 Storage of the above data 3 Character display control 4 8 bit x 2 port processing Philips code decoder catches the leading edge of the 500kHz Philips code by 3 02MHz scanning and subsequently detects
81. entical designation CIRCUIT BOARDS OTHERS Mark Part No Symbol amp Description Mark Part No Symbol amp Description VWR 019 SYPS vTT 016 Power transformer VWR 011 LSPS VXM 017 Spindle motor VWM 001 MCNB V XM 008 Slider motor VWV 010 RFAM V XM 0101 VWS 022 VXP 005 Piunger VWV 023 CPCB VGX 023 Slider assembiy VWG 043 PSCB VSA 006 SW1 Power switch VWV 044 AUDX vSF 006 SW2 Interlock switch VWG 102 CONT VSF 007 SW3 Lid switch VWG 044 GATB SM1A 02 Di VWG 101 RD1 4PM271J Ri VWG 045 VCS 005 Potentiometer VWW 046 KEYC VCG 011 C1 VCG 005 C2 C5 CKDYF333Z50 C6 VDG 016 Power cord VDA 013 H V cord assembly KEYB KEYA iVWG 045 SS VWS 0221 m iVWV 044 PSCB VWG 043 MCNB 3 VWM 001 SLIDER _ MOTOR 777 1 i y ci pee SPINDLE LIBE NET svPs MOTOR Te VWR 019 1 i SLIDER ASSEMBLY VGX 0231 POWER pecus SLIDER POT TRANSFORMER LSPS VWR 011 VWG 101 73 1 OVERALL CONNECTIONS 2 ACPOWER 12 ov CORD 60Hz FROM 1 TRANS LSPS 011 SLIOER R247k 2W CERAMIC TYPE LASER TUBE
82. eter reading is lowest and lock the laser tube by fixing screws down NOTE Make sure the laser tube can t be rotated after it is locked down After installation recheck the polarization adjust ment Aline the end of the laser tube above the convexed mark 4 Polarization adj jig i 4 First fixed mirror adjustment 1 Attach the fixed mirror 2 Set up the first optical axis adj jig 3 Adjust the hex socket set screws refer to the illustration below until the beam passes thru the pin hole Power meter PR 8210 A 4 After the adjustment confirm that the laser power at the position noted in the drawing measures 0 9mW to 1 6mW ams ac Adjustment screw First fixed mirror First optical adjustment jig gt linsert all the way in 3 Beam spot Adjustment screw Beam spot N e After adjustment is complete Beam spot Adjustment T screw Ad 2 tap here lightly and recheck rounded tip optical axis alignment 3X8 x Adjustment 5 Second fixed mirror and grating adjustment 1 Attach the second fixed mirror 2 Adjust the hex socket adjustment screws behind the mirror so that the beam passes through the pin hole of second optical axis adj jig The relation between the beam spot and the screws is same as the first fixed mirror adjustment 3 Tap the back of the second fixed mi
83. ge from PIONEER 16 PR 8210 A 14 PACKING PROCESS FRONT OF THE SET PR 8210 A Q PACKING PROCESS 1 Set the lens cap loose the shipping screw together with the caution tag and the shipping plate and then close the hood securely Power switch must be turned off 2 Bind the power cord place the set in the bag and seal it with adhesive tapes as illustrated Take care that the power plug doesn t hurt the set 3 Stick the bag containing Operating nstructions and the bag containing Audio cords on the packed set 4 Fit the pad L and R correctly into posi tion at the both ends of the set place the set in the packing box and insert the holder behind the set and set the cushion board on the set with the cushion against the front of the hood 5 As illustrated turn the top of the box in Parts List Mark No Part No Description 1 VHA 012 Lens cap 2 VLL 089 Shipping screw 3 VNE 276 Shipping plate 4 VRW 118 Caution tag 5 VHA 017 Sheet 6 VDE 010 Audio connecting cords 7 VRB 023 Operating Instructions 8 VHL 014 Bag 9 VHA 029 Bag 10 VXA 069 Cushion board 11 031 Pad 8 12 VHA 030 Pad L 13 VHX 003 Holder 14 VHG 069 Packing box
84. iagram 18 4 There are also 3 MMV components MMVI is triggered by a jump back trigger signal from the CONT board and sets the jump F F by generating pulse outputs of approx 1004s 2 is triggered by a pulse corresponding to the zero cross point of the tracking error Since MMV2 is re trigger type component with an output pulse width set to about 100 an L ievel output will be maintained without inversion while ihe trigger pulse repetition frequency is more than 10 2 MMV3 is triggered by the output of the window comparator in the previous stage resulting in the generation of out put pulses of about 5ms n width which serve as resetting signals for the loop in the next stage Pin No Lis for jump pulse outputs generated when the jump F F in the next stage is set by the MMV1 output Although the output pulse polarity js determined by the SCAN C signal only the 6 6V output is obtained in this model Pin No 12 is for the DC outputs employed to drive the slider during scan mode There are 5 output voltages altogether viz 6 6 6 6V high scan 3 3V 3 3V low scan and OV and these are controlled by the SCAN SCAN B and SCAN C input signals Start of initial tracking operation from set up mode When the PLAY key is pressed there is a FOCUS ON command output from the CONT board resulting in the start of focussing by the PLAY FOCUS TRKG KEY IN ON SLO f CLOSE FOCUS ON SCAN
85. ic 1 11131 F Bit 2 Logic O Bit 3 Logic O 45 12 0 2 sec Bit 4 Logic 1 Detail Fig 32 Specification of the Philips code signa specification Philips Code Specification T ITEMS CODE LINES REMARKS LEAD IN 10 indicate where the tracks are starting 17H 18H to follow immediately after the end of LEAD OUT 280H 281H the active program mn A pes tees ux FRAME NUMBER FX X41X4 X4X 17H 18H 1 lt 4 lt 79 999 PICTURE STOP 82CFFF 279H 280H CHAPTER NUMBER 8X X DDD 281H 1 79 D pit MX Ead MALI 25 CONSTANT LINEAR VELOCITY CLV 280H PROGRAM TIME X indicates the hours NUMBER CLV FX DDX X indicates the minutes PR 8210 A 5 8 SERIAL CODE The PR 8210 A can be controlled by the front TABLE panel keys remote control unit or external con Tues a us 5 trollr The commands and data drom these COD NAME sources are all encoded into a serial code of the 0001 02 D3 04 same format and sent to the CONT board This format is shown in fig 33 5 The format is a continuous pattern beginning PLAY FORWARD with the fixed code 0 0 1 followed by DO 8 8 8 i 8 FORWARD D1 D2 D3 and D4 to indicate the contents and 8 li LOW FORWA
86. is sonia E ed eile 50505 2 55 on 0 470 PH 05 27 CN 7 254817 5 0 470 250545 w 1 B Ris grag 15 M EQ Ris 53 IK 33 4 Ao Pu 2 Sep aw T SA X 100 Q2 an 910 Qs 48 E 51 250450 254505 250495 234505 25 495 ENS B Ow RI7 tk 0 047 los tes be n 4047 Too 254505 3300 25 330025 SvPS LSPS 15 470 16 m Di Ry 4 3 160 o o 680K Re D D2 e cmv 035 Rm ia 820 25453 9121465 er 80k R 037 03 R23 0406 0171 56 e wee o 24 25 OM R 152473 R3 as 9 680K 002 Rro C 10 450 10 450 250818 00 08 2561815 Q5 2541015 Q5 254965 Q3 Qt 96 9704 95 018 PR 8210 A Cis N R7 Cis Ria S LIIS EE qum 5 2K 4740 2 ede W 44 a ig 2551061 4 a P 14312 Hor Par 2551061 TA 5 PQ 72H R3 o 560 C2 PWS ai CONT N12 i5 470 16 25V 2A 4 Up 4 Q7 250595 2561018 IM 8 26 oo Cie fe m n C13 10 16 11 qe Tom 22 10 ooo R20 5 uU pi 6 25 10k 004 eni 7 RY 2 2M tw QS 2551827 e ii 2
87. izing PA30014A Ud pe PR 82810 A output of constant width rrom pin 1 The resistor and capacitor connected to pin 21 are used in deciding the MMV1 output pulse width iie the detected drop out width while the resistor and capacitor connected to pin 22 determine the output pulse width i e the width of the pulse added to the drop out The video output signal from pin 10 of UA 5001 is passed through the de emphasis stage and then applied to the CPCB board This signal is also applied to pin 5 of 15002 in order to extract the phillins code present in the vertical blanking interval This video signal is then synchronized and clamped by the clamping pulse applied to pin 2 sliced by the DC voltage applied to pin 13 and then appears at the pin 3 output only while the DATAENABLE signal applied to pin 4 is at L level These demodulated audio signals are applied to respective switching circuits via the audio output level setting controls and VR2 When the AUDI and AUD signals from the CONT board are applied S1 and 2 are switched on and 3 switched off resulting in the 1 and 2 right channel output signals appearing at the switching circuit outputs A and respectively If how ever the AUDI or AUD2 signal is not received from the CONT board S2 S1 and 3 are switch ed on and 51 52 switched off resulting in the 2 right channel signal appearing at both switching circuit outputs A and B
88. k to ge li assy the of the thread Slider ass y p Attach loosel VGX 023 kp MN H gt y Rail VNG 002 Retainer install after Do not loosen these 4 Screws This rail position is the reference of the slider drive mechanism retainer positioning Apply screw lock to the top of the thread Mech chassis Never loosen this screw This slider stopper position is the reference of retainer positioning ae 7 2 POSITIONING OF POTENTIOMETER PINION GEAR Pinion gear positioning With lightly pressing the slider against the slider stopper adjust the mark of pinion just above by idling the pinion gear Pinion gear lock After the pinion positioning rotate the s cket set screw clock wise direction until the end of the screw touches lightly to the potentiometer holder next screw back one full rotation then apply screw lock around the screw P d Pinion cb Screw back Slider S i LAT j4 PDL 1 i 0 5mm gt MOTOR V B A zu Ul p 7 ir ci b ES 7 3 SP NDLE MOTOR HEIGHT Nah wd C ihe spindle moto gp i Nut Onsists of atf 7 and dummy turntabia ADJUSTMENT PROCESS li Rotate an outer dial of gages so that a pointer 7 Repeat step 4 to obtain above reads 0 1 when pin probe is freed readings 9 Remove un
89. kHz 75 mod 4 500 Adjust VR1 so that the voltage at 016 emitter comes 9 375 x Ecn Similarly adjust VR2 in 2 R channel 4 AUDIO OUTPUT LEVEL PLAY Level meter VR4 tn CX on mode set to PLAY mode in 3 601 3 601 VR7 1kHz 75 mod 4 500 VRS Adjust VR4 so that 1 L channel output level comes 914mVrms and adjust VR7 in 2 R channel Switch CX off and adjust VRS to obtain the audio output level in both channels of 488 20mVrms 67 PR 8210 A 10 TROUBLE SHOOTING 4 Problem Cause Check Point i Lid fails to open when Siider is not in PARK position REJECT OPEN button is and cannot be activated pressed Defective slider driver gear If the slider motor is turning replace the slider drive gear section Defective slider motor If drive voltage is applied to the slider motor replace the slider motor Defective slider servo circuit If no drive voltage is applied to the slider motor check UN4004 12 in the if a negative voltage 6 is detected when the REJECT button is pressed check the subsequent drive circuit 7 3 5 L N7 1 SCANC L is normal Plunger fails to move i Defective plunger If 20V voltage is generated at SYPS 1 3 when the REJECT button is pressed the plunger is defective Detective plunger drive circuit An output voltage of 20V will not appear at SYPS 13 if LIDOPN 2V min from CONT is applied to
90. l AMPI and AMP form the tracking servo op amp stage while switch 1 operates as the servo loop open se switch The loop is open when the switch is on and closed when the switch is off AMP and AMP form the slider servo op amp stage with switch 2 serving as the servo ioop open closed switch The ioop F F circuit opens and closes the loop by controlling switches 1 amp 2 here are 3 comparators COMP1 detects the zero cross point of the tracking error signal for determining the loop closing timing COMP2 is a window comparator which is applied an input vol tage corresponding to the degree of rotation in the TRKG mirror and is used in limiting the mirror s field of vision COMP3 is not used in this model TRKG Og iocus VRE LOCK TRKS OFFSET B o i EU ss uM ES 196 y r TPS ES 1 4 V pw SERE i STOPPER 40 BAL T i fs 1 remens 77 1 ES ES D BS E oed T VRS AMPS 5 GAIN por O cont GAIN i i 1 3 VALUED S vaLuEO MOIR OUT PUT ouT eur UM 4004 a 5 TRKG IC 1 1 ey 1 JUMP BACK O SCAN O EE LEE GK Tl i scan Fig 12 Tracking amp slider servo block d
91. lar part of the disc program or skip a part of the program pe press to scan quickly forward 44 press to scan quickly backward 4 AUDIO 1 1 2 R Use this key to turn sound off and on in the left or right channel Pressing either end of the key turns off sound in that channel press again to turn sound back on CX SYSTEM This key turns the CX noise reduction system on and off Turn the CX system on when playing a CX encoded disc 3 CONNECTIONS PR 8210 A 22 6 e VIDEO IN 1 ME 1 Stereo amplifier Use the coaxial cable to connect the VIDEO OUT terminal on the player to the video input terminal on the monitor TV or other video equipment terminated video input terminal Audio output on the player should be connected to the audio inputs of the monitor TV or other video equipment or to the stereo system for audio reproduction AUDIO OUT These jacks provide the left and right channel audio signals for connection to a stereo hi fi sys tem EXT CONTROL This terminal is used as an port when the player is controlled by a controller Video monitor TV or othar video equipment NOTE The connections diagram shows only one example of the possible ways to perform connections The method of connection differs depending on the control unit video equipment and other units being used VIDEO OUT The terminal is for connection
92. lses intervals and synchronizing interval the sampling pulse can t be obtained from the burst signal So the modified V synchronizing sig nal is used for obtaining the sampling pulse in these intervals Hense REF H is counted by Z401 and 7402 after the V synchronizing signal which is delayed about 3H by C401 and R402 has come At the 256th count pin 11 of Z402 is turned from high to low level resulting in the generation of the 22 pulse with approximately 9H width by C402 and R405 And this pulse is applied to pin 30 of 2403 Q403 and used to obtain the sampling pulse in this interval That pulse with width is also used as switehing pulse When the Q411 FET is switched off by this pulse the voltage correspond ing to the time difference between the sampling pulse and 2 output is held by C415 The hold voltage controls MMV3 output pulse width 0418 and Q414 thereby ihe sampling pulse is generated at the aceurate time SES mna i oe E B 1 as NICK a ey PRT gia s 5 21 a BURST GATE PULSE rasv 2 BURST MMV 3 27 SAMPLING PULSE T 725 10 TTL 1 4 BV 9 2fH 29V p raver ZUM 33V SINE 1 WAVE Fig 18 Waveforms on UA5003 PR 8210 A 3 Tangential Servo Circuit Lg ce m The circuits required
93. meten S game NE ud Qus is 3 amr gt vag ap AMET im i 0 4 amp n ore 5 d Let Bt 04 fa e iioii pis iis 54 clt qae f 6 i p 3 Sell G T pe a Ei 1 i Ii id DU e ve b 3 3504 oe 100K 3 E A NL gx AXE 26 oor 8 ps in D202 AM 1 e t a 2201 ee it Ree TES zx 3 4 5 6 PR 8210 A 2 11 5 AUDX AUDX VWV 044 dis or a niet 0 2 gso gt oi f iua gt esr Sh f enon be EES N15 _ dues 239 Ss T DS AUD mize Voor i x Pd 21 22 PA3001A 25 26 TLO7ACN DIODE 2152473 ists am i 99 23 TC4016 BP 27 LMI36CON 24 pPCASSBC NPN 2501915 PNP 2541015 pes QJ 100p LM13600N EON TC4016 LF347N Bias IN OUT our 1 1 14 2541015 proot 5 295 I OUT IN B AS 13 IN 4 2 1815 3b dE 2 INPUT A d 2 dna Wet Int 1 Ta 12 Nta OUT IN axe s v IN OUT rz t D OUTPUT Gr eureor INt B 10 IN 3 C IN v E Med 2 IN 2 B E IN 3 C IN 7H out 2 7 8 ouT3 1 Vss 8 aS T
94. mode and the AF oscillator output to 4 8kHz i 10Vp p Scan to middle of the disc Connect the oscillator output to CH X and also to TP 6 through 68k2 Connect CH Y to TP 5 Adjust VR5 to make Lissajous figure into hori zontal ellipse 57 PR 8210 A Test Step Mode i SP Servo point Ad Adjustment and Check Details No Range Loop No Point 11 i FOCS LOOP GAIN PLAY CH X TANG TP 2 VR2 Set the scope into X Y mode and the AF oscillator 20 000 10mV div 1 output to 2 4kHz 0 6 Scan to middle of CH Y TRKG the disc 20mV div Connect the oscillator output to CH X and also to TP 2 through a 68k 2 Connect CH Y to 1 Adjust VR2 to make Lissajous figure into hori zontal ellipsa ES PR 8210 A Adjustment and Check Details e FOCS LOOP OFFSET Disconnect TP 8 and TP 1 6 from GND Push PLAY key While observing RF signal at TP 11 adjust VR1 to obtain maximum RF signal Next while observing FOCS error at TP 1 conform the center of the waveform to a horizontal center line Push REJECT key verify the offset i voltage is O 0 1V If not adjust VR1 to satisfy the above OPTICAL PATH CHECK E This step has to be performed when the slider is replaced or the probiem seems to relate with the optical path Connect TP 8 and TP 1 6 to GND Push PLAY key and scan to middle of the disc TRKG and TANG
95. n output from the board These signals are added and applied to the Z3 1 2 dise sensor com parator input Phe output from the Z3 2 2 zero Cross detector is an H level output and increases the disc sensor comparator threshold level in the direction When the tracking error level is in creased to a value in excess of the threshold level the output of Z3 1 2 is switched to H level The reason increasing the disc sensor comparator threshold level at this time is to eliminate the effect of the reflected beam from the dise surface protective plastie surface When the objective lens is raised further focus error is generated resulting in and B focus error signals from the RF AM board being applied to the Zl 1 2 differential amplifier input The focus error appearing at the output of the Z1 1 2 am plifier is applied to the zero cross detector input If the objective lens is raised still further the focus error change will reach the non linear section of the S shaped curve and at the point where the threshold level determined by the input voltage is exceeded the detector output will be switched to L level The loop flip flop outputs Q7 and Q6 will thus be switched to L and H levels respectively Fig 11 Focus servo timing chart thereby closing the Q1 loop switch and resulting in the closure of the focus servo At the same time the zero cross detector thres hold level is
96. nal separated fro the reproduced videu signal in the V DEM is plied io pin 14 equalizing pulse is eliminated bv operation of mono stable muitivibrator vireuit Sampling pulse generator Since the reproduction synchronizing signai edge data is not sufficiently accurate for use sampling pulse in the tangential servo mechanism idue to the characteristics of the synchronizing separator circuit the sampling pulse is formed from the burst signal A PBH is obtained by elimi nating the equalizing pulse from the reproduced synchronizing signal in MMV7 MMV2 and MMV3 are triggered in sequence by this signal and follow ing an AND operation on the MMV3 output and the shaped burst signal MMV1 is also triggered The MMVI output pulse is used for the sampling pulse The sampling pulse and MMV3 output are then subjected to AND operation resulting in detection and amplification of the time difference between the 2 signals and subsequent control of the time constant The reason for this is to obtain an accurate sampling pulse despite fluctua tions in the burst signal zero cross point time differences in respect to the SYNC front porch During stop mode the jump pulse is divided by flip flop 2404 and applied to pin 19 in order to switch the MMV2 time constant thereby reducing color irregularities in the top part of the picture 2 e V COM Since there are no burst signals in the equaliz ing pu
97. nd Q2 type OP amp 71 and extracted as TRKG A and form a cascade connected amplifier stage and Q3 B output signals HEAD AMP Amp a FOCSB DETECTOR 4 amp 0 FOCS A Amp E Emiter O RF OUT follower Negative feedback amplifier Voltage follower Vottage follower P BLOCK DIAGRAM Fig 1 RFAM block diagram 5 2 VDEM VSOP With the UA5002 DOC processor and the UA5001 video processor IC the VDEM section which occupy 1 3 of the VSOP board handles video signa demodulation and 1H delay video sig nal demodulation plus video signal switching when dropouts occur block diagram of the VDEM section is shown in Fig 2 The video and audio FM signals applied to the VSOP board from the RFAM board are applied to the RF correction circuit Q201 Q203 Since the electrical conversion frequency response in the optical system is lower at the inner circumference than the outer circumference there is a certain amount of gain compensation up to frame number 13500 approx especially in the high frequency region where the effect is much greater Following compensation of the gain difference between inner and outer circumferences the FM signal is passed to the AUDX board and to the UA5002 DOS RFIN terminals This signal is also passed through a bandpass filter for video FM sig nals and then thr
98. network is applied to a V I converter formed by Z6 4 4 and Q16 The Z7 gain is controlled by the Q16 collec tor current resulting in CX expander input output characteristics as shown in Fig 9 15 PR 8210 A 5 4 FOCUS SERVO Due io ihe ingenious combination of cylindri cal lens and 1 way divider photo detector the laser beam reflected from the dise into the photo detec tor mounted ou the slider results in the generation Xu focus error signal where the variation between output level and rhe distance between the objective ler describes an S curve By utilizing the linear section of this focus error signal variation curve 13 curve changes in the distance between the object lens and the dise be detected employ focus servo mechanism After this focus error signal is amplified in the RF AM board and processed in the it is further amplified tcurrent amplification in the SYPS board in order to drive the focus motor In this way the focus motor objective lens is operated to maintain focussing error constantly at zero thereby ensuring that the laser beam is accurately focussed on the disc at all times When starting the objective lens is first raised as a result of the FOCUS ON command from the CONT board to a position where the focus servo be applied and once the beam is properly focussed in focus the focus servo loop is closed and d ed i and FOCUS LOCK c
99. ng points e Fixed mirrors 4 points of set screws DG lens Hex socket adjustment screws 4 ea Hex socket bolts 2 ea e 1 4 wave plate Hex socket set screw 1 ea e Photo detector Hex socket bolts 2 ea Racks End of screws 6 ea 2 Attach all of the detached parts 3 Always keep the objective lens upturned and lens cap attached 0 UL VINYL TUBE BALLAST RESISTOR HIGH V HOUSING i LASER TUBE LASER TUBE PREPARATION SLIDER SLIDER COVER SHIELD COVER i RACKS DETACHING THE PARTS LASER TUBE LISTED RIGHT 777 V st FIXED MIRROR 2nd FIXED MIRROR E E GRATING LASER TUBE MOUNTING DG LENS 1 4 WAVE PLATE POLARIZATION Polarization adjustment ADJUSTMENT iio tst FIXED MIRROR MOUNTING a Comer ADJUSTMENT 1st optical axis adj jg 2nd FIXED MIRROR MOUNTING ADJUSTMENT 2nd optical axis adj GRATING MOUNTING 1 Grating adj driver oops GRATING ADJUSTMENT 2nd optical axis adj RE AGING OBJECTIVE LENS DETACHING 30Hz 150mA TRACKING ASS Y MOUNTING Vertical jig ADJUSTMENT WITH THE tracking adj driver A COMPONENTS SIDE UP tracking adj driver B ADJUSTMENT WITH THE SLIDER BASE SIDE UP PR 8210 A DG LENS 1 4 WAVE PLATE MOUNTING OBJECTIVE LENS MOUNTING Check of stain on the optical part
100. ng shifted in the reverse direction p SCAN REV 31 DEPRESS RELEASE SCAN SCAN SCAN C PIN 12 OUT OPEN PIN 6 STOPPER IN TRKG ERROR Fig 14 Scanning operation timing chart PR 8210 A Tracking Eror Mirror rotat on Center point Following track Stoope contact L OL us Xs es opens returns 10 center pos tion Fig 15 Tracking mirror operation during scan mode Although tracking of the dise track is continued while the mirror inclination is increased the track ing error DC component is also increased and when the input voltage applied to pin 6 exceeds 0 6V the window comparator is activated and MMV3 triggered The loop F F turns switch 1 on during the 5ms interval corresponding io the MMV3 output pulse width resulting in the track ing servo being made open loop During this period the mirror returns to the center position the loop F F is set by the output pulse and switch 1 is turned off i e the tracking servo 15 switched to closed loop movement of the mirror during scan mode is outlined in Fig 15 The above operation is repeated con tinually during scan mode but as soon as the SCAN key is released the tracking and slider servo mechanisms are switched back to closed loop for normal operation During stillstep and slow motion playback modes jump back
101. nt conver sion of the returning signal into a 10 bit serial PCM encoded signal Although this IC output signal is obtained in the form of a 10 bit PCM code amplitude modulated by the 38kHz carrier the 38kHz component is removed bya detector circuit following the IC 3 IRAB This stage receives infrared signals from the remote control section which is equipped with the same kind of transmitter IC as described in 2 above Hence the infrared signal from the remote control section following reception and photoelectric conversion in the IRAB photo detector is detected shaped and con verted into a 10 bit serial PCM encoded signal which is subsequently passed to the next stage 4 Front panel key priority circuit This circuit ensures priority of the front panel push button input signals over the remote control unit key input signals By pushing any of the player front panel operation push buttons the gate is switched by utilizing the oscillator action of the IC described in 2 above 5 Receiver This stage contains the remote control recep tion IC M50117CP 10 bit serial PCM encoded signals obtained by pressing the player or remote control operation push buttons are converted to 5 bit parallel binary encoded signals before being passed on to the data pro cessor PR 8210 A 6 PLL Consisting of a phase comparator TC5081 AP a low pass filter and a discrete VCO the PLL stage generates 3 02MHz clock signals for the
102. ocs LOCK LOCK UNLOCK NIJ 440 5 SPOL LOCK LOCK UNLOCK 42 rt 5 Pe 128 NIAI vm TRKG CO OPEN CLOSE 32 RES T 21 8 F6 stop ROT Nies 5 0 PCT er ee Naor ahs __ __ eS CONT board input signals POLARITY POLARITY QurPuT MOLAR PIN NO OUTPUT e NO LASER ON _ OFF NI2 4 sow ras U LIO OPEN CLOSE OPEN 9 so Niasa LED OFF 21 4 sPoL ON OFF CLV LED OFF N21 5 DISPLAY ware 14 9 ALO 2 LEO OFF N21 6 OSPLAY BACK 14 10 AUD LED OFF ON N207 DATA ENABLE ENABLE NABIT Ni4 ii STANOGY LED OFF ON STEREO MONO STEREO NIS ag He UE Tea nize ROIS 2 Ends AUDIO 1 ON _ OFF 16 3 ANS LED OFF ON 20 4 CONT output signals SLIDER ORIVE SCAN L SCAN UTPUT PA 9 PAUSE Rev REV ewp UN NO SCAN 4 L ra n TE SCAN 8 t N L NIE 0 L c NIA SCAN signals sow sow ourrur PLAY PFA REO STILL PAUSE PIN NO LED K L H LED 2 LED L L L L 4 H CAE EACH LEO I TURNED ON LED 2 OFF LED drive signals Fig 24 CONT BOARD INPUT OUTPUT signals 27 SNYBI 8300230 MoNS som MoS 2A35 03385
103. ommand output is sent te the CONT board The focus servo is thus set to normal operating status but if proper focussing cannot be achieved within 1 sec after the applica tim of the FOCUS ON command this command signal will stopped temporaril sing operation retried 4 times Ef i sand the focus is sll not pos sible to lock the focus serve mechanism the player is switched automatically te reject mode Starting operation The focus servo mechanism block diagram is outlined in Fig 10 and the timing sequence chart is shown in Fig 11 Until the PLAY key is pres after switching the power oa the FOCUS Input command is no applied And with the of the L level output from the Q5 inverter the Q2 analog switch remains off The Q8 inverter output is likewise kept at L level and a DC voltage of approximately 30mV is applied to the Z2 1 2 driver amplifier input thereby keep ing the focus motor pulled downwards The Q4 Inverter output on the other hand keeps the Q6 QT loop thp flop output at L Q6 and H Q7 levels ZERO CROSS GE NE FOCS ON pd 1008 ON Oris px EE COSLOCK O an GY VV cs t E TRKG A 2 TRKG B t 4 t t f UMA4CCA PIN 21 Fig 10 Focus serve block diagram 16 When the PLAY key is pressed the FO
104. ough an audio FM signal trap in order to extract the video FM signal components After being applied to pin 24 of 5001 this FM signal is amplified by Q208 and Q220 detected level detection and then applied as the RF sensor output to UM3002 in the SPDL section Further more the video FM signal delayed by an interval of 1H by the 1H delay line is applied to pin 7 of the UA5002 DOC processor 9201 202 203 f AUDIO LEVEC dee rtt TRAP AUDIO oe b 8 2 1 1 t 1 1 1 lt gt 3 5 O RF SENSE KEY PULSE DATA ENABLE QATA QUT O DATA ENABLE VIDEO 10 CPCB _ ero SUPPRESS EO EET O q 9 929 SYNC PR 3 1 m Pc Pd UASOO 5 os itu 6 d DISCRI E 10 ERE ADI e re VIDEO s2w EO Fig 2 VDEM section block diagram 21 foe 15 FL e Elena st LEMMA EUN 4 br i O COMP SYNC VIDEO t SUPPRESS fom CeCe i
105. pander gain for input signals below 14dB reference value can be kept at a constant value of 14dB Following mixing of the rectifier outputs bias is applied by Q13 D1 and R83 and addition to D2 D5 temperature compensation This output is then received by the Q14 emitter follower while also being subjected to a DC shift The emitter follower output is applied to the circuit formed by 76 1 4 D6 R85 R86 and C63 for peak level detection and smoothing purposes This circuit has an attack time of lms and a recovery time of 10ms The filter output is then applied to a time constant network via the Z6 2 4 voltage follower PR 8210 A The attack time of 30ms in this circuit is deter mined by D7 R87 and C65 while the recovery time of 200ms is determined by D8 R89 and C65 However due to the dead zone formed by the for ward characteristics of D7 and D8 the attack and recovery times for small level changes are deter mined by R88 and C65 the value being 2 seconds for both times The ourput is then passed to the Z6 3 4 volt age follower and 76 4 4 C64 R90 and R92 form a high pass filter the output being applied to the 915 emitter follower which also be sidered a positive voltage half wave rectifier with a 0 7V dead zone This circuit operations in con junction with the D7 R87 C65 circuit in achieving an attack time of ims for sudden increases in high level signals The output from this time constant
106. quired level from pin 14 and since this signal has not been passed through a de empha frequeney region of tho sigr sis stage yel the high lis boosted as shown in the signal waveform diagram This signal is ap plied to pin 16 of UAS001 for compensation pur poses when drop outs are generated The FM signal app to pin 18 is also applied to the limiter and then retriggers the retriggerable MMV 1 During this retriggering action the MMV1 output is maintained at level resulting in the MMV2 output also becoming L level If however drop out exists in the input FM signai the MMV1 retriggering action stops and the is con sequently triggered This results in DOS signal 5 3 AUDX Following compensation for level differences between the inner and outer tracks the RF correction circuit in the VDEM stage the RF signal is passed to the board which includes the audio FM detectors the output selector switches and the CX noise reduction system decoder See block diagram in Fig 7 below The RF signal applied to pin 1 of the AUDX board is first applied to a low pass filter where the video FM signal is removed the RF signal then being amplified by about 37dB The 1 and 2jright channel audio FM signals which serve as the respective frequency carrier signals are ex tracted by 2 3 2 and 2 8MHz band pass filters and subsequently passed to the FM detector stage a quadrature detector util
107. rator And the block diagram is shown in Fig 17 2 a Burst gate limiter and polarity inverter When the video signal is passed via C403 and applied to pin 5 a burst signal output is obtained from pin 3 Noise components in the signal are removed by the 3 58MHz tuning circuit and the burst signal output from pin 3 is applied to the limiter where the signal js subjected to waveform shaping Since the burst signal phase is inverted every H period the phase is made uniform at every H period by the polarity inverter thereby forming the sampling pulse signal for the tangential servo phase comparator GATE F SAMPLING 358 FOR PULSE i rh tuning e I FON P PBH PULSE GE Fig 17 Contro pulse generator circuit 2401 2402 0402 0406 17727 t Sw PULSE 256 GEN T tg 21 PR 82810 A 2 b Reference signal generator and frequency divide circuits 31 468kHz signal is generated in the feed back loop formed by a crystal oscillator emitter follower Q409 and an amplifier stage inside the IC 31 168kHz pulse output is obtained from pin 9 and this is divided by 2 to form the reference signal REF By dividing by 2 again the signal for activating the burst signal polarity inverter circuit is obtained 2 Equalizing pulse eliminator cireuit When the synchronizing sig
108. rror lightly and recheck the optical axis 4 Attach the grating 5 Insert the grating adj driver into the opening for the adjustment then engage the grating driver with the cog of the grating 3X6 Grating stopper First order beam Grating Hex socket screw P rounded point screw 6 Adjust the grating by rotating the grating driver so that the first order beam falls on the scratch line of the jig 7 Installation of the grating will throw the zero order beam off a bit Readjust second fixed mirror 8 Repeat steps 6 and 7 until the following conditions are met The zero order beam passes through the pin hole of the jig The first order beam falls on the scratch line of the jig Grating driver GGV 053 2 Scratch line Zero order beam Tap here lightly and recheck the optical axis PR 8210 A 6 Tracking ass y mounting 1 Detach the objective lens and the stopper base from the focus motor NOTE Do not put any object into the gap 2 Attach the tracking ass y NOTE When you exchange the tracking new one must be ve aged be the adjustment for several hours with the slider base side up Using 30Hz sin wave CAUTION Do aot teave che siller with the components side up for 15 minutes iThe slider with the components side is illustrated the drawing helow 150 more ihan M 3X8Xx2 v Tracking ass y x
109. s 1 4 wave plate adjustment PD fine positioning YE 5 Other parts mounting NO 52 PR B2810 A 9 ELECTRICAL ADJUSTMENTS 9 1 VSOP ADJUSTMENT 8 TRKG ERROR 10 TRKG BALANCE LOOP 18 1H DLYED GAIN FOCS BRIDGE BALANCE VIDEO 34 2828 OES BRIDO LEVEL __ 11 FOCS LOOP GAIN 6 FG LEVEL 15 FREQ 1 922 2 TRKG MIRROR 12 FOCS LOOP OFFSET ES BIAS __ 401 527 0401 19 DOS TIMING 17 VIDEO OUTPUT 214 TRKGRN MIRROR STOPPER LEVEL 7 Mis 9 LOOP OFFSET pa TR emu 6 1 TANG MIRROR BIAS pasaba 16 TANG MIRROR Das ROPEER e amp 21 SPDL LOOP __ OFFSET _ EQUIPMENTS AND TOOLS PRIOR TO VSOP ADJUSTMENT Oscilloscope e Remove the bottom cover Monitor TV e Using the 30 player stand raise the front of the Test disc B1 set e AF oscillator Remove the 4 screws then connect Frequency counter extension cables to the test points e 30 player stand Install the test disc B1 Extension cables e Turn on and hold the inter lock switch and the Low pass filter etc lid switch e Plug the power cord into a 120V 60Hz outlet TEST POINT UM TP 1 0 1 probes are used in these adjustments Scope ranges are shown with the probe in use However it he 3 We put FOCS s 11 ot E ONES necessary with some scopes to us
110. s on the center of the mech chassis opening then push STILL key Insert the grating driver into the opening then engage the cogs of the grating and driver While observing error adjust the grating angle to find the smooth null point of the wave form Then rotate the grating driver CCW direction to find the first point where maximum error aon 5 un ianed UN RUNE ATO ES 9 7 55 PR 8210 A a P Test Step Mode Scope Point Adi Adjustment and Check Details No Range Loop Point i 8 e TRKG ERROR BALANCE PLAY i 0 1V div TANG TP 5 VR4 Push PLAY key and scan to middle of the disc 20 000 O L With TRKG and TANG servo loop still opened TRKG adjust VR4 to where TRKG error waveform is zs i i centered on OV or the positive and negative peak amplitudes are same level j i 8 e TRKG LOOP OFFSET PLAY 0 1V div TRKG TP 5 VR9 Disconnect TP 8 from GND to make servo C L loop close Adjust VR9 to where TRKG error waveform is centered on OV 56 i PLAY 20 000 CH X 0 2V div CH Y 50mV div TANG O L TRKG PR 8210 A Le tan Adjustment and Check Details 6 4 2 5 zi TRKG LOOP GAIN VR5 Disconnect TP 8 from GND Set the scope into X Y
111. so d 116 Form ring Vinyl tube preparation Cut half depth of the diameter N 1 1 NO Round off the VCN 014 solder points VXX 021 VEB 032 45 Second optical axis adjustment jig Second fixed mirror adjustment Polarization adjustment jig Polarization adjustment Vertical jig Tracking ass y adjustment Tracking adjustment driver Tracking ass y adjustment Tracking adjustment driver B Tracking ass y adjustment Grating adjustment driver Grating adjustment driver 1 Grating adjustment driver 2 Static jig Static jig Stand Moveable reflecting mirror Amp jig Position sensor jig DG lens adjustment Laser power supply jig ILPS Dual trace oscilloscope Audio signal generator Tracking ass y aging Rotation jig Place the resistor in the middle of the insulator tube Bind the high voltage wires and the holder lightly 2 Assembling laser tube onto the slider base Attach firmly PSA 3x6 Attach loosely T PSA 3X10 Hex socket boit 3X12 flat point N x NW 3 Polarization adjustment 1 Place the slider on the rotation jig and lock it down 2 Set the pick up of polarization adjustment jig in place 3 Connect the laser tube to laser power supply turn the power on and light up the laser Tobe holder 4 Rotate the laser tube to the point where the powerm
112. t output VSOP adjustment step 21 Defective SYNC gate When UM5003 12 is normal 1 Trick play such as still playback Microcomputer fails to read data Check for data output at UA500213 14 3 not possible Still playback not possible JUMP TRIG not applied Does JUMP TRIG signal appear at VSOP 7 4 2 Does JUMP TRIG signal appear at CONT N13 8 No jump pulse output Check for generation of jump pulse at UM4004 1 Chapter frame number search VDEM VR203 adjustment out VSOP adjustment step 20 not possible of alignment Unstable VSYNC vertical Check VDEM V R203 and surrounding time movement constant circuits Unsteady display of frame Defective CONT adjust CONT adjustment step 2 number etc ment lateral movement Level of video input applied to VSOP adjustment step 17 RFMD is too high Scanning not possible Defective CONT Check for presence of SCANA at VSOP N7 3 L level Defective UM4004 Does 3 3V appear at UM4004 12 Color drop out during scanning mirror stopper adjust VSOP adjustment step 16 ment out of alignment Slider beam axis out of align VSOP adjustment step 13 ment TE PR 8210 A 11 SCHEMATIC DIAGRAMS PCB PATTERNS AND PARTS LISTS 11 1 OVERALL The i 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 id
113. tion 22 2 2 forms an equalizer to stabilize the oop During standard operation the loop switch is eft on by Q1 and the focus error is amplified by the drive amp as controlled by Z2 1 2 de scribed earlier the output of this drive amp is eur rent amplified in the SYPS amplifier and drives the focus motor 5 5 TRACKING SERVO AND SLIDER SERVO The major component in the tracking and slider servo systems is the UM4004 IC See the block diagram in Fig 12 The photo detector outputs from both sides of the center segments divided in 4 parts on the slider are amplified by the RFAM and then applied to N4 7 and N4 8 in the VSOP board The difference between these signals is extracted in Z4 1 2 and is applied to Z4 2 2 as the tracking error Q10 FROM FOCUS SERVO forms part of the Z4 2 2 feedback loop and due to the slider potentiometer output the change in resistance across the D S interval is practically linear from the inside to the outside circumference of the disc Consequently the loop gain at the out side disc track is increased approximately 4dB compared with at the inside dise track The track ing error amplified by Z4 12 2 and compensated for level differences between inside and outside tracks is applied to UM4004 via VRS This VR control is used to ensure optimum loop gain adjust ment for the tracking servo The major components incorporated in UM4004 are described below in a little more detai
114. trigger is also applied to the UM4004 together with the SCAN A H SCAN B L and SCAN L commands from the CONT board Although the output pattern of this jump back trigger differ according to the type of play back mode it is generated during the v blanking under Philips code control See the list of sig nals in the table referred to during the description of the CONT board 1 is triggered by the jump back trigger applied to pin 16 This is then followed by the generation of 6 6V jump back pulse signal from pin 1 by the jump F F while at the same time the loop F F is also reset resulting in the tracking 20 servo mechanisms being switched to open loop jump back pulse output signal from pin 1 is differentiated level adjusted by and then applied to AMP2 The laser beam traverses the tracks as indicated in the time chart Fig 16 and moves to an inter mediate point between one track and the next When the tracking error intersects the zero cross point in the positive direction the pin 1 jump back pulse output returns to OV resulting in the tracking loop being closed and the differentiated DC vol tage being applied to the AMP2 input in a direction which will suppress the inertial movement of the mirror PN 16 JUMP BACK TRIG iN Lf PIN 1 JUMPBACK OUT PIN 4 AMP 2IN PIN 27 14045 TRKG ERROR IN 2 gt BEAM SPOTS ON THE DISC 4 TRACK
115. uld appear at Check that PB H is generated at TP2 Check for appearance of the PFC output at UM3001 10 oscilloscope V rate i adjustment step 21 70 PR 8210 Problem Cause Check Point servo not applied SPDL lock activated but no picture No color Defective TRKG mirror Defective disc sensor circuit Grating adjustment out of alignment TRKG balance or TRKG gain adjustment out of alignment Defective UA5001 Defective CONT Defective TANG mirror Defective TANG mirror drive circuit Defective 5003 Check voltage at TP 7 return Normally TP8 1 5V min A error of 2 5Vp p min wil normally be VSOP adjustment step 8 10 Check for presence of video signal at UA5001 1 Check release of VIDEO SQ after SPOL lock 5001 2 normally at H ievel Turn VR404 TANG bias around and check for voltage changes at TP 12 TANG return Ditto Video signal should appear at 0 500312 H EEE 1 The following waveform should appear at 5003 3 TANG error should appear at obtained at TP 5 when 8 is connected to ground Sampling pulse should be generated at UM5003 27 71 PR 8210 A Problem Cause Check Point Defective TANG loop contro Check 2408 1 2 0435 and 0416 circuit Color drop outs SPDL offset adjustmen
116. utput level therefore varies accord ing to the input signal level The compression ex pansion characteristics of the CX NR system fora 1kHz signal are outlined in Fig 9 14 Fig 8 CX NR system connesso block diagram OUTPUT ie Fig 9 CX NR system compression expansion characteristics With 40 modulation frequency deviation 40kHz as the system reference level OdB signals with a level greater than 28dB are subjected to 1 2 logarithmie compression Signals of lower level are not compressed The basic attack time determined by the time constant network used by the compressor and ex pander is 1ms for sudden large increases in ampli and 30ms for more gradual large amplitude increases The recovery time is 200ms for decreases of large signals while the attack and recovery time for small signal amplitude changes 15 2 seconds The demodulated audio signals passed through the 7545s de emphasis circuit are applied to current controlled variable gain amplifiers consisting of 77 Part of the de ernphasis output is also passed through a 500Hz high pass filter C61 R75 and 69 880 amplified by Z5 11 4 and 25 3 4 and rectified by the full wave rectifier consisting of 25 9 4 D2 D3 and Z5 4 4 D4 05 Due tc the forward characteristics of the diodes this rectifier circuit has a dead zone which ensures that signals below 0 6V do not appear at the output With this circuit composition the ex

Pioneer PR-8210-A User's Manual

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