Pioneer-CT8R-tape-sm 电路图 维修手册.pdf

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1、(D rrloNEerl ORDER NO. ARP- 096-0 KU, KC, HE, HB, HP, D, D/G r In CT8R, a onechip lC (PA30121 is incorporated in the DOLBY NR circuit with thefollowingserialNo. Typo Serial No. KU3607001 KC 3401001 HE 8403601 HB 8500401 H P8600201 D 9302401 D/G 9301 101 I For the contents other than those described

2、in this additional service service manual. manual, please see the original I I ! :- PICINEEFI ELECTFTCINIC CCIFIPC|FIATICIN 4-1, Mesuno 1-chome, Mesuno-ku, Tokyo 1s3, Japan FICINEEFI ELECTFICINIEA luBAl tNc. 19P5 E. Dominguez St., Long Beach, Catifonnia gOElo U.S.A. ltloNEEFl ELEcrRCrNlc EuFropEl N.

3、v. Luirhagen-Heven s, aoeo Anrwenp, Betgium P|oNEEFI ELECTFIGINICB AUETHALIA PTY. l-lD,. tze-ta4 Boundany Ftoad, Bnaeside, vicrotria 3195, Ausrnatia r The Part No. of the P.C. board was changed as follows: _Boara Type -.- Mother Assembly DOLBY NR Ascembly Sub Amp AssemblyMIC Amp Arsembly otdNow oldN

4、ew otdNew oldNew KU RWX-535RWX-578 Rwx-551 and RWX.547 RWX-579RWF.O97 RWF.102RWF.O99 RWF-103 KC HE HB H P D D/G Continued on page 2 YZ O MAY. 1982 Printed in japan RadioFans.CN 收音机爱 好者资料库 Continued from page 1 -eo,a TYPo - Headphones Amp AssamblyPower Supply AssemblyVoltago Change Assembly Remarks o

5、ldNowoldNewoldNew KU RWF.O98RWF.104 RWR.O85RWR.O89 Non-use RWX.603 KCRWR-088RWR.O9O HE RWR.086RWR-091HB HP D RWR-087RWR.O92RWX.59O D/G When replacing the DOLBY NR lC PA3012 in 3-head decks: 1. As a rule, replace ICs with only ICs of the same rank within each channel (right or left). 2. If an IC of t

6、he same rank is not available, the IC of one rank higher or lower (see table 1 below) can be used instead. However, after re- placement, the ICs on the recording side and the playback side must not differ by more than one rank. 3. The colors in table 1 refer to the color marking on the top surface o

7、f the IC package (see fig.1). Ranking color H I G H t Example: Acceptable replacement: Rankdoes not differ within each channel. Unacceptable replacement: o In this example, the rank of yellow and violet are more than one rank. tl LOW LchRch Recording Side PA3012-O1-RPA30t 2-01-Y Playback Side PA3012

8、-01-RPA3012-01-Y LchRch Recording Side PA3012-01-OPA3012-01-V Playback Side PA3012-01-OPA3012-01-G RankPart No.Color 1PA3012-01-RRed 2PA3012-01-VViolel 3PA3012-01-GGreen 4PA3012-01-YYellow 5PA3012-01-oOrange t)PA3012-01-BBlue LchRch Recording Side PA30t 2-0 t -oPA3012-01-Y Playback Side PA3012-01-OP

9、A3012-01-V Table 1 RadioFans.CN 收音机爱 好者资料库 1. PARTS LIST NO?ES; c When ordering resisfors, first convert resistance values into code form the follow ing examples. Ex. 1 When there are 2 effectiue digits (any digit apart from 0), such and 47h ohm (tolerance is shown by J = SVo, and K = I0To). 56On 56

10、 x 10t 561 . . RD%PS E6m/ 47ha 47x101 473. . RD%PSAA,t 0.5a 0R5 . . RN2H Etri( la 010. . Rslptrx Ex. 2 When there are 3 effeetiue digits (such as in high prickion metal film resis- tors). 5.62ha 562 x 100 5621. . . . RNZSR E6Emr o The . marh found on some component parts indicates the importance of

11、the safety factor of the part. Therefore, when replacing, be sure to use parts of identical designation. o For your Parts Stoch Control, the fast mouing items are indicated with the marhs * and *- * GENERALLY MOVES FASTER THAN *. This classification shall be adjusted by each distributor because it d

12、,epends on model number , temperature, humidity, etc. as shown in as 560 ohm Miscellaneous Parts List P.C. BOARD ASSEMBLIES Part No.Symbol KU typel ( 1 20V; KC type) l22OVl24OV; HE. HB, HP typesl U2OVl22OVl240V; D, D/G typesl Power switch (KU, KC types) (HE, HB. HP types) D. D/G types AC power cordK

13、U, KC types (HE tYPel (HB typel (Hp type) (D, D/G types) Spark killer (KU typel (KC tYPel (D, D/G types) Fuse T2A (KU, KC types) T800mA (HE, HB, HP typesl T2. 5A (HE, HB, HP types) T3.15A HE, HB, HP types TIA (D typel T1.5A D/G type Line Voltage Selector (Switchable 2 positions; 22OV l24OVl (switcha

14、ble 3 positions; l2OVl 220V t240Vl Display assembly Level meter assembly Half LED Head assembly Erase Head Plunger solenoid FC coil assembly J RadioFans.CN 收音机爱 好者资料库 Mother Assembly CAPACITORS (RWX-578) Mark Part No. Symbol KU), (RWR-090; KG), (RWR-091; HB, HE and HP), (RWR-092; D and D/G) Symbol K

15、U, KC, HE, HB and HP types) (RWX-590; D and D/G types) RESISTORS Note: When ord,ering resistors, conuert the resistance ualue into code form, and then rewrite the part no. as before. Mark Part No. Symbol 7 f MOTHER Assy RWX-578 Q323 ICaO5 ICrOt IC3O6 IC311 IC307 IC30a IC309 Q312 Q31r Q32? IC3IO IB Q

16、319 Q3?O Q326 Q3lO Q3O9 Ql23 Q321 q34 IC3O3,3O4 O3O7 Q327 Q3?A q3r7 Q3O6 Q3O5 Q3O4 Q3O3 O3O2 fP4 TP6 rP1 VR305 vR306 VRS9 :;frffi;,ti- Ulu S5ffi Y *=a 1, ffi,|,*i,igi6 qsi#ii.rii,r, r0017 ,fi ffipg#-trffi,H,q_=,., i *l#.$? fii,!3,.,i?*. * F*rli%,s! ,n*r #* t t-i?i3t*-*g I m!,*; r,;ff -,*-* ;I.:L.*H

17、Tu i-1,=- u # u u ;, ffig?#i ts lil ,$ill#lJTr *.r-=- #* *i#il ?ryrlTIi;u1.*,$*l,fiart i,*Plul I,* H|;*.i,4td;iTii;-ilffi,ffi-1,.,fb,iiflL,r*,.ui. lil*11fthffi$f i m lk i =- fir- *r 11 I :,t,1;.,ru, *1,i. i *#AffiH:#;-$Trnn-_?*,i*;ttf-i-iii,i1;: W.#5ffifrffiffiU*r Milsr*u,;.,r,-,.,euu,dli l.-*jh *r#

18、 Jrl:i l:l ll l*# 81fu,.ffi,rfu l-* uo_. lrl ll,*.ns, ,*rffo, I #,#f ,ffir*1i ffii-lfilil * ffii,- ,*ffi tJ:-.-*r 6;o.*1 fil*uii - rl*. lil # *-YJ t- +T: lu* Ht .,. n, , *iii_ -r.iK* ,+-+-J xBRssrB :# ti|;l ffiJTJ -i I = -,- +.# Jr lJeflml Fl lrl *r i*. iHllj Yrul ;-r lii,:;.r,., i:iii:*ist1*:, Es*

19、) *!H:ll:$,:iio *,!fii,ffi l-iiliilr .,-_.o | loro.o. .-*( gF.l i t ll - +$J L 2sc?o6o ctrziooe$*,/ cris. circ -: clzbo.oozz lolr 33x8 f, dajt I or 2scr383c 00068 /50 1 7 q - # - ;#fl*ili TTI ITI .i*,fl,#;: tlll, i ll, J,o I r*i otl$*-o-. l .!9ir,-l II -,rl JH ikl t t i*4 ; I l1 ,-+r , r*,m-1.i-,- J

20、d Jr* *16 rl *,*, l.s biuol.lttt ,*pl ,.,dn:*l _ffi_h l*ffi* TF :r:x ._ lzx J r+ii*s44+- iilEo*I ffi lone + l,.A*f) _- | rc* iuqoo, - 1 -=+.- *R!r3 6 Ras5t5OK- Lq X.- , J11, %f* B I i ,_rl ,.,st,:-l -*- ff i;,ry iJe_ -,yi ,*i C*t, lffiI*-.*;14:*- lr-m-ffi.frfrffi* Tffir m:,: 1ffi*S:* %;*giffi;,fr;il

21、;c; Sf;116*lPI ll ll #ffia- ?l ,$ Bd* T-.q+.;-gYigHifi.- ,ffi,ffi P Tqyllf rp.*i-g-+llt l) rca po6oo6 l;SE -* t I *ttFrLrERDoLayilR DoLBvNR - t UXll*i-ETi,#:lll .l,.*,*,.,r.JH E I, |f.l Fl ffi +- t ll:t?,s ,;tfl1 +Tili. =msffi:t-l Jr.,fll1,Jlr*gl_-Es2tfir r iff F +*-. *l i*jt, li*r-iL#*e6 *ru, :- |

22、-, u,0, *, I t. llR . . Y F ( 4 F o _ _ E lCao6 P040lZ I C a E P D 6 O O 6 l o o o o a a O o o o o o o O O I B7I t_ 10 CONNECTOR Assy ffi*-rn 11 EOUALIZER AssY RWX-536 12 1 I I A B FUNCTION SWITCH Assy (RWS-1521 D 10 L 32 1 A DOLBY NR Assy RWX-579 Q6Or IC6O4Q6O5 Q6O4 Q6O6 Q6O3IC6O3 Q6O2 IC60i IC602

23、D 321 r 654 CAPSTAN MOTOR CONTROL Assy F RWX-585 VOLTAGE GHANGE Assy RWX-603 L 654 10II REEL MOTOR Assy C RXX-359 REEL N RWX-58 Q902 q9Oi METER DRIVE Assy RWX-534 O9ll Q9l2 ICOI Q906 I810 10 REEL MOTOR CONTROL Assy D RWX-589 IC20t Q2040205 Q20t o2o2 A B 11 t_ 1012 3 3. SCHEMATIC DIAGRAM SIGNAL SECTI

24、ON o (9 DOLBY Assy RflX- 579 |-: I rc60l REC IA IN FPAss GNO t 2 3 P8 SW VCR ril REF. -i SCF - PilS Yr sw REc a -2 -3 ouT corT a.s scF -2 t7 vcF - 2 4 lc6ola 604 : OOLEY iIR ( 8A C TYPE P.8 SW rx RF. -r scF TI - 2 HPA - 2 f2 ss ss -2 -2 -l 2t 22 2: - - - Lt*f-lt*- PHASE a coflT A.s REC ouT E I A SYP

25、ASS GilOtx scF vcR HP f2 12 -2 -2 -2 -t -2 3 1 8 | 9 A 2 l t I reoe jrrF - 0.6 r r LY LC 36d R640 tl ss ss -2 -( e 2 : H E SU IEC A SCF VCR HPA -t wT coxT. a.s -2 -2 -2 t 3 l a t t 6 t ? t 8 f2 f2 - | - 2 OURCE) I I I a$y ss pr /P I oa - I OUT BYBSS OFF /8 e / ? / c COilT Co.T Vcc % 2 7 ? . 4 rc60t!

26、 604 PA30t2-Oi 0601 2SOEaO-o a 2SO3t3 - O a 4 _l 2SC|7.|(LN -R or 2Sc2O2l - R q 2SClEls-Y or 2SC26341|C - R Q6O5 2SAlOlS -Y or 2SAS33LN - R d 2SA937 - R d 2sAil2nrc- R 006 2sc2OO-Q d 2SC2673-O or 2SCr3A3NC- R 060l-605 152473 tr ustozto zD60t wz - r50 vcR 0602: POWER Oil MUTING scF vcR OFF /E o RlP /

27、C ttilSS COIT COIT Ve 23 25 27 26lf POUER SUPPLY Assy RWR-O89 0126,l2O7 POWER OFF SIGI|AL GEIRA1OR Fuso!_aor:r2a g ozol b oreot- t2o5,i2o8,i2o9: mx-o35 REGuLAToR Oi2Ol,l2O4 2SDEO-0 a 2SO33-D Ql2O2,l2O7*|2OA 25C|7.IOLN-R or 2SC2OA -R a 2SClalS-Y a 2SC2634llC- R ni I ef2o3 zsB7rz-e q 2saro96-o 01206 2

28、SA933LN-Rof 2SAgg7-R or 2SAlOtC- Y o. 2SAllznC- Ol2oqlzog zsclzloti- Ea 2SC224O-a- Ol2Olrl2O2 wO38 or wo3c 01203,1204 szvBroF Ol2O9 152473 s USIO4O Z0l2Ol RoSOEEa or XZO3I ZOl2 RO36EB2tr wZ-056 ZO|2O3 RO|OEE3 oi WZ-lOO ZOl2c4 Ro47EAz q WZ-O44 ZOi2O5 RD8.2E 2sc245-Y clPltTAN lrotoR corl 2SC245O-Y REE

29、L MOTOR DRIVE Asy (l/2) :-l ilf-.wAir I 10 12 1 CONTROL SECTION 3 2 MOTHER Assy Rwx-578il/2) A MIC AMP Assy (t/3 ) RWF -iO3 - - -r B cr50r o.4ft,G b-l ouT TUTE f -, o .Xl XEID ArJt (2/2) Rfi-Ut7 t SWITCHES s30r-r : MPx FrLll s30r-2: ooLBY NF s30r-3: 00LgY NF SiOOI . MEMORY CONilIECTOR Assy P.8 C D 3

30、21 MIC AMP Assv RwF-tO3 (2./3) ;l T-J 01603,1604 zscr?4oLN-s AlvlP Assy RwF- to4 t ; l ttrt-t l A I vRrTor , r7o2 : P.8 EOIIAUZER OJ RCP- O32 d ncP - oaa vnt?(!t,t7oa : P.A LEVEL AA RCP-Ooc d RCP-OEE T- I OtTot,r7o2 2sc224O-8L | | Q|7OE ,t7O4 2SC|T.IOLN -R l-J-J Qlzo5-l7lo ct7s4 ZSC|74OLN-R o. ZSCZO

31、Ai-R or ?SCl8l5-Y or 2SC2634NC-R lClTOl NJM4558O or 8A4556 or Atl6552 FLAT AMP 654 0303.304: OSC cr307 o.27 ir!o9 2.7a H,#?Jtl r;l Fll I r- I IC3O5: AUTO 8LE sror2 : Ms/sKrP SIOI3 : BLANK SEARCH SIOI4 : AUTO BLE SIOI5 : CLEAR sroi6 : Moo RES /03 /04 /oa SIOIT : TIMER SI5OO : INPUT SELECTOR sr50r : M

32、oNrToR ON - OFF ON - OFF B T Y P - C T Y P E oil - oFF - OIRECTION Q STOP REW FF PAUSE I SIOOT : PLAY srooS : REc SIOO9 : REC MUTE SIOIO : MUSIC REPEAT sroil : tNoEx scaN ? n , tE5 0/ 0ll COCP L TP F HUTE osc l AUTO IN REW SIG SEN 9G i RES OISPTAY TEHA q swtTcHEs s30r-r : s30r-2: s50r-3: sioor : MPX

33、 FILTER OOLBY NR OOLBY NR MEMORY stoo2 : sroo3 : sroo4 : sroo5 : stoo6 : ON - OFF ON - OFF ON _ OFF ON - OFF ON - OFF ON - OFF ON - OFF ON _ OFF ON - OFF ON - OFF I oN - 9E! ON - OFF oN - gEr ON - OFF REC - LINI TAPI The undalined indicotes th swit( 6 iil. f,. gr o? Q302 : SWTTCHTNG (REC-ONl tw$lafE

34、j -= vR:or :osc LEVS- AoJ tcrotl RCP - 195 d RCP- l50 2 0ATA + Vcc I L imm t4 R P-RES 3 A A/05 4 I Ct(4 c ct(l 6 cK2 l 6 :VEL LO AID4 9 RO A/Ot to LO I A/m t l to 2 a/ol 37 LO 3 O/A RES t.o4 2 l RO I -Vcc RO2 RO3 r5 RO4 ARO2 t6 ri ALo2 t2 ri Gro o3r4,3r5: TONE MUTING ;cER rrc I I ro ooo,J RSoiAIHAly

35、 I l-F , -o:B | | c!a? RtoS 1 5 . 6 r J- IB7 - B R n !ii tctSot TD62to4P REC EQUAL|ZER I I EOUA-IZER AsCy Rwx - sS6 | l% a t 5 ts TES l a o niFF o/A DArA t 2 t RES COIP L 22 D5 COTP R t6 4 - f f i tf 3 03c ftT 2t 2 A-U6-m 4 I nEw src 2a / 04 SEir-g-6 26 loa RES /ot rEcta coxt lJ _ MECHANTSM 7r ro l9

36、Jl CONTROL 5 2 1 6 4 3 E Vcc 42 ta ffif Ftus - sKrP 20 orREcflol olrE | 7 TW soaG REPEAT musE KEY I I qJT I ro m c l L t 2 EC-FUIE- I|EMOFY 4 HALF SOP :ta FwD ;6tgi 3 1 rc3to I irEctA r:l MG I rrsen I mRrT MS vaa 42 t4 Elf pAutr - sxrP 20 orRETIoN ONE i7 TW sqc iEpEAr T l PAus KEY I orJT I ro FEe I

37、L l 2 E-oiE r|xoiy 4 HALF SIOP 3A Frvo FuBg I tcsto I m Record/Playback head, Pinch roller, Erase head, Rubber belts and Capstan. Demagnetize record/playback head with a head demagnetizer. Do not use magnetized screwdriver for adjust- ments. Adjustment and measurements should be per- formed for both

38、 L-ch and R-ch with rated power supply voltage. Adjustments should be performed in the order given in this service manual. Altering the order can hinder proper adjustments, resulting in loss of performance. Level during measurements are based on OdBv=lV. Connect a 50kO dummy resistor across the OUTP

39、UT terminals. Let the CT-9R warm up (aglng) for a few minutes before proceeding with the adjust- ment. Set the DOLBY NR switch OFF and MONI- TOR switch TAPE unless directed otherwise. Test Equipment/Tools Required; 1. Test tape STD-331A for general playback pur- pose STD-341A . for playback adjustme

40、nt STD-608A . NORMAL blank tape STD-603 . CrO, blanktape STD-604 . METALblanktape 2. Audio oscillator 3. AC millivoltmeter (AC mV) 4. Attenuator 5. Oscillcscope 6. Resistor 50k0 (U4W) LVEL ( dO) 333Hr 333H.l4tHt2 5rH I otHr Er ; 3 r H JO.c 3or.c ror.c tO.c 6o.ac tO.c 3Or. Fig. 5-1 Contents of test t

41、ape STD-331A t 1t-l - 2ol rllr, f-f-f-l | | torx l333Fr | 6 3rH I l t t r r Fis 5-2 ;,.;,;*r rrr-r- 5.1 Head Azimuth Adjustment Setting: Mode . Playback(FWDandREV) Test tape . STD-341A, 10kHz portron AC mV meter . . . OUTPUT terminals OUTPUT level control . Max. Procedure: Play back the test tape in

42、 both FWD and REV directions. Adjust the head azimuth screw to the position of maximum output level. Fig. 5-3 Azimuth adjustment points 3. 4. 5. 6. 7. 8. 9. o - 2 0 Fig. 5-4 Head azimuth adjustment 5.2 Playback Equalizer Adjustment Setting: Mode . Playback(FWDandREV) Test tape . STD-331A, 333H2 and

43、10kHz portions AC mV meter . . . OUTPUT terminals VR1703, VR1704. . . . . Max. VR1?01, VR1702 Center position Procedure: 1. Set the CT-8R to FWD direction and play back 333H2 and 10kHz portions of the test tape. 2. Adjust the VR1701 (Lch) and VR1702 (Rch) so that the 10kHz playback level reads 2dB h

44、igher than that of 333H2. 3. Set to the REV direction and play back the 10kHz portion, then confirm that the playback output deviation is within +2dBt1dB of the 333H2 portion. 4. Set to the FWD direction and play back the l-l-i t.5d9 I T 3a8 i i Fig. 5-16 Frequency response r;H zda ri I .to J A r I

45、/ l -E-T .i.-.,- I I t J O 5.10 B.L.E. Adjustment Setting: Mode TIMER switch Test tape Oscilloscope . . . Procedure: 1. Connect the jumper ground momentarily STOP OFF STD-608A Between C357 (+) ter- minal of mother assem- bly and ground cord between TPb and and then depress the 2. 3. 4. REC button. A

46、djust the VR307 so that the DC mV meter reads 2V and depress the STOP button. Set the CT-9R to REW mode and then REC mode. Adjust the VR308 so that the DC mV meter reads 2V and depress the STOP and RESET buttons. f srposA I Fig. 5-17 B.L.E. adjustment 5.11 Leader Tape Detect Adjustment Step 1. Setti

47、ng: Mode . . STOP InputSignal . 2kllz, -17dBv (0.4VP-p Sine wave) to TP6 of the Mother assembly DC mV meter . . . TP7 of the Mother assembly Procedure: 1. Remove the connector B of the Mother assem- blv. 2. Adjust the VR309 so that the DC mV meter reads 10.5V10.25V. 3. Retum the connector B to the o

48、riginal position. Fig. 5-18 Leader tape detect adjustment Step 2. Setting: Mode . . Playback Tape. . Cassetthalfwithouttape AC mV meter . . . TPG of the Mother assembly Procedure: 1. Confirm that the AC mV meter reads - 10dBv (0.6V P-P square wave). 2. If - 10dBv is exceeded, substitute the connector assembly A for the connector assembly A. Fig. 5-19 Leader tape detect adjustmenr