Expert-FD710mkII-tape-sm维修电路原理图.pdf

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1、SERVICE MANUAL ExpErl FD.7 10 MK2 Stereo Gassette Deck SPECIFICATIONS Track System 4-track 2-channel , stereo recording lnput Sensitivity/l mpedance andplayback MlC. .O.25mYl12kohms Tape Speed . 1-718 i.p.s. (4.75 cm/sec. ) L lN E 80mY 125 kohms Wowand Flutter 0.07% (WRMS) DIN . . . . 0.2mVl1 kohms

2、Frequency Output Level (at Dolby level) Response .30-18,000H2l3dB(Metal tape) LINE. .350mV 30-18,000H2 t3dB (CrOz tape) HEADPHONES 750mV 30-14,000H2 l3dB (Normal tape) (Dolby NR off ) GENERAL Signal-to-Noise Power Ratio 53dB (Dolby NR off, CrO2 or Consumption 19 watts Metal tape, CCIR/ARM weighted P

3、ower Supply AC 11O|22OV, 50/60H2 lkHz) Dimensions . 442(Wl x 354(D) x 133(H) mm The S/N is improved by 8dB with Weight (Net) 7.2k1l15.9 tbs.) Dolby NR on. Accessory Shielded Audio Cables (2). Total Harmonic Distortion . . 1.8%o (at lkHz,OVU) * DOLBy NR Erase Ratio 65dB (SRL, +10dB) o Dolby NR under

4、license from Dolby Laboratories. Bias Frequency . . . . 85kHz o The word DOLBY and Double-D-Symbol are trade- Fast Forward and marks of Dolby Laboratories. RewindTime . . . . . . TOseconds (C-60tape) Specifications and design are subject to change without notice. RadioFans.CN 收音机爱 好者资料库 StepControls

5、 to be positioned!nput connectionOutput Connection AdjustAdjust For HEAD AZIT/IUTH 1 BIAS NORMAL EO . 120 Function . . PLAY Test Tape MTT- 114 (AZl MUTH 1OkHz LIN E OUT AZIMUTH Screw (See Fis. A) MAXIMUM TAPE SPEED 2SAME AS STEP 1 Test Tape MTT-1 1 1D (F I-UTTE R 3kHz) LIN E OUT Speed Control Screw

6、(See Fig. B) -0. 5o/o - 2o/o VU METER 3 BIAS NORMAL EO. . 120 F unction R EC LrN E rN i33: Live/G N D TPB05/605 (L) TPB06/606 (R ) R EC. LEVE L R EC. BA LANCE 580mV 4SAME AS STEP 3SAME AS STEP 3VU METER SVR4Ol (L) SVR4O2 (R ) DOLBY LEVEL (+3dB) (double D mark position ) (See Fig. C) PLAYBACK LEVEL 5

7、SAME AS STEP 1 Test Tape MTT-150 (DO LBY LEVE L CALI BRATION TON E 200nWb/m) Live/G N D TP805/605 (L) TPB06/606 (R ) SVR601 (L) SVR6O2 (R ) 5B0mV BIAS TRAP 6 BIAS METAL EO. . 70 Function . . REC Live/G N D TP601 /605 (L) TP602/606 (R ) 1631 (L) 1632 (R ) M IN IMUM RECORDING LEVEL CALIBRATION 7SAME A

8、S STEP 3 400H2 LINE lN bomV Test Tape CS- 10 ( Blan k) LINE OUT R EC. LEVE L R EC. BALANCE 24OmY BSAME AS STEP 1 CS-10 (Recorded in step 7) LIN E OUT SVR631 (L) SVR632 (R ) 24OmV BIAS VOLTAGE ISAME AS STEP 3 Live/G N D TP603/605 (L) TP604/606 (R ) SVR681 (L) SV R6B2 (R ) Approx. 4.SmV 10 BIAS EXTRA

9、(CrO, ) EO. . 70 F unction R EC SAME AS STEP 9SV R684Appro x.7 mV 11SAME AS STEP 6SAME AS STEP 9SV R683Approx. 1SmV The Bias Voltages indicated in the above table do not necessarily provide the best frequency response for the unit under test. Furtheradjustment may be required to obtain optimum high

10、frequency response. ALIGNMENT PROCEDURE Note: Set the position of REC. LEVEL to MAX. REC. BALANCE to center,TlMER, MEMORY and Dolby NR to OFF and INPUT to LINE for all alignments. -2- RadioFans.CN 收音机爱 好者资料库 Fig.A (Front) Fig. B (Rear) oo SPEED CONTROL Screw Fis. C ALIGNMENT POINT VU o so 1oooh 20l

11、10z J 53 o s*8f,. uE! ee UE SVR682 TP8O5 6 SV R63 1 TP eos ( Shield Plate) tr TP806 ,ruorfr d- rA TP6O4 tt ! TP606 TP6O2 TP601 I SV R683 SV R684 SVR602SV R601 -3- RadioFans.CN 收音机爱 好者资料库 EQ, DOLBY NR, REC AMp. BOARD (DAM-3Ol) -4- RadioFans.CN 收音机爱 好者资料库 LOGIC CONTROL BOARD (DLC-138-1B) PATTERN CUT P

12、OWER SUPPLY BOARD (DPS-I93-1) DIN AMP. BOARD (DDA-I67A1 To Ee, DoLBy NR, REc Orrto$S,l -! l_r r-J I I TO EO, DOLBY NR, REC AMP BoARo (oAu-roD , ,.,R sw l -5- RadioFans.CN 收音机爱 好者资料库 PARTS LIST Part No.DescriptionSymbol No. Oty a set INTEGRATED C!RCUIT tIr crsstllt furclr0l rtY slllcl l,tcI srtlcx ?0

13、ftl sltltx D2t1 ,l t+- OI =ru : I lt sr s? s3 sr s5 s6 s, st s9 st0 s ll sr? s 13 t0 t t, (0 t f I (0 r, ) = rtrig 5.5 ;:L 001 r -l nzp Sl l5 uPctsslc tG rr il?P rc rt rroDJ tc r c 91 2 r P r c 0rt3t lc ?slt6r 0 ?sr903 0 ?scr?! 0 ?sc t3!3 0 ?s c ?09 0 I r 3I r 0 ts rlttl 0 il.gPl? tto tl r50( tsll5)

14、 0 l03l(lla00?rD 60J 60t 60, t0l ill? ,0t ,0 ? I r0 ,31 )ll ?15 ?0. riilr r0? 001.60t. t0r. a0?.12 1.65r.61?. t03 . t05. t00 t0t. t0t, 89.1?. tr0 tn ,05 ,00.,0r. ,3?.il3 .r3. ?0? tt. ,09. ,36 ?0r ? tn lod,;: I ,., L- -l p60t b ku irrl ?R c635 E ?511, R633 33 -1 I l I I I I I I I I I I J r- t 1110, (

15、:6t? slrii 200P t/? Slll0 xl0 r?ll ult llul(tl I * c. BotR0 I TL hq ,;,0 jr,rt,tp - ll i, l nrffinr I : (Rrrrnr0 Sl ? t0 I I lrrr $tor ) i c 636 ?5r., R63l 33t - Oe c632 , to I zEfr, 00riTTEE-lrrrF-rT-lTu-iEi-n.ort- -J 0tr lll ?9 e 6 o o c) o o cl03 Pil3 ctrn 003 rrr ffi,#+19)o$gijffi ?5t., R65 | ?0

16、0P c6a r llx c6a, R65l c6l3 rg G B o - ,F :Gf ia a - o- =o I c tr EI o 3 I?T N- to lll5| Rrtr Bms t_E - C660 3= 2P? d -F t-l I nsir EE I srop t532 E- | csrs -lo-:I ?sril R657 ?ooP C6.2 2lr C6t8 -o ts o CZ =l Q , t?t eE -G c- RadioFans.CN 收音机爱 好者资料库 CIRCUIT DIAGRAM TllGIGG01rTB0t I0tG-r3slBl BtlARll

17、ttr0ll t06 lc lt ll c ll t0rn0 t0tS l3l lr !,1, t14r?3 -l t?5 - l-+.8-l I tlrVV | ? I llln .lrw I o8o s6? s6r i cttt solr I I og l,n Y*o I oc rolonlo,* r 0t r0? lxl rz rut0 0t /0J1 o r= - Ol _ 0 105 g1g9- 0 033 50 Sr ? t0 rP60a R60l tutr ruI0 sHuI 0f, 0illcI0R I I e?50 r?- Dczs6iW , t czlo tL- r -Y:

18、z I _ _ ! 5a s5 l R /P 00t 0I XR L- Hlu tc rcr02 DIII AIIP P.C BOIRO D0AloTL _ r I j_-l tI 6 tsl 6 8a cosr |cr ;h, lj a J 0l s0c,u1 005 - =i s55 00r BY ltf, 6 o) t-r Ir- - =- IE o o o (J* R 6?6 t5r I tlt Rtc rtYtt :E I +z3v /rrrrct I -2,v R6t ltr Ht* ei o =TE EI d+J ,5 S-b-d o i I i= I =oE sr I sr I

19、 lt? liP c 6t6 0 006r s5 6 OllTBI XR rc /0 r , urc I r0 x rtI corl R0r t0Glc rC - -lsr,l t,h I il*- I l - IEI I 0 ,La+FPrusr o,o3 oro, *-l-r-.-r-l iryj I o,o, * D,o, c,0r t6r3.3 +.- le? IL 0,t3 e o 09 =- P- c9 t-r!? o- eo Y N : er 16 15 r. 13 t? il t0 lc80l t?3t56t a e o f -Oo ood- e lJ l lo 4 o F o

20、 o S5- | E0uA RadioFans.CN 收音机爱 好者资料库 FRONT VIEW Push Button Eject Button Case N41281-S N41265 N20398-5 Meter Plate N 3025 1 Reset Button N41291 Lever Knob (x6) N30254A Front Panel N10148 Knob 44 N4 1 660 Knob 21 N41661 BLOCK DIAGRAM F UNCTION KEY REW o F.F o PLAY - o R EC. o STOP o PAUSE - o REC. +

21、PLAY - FUNCTION KEY 121 CONTROL LOG IC VR6Ol SHOWN LEFT CHANNE L Cassette Window N41 109 0701 ,702,731 , 732F.F DRIVE AMP. SL1 F.F DR IVE SO LE NOI D o703 REC. SOLENOI DR IVE AMP. SL3 REC. DRIVE SOLENOID o704 MOTOR DRIVE 0705, 706 707,711 E RASE H EAD I FULL AUTO i sx ur-or r cr RCU rr F.G SE RVO DC MOTOR TO RlP LEVE L METER M1 ,*J HEADPHON JACK LINE OUT 0407 MUTI NG C!RCUIT LEVE L ETE R AMP. r c601 EOUALIZER AMP. r c801 DO LBY AMP. 0601, 603 R EC. AMP o409 MUTI NG CIRCUIT 0405 H EADPHON RlP H EADON LY -13- RadioFans.CN 收音机爱 好者资料库