Pioneer-SX990-rec-sch维修电路原理图.pdf

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1、sx-s|90 AM /FM STEREO RECEIVER sx-990 ROUND LABEL UNIT FSAWFWl/FVZWKCWKUWNBW TUNER UNIT FM FRONT END W1-030 W l-028 AWB- OO 1Wr-028 W1-028 Wi-028 FM IF UNIT W2-03iW2-032wr2-032W2-032 W2-032 W2-032 MPX UNIT W3- 026W3-026 WJ - U Z OW3-026 W3-026W3-026 AM TUNER UNIT W4- 008 W4- 008w14- 008 W4- 008 W4-

2、008Vv4-0r5 MUTING UNITwl 8- 026 W8- 026 W8- 026 W8-026 W8- 026 W8-026 HEAD AMP UNIT w5- 049W5-049W5-049 W5-049 W5-049 W5-049 CONTROL AMP UNITW5- 079 W5-079 W5- 079 W5-079 W5-079 W5-079 MAIN AMP UNIT Vll15-060W5-060 W5-060 W5-060 W5-060 w23- 006 POWER SUPPLY UNIT lilt6-022 Wo - u t lWo - v l lW6-022W

3、6-022 iv1 6- 065 SWITCH UNITwl5-081W5-081 wl 5-081W5-081 W5-081 wl5-081 SWITCH UNITwl 5- 082 W5-082 wl5-082 W5-082W5-082 wl5-082 SWITCH UNIT TONE COLOR UNIT CONTROL UNIT Vvl5-080wl 5- 080lll15-080wl5-080wl 5- 080 wi 5-080 MIC AMP UNIT REVERBE AMP UNIT REVERBE UNIT INDICATOR UNITwl8-012wt8-012wl8-012

4、wl8 - 012 Iill8-012wl8 - 012 3 7 RadioFans.CN 收音机爱 好者资料库 Model SX-990 E o zzN-o e9ooi 3 t : 3 3 1 UJ-IU Etsl lEl s t 3 F 6 E r t i f , I Fl lEl Lt t9 =oo z 7 z E - o L - 8 . 1 oetee q 9 9 9 9 6 S H H H N o d E F F E ; o 3 d= F a E d q - u 9 9 o g g o o o * * z z z H H H g 9 9 -NO9O = 6 3 = o o o i 6

5、 6 r 9 t d = 5 R . . l F ; 5 E Z c 620-9lr I|Nn dWV ouLNoJ EG) -o ( )Ja - A . v A ( , e z lv 9q f , = lCl o : ( tt o 6 ? O - 9 l l l.lNn F z U z F = o o- r3 = o z uo FO =o E- r- 53 38 RadioFans.CN 收音机爱 好者资料库 sx-990 SX-990 for FVW model - .c d c F =,oo= 3 H * 6 g E d dFd *ICEI 3 E;lEl EE E Eoo X a .

6、1 4 u Y + i r r ; : c d E d d d d = = Y i u 4 E E E e 9 - 5 6 ; ; i l - .:- J o o o I X l-l oiH; I = c , i.- ,/: _-;/ o 6) 9 | (el r:tr + R| - ed_B LINN dhV N1VI.I 3 .S; - 090-slM lv = ;dE = = (aYu = ll-r 080-sLM -trNn lourNol z _- =? L - d ; ) / o a ? e rs- o ) os ? o TIA N =-. o o o o - J -l ( o 9

7、20-8LM * INN E = ? ? elo-str, I I N O d H V C V H o = - 6 ! - f i .-A t- A ( L ;it dB 3 9 RadioFans.CN 收音机爱 好者资料库 sx-990for KCW model + r E !d z = x $ J ; = 5 ii -Ani o r u u E , , 3 = o- B 3 t t a Y 3 p t i : + = :,t - ; z a i O - ) E e o - o - = = l I E I U! E xH Oo zz AI l;l tl tql a rt t E l EI

8、: E i = - ; i- 5 s o i i 6 b E E = z Mz/ ut| ezb 3 l;l til EI ils ffi:;gF o2o -. *12 : 9el0.00r j r Evoou F B J o9o-srM llNn d!lv Nlvll :_-t VUOI NI-NIVH o : - 9 o e ( s ) v o o s d oYl o 090-9rM !Nn 10urN03 ? 6LO-slM llNn dlv 10urN03 o Y / o ; o .*Yts ; 6 e 56 ? sto-stm rlNn dl,lV 0V3H R 40 RadioFa

9、ns.CN 收音机爱 好者资料库 sx-s|90 SX-990 for KUW model a q q 9e,/000! ,IJ .3o1 F n EI.E EI LFI t.5t tEl l;l l-l lal UUU tr+ YYI l b l t l t6l tFl ? 6 Jh , = = r e ) E ? zz- : 9 9 o o o I X q r5 61 : ost ( o 9 a - # - w / ) sG) r( t-e sru I O 090-srM ItNn dlv Nrvl.l zlv | 1v - 9 + F N v =:N ig3 - - d U - = 09

10、0-slM rrNn loulNo) 2- S e i = _ or:ol_+ ? ji J V r r z ) - s r 9 e Y 6: .6Yr -OvO - =Ig r/5 (l/ o:(o (9o e+ ? 6 t 0 - Sl M rtNn dhv 0v3H F z zl i s - t t00-zsM 4 1 RadioFans.CN 收音机爱 好者资料库 SX-990 for FVZW model tr+!q *tro z2 ;Eo-= z lood H E;T E3 oJ .Et = t5l l;l -tFl t - F E l h r h t E lil lll lrl

11、Fl R. a ; l;1 tTl lt g= =- a L 3 r z 2 Eo 6 = F = ; s 3 o o - a I ! o o o Y ; a , ; P ; ; G ; ; ; - : e 0 3 0 ; 3 e 0 3 0 t a. : ; ? * u t r = t _ = ozz4 o.x9 - E d =3 EI t5t * lil i E xi l:l ll LFt t,5l l;l l;l UU : ,trl-o tl3; 6-u INN dHV NIVI,I900 -ezM zJv ,lv t e?- = = 080-9rl/ trNn l0urN05 z :

12、z : F 2 , : 6L0-slM l-lN0 dtlv -l0B1N0l - , t v a = z r-p tt il - d t e)_ i= (o) u- a -=.2 g - o O (a o - l o R ) l - 60 -9ti,l l.tNn drlv ovlH z o . = I + B -ri-ttzv) I I I I t-l 1 7 , I I I I I I -J IRrC5 25K1sYGR OO OP 2S K 3 3 D E 0 0 0 P 3SK22GR 120Q t000P I I ;M IF UNIT FH I F U N I T 04 TAI06

13、0Pi, TA?060P0, TA060Pa TA?060P . t + t 5 v t2 Tt3 041 R 6220K 9t E) a+ l E 3 O OUT o t . T 9 x 4s RadioFans.CN 收音机爱 好者资料库 FM lF UNIT for FVW, FVZW, KCW, KUW, NBW model 2 I 04 TA106OP03 TA.l06oP a, TA?060P o, TA?060P ls|8s :Usg-!1,0 l+ E 3 O OUI :-!_I:! j1r_ J T3 TqJ-041 F M I F UNI T w 1 2 - 0 3 2 M

14、PX UNIT M P X U N I T w 1 3 - 0 2 6 t/ tt iil i t I ltrl I I fl - r t o O 46 RadioFans.CN 收音机爱 好者资料库 01 2sc46104 25C460 D?1N60 032SC450 TUNER UNII -t- o T .l P 14V .- t os 250460 $ , 1 4 - 0 1 5 sx-s|9cl for NBW model 47 RadioFans.CN 收音机爱 好者资料库 MUTING UNIT MUTING UNIT w t 8 - 0 2 6 CONTROL AMP UNIT

15、HEAD AMP UNIT CONTROL UNIT 0r 2sc458LG 03 2SC458LG as 2SC458LG r- -i tl I i, c,.$oP Jl; | | i I I Cr 3 3t -/ c ,s l0lr5 I I I t I I I I I I I I I I Rr 330K Rn33t, , _ t + e t ; - l N rx t5E s F f - ro-dP -l- * . - o l e d + | , ! R r 210kR r22K I I I I I Q z 2 ! 001 K, 0003 c45lrLC R zs22 a 2SC458LG

16、 05 2SC458LG 33K c E 10/1s I I ;il3 R 1 o 3 3 K J E i c4 100P -l- c5 dr lOK R n22R s 001R y22r HEAD AMP UNIT $r15 - 049 CONTROL UNIT w15-080 CONTROL AMP UNIT w r 5 - 0 ? 9 0,2SC8?l a,zSC811 c0.2/25 ; - al l-. (High Cut) 48 RadioFans.CN 收音机爱 好者资料库 sx-990 MAIN AMP UNIT 062SC491 22K v: 2SC491 02SA497 0

17、,2SC193 2SC491 oaA4gl or,2SC193 MAIN AMP UNIT for NBW model M A I N A M P U N I T w23-OO6 0i, 25C193 0 ! 25C?93 = f_=* n,zsc+sr $ 49 RadioFans.CN 收音机爱 好者资料库 INDICATOR UNIT TNDICATOR UNIT w 1 8 - 0 1 2 PUSH SWITCH UNIT PUSH SWITCH UNIT w r 5 - 0 8 2 LOs/ CUT FILTER HIGH CUT FILTER ! - - - - - - - - - J PUSH SWITCH UNIT POWER SUPPLY UNIT POWER SUPPLY UNIT w l 6 - 0 2 2 tl PUSH SWITCH UNIT w l 5 - 0 8 1 50 RadioFans.CN 收音机爱 好者资料库 SX-99O Y UNIT for NBW model RadioFans.CN 收音机爱 好者资料库