Zenith-Radio-Corp-8C01 电路原理图.pdf

《Zenith-Radio-Corp-8C01 电路原理图.pdf》由会员分享，可在线阅读，更多相关《Zenith-Radio-Corp-8C01 电路原理图.pdf（9页珍藏版）》请在收音机爱好者资料库上搜索。

1、收音机爱 好者资料库 RadioFans.CN OQ OQ B ti ID m ft ft 1-1 . o o b 5 0 60 O O -P 4J OQ D 43 o t m a 6 , fe lo r-t g OQ O H 4 SS g p ft .1 OQ 00 (3 C ffi ffi O 43 o: o: 43 43 d d . 43 0 43 h h g CO 43 44 OQ d H d 43 fj fj fi p O O -H 4 iH 43 43 43 p U 43 OQ d d d -H sj e e -3 -H -H d O 6 e -H o 43 5 k 4 P. p,

2、 p f4 m u c id d J d d p rH d H -H O d p p CO 0 *H p p , CD (3 d d d-lw d E-I EH E-I P tJO s 43 13 O o o o _ 00 a d d d o o d -H to 43 T-j 00 43 dp o d 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1947 MOST-OFTEN-NEEDED RADia DIAGRAMS n o X o w 1 CO C4 O o z z M 8 Pi U O O o d 05 CX5 5 g % 5 M A in A 4 D E4 qn

3、 Cd A 4 O o to 1 O 4 *d 4 1 r4 CO s d ,o S cd o (3 84 O 04 o A o4 c r4 P -P p P o4 Cd $ * d d *d O P a S - d o4 d 84 0) p cd P P 4 a o O O 4 -H CD cd *d r4 o4 P H CD Cd o O o 4 u O o4 u O S CD H A 4 c P d P P O t4 4) Cd * o* 84 rH -P 4 84 4 4 Pi -P V4 fP 4 P ja d Cd d 4 P 1 o D CO rH 4 P P B O x P 8

4、4 P P a o O x p d o 4: 4 O d A P O P p B o 4 4 P 4 P P p H p m B v p 4 O 8 o P P B ” s 84 B p o Ch p 3 P .o rP 3 rP B P P 4 iH o 4 CO P P 4 P P d r* P .O p 84 P n B O O 84 P o p iH 4 B o p rH Vi S p 4) p 4) P A P 4 a 84 P 3 P P o B p a o g B p _ p P p k P 84 B P (p P 4 t4 P P 4 P M P d 1 p C t4 c P

5、a ft p jp 4 o P A P 84 o Xi + d 84 P rH H P p P P 4 C P + 3 P 4 P 3 rH p P Pi O fy P p .B a p p p P o O d Xi P B d P o 84 S C0 4J 84 p B O 84 W k O V P P 4: H p o -P p V P u P p P p 4i fp O o4 H P 0) B p P o p p o 4 p P CD B .o Vi p P 5 P S o r4 P 03 * p P P A ) P 84 84 d p 4 1 4 CD p H d a p O rP 4

6、 3 4 P p P P M O P P 4 p h P p P P c P n p P O P O rjl p p P 84 d P p P P P P o-t o X B .Q C P P p 5 P -BO qO P C) p 4J p S o P s P 4 P p. p Oi CO B o4 4 P P P 4 *H O B p 4 o Pi P o-t P P P B S P H ,P p o p P rH , P rH *P rH 4 Bi *3 p o X 84 d o 2 8. rP 4 84 B R a P o O o O +J Q -P H a (H P ir-l B B

7、 m O *5 -P P iH 84 84 CD rS o P q w o 4 p P Pi P 4 i 收音机爱 好者资料库 RadioFans.CN VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION THIS SPRING ON BACK OF LARGE PULLEY . PULLEY SHOWN IN I 1/2 TURNS AROUND FULL COUNTERCLDCK-/pS PULLEY BONE TURM WISE POSITION AROUND RIVET A 2 1/2 TURN 1/2 TUR

8、N/ )IAL CORD DRIVE 1/2 TURN ON STUD NOTE: CODED STEREO SPEAKER LEADS MUST BE CONNECTED TO CODED SPEAKER TERMINALS. C2B BC ANT. I400KC. C2EBC OSC. 1600 KC T2A 2ND I F TRANS. LI I PRI.-1 LI2 SEC. -TIA 1ST I F TRANS -L7 PRI. L8 SEC. LC2D BC DET. 1400 KC. TIB 1ST I.F.TRANS L9 PRI. LIO SEC. L2 F.M. ANT-

9、98 MC. L3 F.M. DET 98 MC. L6 F.M.OSC. 98 MC. ZENITH RADIO CORP. Models C835E,H,R, Chassis 8C01 Alignment Information (Schematic diagram on page 175) Models C845L, M, W, Y, Chassis 8C02, are practically the same. J PHONO-RADIO SWITCH STEREO SPEAKER INPUT w _ T3A 3RD I F TRANS. - LI5 PRI. LI6 SEC. -T4

10、 DISCR. I F TRANS. -LI9 PRI. L20 SEC. -T3B 3RD I F TRANS. AI7 PRI. LI8 SEC. T2B 2ND I.F TRANS XLI3 PRI. LI4 SEC. TUNING BANDSWITCH- TONE CONTROL r LEADS TO SPEAKER. j WHITE LEAD MUST CONNECT TO WHITE iM CODED TERMINAL Ll ON SPEAKER. ALIGNMENT PROCEDURE * * -N- *_ I ELECTRO- i I STATIC i i SPEAKER I

11、! (TWEETER),1 -ON-OFF SWITCH & LOUDNESS CONTROL I.F. TRANSFORMER CORE ADJUSTMENTS ARE AS FOLLOWS : PRIMARY-ADJ. BOTTOM SECONDARY-ADJ. TOP Antenna Post FM (Remove line ant.) ADJUST TRIMMERS PURPOSE L18,17,14,13, 10,9 Align IF channel for maximum output. C2E Set oscillator to dial scale. C2D.C2B Align

12、 detector and antenna stages. L19 Align primary of discriminator for maximum reading. L20 Adjust secondary of discriminator for zero reading. L16.15 Align 3rd IF transformer, for maximum reading. L12,11 Align 2nd IF transformer for maximum reading. L8.7 Align 1st IF transformer for maximum reading. L6 Set oscillator to dial scale. L3,2 Align detector and antenna stages for maximum reading. 176 102 103 104 105