RCA-Victor-Co-Inc-RC-1023 电路原理图.pdf

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1、MANUAL OF 1946 MOST POPULAR SERVICE DIAGRAMS OUTPUT/ TUBE- ( . OUTPUT TRANS RECT TUBE XAPONojlliC.0. Some r MODELS WITH FM SPEAKERS _ VOLTAGES ARE Slightly lower J2o mfd. Connections for ELECTRO- MAGNETIC SPEAKER rcaVictR Chassis No. RC-1023Mfr. No. 274 Connect high side of the lesl oscillator lo Tu

2、ne lest lo Turn radio dial lo Adjust the following for maximum peak output Pin 58 of 125A7 in series with 0.1 mfd. 455 kc Quiel Point al 1.600 kc end of dial C25. C26 2nd IT trans. C23, C24 1st IT trans. 600 kc 600 kc A” Band C30 (osc.) Rock gang Anl. terminal in series with 1300 kc 1300 kc A Band C

3、28 (osc.) C20 R-F) | Anl. terminal in series with 11.8 me 0.1 mid. Anl. terminal in series with 11.8 me 47 mmf. Repeal steps 7 and 8 Repeat 3 Rocking gang Repeal 3, 4 and 5 ior exact cal. no C29 (osc.)* 11.8 me 11.8 me Rock gang 11.8 me C22 (R-F) Rock gang * Use minimum capacity peak if two can be o

4、btained. Check for selection of correct peak by tuning receiver to approximately 10.9 me where a weaker signal should be received. R.C.A. Victor Model 56X10 and Radiola Models 61-5, 61-10 are similar to Model 56X5. BOTTOM VIEW OP TUBE SOCKETS 12SA7 1ST. DET. AND OSC. 1 INDICATES COMMON -L WIRING INS

5、ULATED - FROM CHASSIS K= tooo * MEASURED WITH CHANALYST OR VOLTOHMYST. VOLTAGES SHOULD HOLD WITHIN 707. WITH H7VOLT A.C. SUPPLY. ALL VOLTAGES ARE MEASURED WITH RESPECT TO -6. 12SK7 I.F. 12SQ7 2ND. DET.- A.F. - AV.C. 35LG3T OUTPUT SR2 220 K CC3 A -WW| -Hh4-e 4- Tsov. 1ST IT TRAN5. LOOP TERMS T(lVl4 a

6、nt. coil I T / C2o 5- irk A 2-15 537.6* * -8Y Cr40KC) -10V. (IfeOOKC) -fcV. (8.9 MO -7.5V. (1 MC) R5 t 15 meg 1 2ND. I.F. TRAN5- L2_ - - C 6RN - C25. /l R7 500 K VOL.CONTR; STOP AT 50 K 35Z5GT/G. RECT. 1 I Blk I ICfc! 1 . LiP9i OSC-COIL C30 d 450-6001 / BOTTOM ,bTERM- SI ON VOL.COnTr. | 3 POSITION RANGE SWITCH - SHOWN IN POSITION NO-t (MAX. CCw) NO. t - 5A0 - tR20 KC. MAX. HIGHS- NO.2-540-t20KC. M|N. HIGhS. No.3-8.4-12.0 MC. Min. HIGHS- 33ZJSpfe5. 35L6GT IZ SS7 I2SA7 /2SK7 2SQ 7 COMPILED BY M. N. BEITMAN, SUPREME PUBUCATIONS 收音机爱 好者资料库 RadioFans.CN