RCA-Victor-Co-Inc-RGG-22U 电路原理图.pdf

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1、VOLUME R-26, MOST-OFTEN-NEEDED 1966 RADIO SERVICING INFORMATION RCA VICTOR Models RGG-17B, RGG-22A, N, U, RGG-25B, E, G Chassis RC-1219A, RC-1219B 35169 1ST I.F AMPL 35170 2ND I F AMFt ta 35820-2 AUDIO DRIVER _BRCCM 35fi203(Ml f- 2.9 v lets 0O7v fla7IV ALIGNMENT PROCEDURE Connact High Sid* of Signal

2、 Generator to Signal Gen. Output Dial Pointer Setting Adjust for Max. Output T4 (3rd l-F) 455 kc Gang fully T3 (2nd l-F T2 (1st l-F Loop or piece of short wire Repeal Steps 1, 2, and 3 placed near anlenna for radiated 1620 kc Gang fuiiy open Oscillator trimmer C1B-T 1400 kc 1400 kc (rock gang if nec

3、essary) Antenna trimmer C1A-T 600 kc 600 kc (rock gang) Osc. coil T1 Repeat Steps 5. 6, and 7 35820-3(M) AUDIO OUWT .J-2O0HF V0LTAQE3 MEASURED WITHVOLTWRIYSr PROM ! BATH AY, SHOULD HOLD WITHIN 20% WITH NEW BATTERY, VOLUME COHTAOL AT MAXIMUM B HO SIGNAL K-lOOO ALL RESISTANCE VALUES IN OHMS ALL CAPACI

4、TANCE VALUES LESS THAN I.OAAE IN r THOSE ABOVE 1.0 AAE IN EXCEPT AS NOTED. F BOB IK A MATCHED PAlN ON VOL * S.CNOC =- (2 VMM T“ OVVSSSA) | LI-FtAAtTE ANTENNA ,*T LIA CHASSIS REMOVAL 1. Remove tuning and volume knobs. 2. Open case. 3. Remove three screws securing chassis. (Two at battery end of board

5、 and one at speaker end.) 4. Remove nut holding earphone jack (RC-1219B) or slide earphone jack out of slot (RC-1219A). 5. Unsolder speaker wires if necessary (or remove clips holding speaker to case). 6. Unsolder battery wires if necessary. 7. Lift board out of case. LI A/B I TO SPEAKER TERM SD. IWHT TO+8 ATT. r0 + 8ATT. to -BATT. Chassis Layout (Wiring Side) tZL-guS? SiSKrvP jjfflp *:B*s .f- 4 cie !i6Ts25,R1,1 -. x V t !*. %RZ? 1 C19 / / 112 收音机爱 好者资料库 RadioFans.CN