RCA - RFG 20A电路图（清晰版）.pdf

《RCA - RFG 20A电路图（清晰版）.pdf》由会员分享，可在线阅读，更多相关《RCA - RFG 20A电路图（清晰版）.pdf（1页珍藏版）》请在收音机爱好者资料库上搜索。

1、Models RFG20A, H,V, use Chassis RC-1219A,B Models RFG 25B, E, use Chassis RC-1219BRCA VICTOR 35170 CRZ ERAITE ANTEN OVERLOAD 35168 2 AS ATOK 22 RS To OM 35454-1 35454-2 AUDIO DARIVER LOUF 2614 -am 18 EAAPHONE M 35454 3(M) AUDIO 1-29v L 35454-31M) AUDIO OUTPUT T2 T3,74 DEX DOT TERMEMAL ALIGNMENT PROC

2、EDURE Step Cannect High Side af Signal Generator to- Signal Gan. Output Dial Painter Setting Adjust far Max. Output 1 2455 kc 3 4 S Laop ar piece af short wire placed near antenna far rodigled Gang fully apen T4 (3rd I-F) T3 (2nd I-F) T2 (1st I-F) Repeol Steps 1, 2, and 3 1620 kc Gang fully apen sig

3、nal Oscillatar Irimmer CIB-T 1400 kc 6 1400 kc (rack gang if necessary) Irimmer CIA-T 7 B 600 kc 600 kc (rock gang) Osc. cail TI Repeal Steps 5, 6, and 7 Anlenna USE PROPER ALIGNMENT TOOL FOR MAKING ADJUSTMENTS. CORES ARE EASILY BROKEN BY IMPROPER HANDLING, MAKING NECESSARY RE- PLACEMENT OF ENTIRE C

4、OIL. VOLTOHMYST ITH NEW BATTERY HOULD HOLD WITHN I20% K*1000 ALL RESISTANCE VALUES ALL CAPACITANCE ALESLESOHMS SE ABOVEIO ARE IN OF EXCEPT AS NOTED DN VOL CONTR (203TERM NAL CHASSIS REMOVAL 1. Remove tuning and volume knobs. QI THRU 0S TERMIAL 2. Open case as explained under Battery Replacement. 3.

5、Remove three screws securing chassis. (Two at battery end of board and one at speaker end.) 4. Remove nut holding earphone jack (RC-1219B) or slide ear- phone jack out of slot (RC-1219A). 5. Unsolder speaker wires if necessary (or remove clips holding speaker to case). 6. Unsolder battery wires if n

6、ecessary. 7. Lift board out of case. L1 A/B R2 RED S RS R2 1.053-1 R26 R24 YRIG 21 R22 TO SPEAKER TERM. BD. 2 C3 EO7 YEL CIA/B 01S! R8 AA Q5 CIS RI9 C21 RI4 20 CR C14 74BLK CI 18 T5 C12 R7 TO JI T2 C6 102 2 B04 EARPHDNE JACK WHT TO +BATT. T3R11 C BLK C16 GRN R23 CI9 TO-BAT T. Chassis Layout (Wiring Side)