RCA-Victor-Co-Inc-RFA-15A 电路原理图.pdf

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1、1ESI CHI | ce .0033 35W4 I iowvou. COMIM RCU13, A INTERLOCK BLK JUMPER PPtMv SI USEO ON RC 1213 A, AX ONLY 455KC JUMPER Chassis LayoutRC-1213 A, AX, C, J, JX, K (Wiring side) VOLUME R-25, MOST-OFTEN-NEEDED 1965 RADIO SERVICING INFORMATION rca victor Models RFA.11V.VX. RFA. 15A, AX, V, VX, Z, ZX, use

2、 Chassis RC-1213A.AX Models RFDllV.VX, use Chassis RC-1213J.JX Model RFD 15V uses Chassis RC-1213C or K Models RFD19G.V.Z, use Chassis RC-1213D, L (Material below and on page at right) 18FW6 l-F I8FY6 OCT -1ST AUDIO V4 34GD5 AUDIO OUTPUT -=-i VOLUME RS -m R7 r,- 36AM3 RECT. ci 2 T3 OSC COIL TERM. VI

3、EW | 3.3 MEG. 7K RESISTANCE VALUES ARE IN OHMS. K* 1000 ALL CAPACITANCE VALDES LESS THAN 1.0 ARE IN uf .VALUES 1.0 A ABOVE ARE IN/*(wtifJ EXCEPT AS NOTEO VOLTAGES MEASURED TO COMMON NEGATIVE) WITH VOLTOHMYSTa SHOULO MOLD WITHIN 20% WITH RATEO LINE VOLTAGE. 12BE6 CONV Sch malic DiagramRC-1213AX, JX 1

4、2 BA 6 12AV6 DET -1ST AUOlO T-1 L CLOCK USEO IN I I* RC1213JX ONLY I | L, SI IS ON VOL.CONT WJ) i I I JN RC 1213 AX ONLY -SriI-. = 120 VOLTS 60 CYCLES POWER SUPPLY at 50C5 AUOlO OUTPUT CHASSIS RC-1213 RESISTANCE VALUES ARE IN OHMS. K- 1000 ALL CAPACITANCE VALUES LESS THAN 1.0 ARE IN pf . VALUES 1.0

5、6 ABOVE ARE tNjpflppf), EXCEPT AS NOTEO VOLTAGES MEASUREO TO COMMON NEGATIVE (A) WITH * VOLTOHMYST 6 SHOULO HOLO WITHIN 20% WITH RATEO LINE VOLTAGE. V3- VI V2 V4 I2AV6 I2BE6 I2BA6 50C5 clock UN RC-1213 C.J.K ONLY! Schematic DiagramRC-1213 A, C, J, K 1 T2 HAS TWO CORES IN RC-1213 AX. JX 120 VOLTS 60

6、CYCLES POWER SUPPLY at TO CLOCK (RC 1213 C.J.JX.KI x n ru, . 126 收音机爱 好者资料库 RadioFans.CN VOLUME R-25, MOST-OFTEN-NEEDED 1965 RADIO SERVICING INFORMATION RCA VICTOR (Continued from page adjacent at left) Models RFA11V.VX, RFA 15A, AX, V, VX, Z, ZX, all use Chassis RC-1213A.AX Models RFD11V,VX, use Ch

7、assis RC-1213J.JX Model RFD 15V uses Chassis RC-1213C or K Models RFD 19G, V,Z, use Chassis RC-1213D, L TUBE AND CHASSIS ACCESSIBILITY 1. DO NOT ATTEMPT TO REMOVE THE KNOBS The tuning and volume control knobs are held captive to the cabinet by retain- ers on their shafts. 2. Remove the back cover by

8、 lifting the protrusions on the bottom of the back cover, out of the slots in the base of the cabinet. 3. Unsolder speaker leads if necessary. Avoid putting a strain on the speaker leads. 4 Remove two chassis retainers (screws or dips), one at the volume control and one on the left end mounting. 5.

9、Grasp tuning capacitor and volume control, and pull chassis out of knobs and mounting slots. To reassemblereverse above procedure. The * Security Sealed Circuitry chassis used in these instruments are all basically similar; the differences, where they exist, are shown in the schematic diagrams, in t

10、he chassis layout diagrams and in the replacement parts list. 100 ma. type tubes are used in chassis RC- 1213AX and JX, and 150 ma. type tubes in chassis RC-1213A, C, D J, K and L. The X chassis are found in the X models. ALIGNMENT PROCEDURE Step Connect high side of signal gen to Set signal gen to

11、dial to peak output 1 Pin #1 Of V2 (12BA6 or 18FW6) through 01 mf copocitor 455 kc (Modulated) Quite point near 1600 kc T2 (2nd l-F Irons.), lop ond bottom cores (See nole) 2 Pin #7 of VI (12BE6 or I8FX6) through .01 mf copocilor T1 (1st l-F trons.), top and bottom cores 3 Repeol slops 1 ond 2 4 Sho

12、rt wir* ploced n*or onlenna to rodiot* signol 1620 kc (Moduloled) Gong fully open Cl B-T (ocs. trimmer) 5 1400 kc (Modulated) 1400 kc Cl-A-T (Anl. trimmer) 6 600 kc (Moduloted) 600 kc (rock gong) T3 (osc. coil) 7 Repeol sleps 3,4 ond 5 NOTE In chassis using the 150 ma. type tubes, T2 may have only o

13、n* core which may be odjusted from either the top or bottom VI VZ V3 V4 12BE6 12BA6 12AV6 50C5 3.2 12.3 394.4 366.3 9.2 10.4 116.4 112.5 T3 OSC COIL TERM. VIEW RESISTANCE VALUES ARE IN OHMSl K-1000 ALL CAPACITANCE VALUES LESS THAN 1.0 ARE iNuf. VALUES t.O yy * m _ C6 I I I Chassis LayoutRC-1213D, L (Wiring Side) 127 收音机爱 好者资料库 RadioFans.CN