RCA-Victor-Co-Inc-TCT-3A 电路原理图.pdf

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1、VOLUME R-22, MOST-OFTEN-NEEDED 1962 RADIO SERVICING INFORMATION rca Victor TAPE RECORDER Model 1-YC-ll Amplifier Chassis No. RS-196 Tape Transport TCT-3A ROWER CORO CONNECTOR SVON _ VOL. CONTR. RESISTANCE VALUES ARC IN OHMS. K IOOO ALL CAPACITANCE VALUES LESS THAN WO ARC IN MF, VALUES 1.0 R ABOVE AR

2、E IN MMF EXCEPT AS NOTED. VOLTAGES ARE MEASURED TO CHASSIS GROUNO WITH SENIOR VOLTOHMYST, SHOULO HOLO WITHIN 20% WITH 120 V. POWER 30URCC,NO SIGRAL . VOL. CONTR. SET AT MINIMUM. RECORD SWITCH VIEWfO FROM SHAFT END ft SHOWN IN POS. I l. PLAY E. RECOftO VOLTAGES ARC THE SAME FOR FLAY ft ACCORD POSITIO

3、NS UNLESS OTHERWISE INOICATEO (R. RECORO.P*PLAY) CHASSIS REMOVAL The amplifier chassis is fastened to the tape transport and is removed with it. For normal servicing it will not be necessary to separate the chassis from the transport. To remove chassis and transport: 1. Turn REWIND-STOP-PLAY knob to

4、 rewind position. 2. Pull off RECORD, REWIND-STOP-PLAY. SPEED CONTROL and VOLUME knobs. Note: To remove SPEED control knob, twist while gently pulling the knob. When the knob is replaced, push it on firmly until the knob seats with a click. 3. The control escutcheon is held in place by three spring

5、clips (2 at the front and one at the back), and one screw. Remove RECORD SWITCH (St) the screw and plastic washer from the center of the escutcheon and lift the escutcheon straight up and off. 4. Block the carrying handle in its extended position. 5. Remove the four (4) red screws at the corners of

6、the tape trans port. 6. Lift right side of motor board sufficently to permit disconnecting the speaker. 7. Lift out motor board and chassis. Note: Support the transport mechanism on blocks or a rack if it is to be operated while outside of the case. 8. To reassemble, reverse the foregoing procedure. v 4 EM84/6FG6 RECORD LEVEL IND. 104 收音机爱 好者资料库 RadioFans.CN