Crosley-Corp-62TD 电路原理图.pdf

MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS FOR CROSLEY MODEL 62-TA, 62-TC, 62-TD CHASSIS Ho. 37 ALIGNMENT PROCEDURE Output*RMeter Connections.To Voice Coil Terminals of Speaker or to Plate of 35L6GT and Cathode of 35Z5GT Generator Ground Connections.In Series with .001 MFD. Condenser Dummy Antenna.400 Ohm Carbon Resistor in Series with Generator Output Position of Volume Control .Fully On ALIGNMENT CHART Signal Generator Frequency Input Setting_ 456 Kc. Antenna 456 Antenna Tuning Cond. Setting Fully open Fully open Approx. 15 on dial Approx. 1400 on dial Trimmer Adjusted 2nd I-F (2) lstl-F (2) Wave trap S. W. Ant.” B. C. ”OSC” (front trimmer right end of chassis) B. C. ANT” Adjust for maximum output. Adjust for minimum output. Adjust for maximum output. Adjust for maximum output while rocking gang thru signal. Adjust for maximum output. Gang does not have to tune thru _signal._ Adjust for maximum output. Tops of I. F. Trans. Center Section of 3 Sec. Trimmer. Top of Tuning _Condenser L. H. Section of 3 Sec. Trimmer. R. H. Section of 3 Sec. Trimmer. On Cabinet Back. When aligning the short wave band OSC, trimmer care must be exercised to see that the circuits are aligned on correct frequency and not on the image which is approximately 910 kilocycles less as indicated on the dial. To check, increase generator output, tune-in the generator frequency and then tune-in the image frequency which should be weaker than the fuimamentai ana come in approximately 910 kilocycles lower on the dial than the fundamental. If image cannot be tuned in, the ObC , adjusted to the wrong peak. (Correct peak is the second peak on trimmer from the closed position). Repeat original procedure for more accurate adjustments. Always keep signal generator output low as possible to prevent action or a.o.l. circu . Socket Voltage is measured ft 117.5 V line TUBE VOLTAGE CHART (BETWEEN SOCKET PINS AND B) WITH 1000 OHM PER VOLT500 V. RANGE D. C. VOLTMETER FUNCTION PIN NUMBER 4 5 All voltages may vary 10% of values indicated. Neg. indicates Neg. reading on Voltmeter Scale but of too small a value to record accurately. Measured on 100 V. Scale. Power consumption at 117.5 V. line, 30 watts. Drop across Speaker Field100 V. Current thru Speaker Fiel o 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN