Crosley-Corp-70 电路原理图.pdf

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1、MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS CROSLEY MODELS 02CP. 02CQ CHASSIS MODEL No. 70 SOCKET VOLTAGES MEASURED AT 117.5 V. LINE (BETWEEN SOCKET PIN AND CHASSIS). WITH 1006 OHM PER 500 V. RANGE VOLTMETER (D. C.) PIN NUMBER FUNCTION 6SK7R. F. Amplifier. 6SA7Converter. 6SK7I. F. Amplifier. 6SQ7De

2、t. A. S. C. 1st A. F. . 6J5GTPhase Inverter*. 6J5GT(2)P. P. A. F. Drivers. 6AC5GT(2)P. P. Output- 5Y3GRectifier. Gnd. Gnd. Gnd. 0 Gnd. 74 6.3 A. C. 180 Gnd. Gnd. 180 74 0 JO-S. W. 14.0 B. C./ 6.3 A. C. 0 Gnd. Gnd. Gnd. 0 Gnd. 74 6.3 A. C. 180 Gnd. 0 Gnd. 0 0 75 6.3 A. C. Gnd. Gnd. Gnd. 145 J. B. 0 j

3、. ! 8.3 A. C. 40 Gnd. Gnd. 180 0 0 J* 6.3 A. C. 6.5 Gnd Gnd. 304 J. B. 6.5 J. B. 6.3 A. C. Gnd. N. C. 310 J. B. 308 A. C. J. B. 308 A. C. J. B. 310 J. B.Junction Block . I -oi 5 fM5 MAX. POWER OUTPUT.12.0 WATTS POWER CONSUMPTION. 90 WATTS DROP ACROSS SPEAKER FIELD. 120 VOLTS N. C.No Connection cn z

4、B 5 = So /fis /St /St 4 M o Ot ot Ot at 8 “ |ge I IimmlP S H-0 i * I 5 mJL COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS CROSLEY MODELS 02CF. 02CQ CHASSIS MODEL No. 70 THE AUTOMATIC RECORD CHANGER This record changer will automat

5、ically play a series of twelve 10 or ten 12 records of the standard 78 R. P. M. type. The records must be all one size when loading, and may consist of less records than listed above. Records with or without a starting groove will operate the changer satisfactorily and the inside stopping groove may

6、 be a spiral or an eccentric. This means that any type of record, regardless of make, will operate the automatic mechanism. Records of any size up to 12 may be played manually. The records are supported for automatic operation in two points, in the center by the center post, and on the edge by the r

7、ecord holder post. Align ment Sequence Dummy Antenna Frequency Setting Input Connection to Receiver Band Switch Tuning Cond. Setting Trimmer Adjusted Remarks 1. .02 MF, 455 Kc. Stator lug Rear sec- lion of Gang Cond. B. (. Fully open 2nd I-F (2) 1st I-F (2) Adjust for Maximum. Adjust for Masymum. 2.

8、 .0002 Mr. 1630 Kc. Am. Terminal B. C. Fully open B. C. OSC* Trimmer Adjust for peak: gang does not have to tune thru signal. Loop must be connected. 3. .0002 MF. 600 Kc. Ant. Terminal B. C. Approx. 60 on dial B. C. “OSC” Series Trimmer Adjust for maximum output while rock ing gang thru signal. 1. R

9、epeat Step No. 2 to check possible shift due to series adjust mem. .0002 MF. 1400 Kc. Ant. Terminal H. C. Approx. 140 on dial B. C. ANT Trimmer B. C. R-F” Trimmer Adjust for maximum output do not touch B. C. Osc. Trimmer. Adjust for maximum output. 6. 4(H) ohm (carbon) 5.3 Me. Ant. Terminal 1*. io-

10、F illy open Pol ”OSC Adjust for peak; gang does not have to tune thru signal. 7. 400 ohm (carbon) 5.0 Me. Ant. Terminal Police Approx. 5.0 Pol ANT” Trimmer Adjust for maximum output. s. 400 ohm (carbon) 18.3 Me. Ant. Terminal S. W. Fully open S. W. OSC” Adjust for peak. Gang does not have to tune th

11、ru signal. 9. 400 ohm (carbon) 18.0 Me. Ant. Terminal s. v. Approx. 18 S. W. “ANT Trimmer Adjust for maximum output while rocking gang thru signal. Repeat the above alignment procedure for more accurate adjustments. Always keep signal generator output as low as possible to prevent action of the A. V

12、. C. circuit. When aligning the shortwave bands “OSC” trimmers care must be exercised to see that the circuits are aligned on the correct frequency and not on the image which is approximately 910 kilocycles less as indicated on the Receiver dial. To check, increase generator output, tune-in the gene

13、rator frequency and then tune-in the image frequency which should be weaker than the fundamental and come in approximately 910 kilocycles lower on the Receiver dial than the fundamental. If image cannot be tuned-in, the“OSC” trimmer is adjusted to the wrong peak. (Correct peak is the second peak on

14、trimmer from the closed position). SETTING THE PUSH BUTTONS The six station selector push buttons are set up by means of two adjusting screws per button. These adjusting screws are made accessible by removing the station selector push button escutcheon. Pry off carefully being careful not to scratch

15、 the main escut cheon. Select the call letter tabs of your six favorite broadcast stations from the station call letter sheets supplied. Place the call letter tabs in the win dow above that push button which is to be adjusted for that station COMPILED BY M. N. BEITMAN. SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN