Crosley-Corp-7-2 电路原理图.pdf

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1、MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS CROSLEY RADIO MODEL 52-TP CHASSIS No. 72 remove two screws hoIdin* ioop antenna to rear of chassis tube! ay time U S nCCeSSary to replace one or more tubes- Figure 1 will show the correct position and function of each type of tfelifln theehmfse n?5ke S)Ur

2、e ia;u tube? “7 pressed down in their respective sockets and that power cord plug is your nearesthCrosiey deader Sh ld a visual inspection fail to indicate the trouble, call a competent radio service manpreferably orirtnaiyflneS1mintvasnrt0f.l!leiiiShestv?Uality are,usgd throughout in the constructi

3、on of all Ciosley products. In order that the CROSLEY PATS be m4dhouldseebuifed r6CelVer may be maintained 11 is recommended that only GENUNIE ALIGNMENT PROCEDURE Preliminary Output Meter Connections.Plate and screen of 50L6 Generator Ground Connections . . . Ground Lead and Chassis Dummy Antenna to

4、 be in series with generator output Position of Volume Control.Fully on A I2SK7 3525 *# 4.|Q8 r-FAMP RECTIFIER J POVCR CONSUMPTION AT IITSaSOWATTS 1 AK DROP ACROSS SPEAKER FlELOESVOLTS N APPROX. MAX. POWER OUTPUT* l.l WATTS JJTJUNCTION BLOCK.H-WTA, P-PLATE.K-CATHOOg, SmtSUPPSCSSOW 6RO 11 1 - in VOLT

5、AGES MCASMICDtETWCEN SOCKET PM ft GNO. SiOE OF VOL CONI WTTH2SOVOLT. 1000 OHMS. PER. VOLT METER READINGS MAY VARY IOX I2SQ7 DET.A.V.C. Isl.A-F Alignment Sequence Dummy Antenna 400 ohm Carbon Resistor 400 ohm Carbon Frequency Input Connection Setting to Receiver 455 KC. Antenna Lead Antenna Lead (red

6、) Antenna Lead (red) Antenna Lead (red) Antenna Lead (red) Tuning Cond. Setting Trimmer Adjusted Remarks Fully Open 1st I-K(2) 2nd I-H2) Adjust for maximum signal. Adjust for maximum signal. Fully Open S.W. “Osc.” Adjust for maximum output. 15 on Dial SAV/Ant,” Adjust for maximum signal rocking gang

7、 through it. while Fully Open B.C.-Osc.” Adjust for maximum output. Gang does not have to tune through signal 140 Dial B.C/Ant. Adjust for maximum output. auencvmrtnn/nn th.1S?Id v. 9s0 trl”me.rlc st be exercised to see that the circuit is aligned on the correct fre- outnut Snethe approximately 910

8、kilocycles less as indicated on the dial. To check, increase generator come inSnroximatfit iy and theJl tune in the image frequency which should be weaker than the fundamental and Tsiustecfn th? 8n dial than the fundamental. If image cannot be tuned in. the OSO trimmer Drocetbire for i pe$-k is tba

9、sacond Peak trimmer from the closed position.) Repeat original alignment procedure for more accurate adjustments. Keep signal generator output low as possible to prevent action of A.S.C. circuit. VOLUME CONTROL PHONO- ARM - SOLS ISSK7 455 KC. IF COMPILED BY M. N. BEITMAN. SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN