RCA-Victor-Co-Inc-66BX 电路原理图.pdf

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1、MANUAL OF 1947 MOST-OFTEN-NEEDED RADIO DIAGRAMS 66BX PORTABLE Chassis No. RC-1040; RC-1040A Alisnmcnt Procedure PowA Coro lUy AUfument U the preferable method. Connections for the oadlloscope are shown on the schematic diagram. Otttpvt Meter AUgnmeot.If this method Is used, connect the meter across

2、the voice coll and turn the receiver volume control to maximum. Test Oscillator.For all alignment operations, connect the low side of the test oscillator to the receiver chassis and kdep the oscillator output as low as possible to avoid AVC action. Calibratfoa 8cale.*The calibrated dial scale Is pem

3、utnently connected to chassis. It can therefore be used directly as a rmerence for alignment. With the gang at full mesh set the dial pdnter so that the left hand edge of the pointer Is Inches to the right of the point ladteated In the dial cord diawii. Stapa CooBset the hi side of test- oscillator

4、to Tone test-oec. to Tnm radio dial to Adjwt th. foUaw- in, for max. peak oatpot 1 Hi e of loop (Blue lead) in series with 0.1 afd. 4SSkc Gang at max. cap. LS,L9 (2ad LF. Traaa.)* U.L7 (lit LP. Traaa.) 2 Hi side of loop (Blue lead) in series iHdi 0.1 mfd (BottMB shi eovM in place and chassis out of

5、cablnst) 1300 kc 1300 kc Cl 1(pec.) CIO.) 3 600kc 600 kc L4 (pec.) U (U.) s* 4 220 nunf. in series wiUi a single tnm loop 4x0 in., approx. 3 m. from recetrer loop. (Chassis in calmst C-1 con nected and rear lid of cabinst closed) 1300 kc 1300 kc Cl (loop) 4*11 two peaks are found with top slugs use

6、the one with stud In the outer portion. *Adjust C1 loop cap with back cover of case closed. Access to trimmer Is made through unail slot in case provided for cable of external loop. AC-DC Oparatfoa. This receiver will operate on 105 to 125 volts. AC 50 or 60 cycles, or DC. A power cord Is stored In

7、the fiber tube which Is clamped above the chassis inside the catenet. To open (he cabinet, slide the two plastic feet in the rear of the cabinet toward each other, and raise the bk cover upward on Its hinges. Then pull the power cord plug out of the socket on the t of the chassis as shown, and take

8、out and unroll the power cord. A slot in the bottom of the cabinet nllows the ckwiim of the cabinet with the power cord passing through. Close the cabinet with the cord extending through the slot and Insert the plug Into a convenient electrical outlet. When returning to battery operation, be sure to replace the pow%r idng iftits socket Inside the case with the cord stored in the hber tube. 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