Noblitt-Sparks-Industries-Inc-RE-393 电路原理图.pdf

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1、VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION ARVIN INDUSTRIES Model 957T Chassis RE-393 ALIGNMENT PROCEDURE PRELIMINARY: Output meter connection.Across speaker voice coil Output meter reading to indicate 500 milliwatts (standard output). . . 1.26 volts Connection of generator grou

2、nd lead.Floating ground Generator modulation.30% 400 cycles Position of Volume Control.Fully clockwise Position of Variable Frequency of Generator Dummy Antenna Generator Output Connection Trimmers Adjusted in Order Shown for Maximum Output Function of Trimmer 455 Kc 1650 Kc 1400 Kc 1000 Kc 600 Kc .

3、05 p fd Pin 7 12BE6 * Test Loop * Test Loop * Test Loop * Test Loop Al, A2, A3, A4 A5 A6 Fan CIA Plates Fan CIA Plates I.F. Oscillator Antenna * Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6 in dia meter placed about one foot from the set loop. The alignment procedure should be

4、repeated in the original order for greatest accuracy. Xi) VOLUME CONTROL X?) AUT POINTER CTATIOH TI FTTOR (* HI 35*-lfcBE6 o (MAs) A, (.MV* (5CC5) K) ill ! Q / 2 V-A-t. AC* 3 & 1 6 5 4 TUBE LAYOUT / * r u / X =ii x * (5) ALARM ST SLUP CONTROL (5) ON-OFF SWITCH AND AUTO CONTROL OWTOOU V/ AT POSITION

5、OF PULLET WITH VARIABLE CONDENSER AT MAXIMUM CAPACITY , KHftSSTW-w-f- AMO ARE TAX EH WITH NO SIWAL. AC LINE VOLTAGE AT 117V AC. MEASURED WITH VACUUM TUBE VCLTMCTER *- 20V RESISTANCE VALUES ARE M o* x i.ooo , mec iooo,cca CAPACITANCE VALUES LBS THAN (II ARE IN MICROFARADS, Lf), AM) VALUES OF 11 I OR GREATER ARC M MKROMKMORMAOS. (A-O , UNLESS OTHERWISE MWCATED 3 3 34 3 4 3 4 CLOCK ASSEMBLY i SOCKET APPLIANCE jPLUO (BOTTOM OUTLET VIEW) - 10 收音机爱 好者资料库 RadioFans.CN