Detrola-Radio-and-Telev-Corp-571A 电路原理图.pdf

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1、MANUAL OF 1946 MOST POPULAR SERVICE DIAGRAMS COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1946 MOST POPULAR SERVICE DIAGRAMS ALIGNMENT PROCEDURE Chassis Models 571A and 571B International Detrola 1ENERATOR CONNECTION AT RADIO IF 455 kc. 12SA7GT grid DUMMY ANTENNA

2、 .1 mfd. 1620 kc. Through loop RMA loop 1400 kc. Through loop RMA loop HF end HF end 1400 kc. TO TUNE TRIMMERS IF trimmers C D E F Osc. trimmer B REMARKS Tune to max. Set limit of band Ant. trimmer A Tune to max SOCKET VOLTAGES POSITION 12SA7GT Osc. and Mixer 12SK7GT IF Amplifier 12SQ7GT 2nd Det.1st

3、 Audio 50L6GT Power Output Rectifier 0 37.5 AC 99 99 -4-2 0 24.5 AC 0 0 85 AC 91.5 -4.2 0 24.5 AC 0 99 12.5 AC -1 0 16 12.5 AC 0 0 37.5 AC 112 AC 85 AC NOTE: All DC voltages measured with a 1000 ohm per volt meter from ON-OFF switch (B) to socket contact indicated. All AC voltages are measured from

4、ON-OFF switch (B) to socket contact indicated. Tube Layout Description C-l BM78A101 Cap., Mica, 100 mmf. T-2 B-51011 Tn C-2 BD210503 Cap., Paper, .05 mfd., 200 v. SP-1 C-51014 Spi C-3 BC31B503 Cap., Mold., Paper, .05 mfd. A-2163 Ca C-4 BD410104 - Cap., Paper, .1 mfd., 400 v. A-6158 La C-5 BD410103 C

5、ap., Paper, .01 mfd., 400 v. A-51160-1 Co C-6 BM78A471 Cap., Mica, 470 mmf. B-51162-1 Sh C-7,8 BD410203 Cap., Paper, .02 mfd., 400 v. A-51163 Cli 3-9 C-51155-1 Cap., Variable, 2 Section B-51177 Br; C-10 A-8948 Cap., Electro., 40-20 mfd., 150 v. A-51202 Lii L-l B-51243 Loop, Antenna B-51204-1 Po L-2

6、B-51159 Coil, Osc. Assembly A-5120G Ar R-l BR17B223 Resistor, 22M ohm 1/3 w. A-51237-1 Pa R-2 BR17B156 Resistor, 15 meg. 1/3 w. D-51240-1 Ca R-3 BR17B224 Resistor, 220M ohm 1/3 w. A-51241-2 Ki R-4 BR17B335 Resistor, 3.3 meg. 1/3 w. C-51242-1 Di: R-5 BR17B685 Resistor, 6.8 meg. 1/3 w. R-6, 8 BR17B474

7、 Resistor, 470M ohm 1/3 w. R-7 BR16C151 Resistor, 150 ohm. 1/2 w. R-9 B-9051-1 Control, Vol. & Sw. 500M ohm. T-l B-51010 Trans., Assembly, 1st IF COMPILED BY M. N. BEITMAN, SUPREME PUBUCATIONS SERVICE PARTS LIST - Symbol Part No. T-2 B-51011 v. SP-1 C-51014 fd. A-2163 v. A-6158 v. A-51160-1 B-51162-

8、1 l v. A-51163 B-51177 , 150 v. A-51202 B-51204-1 A-51206 A-51237-1 D-51240-1 v. A-51241-2 C-51242-1 Description Trans., Assembly, 2nd IF Speaker, 5” Dynamic, 350 ohm. Cable, Drive Lamp, Pilot No. 47 Mazda 6.3 v. Cord, AC-DC Line, 6 ft. Shaft, Drive Clip, Spring Bracket Assembly, Dial Link, Insulating Po inter Arm, Dial Drive Paper Back, Dial Cabinet (571-1) Knob Dial, Glass Indicator 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN