RCA-Victor-Co-Inc-RC-541-C 电路原理图.pdf

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1、收音机爱 好者资料库 RadioFans.CN PAGE 489-C Model 45X18 Chassis No. RC -541-C Five -Tube, Single -Band, AC -DC Superheterodyne Receiver Alignment Procedure Output Meter Alignment-Connect the meter across the voice coil, and turn the receiver volume control to maximum. Pre -Setting Dial.-With gang condenser i

2、n full mesh, the pointer should be adjusted so that it is horizontal. Push Button Adjustment.-The push -buttons should be adjusted for five favorite stations after the receiver is operating, and has had a brief warm-up period. Any standard broadcasting stations may be chosen, it being preferable to

3、adjust for stations in the order of frequency, from low to high. Proceed as follows: 1. Push in each button and loosen the push-button screws in back of the station marker recesses. 2. Accurately tune -in the first station manually. 3. With the station accurately tuned, press in the first push-butto

4、n and tighten the screw. 4. Place station marker tab in the recess. 5. Adjust four remaining push buttons in a similar manner. Steps Connect the high side of test- oscillator to- Tune test-osc. to- Turn radio dial to Adjust the follow - ing for max. peak output 1 12SK7 I -F grid, in series with .01

5、mfd. 455 kc Quiet point 1600 kc end of dial C10, C9 2nd I -F Transformer 2 12SA7 1st Det. grid in series with .01 mfd. C8, C7 1st I -F Transformer 3 Ant. terminal in series with 100 mmfd. 1800 kc 1600 kc C3 (osc.) 4 Radiation Loop 1,300 kc Signal Cl (ant.) 5 Repeat steps 3 and 4. Precautionary Lead

6、Dress: 1. Dress 1st I -F plate and grid leads against chassis and away from each other. 2. Dress plate lead from 12SK7 close to chassis. 3. Dress leads from terminal board on loop support away from loop. Power -Supply Polarity.-For operation on d -c, the power must be inserted in the outlet for corr

7、ect polarity. If the set not function, reverse the plug. On a -c, reversal of the plug reduce hum. Specifications plug does may FREQUENCY RANGE 540-1,600 kc Intermediate Frequency 455 kc POWER -SUPPLY RATINGS 105-125 volts, direct current, or 50-60 cycles 30 watts POWER OUTPUT (125 volts, 60 cycle s

8、upply) Undistorted 0 8 watts Maximum 1 2 watts LOUDSPEAKER 5 inch electrodynamic Replacement Parts Insist on genuine factory -tested parts, which are readily identified end may be purchased from authorized dealers. STOCK No. DESCRIPTION STOCK No. DESCRIPTION CHASSIS ASSEMBLIES 36318 Screw-Push arm s

9、crew (RC -541C) 36309 36916 Shaft-Push button shaft. Shaft-Tuning shaft 36088 Bearing-Tuning shaft bearing and nut 34449 Socket-Dial lamp socket 36217 Button-Push button 31251 Socket-Tube socket 35332 Can-Shield can for I.F. transformer Stcck No. 37364 38131 35098 ,Spring-Drive cord spring Spring-Sp

10、ring to hold I.F. transformer in shield 12952 Capacitor -330 mmfd. can 33584 Capacitor-.005 mfd. 36232 Transformer-First I.F. transformer 4937 Capacitor-.01 mfd. 37364 Transformer-Second I.F. transformer-less 11315 Capacitor-.015 mfd. shield can 32787 Capcitor-.05 mfd. 35056 Transformer-Output trans

11、former 34505 Capacitor -0.2 mfd. 34373 Washer-C washer for tuning shaft C 35348 Capacitor-Electrolytic comprising 1 section of 36311 Washer-Dial drum washer 30 mfd., and 1 section of 20 mfd. 35571 Coil-Oscillator coil SPEAKER ASSEMBLIES 36315 Condenser-Variable tuning condenser and push button mecha

12、nism (RL -86-2) 35728 Control-Volume control and power switch 32907 Cap-Dust cap 37385 Dial-Dial scale 35570 Cone-Cone complete with voice coil 36310 Drum-Dial drum 34450 Speaker -5 inch dynamic speaker, complete with 38645 Fastener-Dial scale fastener cone and voice coil-less output transformer. 36

13、314 Frame-Dial frame complete with 3 wood pulleys -less drum and dial SPEAKER ASSEMBLIES 36216 Indicator-Station selector indicator (39223-2) 11765 Lamp-Dial lamp 37366 Loop-Antenna loop complete 35065 Cone-Cone complete with voice coil 36317 Plate-Push arm lock plate 36312 Pulley-Large drive cord p

14、ulley MISCELLANEOUS ASSEMBLIES 36313 Pulley-Small drive cord pulley 32535 Resistor -120 ohms, ; watt 37367 Back-Cabinet back 13998 Resistor -22,000 ohms, i watt 36219 Crystal-Dial scale crystal 12264 Resistor -220,000 ohms, i watt 33317 Fastener-Push fastener for cabinet back 30648 Resistor -470,000

15、 ohms, watt 35078 Knob-Volume control or tuning knob 12679 Resistor -2.2 meg., i watt 34317 Marker-Station selector marker 13601 Resistor -10 meg., * watt 30900 Spring-Retaining spring for knob RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN PAGE 490-C -7 45X18 t_y 0 -HH RN N Ia0 u Or OS r HI 2g- IIT A/II dNO1 1 m 3iuAIm W I p p = (oQ tG * Vr J U N 4U xNd ik i r- T K W I - N ff ci I d z N N N_ O. H o N N +11 e- 0 h i z 收音机爱 好者资料库 RadioFans.CN