Belmont-Radio-Corp-533 电路原理图.pdf

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1、MANUAL OF 1940 MOST POPULAR SERVICE DIAGRAMS Belmont Radio Model 533 BOTTOM VIEW OF CHASSIS VOLTAGES measured with 1000 OHM PER MOLT VOLTMETER BETWEEN SOCKET TERMINALS AND B NOTH. SWITCH SHOULD BE IN RADIO POSITION AND SET CONNECTED TO U7V, 80 CYCLE A.C. SUPPLY SOUK*: NO SIGNAL AND VOLUME CONTROL IN

2、 MINIMUM POSITION, 03 CANNOT BE hCASLAED ViTTH O.C. VOLTMETER . bJ points of une contact. * withVrLXau to be measured W TH R.F, CHOKE IN SERIES WITH VOLTMETER LEAO. REAR OF CHASSIS SERVICE NOTES: Voltages taken from different points of circuit to chassis are measured with volume control at minimum,

3、all tubes in their sockets and speaker connected, with a volt meter having a resistance of 1000 ohms per volt. All voltages as indicated on the voltage chart are measured with 117 volt 60 cycle A.C. line. CAUTION:No aligning adjustments should be attempted without first thoroughly checking over all

4、other possible causes of trouble, such as poor installations, open or grounded antenna systems, low line voltage, defective tubes, condensers and resistors. In order to properly align this radio, the chassis should be removed from the cabinet. Circuit Diagram Ref. No. Part No. Description RESISTORS

5、R1 130176 20M ohmY w. R2 130118 600M ohmY w. R3 130118 600M ohmY w. R4 13056 100 ohmY w. R5 130170 3 megohmY w. R6 13012 50M ohmY w. R7 101217 Y megohmvolume control R8 130257 5 megohmY w. R9 130215 25 ohmY* w- RIO 1309 200M ohmY w. Rll 13037 750M ohmY w. R12 130166 150 ohmY w. R13 13097 200 ohmY w.

6、 R14 130287 1200 ohm1 watt R15 1309 200M ohmY w. R16 1309 200MY w. CONDENSERS Cl 1295 .0001 Mica Condenser C2 129114 .0003 mfd* mica C3 124136 Antenna Trimmer C4 124136 Oscillator Trimmer C5 1295 .0001 mica C6 1009 .05 x 200 v C7 1295 .0001 mica C8 10025 .002 x 600 v. C9 100119 .1 x 400 v. CIO 1001

7、.1 x 400 v. Cll 12912 .00025 mica 02 10019 .006 x 600 v. 03 11994 40 mfd. lytic150 w. v. 04 11994 20 mfd. lytic150 w. v. 05 11994 20 mfd. lytic150 w. v. 06 10011 .01 x 400 v. 07 129162 .0008 Mica Condenser 08 129163 .000025 Ceramicon Condenser C3 and C4 iu same unit 03, C14 and 05 are in same unit p

8、arts T1 112767 Antenna CoilPermeability assembly complete T2 112767 Oscillator Coil T3 108140F Input I. F. Coil-465 kc. T4 1081450 Output I. F. Coil-65 kc. T5 105108 Output Transformer T6 114193 5 P.M. Speaker T7 104206 Phono Motor T8 12228 Turntable T9 114194 Phono pick up arm 51 125113 Phono Switc

9、h 52 Switch on volume control PI 107249 Pilot light T47 Tl ana T2 iu same unit COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN MANUAL OF 1941 MOST POPULAR SERVICE DIAGRAMS 2ND. DLT. Circuit Diagram Ref. No. Part No. Description RESISTORS R1 130176 20M ohm 55 w. R2 130118 600M

10、 ohm 55 w. R3 130118 600M ohm55 w. R4 13056 100 ohm 55 w. R5 130170 3 megohm 55 w. R6 13012 50M ohm55 w. R7 101217 J4 megohmvolume control R8 130257 5 megohm55 w. R9 130215 25 ohm55 w. R10 1309 200M ohm55 w. Rll 13037 750M ohm 55 w. R12 130166 150 ohm55 w. R13 13097 200 ohm55 w. R14 130287 1200 ohm1

11、 watt R15 1309 200M ohm55 w. R16 1309 200M55 w. CONDENSERS C8 10025 .002 x 600 v. C9 100119 .1 x 400 v. CIO 1001 .1 x 400 v. Cll 12912 .00025 mica C12 10019 .006 x 600 v. C13 11994 40 mid. lytic150 w. v. C14 11994 20 mfd. lytic150 w. v. C15 11994 20 mfd. lytic150 w. v. C16 10011 .01 x 400 v. C17 129

12、162 .0008 Mica Condenser C18 129163 .000025 Ceramicon Condenser C19 10013 .05 x 400 v. Cond. C3 and C4 in same unit C13, C14 and C15 are in same unit PARTS 112866 Antenna CoilPermeability tuning assembly complete 112866 Oscillator Coil 108140F Input I. F. Coil465 kc. 108145D Output I. F. Coil465 kc.

13、 105108 Output Transformer moo C P if CnpalrM Cl 1295 .0001 Mica Condenser C2 129114 .0003 mfd. mica a 124136 Antenna Trimmer C4 124136 Oscillator Trimmer C5 1295 .0001 mica C6 1009 .05 x 200 v. 7 1295 .0001 mica T7 104206 Phono Motor T8 12228 Turntable T9 134194 Phono pick up arm 51 125113 Phono Switch 52 Switch on volume control niAL CONTROL COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN