United-Motors-Service-Delco-985453 电路原理图.pdf

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1、26 DS 503 AMP. OUTPUT 收音机爱 好者资料库 RadioFans.CN VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION DELCO, various models, continued from preceding page adjacent at left. ALIGNMENT PROCEDURE A. C. VoltmeterAcross speaker voice coil. Signal GeneratorConnect capacitor (see chart belowfor val

2、ue) in series with generator lead and connect to antenna terminal. Connect genera or ground lead to chassis. Volume controlMaximum volume Radio Tuning PointerExtreme right end of dial. Radio tuner coresRear of core 1% from end of coil form. Adjustment is made using a plastic align ment tool marked 1

3、% from end. Generator OutputReadable A.C. voltage (% to 1 volt) across speaker voice coil Proceed according to chart FUSS *F3 y STEP CAPACITOR SIGNAL GENERATOR FREQUENCY TUNE RECEIVER TO ADJUST IN SEQUENCE a. b. c. d. e. .1 mfd. 68 mmfd. 68 mmfd. 68 mmfd. 68 mmfd. 262 KC 1615 KC 600 KC 1615 KC 900 K

4、C Hi freq. stop Hi freq. stop Sig. Gen. Freq. Sig. Gen. Freq. Sig. Gen. Freq. A, B, C, D E, F, G J, K F, G Pointer Adjustment Louder Signal Weak Signal (CHECKS A.E STAGE) (CHECKS OUTPUT) Loud Signal Louder Signal (CHECKS I.E STAGE) (CHECKS CONV. STAGE) Inject Signal or Noise n Sequence About Same or

5、 Slightly Weaker (CHECKS R F. STAGE) ig sp| (5y _Good /“Signal Inject at Ant. Socket CHECKS ANT CIRCUIT) CIRCUIT BOARD (PRINTED VIEW) NUMBERS IN SQUARES ARE MAJOR TEST POINTS FOR STAGE ISOLATIONINJECT SIGNAL GENERATOR. laino 11111 KOIQ J I 36 +1 I-5= I_i CIRCUIT BOARD COMPONENT VIEW IRON CORE ALIGNMENT 23 收音机爱 好者资料库 RadioFans.CN