United-Motors-Service-Delco-983875 电路原理图.pdf

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1、VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION (Continued on the next page at right) BUICK Models 980462, 980464 CHEVROLET 985432, 985455, 985471 CORVAIR 985449, GMC Truck 2234003 OLDSMOBILE Model 982136 PONTIAC Models 983873, 983875 STUDEBAKER AC-3352, AC-3354, AC-3377 EElft R (awv

2、 dPI kLJ irt Ojo s.To K 4) _Q 00 * ,t: it 3 +* IB O 收音机爱 好者资料库 RadioFans.CN Weak or. no Signal”1. DS22 i VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION DELCO, Material on various models continued from preceding page at left ALIGNMENT PROCEDURE A. C. VoltmeterAcross speaker voice coi

3、l. Signal GeneratorConnect capacitor (see chart below for value) in series with generator lead and connect to antenna terminal. Connect generator 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

4、. Adjustment is made using a plastic align ment tool marked 1% from end. Generator OutputReadable A.C. voltage Ok to 1 volt) across speaker voice coil Proceed according to chart CAPACITOR .1 mfd. 82 mmfd. 82 mmfd. 82 mmfd. 82 mmfd. SIGNAL GENERATOR FREQUENCY 262 KC 1615 KC 600 KC 1615 KC 900 KC TUNE

5、 ADJUST IN RECEIVER TO SEQUENCE Hi freq. stop A, B, C, D Hi freq. stop E, F, G Sig. Gen. Freq. J, K Sig. Gen. Freq. F, G Sig. Gen. Freq. Pointer Adjustment Louder Signal Weak Signal (CHECKS A.F STAGE) (CHECKS OUTPUT) Loud Signal Louder Signal (CHECKS I.E STAGE) (CHECKS CONV. STAGE) Inject Signal DS26 or Noise in jA Sequence mrn.i About Same or Slightly Weaker (CHECKS R.F. STAGE) j ?; I / / DS24 _Good 6 I Inject at Ant. Socket CHECKS ANT CIRCUIT) (PRINTED VIEW) NUMBERS IN SQUARES ARE MAJOR TEST POINTS FOR STAGE ISOLATIONINJECT SIGNAL GENERATOR. lEUDICII iir 25 收音机爱 好者资料库 RadioFans.CN