United-Motors-Service-Delco-980463 电路原理图.pdf

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1、VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION IF RADIO IS POWERED BY BATTERY ELIMINA TOR, USE 16 VOLTS FOR PROPER SOLENOID ACTION. BUICK Model 980463 CADILLAC Model 7282315 CORVETTE Model 985396 OLDS MOBILE Model 982137 (Continued on the next page adjacent at right) NOTE: ILLUS. 74

2、 IS FUSE RESISTOR. OPEN FUSE RESISTOR MAKES TRANSISTOR COLLECTOR VOLTAGE 0 VOLTS. GS Ilk V-1 I w ej-tfinso Z C4 C4 C4 C4 * QQQQ i-H O ot: co io D (Oi, 5 a .2 jj o OC 1; CJ g 2 Q C Q _ 11 r- O . * O -S g-O C g O.S o f g .3 2 S 53 3 -o S s 8eS| i s i C i QJ TO 3 “i _i w n u . * h sl U3 - o 5 aj o a si

3、 u3 - O q O a E o i) fc ? 2=3 2 1*3 t S 3 +| c .a Z S g ; | | Q 8 # !, M e i! O = B W BEBHSilBBl 收音机爱 好者资料库 RadioFans.CN VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION WEAK SIGNAL LOUDER SIGNAL (CHECK OUTPUT) (CHECK A F STAGE) m S DS 26 LOUD SIGNAL LOUDER SIGNAL (CHECK l F STAGE) (C

4、HECK.CONV STAGE) e *. A WEAK OR I | , GOOD NO SIGNAL / : . SIGNAL I / / t Y ABOUT SAME OR SLIGHTLY WEAKER n IT T r* El (CHECK R F. STAGE) JJ IL i-l U 5 BUICK 980463 JE24 p CADILLAC 7282315 .|.l tfJSL/ CORVETTE 985396 J/ OLDSMOBILE 982137 i _ (Continued) rsr* : .J : , INJECT SIGNAL V;f r or noise in

5、.r*f 05VJ SEQUENCE -4., jP K, % * - . mm 1 INJECT AT ANT SOCKET f %. CHECK ANT CIRCUIT PRINTED VIEW CHI I (K B COMPONENT VIEW o ft-: Xn IMPORTANT: With the radio installed and the car antenna plugged in, adjust the antenna trimmer “G” for maximum volume with the radio tuned to a WEAK station between

6、 600 KC and 1000 KC. (Prevents fading and station mixing). The antenna trimmer is located behind the dum my knob and can be adjusted from the front of the radio. ALIGNMENT PROCEDURE A. Connections 1. A. C. Voltmeter_ _ Across speaker voice coil 2. Signal Generator _ Connect capacitor (see chart belo

7、w for value) in series with generator lead and connect to antenna terminal. Connect generator ground lead to chassis. B. Preliminary Adjustments (in order) 1. Volume control_Maximum volume 2. Radio Tuning Pointer_ _Extreme right end of dial 3. Radio tuner cores _Rear of core 1% from end of coil form

8、. Adjustment is made using a plastic alignment tool marked 1% from end. C. Alignment Adjustments 1. Generator Output Readable A.C. voltage (% to 1 volt) across speaker voice coil 2. Proceed according to chart- Step Capacitor Signal Generator Frequency Tune Receiver to Adjust in Sequence a. .1 mfd. 2

9、62 KC Hi freq. stop A, B, C, D b. 82 mmfd. 1615 KC Hi freq. stop E, F, G c. 82 mmfd. 600 KC Sig Gen. Freq. J, K d. 82 mmfd. 1615 KC Sig. Gen. Freq. F, G e. 82 mmfd. 900 KC Sig. Gen Freq. Pointer Adjustment 3. Pointer Adjustment _With incoming 900 KC signal, insert a screwdriver in the slot of the pointer calibration adjustment link (illustration #124) and twist until the pointer is in line with “9” on the radio dial. 4. Antenna Adjustment _See notice above 19 收音机爱 好者资料库 RadioFans.CN