United-Motors-Service-Delco-988823 电路原理图.pdf

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1、12 AD6 I2EA6 I2DV8 OSC.-MOD I F AMP. DET-AUD VOLUME R-18, MOST-OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION D E L C O PONTIAC Model 988823 (Continued on page 43) . a CHEVROLET Model 987730, CORVETTE #3748611, 44fk S3 OLDSMOBILE 989129 are similar. | J 1| g CM 1 SV-HS A I i j? PS-* ft?) n J _ 1 I I

2、tol* tnujp li_LJ -fF-E 1 KN M-J I V T M Voltages measured terminal to chassis with a VTVMno signal and 12.0 volts at Ulus. 35.Tuner stopped. Oscillator grid voltage taken with set tuned to 1000 KC Total A” drain at 12V-2.5 amperes Tolerance on all voltage 10% Colors of terminals on service part. *In

3、dicates lead from tuner coil assembly. 00Before measuring transistor voltages, the shorting-type speaker socket must he opened and a 4 ohm speaker connected. If transistor is re placed, adjust bias potentiometer (Illus. 83) to obtain proper collector voltage with 12 volts input to radio. g0! w w o b

4、fi a s u t: a goS A M 5/5 nan ut o a c w H H si few j pw 9 o w 9 S j- o s S o o w H .8 3 5 W J5 s g V) Am aS z H wSw s E3 f:V PUSHBUTTON SETUP PROCEDURE 1. Pull button to the left and out. 2. Tune in desired station manually. 3. Push button all the way in. 42 收音机爱 好者资料库 RadioFans.CN WHITE NUMBERS ON

5、 PRINTED CIRCUIT BOARD DRAWING CORRESPOND TO NUMBERS ENCIRCLED ON SCHEMATIC. VOLUME R-18, MOST-OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION PONTIAC Model 988823 (Continued) CHEVROLET 987730, CORVETTE 3748611, and OLDSMOBILE Model 989129 are similar. C u D O 05H m u 26 -1 5, | L a a a 1 1 | m ?r ; f 3 Q 0E3 o o .gp .gj 0-1 0-1 0-1 *r-i 5 CO CO CO CO T CO CO CD CO +4 o o o o 5? o o o o o H o o o o H M CD rf lO 5 so ter c-a = i I.G M a S3 E .a 3= |c H : m :.sg O 1 o- S 8 8 o -2 - . t oo 1 43 收音机爱 好者资料库 RadioFans.CN