United-Motors-Service-Delco-989129 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

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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