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1、VOLUME R-19, MOST-OFTEN-NEEDED 1959 RADIO SERVICING INFORMATION CHEVROLET MODEL 987891 (For additional material see the next page adjacent at right) VOLTAGES MEASURED TERMINAL TO CHASSIS WITH A VTVM NO SIGNAL AND 12 0 VOLTS AT ILLUS 29 OSCILLATOR GRID VOLTAGE TAKEN WITH SET TUNED TO lOOO KC. TOTAL A
2、 DRA N AT 12 V -2 2 AMPS. TOLERANCE ON VOLTAGES* I D% * - INDICATES LEAD FROM TUNER COIL ASS Y BEFORE MEASURING TRANSISTOR VOLTAGES, THE SHORTING TYPE SPEAKER SOCKET MUST BE OPENED AND A 4 OHM SPEAKER CONNECTED (F TRANS STOR S REPLACED, ADJUST BIAS POTENTIOMETER (ILLUS 73) TO OBTAIN PROPER COLLECTOR
3、 VOLTAGE WITH 12 VOLTS INPUT TO RADIO + ILLUS 60 IS A FUSE RESISTOR FOR THE TRANSISTOR GENERAL MOUNTING- -All 1959 Chevrolet Cars. TUNINGManual and 5 P. B. Mechani cal. ANTENNA TRIMMER COMPENSA TIONfor Antennas Between 0.000050 - .000100 Mfd. TUNING RANGE540-1600 KC. PUSH BUTTON SETUP PROCEDURE Pull
4、 Push Button out. Tune in desired station manually. Push button all the way in. ONOFF TONE VOLUME CONTROL CONTROL CHEVROLET 987891 PRINTED CIRCUIT SHOWN IN HEAVY LINES. TO DIMMER CONTROL TERMINAL ON FUSE BLOCK TO A SUPPLY ON fuse block Output transformer wili appear SHORTED F SHORTING TYPE SPEAKER S
5、WITCH IS NOT HELD OPEN 24 收音机爱 好者资料库 RadioFans.CN EDED 1959 RADIO SERVICING INFORMATION CHEVROLET MODEL 987891 (Continued from preceding page) rzj JT c3 * w *7* G . T3 m * C3 OS C 4 rS g rt U3 , 1 i cS , c5 o o ; . c j C S be 1 C OH C I - . 2 - 031 m a) P o5 S P 03 O ( . c*J cm OX (T, i O r* a 6 O .
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