United-Motors-Service-Delco-989387 电路原理图.pdf

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1、VOLUME R-21, MOST-OFTEN-NEEDED 1961 RADIO SERVICING INFORMATION Net m -l L1J. 50 - OUTPUT TRANSFORMER WILL APPEAR SHORTED IF SHORTING TYPE SPEAKER SWITCH IS NOT HELD OPEN. 12 VOLT HEATERS DS-503 %, % |850 .000220 i Pi / 56 A-ILLUS. 22 IS USED WHEN ILLUS. 47 IS 150 OHMS. BUICK 980132PRINTED CIRCUIT S

2、HOWN IN HEAVY LINES 31 iiiaiiiM 收音机爱 好者资料库 RadioFans.CN NEEDED 1961 RADIO SERVICING INFORMATION 12026 TUBE VIEW I2AD6 R F, AMP OSC - MOD. DS 22 TOP VIEW I2DS7 t F AMP DET-AUD. 收音机爱 好者资料库 RadioFans.CN VOLUME R-21, 1961 RADIO CHEVROLET MODEL 988413 Alignment in Table 4, Page 38 Mm.egmii siiBji I20Z6 !

3、r? VINDICATES LEAD FROM TUNER COIL ASST. * A-1MS CAPACITOR WILL NOT APPEAR IN ALL T RADIOS. (USED WHEN ILLUS. 38 IS 150 OHMSI I VOLTAGES MEASURED TERMINAL TO CHASSIS L* WITH A VTVM-NO SIGNAL AND 12.0 VOLTS 5ZC AT ULUS. 22. OSCILLATOR GRID VOLTAGE TAKEN 1 WITH SET TUNED TO 1000 KC. _ TOTAL A“ DRAIN A

4、T 12V. -1A AMPS. gt P TOLERANCE ON VOLTAGES 10% *-KFORE MEASURING TRANSISTOR VOLTAGES. THE SHORTING TYPE SPEAKER SOCKET MUSTKOPENB3 AMD A 4. OHM, SPEAKER ,J UJWNH.IEIL. IF TRANSISTOR IS REPLACED, ADJUST BAS POTB4TIOMETER I ILLUS. 511 TO + I8V. TO OBTAIN PROPER COLLECTOR VOLTAGE a VQUS INPUT TO RADIO

5、. BL0CK 收音机爱 好者资料库 RadioFans.CN Voltages measured terminal to chassis with a VTVMNo signal and 12.0 volts at fllus. 34 Oscillator grid voltage taken I with set tuned to 1000 KC. g Total “A” drain at 12V. - 2.2 amps. k Tolerance on voltages 10% A *Indicates lead from tuner coil assy- “Before measurin

6、g transistor voltages, the shorting type speaker socket must be opened and a 4 ohm speaker connected, jjj if transistor is replaced, adjust bias poten tiometer (fllus. 73) to obtain proper col- 1 lector voltage with 12 volts input to radio. - (Illus. 60 is a fuse resistor for the tran sistor. Servic

7、e with exact replacement. 11 % CHEVROLET 088414 TO FUSE TO BLOCK HEATERS .33 - PRINTED CIRCUIT SHOWN IN HEAVY LINES. 34 VOLUME R-21, MOST-OFTEN SERVICING INFORMATION DELCO CHEVROLET CORVAIR 988468 Alignment in Table 1, Page 38 BOTTOM VIEW T I fcl U TUBE VIEW Dll liiiiiimll 3i oil ill m i Voltages me

8、asured terminal to chassis with a VTVMNo signal and 12.0 volts at Ulus. 27 1 Oscillator grid voltage taken I with set tuned to 1000 KC. :9 Total “A” drain at 12V. - 1.6 amps, f Tolerance on voltages 10% Indicates lead from tuner coil assy- fBefore measuring transistor voltages, the shorting type spe

9、aker socket must be opened and a 4 ohm speaker connected, if transistor is replaced, adjust bias poten tiometer (Ulus. 58) to obtain proper col- : lector voltage with 12 volts input to radio, fjUlus. 49 is a fuse resistor for the tran sistor. Service with exact replacement. CHEVROLET CORVAIR 988468

10、DS903 OUTPUT warn Tn TO FUSE BLOCK HEATERS .33- PRINTED CIRCUIT SHOWN IN HEAVY UNES. 35 VOLUME R-21, MOST-OFTEN-NEEDED 1961 RADIO SERVICING INFORMATION OLDSMOBILE MODEL 989392 Alignment in Table 2, Page 38 . L_ TUK VICWl H- TUBE VIEW I2DZ6 R.F. AMP. I2AD6 OSC-MOO s 48 e c 5C 3 1 17 ll c ann 57 gga b

11、e I 25 I I2EK6 I, F AMP. PARTS VIEW I2DS7 AUD.-DET ts; 7ZJ A. 58 p-WA- J 39 MEG EH -vw* 3.3 MEG. Jg VOLTAGES MEASURED TERMINAL TO CHASSIS WITH A VTVM-NO SIGNAL AND 12.0 VOLTS AT ILLUS. 32. OSCILLATOR GRID VOLTAGE TAKEN WITH SET TUNED TO 1000 KC. TOTAL A DRAIN AT 12V.-2.4 AMPS. TOLERANCE ON VOLTAGES

12、10V. COLLECTOR CURRENT tic) 1050 M.A. -INDICATES LEAD FROM TUNER COIL ASSY. -BEFORE MEASURING TRANSISTOR VOLTAGES, THE SHORTING TYPE SPEAKER SOCKET MUST 8E OPENED AND A 4 OHM SPEAKER CONNECTED. IF TRANSISTOR IS REPLACED. ADJUST 8IAS POTENTIOMETER IILLUS. 67) TO OBTAIN PROPER COLLECTOR VOLTAGE WITH 1

13、2 VOLTS INPUT TORADIO. +-ILLUS. 57 IS A FUSE RESISTOR FOR THETRANSISTOR. SERVICE WITH EXACTEPLACEMENT. A-WILL NOT APPEAR IN ALL RADIOS A A-.33 OHM MUST BE USED WHEN ILLUS. 34 IS NOT PRESENT. l L 48 3.9 MEG 820K 00000 m 1% |400 03) *6% MA TO LEAD HEATERS LIJ L iT2 m m, _.li_j isiooo OLDSMOBILE 989392

14、-PRINTED CIRCUIT SHOWN IN HEAVY LINES 36 VOLUME R-21, MOST-OFTEN-NEEDED 1961 RADIO SERVICING INFORMATION Voltages measured terminal to chassis with a VTVMNo signal and 12.0 volts at Illus. 30. Oscillator grid voltage taken with set tuned to 1000 KC. Total A” drain at 12V. - 2.2 amps. Transistor coll

15、ector current1 amp. Tolerance on voltages 10% *Indicates lead from tuner coil assy- *-Before measuring transistor voltages, the shorting-type speaker socket must be opened arid a 4 ohm speaker connected, if transistor is replaced, adjust hias potenti ometer (Illus. 73) to obtain proper collec tor vo

16、ltage with 12 volts input to radio. 1Ulus. 59 is a fuse resistor for the transistor. Service with exact replacement. PONTIAC 989693PRINTED CIRCUIT SHOWN IN HEAVY LINES. VOLUME R-21, MOST-OFTEN-NEEDED 1961 RADIO SERVICING INFORMATION DELCO Alignment Procedure for Various 1961 Auto Radios f Output Met

17、er Connections-Across Voice Coil Generator Return_-To Receiver Chassis Dummy Antenna _In Series With Generator Volume Control Position_Maximum Volume Generator Output_:_Minimum for Readable Indication TABLE 1, Alignment for Buick 980134, Chevrolet 988414, Chevrolet Corvair 988468 STEP SERIES CONDENS

18、ER OR | DUMMY ANTENNA CONNECT SIGNAL GENERATOR TO SIGNAL GENERATOR FREQUENCY TUNE RECEIVER TO ADJUST IN SEQUENCE FOR MAX OUTPUT l 0.1 Mfd. 12AD6 Grid (Pin #7) 262 KC High Frequency Stop A, B, D, C 2 .000082 Mfd. Antenna; Connector 1615 KC High Frequency Stop *E, F, G 3 .000082 Mfd. j Antenna Connect

19、or 600 KC Signal Generator Signal J, K 4 .000082 Mfd. -Antenna Connector 1615 KC High Frequency Stop F, G 5 .000082 Mfd. Antenna Connector 1100 KC Signal Generator Signal L TABLE 2, Alignment for Oldsmobile 989392 and Pontiac Model 989693 STEPS SERIES CAPACITOR OR DUMMY ANTENNA CONNECT SIGNAL GENERA

20、TOR TO SIGNAL GENERATOR FREQUENCY TUNE RECEIVER TO ADJUST IN SEQUENCE FOR MAX. OUTPUT l 0.1 Mfd. 12AD6 Grid (Pin #7) 262 KC High Frequency Stop A, B, C, D 2 0.000068 Mfd. Antenna Connector 1615 KC High Frequency Stop *E, F, G 3 0.000068 Mfd. Antenna Connector 600 KC Signal Generator Signal J, K 4 0.

21、000068 Mfd. Antenna Connector 1615 KC High Frequency Stop F, G 5 0.000068 Mfd. Antenna Connector 1100 KC Signal Generator Signal L* TABLE 3, Alignment for Buick 980132 and Oldsmobile Model 989387 STEPS SERIES CONDENSER OR DUMMY ANTENNA CONNECT SIGNAL GENERATOR TO SIGNAL GENERATOR FREQUENCY TUNE RECE

22、IVER TO ADJUST IN SEQUENCE FOR MAX. OUTPUT l 0.1 Mfd. 12AD6 Grid (Pin #7) 262 KC High Frequency Stop A, B, D, C 2 .000082 Mfd. Antenna Connector 1615 KC High Frequency Stop *E, F, G 3 .000082 Mfd. Antenna Connector 600 KC Signal Generator Signal J, K 4 .000082 Mfd. Antenna Connector 1615KC High Freq

23、uency Stop F, G 5 .000082 Mfd. Antenna Connector 900 KC Signal Generator Signal L* TABLE - 4, Alignment for Chevrolet Model 988413 STEPS SERIES CAPACITOR OR DUMMY ANTENNA CONNECT SIGNAL GENERATOR TO SIGNAL GENERATOR FREQUENCY TUNE RECEIVER TO ADJUST IN SEQUENCE FOR MAX. OUTPUT l 0.1 Mfd. 12AD6 Grid

24、(Pin #7) 262 KC High Frequency Stop A, B, C, D, 2 0.000082 Mfd. Antenna Connector 1615 KC High Frequency Stop *E, F, G, 3 0.000082 Mfd. Antenna Connector 600 KC Signal Generator Signal J, K 4 0.000082 Mfd. Antenna Connector 1615 KC High Frequency Stop F, G Before making this adjustment check mechani

25、cal setting of oscillator core “H.” The rear of the core should be 15A from the mounting end of the coil form. (This measurement is readily made by inserting a suitable plug in the mounting end of the coil form.) Core adjustment should be made with a non-metallic screw driver. I, is the pointer adju

26、stment screw which is on the connecting link, between the pointer assembly and the parallel guide bar. It should be adjusted so that the dial pointer corresponds with the 1100 K.C. mark on the dial. *L is the pointer adjustment screw which is on the connecting link, between the pointer assembly and

27、the parallel guide bar. It should be adjusted so that the dial pointer corresponds with the 900 KC mark on the dial. 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 600 and 1000 KC (see sticker on case.) 38