United-Motors-Service-Delco-981708 电路原理图.pdf

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1、VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION 154 收音机爱 好者资料库 RadioFans.CN VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION SIGNAL SEEKING TUNER ALIGNMENT Output Meter Connection VTVM from AVC Line to chassis Generator Return - Receiver Chassis Dummy Antenna In Series

2、 With Generator Volume Control Maximum Volume Tone Control- - Treble Generator Output Not to exceed 2 volts at VTVM Step Dummy Antenna Connect Signal Generator To Signal Generator Frequency Tune Receiver To Adjust in Sequence For Output Indicated 1 0.1 Mfd. 12BE6 Cnd (Pin 8) 262 KC High Frequency St

3、op A, B, C (Max.) 2 0.1 Mfd. 12BE6 Grid (Pin 7) 262 KC High Frequency Stop D (Min.) 3 .000082 Mfd. Antenna Connector 1615 KC High Frequency Stop *E, F, G (Max.) 4 .000082 Mfd. Antenna Connector 600 KC Signal Generator Signal J, K (Max.) 5 .000082 Mfd. Antenna Connector 1615 KC Signal Generator Signa

4、l F, G (Max.) 6 .000082 Mfd Antenna Connector 1000 KC Signal Generator Signal *L To tune to high frequency, put a 0.070 feeler gauge (or bare #13 wire) in slot against the high frequency stop. De press station selector Dar and allow the planetary arm to run against the feeler gauge. Turn the radio o

5、ff and then back on. Before making this adjustment, cheek the setting of oscillator core “II.” The rear of the core should be 1! from the counting end of the coil form. This measurement is readily made by inserting a suitable plug in the mounting end of the coil form. The core adjustment is made fro

6、m the mounting end of the coil form with an insulated screwdriver. (It will be necessary to steady the core guide bar while making these adjustments. This can be done by . pplying a downward pressure on the guide bar at the antenna coil end) If this adjustment is necessary, first dissolve the glypta

7、l seal on the core stud and be sure to re-seal after making the adjustment. *“L” is the pointer adjustment screw on the end of the core guide baradjust so pointer reads 1000 KC. With the radio installed and the antenna lugged in, adjust the fntenna trimmer “G for maximum volume with the radio tuned to a weak station between 600 and 1000 KC (see sticker on case.) 155 收音机爱 好者资料库 RadioFans.CN