Cadillac-Div-General-Motors-7264165 电路原理图.pdf

收音机爱 好者资料库 RadioFans.CN MANUAL OF 19S4 MOST-OFTEN-NEEDED RADIO DIAGRAMS SIGNAL SEEKING TUNER ALIGNMENT PROCEDURE: NOTE: When aligning the signal seeker tuner type radio, be sure to use a vacuum tube voltmeter as indicated and be sure to follow the alignment sequence given(Notice that the primary of the 2nd I.F. is aligned first.) Output Meter Connection - _ VTVM From AVC Line To Chassis (see parts layout) Generator Return - Receiver Chassis Dummy Antenna- -. _ In Series With Generator Volume Control- Maximum Volume Sensitivity Control _Maximum Sensitivity Tone Control. Treble Generator Output-Not To Exceed 2 Volts at VTVM Step Dummy Antenna Connect To Signal Generator Frequency Tune Receiver To Adjust in Sequence for Output Indicated 1 0.1 mfd 12BE6 Grid (Pin 7) 262 KC A, B, C (Max.) 2 0.1 mfd 12BE6 Grid (Pin 7) 262 KC D (Min.) 3 0.000068 mfd Antenna Connector 1615 KC High Frequency Stop *E, F, G (Max.) 4 0.000068 mfd Antenna Connector 600 KC Signal Gen. Signal J, K (Max.) 5 0.000068 mfd Antenna Connector 1615 KC Signal Cen. Signal F, G (Max.) 6 0.000068 mfd Antenna Connector 1000 KC *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 bar and allow the planetary arm to run against the feeler gauge. Turn the radio off and then on. Before making this adjustment, check the setting of oscillator core “H. The rear of the core should be 1 Sfi 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. The core adjustment is made from the mounting end of the coil form with an insulated screw driver. (It will be necessary to steady the core guide bar by applying a downward pressure at the antenna core end of the bar while making these adjustments.) If this adjustment is necessary, first dissolve the glyptal seal on the core stud and be sure to re-seal after making the adjustment. X” is the pointer adjustment screw on the end of the core guide baradjust so pointer reads 1000 KC. 1 CS With the radio installed and the antenna plugged in, adjust antenna trimmer “G” (See sticker on case) for maximum | P P volume with the radio tuned to a weak station between 600 and 1000 KC. 收音机爱 好者资料库 RadioFans.CN