United-Motors-Service-Delco-983091 电路原理图.pdf

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1、收音机爱 好者资料库 RadioFans.CN d . ed g w 32 S gT Ofcr ! pa I w c/3 hS m *2 . !Swl P s c H c/3 I .2 2; H j cS w JgS o 2; o fe npi n w III 75 I 31 A/7, 4.S y 1 j Ho H t$3B PARTS LAYOUTCHASSIS VIEW QJ (gf 1ECTIFIER/ VI/ PARTS LAYOUTTUBE VIEW PARTS LAYOUTCHASSIS VIEW SIGNAL SEEKING TUNER ALIGNMENT PROCEDURE:

2、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,) Genera

3、tor Return _Receiver Chassis Dummy Antenna-In Series With Generator Volume Control-Maximum Volume Sensitivity Control -Position 2. (Position 1 is Maximum) Tone Control-Treble (max. clockwise) Generator Output-Not to Exceed 2 Volts at VTVM Dummy Antenna Connect To Signal Generator Frequency Tune Rece

4、iver To Adjust in Sequence 0.1 mfd. 0.1 mfd. 0.000068 mfd. 0.000068 mfd. 0.000068 mfd. 0.000068 mfd. 12BE6 Grid (Pin 7) 12BE6 Grid (Pin 7) Antenna Connector Antenna Connector Antenna Connector Antenna Connector 262 KC 262 KC 1615 KC 600 KC 1615 KC 1000 KC High Frequency Stop High Frequency Stop High

5、 Frequency Stop Signal Generator Signal Signal Generator Signal Signal Generator Signal A, B, C (Max.) D (Min.) *E, F, G (Max.) J, K (Max.) F, G (Max.) *L To tune to high frequency, put a 0.070” feeler gauge (or bare #13 wire) in slot against the high frequency stop. (See tuner pictures). Turn manua

6、l control to allow the planetary arm to run against the feeler gauge. (See tuner pictures). Turn manual control to allow the planetary arm to run against the feeler gauge. Before making this adjustment, check the setting of oscillator core “H.” The rear of the core should be lii from the mounting en

7、d 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 pressur

8、e 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. 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. f With the radio installed and the antenna plugged in, adjust the antenna trimmer “C” for maximum volume with the 0 radio tuned to a weak station between 600 and 1000 KC (see sticker on case). 收音机爱 好者资料库 RadioFans.CN