Stewart-Warner-Corp-9170-B 电路原理图.pdf

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1、MANUAL OF 19S4 MOST-OFTEN-NEEDED RADIO DIAGRAMS STEWART-WARNER MODELS 9170-B, 9170-C, & 9170-D SIGNAL GENERATOR CONNECTIONS SIGNAL GENERATOR FREQUENCY RECEIVER DIAL SETTING n TRIMMER DESCRIPTION TYPE OF ADJUSTMENT CONNECT HIGH SIDE OF SIGNAL GENERATOR TO CONNECT GROUND LEAD OF SIGNAL GENERATOR TO Lu

2、g on trimmer #6 al side of gang (see chart below for loco- tion of Irimmer). Any B terminal in chassis. 455 KC Any point where it does not affect the signal. 1 and 2 2nd I.F. Adjust for maximum output. Then repeat adjustment. 3 and 4 1st l.F. IMPORTANT: Before undertaking alignment of the oscillator

3、 and an- able to have batteries in proper place. To gain access te oscillator and tenna trimmers it is necessary to reassemble the chassis in the cabinet. ontenna trimmers, it will be necessary to open back of cabinet. In order The tuning knob should be installed on the gang condenser shaft so to pr

4、ovide a coupling for the signal generator, during this port of the that when the condenser is fully meshed, the dot under the smaller 5 procedure, wind several turns of wire in a circular shape te form a rodi- of the 55 on dial scale is directly opposite the pointer (gold mark on ating loop thot may

5、 be placed adjacent (axes parol lei) to the loop cobinet). As battery position slightly offects R.F. alignment, it is prefer- anlenna. Now complete the alignment procedure as follows. Connect directly to radiating loop. (See above for instructions on radiating loop.) Rotote and adjust loop for maxim

6、um Input. 1600 KC 1600 KC 5 Broadcast Oscillator Adjust fer maximum eutput. Same os obove. 1500 KC Tune te 1500 Kc. generator signal. 6 Broadcast Antenna Adjust for maximum output. AC-DC-BATT. SWITCH 521293 *Moy serve os a wiring point. VOLTAGE MEASUREMENTS AH voltages meosured to B using a 20,000 o

7、hm per volt meter with the receiver connected to o 117 volt 60 cycle power supply, except those marked with an asterisk (*). The asterisk indicates thot the voltage was measured with the receiver powered by its self contained batteries. Loop terminals shorted together. No voltage reading at a tube element indicates zero voltoge or voltoge which cannot be accurately measured with a 20,000 ohm per volt meter. T 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN