Philco-Radio-and-Television-Corp-T-67 电路原理图.pdf

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1、01 CONVERTER 2SA273 /green VOLUME R-24, MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION TRANSISTOR PORTABLE MODEL T-67 PH ALL V0LTA0CS TAMM WITH MC*I0N VTVM MODEL ATTINV VOiTMC *V *V VOLUME CONTROL *T AT MINIMUM NO SIONAL UNOCH SAME CONO THDNS gATTERT CkMRENT |4 Foil Side of Perma-Circuit Panel P

2、ANEL REMOVAL - To remove panel from cabinet, lift out jack assembly and remove screw in panel located at D5 (see graph). Panel may now be lifted out; speaker will remain in cabinet. ALIGNMENT: Allow the test equipment at least 15 minutes to warm up before starting the alignment procedure. Connect an

3、 a-c VTVM or oscilloscope across the speaker voice coil. Use an AM R-F signal generator connected as indicated in chart. Keep generator output low enough to prevent A.G.C. overload. ALIGNMENT CHART SIGNAL GENERATOR RADIO STEP CONNECTION TO RADIO DIAL SETTING DIAL SETTING SPECIAL INSTRUCTIONS ADJUST

4、Use radiating loop (see note 1 below) 455KC 1600KC gang ful ly open Adjust for maximum output in order given T3-3rd I-F T2-2nd I-F Tl-ltt I-F 2 Same as Step 1 540KC 54CKC Adjust for maximum output. Adjust LI by sliding coil on core and waxing into position of maximum out put. Rock tuning gang white

5、adjusting L2. L2-osc. Ll-ant. coil Same as Step 1 1600KC 1600KC Adjust for maximum output. CIA- ant. trimmer Same as Step 1 1400KC 1400KC Adjust for maximum output. CIB-osc. tr inner 5 Repeat last three steps. NOTE 1: Use a 6 to 8 turn, 6-inch diameter loop made up of insulated wire. Connect to genera tor terminals and loose couple to radio antenna. 105 收音机爱 好者资料库 RadioFans.CN