Zenith-Radio-Corp-T404V 电路原理图.pdf

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1、VOLUME R-16, MOST-OFTEN-NEEDED 1956 RADIO SERVICING INFORMATION MODEL T404F, L, P, V & W CHASSIS 4T40 MODEL T405F, L, P, V & W CHASSIS 4T41 . I -33 X 23 X r Tv/m r6 uv CG/- 600 kc to 455kc“ _ 33 X _ 455 KC TO 400 IR5 CONVERTER IU5 DET.AMR 3V4 PWR AMR -0-., 4.7 MEG I NECS 22-J ,L2 15 WATTS II7V. AC.-

2、DC SE-I |Ml09Vv.95v nn 16OWW 66010% CIU .iTsowfo. NOTES ALL V0UA6ES MEASURED FROM COMMON RETURN TO POINTS INDICATED WITH AC.OC OR VACUUM TUBE VOLTMETER AU. VOLTAGES ARE DC UNLESS OTHERWISE SPECiFlEO. ALL CONDENSERS MICROFARADS UNLESS OTHERWISE SPECIFIED. ALL CONDENSERS ANO RESISTORS 20% UNLESS OTHER

3、WISE SPECiFlEO USE ONLY ZENITH NON-INDUCTIVE ELECTROLYTIC CONDENSERS FOR REPLACEMENT. I F. FREQUENCY 455KC TUNING RANGE 450KC 1600 KC i s-i jr=3 0. TUNING-, CONTROlA -CIC OSC TRIMMER rGIA ANT TRIMMER T2 2ND UTRANSr L5 PRI. BOTTOM / L6 SEC. TOP DENOTES CHASSIS I DENOTES COMMON RETURN 8- /7777 BATTERY

4、 PACK NO Z775 Tl 1ST. I F. TRANS/ L3 PRI. BOTTOM L4 SEC. TOP- 8+ Blue j * A+ BED ! BATTERY CABLES SOCKET ISPEAKER Alignment Procedure rON-OFF SWITCH S VOLUME CONTROL VA.C.CORDa REEL ASSEMBLY (ON MODELT405 ONLY) 470 % lone LJ200MFDi I 10V AVC BUS FILAMENT SUPPLY FILAMENT ANO A.V.C. CIRCUIT CONNECT DUMMY INPUT SIG. SET OSC. TO ANTENNA FREQUENCY DIAL AT TRIMMERS PURPOSE Convertor L3,4,5,6 For I.F. Grid .5 Mfd, 455 Kc. 600 Kc. Alignment Single Turn Loosely Coupled to 1600 Kc. 1600 Kc. CIC Set OsCt to Diol Scole 1400 Kc. 1400 Kc. CIA Antenna Wave- Magnet Alignment 177 收音机爱 好者资料库 RadioFans.CN