Zenith-Radio-Corp-6JT45Z1 电路原理图.pdf

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1、VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION CHASSIS 6JT45Z1 MODEL ROYAL 650 (Additional service material on the next page) 121-222 MATCHED OUTPUT EARPHONE JACK BATTERY CASE- Tl 1ST IF TRANSFORMER- T3 3RD I.F TRANSFORMER OSCILLATOR TRANSFORMER T2 2ND I. E TRANSFORMER DRIVER TRANSF

2、ORMER lJ - 0 0 0 0 Ot*iO 03.0 0 1 0 1 1 06 10 Q i 50 05 0 5 0 30 01 t 0 04 30 04 30 CHASSIS INFORMATION CHART Transistor Label Color Part No. Conv. 1 at. I.F. 2nd. I.F. Cryslal Diode Detector Driver Output-Output Supplier BUck 102-8292 Zenith E1A Type 121-206 PNP 121-219 PNP 121-220 PNP 103-19 1N87G

3、 121-221 PNP 121-222 Matched Pair PNP PNP Texas Instrument ALIGNMENT PROCEDURE Cl A ANTENNA TRIMMER ClC OSCILLATOR TRIMMER Operation Input Signal Frequency Connect Inner Conductor From Oscillator To Connect Outer Shield Conductor From Oscillator To Set Dial At Trimmers Purpose 1 455 KC ONE TURN LOOS

4、ELY COUPLED Chassis 600 KC Adj. Tl, T2, T3 for maxi mum output. Fori.F. Alignment 2 1620 KC - Gang wida open. ClC Set Oscillator to dial scale. 3 600 KC WAVEMAGNET Near 600 KC Adjust slug in T5 While rocking gang, adjust T5 for maximum output re gardless of dial accuracy. 4 1260 KC - 1260 KC CIA Align loop ant. 5 REPEAT STEPS 2, 3, & 4 - 182 收音机爱 好者资料库 RadioFans.CN VOLUME R-23, MOST-OFTEN-NEEDED 1963 RADIO SERVICING INFORMATION ZENITH Model Royal 650, Chassis 6JT45Z1, Continued S Tz JT Ou Uz T oo 183 收音机爱 好者资料库 RadioFans.CN