Galvin-Mfg-Co（Motorola）-919 电路原理图.pdf

《Galvin-Mfg-Co（Motorola）-919 电路原理图.pdf》由会员分享，可在线阅读，更多相关《Galvin-Mfg-Co（Motorola）-919 电路原理图.pdf（2页珍藏版）》请在收音机爱好者资料库上搜索。

1、75 收音机爱 好者资料库 RadioFans.CN VOLUME R-17, MOST-OFTEN-NEEDED 1957 RADIO SERVICING INFORMATION MOTOROLA MoPar 918 and MoPar 919 ALIGNMENT Continued Connect a VTVM across the AVC line and ground (see ALIGNMENT T nfATinwQ c . , . , to maintain generator FREQUENCY GENERATOR CONNECTION TUNER SET TO ADJUST I

2、F ALIGNMENT L I 12AD6 grid (p: I thru . 1 mf cap I tor and chassi Adjust for maximum, Adjust for minimum Adjust signal generator as required to obtain a well-defined minimum. RF ALIGNMENT 3. I Ant recept thru dum I y Adjust for maximum, 7 and 8 unless tuner has been tampered with ews. Before proceed

3、ing with step 4, back tu leir effect on trimmer adjustments. I Hi end stop I 5, 6 & 7 Adjuat for maximum, 49/64 from hi end stop Adjust for maximum, | Adjust for maximum. Step 6 should be last step. Adjust trap for minimum output of image frequency (1525 Kc) when tuned to 1000 Kc. Repeat steps 5 and 6 until no further inc mv ANTENNA TRIMMER Weak station around 1400 Kc R ! 9 1 iipp 1 HlfiRh OB 76 MODEL 918 ALIGNMENT ADJUSTMENTS 收音机爱 好者资料库 RadioFans.CN