Emerson-Radio-and-Phonograph-Corp-G-1708 电路原理图.pdf

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1、VOLUME R-24. MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION EMERSON RADIO Model G-1708, Continued on the next page at right v-ia 12AT7 or12DT8 1STAM I F AF ex DIODE -A.-1 - I- -HI-J y-2 1000 u 1000 Hl 400 nn/cDTrc _ AM CONVERTER I2BE6 ,_ULTRACAP II + IOOV* -0.35V 7 / -TV* J NOTES: All measuremen

2、ts taken between points indicated and chassis ground, unless otherwise specified. * Indicates measurements taken with common lead of VTVM connected to B+ 126V line (junctibn of silicon rectifier and 80 mfd. electrolytic capa citor). K denotes kilohms; M denotes megohmes; N.C. denotes no connection t

3、o terminal indicated. &0P) *c. EKTOP) AM k FM i3(80T) 10.7 Mt. N*I3(B0T) ant. ViANT. AC INTERLOCK 12BA6 2N0 IF 2NO I F gyeoT) io,7 Mi. 12BA6 1ST I F 0 & ESctop) VO |O0T)/ / /0.7 me. 50C5 (v-5j I0.7MC OUTPUT V J RATIO 12AV6 OETECTOR a_gLn_ I 120TB it V“l )l FM RF y V . AMP B OSC 1 .sWEKtoo ioH3BOTi a

4、m v osc.coil) 1ST IF ft 128E6 r AM CONVERT. (000MMF B + TEST POINT R-F AMP /4 /re. AM OSC TRIMMER 1*00 re. It-sI AM R-F TRIMMER ii.iillllMHIlilll II II i I U11 HI I III IIH -a sw-i ON-OFF-SW, VOLUME CONTROL SW-2 AM-FM SWITCH TUBE LOCATIONS ANO ALIGNMENT POINTS 32 收音机爱 好者资料库 RadioFans.CN VOLUME R-24,

5、 MOST-OFTEN-NEEDED 1964 RADIO SERVICING INFORMATION EMERSON RADIO Model G-1708, Continued from the preceding page at left. V-3 V4 I2BA6 2NDIF I2BA6 IstI F v AM-FM 2ndI F. -14 83V I l t-I-035V I T 5 I TiI / 5 4700 | I_, 1(*- 83V RATIO DET 1500 + 2MF , 470110% t/4 w * f u-1 /c 4QKv 1/4 W ,OK 470+10% 1

6、0K 1/4W IN6Q / IN60 DIODES ARE r A MATCHED PAIR. . 1 SW-2 SELECTOR SWITCH IN FM POSITION v-5 v-e 12AV6 50C5 1STAUDI0,v4 AUDIO OUTPUT 7jj20V_ _ 01 4.7 M 2 V T-hi- 160 Si 10% FUSIBLES 33 ooJ5 Tube Type SW-2 Position 12DT8 FM 12BE6 AM 12BA6 AM or FM 12BA6 FM 12AV6 AM or FM 50C5 AM or FM 收音机爱 好者资料库 RadioFans.CN