Fisher-PresidentV-mc-sm维修电路原理图.pdf

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27、ground. Allinput selecior purhbullons out. and level sel adiuslmenls al minimum. Volume conlrol al minimum.Bass, freble, and channel balance confrols at mid-posilion. Loudness contour conlrol off Rumblefiltei at 20 cycles. Equalizalion selector at RIAA l. Oulpul seleclor al STANDARD.Voltoge Referenc

28、e ChortScf line voltoge ot l17 volts AC,50-60 cycles. All reodings sre in DC volls wilhrerpecf to chcrsir ground. Allow l5-minule inslrumenl worm-uP bcforc lokingmco luremcnlS.Resistonce Reference ChortDisconnccl the choilir AC power cord. Dischorge oll electrolytic copocilors locho$i: ground fhroug

29、h o IOO-ohm rerisfor. Disconnecl oll coble: lo orrociotcdequipment. Reodings ore in ohmr wilh raspecl lo chorsis ground+Iifs$rlliII;tl;c:SYMBOLTUBESTUEE SOCKET TERMINAT NUMBERSI23456789avl850P12.6o90No6.3v2r70o1.312.6ot55Nt56.3v3265r55t5525.2t2.5125ot.3t8.9v485oP12.6090 xo6.3v5r70o1.325.212.6t556.3t

30、5It.9v6125ot.325.212.6265t55155t8.9v7300 acx3656.3 ACox300 acxxSUPPLYCAPACITORSTERMINALSYMEOL5VOLTAGECHART NOTESAC Reading in AC voltiN Less than 1 volt DC, ng.tiveP Less th.n I volt DC, potitivoX No cgnnctiona Dual-tilamont iun1777AW 1644CH. ACH. BPOWER AMPI.IFIERCONNECREMOTECONTROLCABLEH EREPOWER

31、AMPLIfIERTO CHANNEL BSPEAKERSNOTE:TAPE RECORDER JAC.RADIOlAND2 ANDLINE OUTPUT AND 2ARE CONNECTED TOFIStsER COMPONENTS VACABLES AI REAR OF UNITt?RECORD CHANGER7025ECC83/12AX77025ecc83/r2lx7Ti5ECCSIl2AI7ECCSr12.17MAIN OUTPUTVOLTAGE AMP.TONE CONTROLRECORDER OUTPUTVOLTAGE AMP.TONE CONTROLMAIN OUTPUTCH.

32、BCH. BTAPE MONITORS I OUTPUTS INPUTS 78lLpA B I AUX 2 AUX TUNER MIC TAPE RIAA 2 RIAA IlcoM4816COM4S16 INPUTzi) fftlTln r.) /n ) rrfv/ , M Y/ y Y_/oMAIN RCRDRrA ra)MONAURAI OUTAPE RECORDER-9oo3+es7.J F(,t L c=f 2-6 osi ;! :F1 3P HPF ?U 3=Ep !i :Er 55 ;4= 5; nrsizzE5l jiP *.3zl JUatrEntI|r)FntsNNNo()o

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35、EIsJ (JU5tA ?.eoo E :-aF E EFg(, s ;11-e. = -o-o-?a6;rl;r j,:tj,l :-jJ.i.-.1j.:LS2tIISynbol DescripfionCl, C2 Copociior, 2uf, SOYtl, t2 Coil, Crossover,3MHtSl Speoker, Woofer, I 5-lnchtS2 Speoker, Mid-Ronge,8-lnchtS3, tS4 Speokers, TweeterPorl No.c547-t I 8L547-120L5775-t05L5547-123ts769-t 04RCORPORATIONNEW YORKFISHER RADIOJ!rolE N776-r 12-Prirrtcd irr U.5.A654W250-30-