Fisher SA 100 Service Manual

Page 1

SET490

FISHER
MODEL SA-IOO

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PHOTOFACT® Folder

FISHER

MODEL SA-IOO

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TRADE NAME Fisher Model SA-lOO (Serial 000149999

MANUFACTURER Fisher Radio Corp. , 21-21 44th Drive, Long Island City 1, N. Y.

TYPE SET AC Operated 7 Tube Stereo Ampliiler

POWER SUPPLY 105-120 Volts AC, 50-60 Cycles RATING 155 Watts, 1. 5 Amp Q 11'] Volts AC

(Measured with - ilV output tube grid bias)

ADJUSTMENTS

BIAS ADJUSTMENT

Connect speakers (or equivalent load resistors) to speaker terminals strip for each
channel.

Remove the link trom test point terminals on the lront panel. Connect the DC probe

at VTVM to channel "A" test terminal. Turn the channel "A" Bias Adjustmem located
on top of chassis (or a meter reading at . 0 volts. Repeat the procedure {or channel "B".
Reconnect links to test terminal strip.

m BALANCE ADJUSTMENT

Connect the AC probe of n sensitive VTVM across the 16 ohm terminals 01 the Channel
"A" speaker terminal strip. AdJust the Channel A" DC Balance control [or MINIMUM
deflection oi the Vi'VM. This reading should he .4 volts or less. Repeat this procedure
for Channel "B".

AC BALANCE ADJUSTMENT

This adjustment should be performed using an intermomiation or Harmonic Distortion
Analyzer. In this case, use normal adjustment procedure. if these instruments are
not available, a close approximntion may be made by setting the controls at center of
r otation.

HOWARD w. SAMS & 60.. INC. Indianapolis 6.Indlana

The listing 01 any available replacement part herein does the particular type 01 replacement part listed. Repro»
not constitute in any case a recommendation, warranty or duction or use, without express permission, of editorial or
gunrantyby Howard W. Sams in Co. , inc. , as to the quality pictorial content, in any manner, is prohibited. No patent
and suitability at such replacement part. The numbers of liability is assumed with respect to the use at the interma-
these parts have been compiled irom inlormation iurnished tion contained herein. © lsBO Howard W. Suns 8: Co. , inc. ,
Egggward W. Sums Gt Co. Inc , by the manutacturers at Indianapolis 6, Indiana. Printed in 11.3. of America

DATE 6 - BI]

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