Fisher FM 100 Service Manual

Page 1

SET 477

PHOTO FACT® Folder

FISHER
MODEL FM-IOO

FISHER
MODEL FM-lOO

TRADE NAME

Fisher Model FM-lOO (Serial MOON-19999 Inclusive)

MANUFACTURER Fisher Radio Corp. , 21-2144th Drive, , Long Island City 1, N. 1.

TYPE SET AC Operated 10 Tube FM Tuner

POWER SUPPLY 105-120 Volts AC, 60 Cycles

TUNING RANGE - FREQi MOD. 88-108 RATING

43 Watts, .4 Amp. @117 Volts AC

DIAL CORD STRINGING

TUNING GANG FULLY CLOSED

Q\

TUNING SHAFT

HOWARD w. SIMS Q 00.. INC. lndlanapolls 6.Indlana

The listing of any available replacement part herein does
not constitute in any case a recommendation, warranty or
guarantyby Howard W. Sams 5: Co. , Inc. , as to the quality
and suitability of such replacement part, The numbers of
these parts have been compiled lrom informatinn furnished
Eeigzward Wr Sams & Co., Inc., by the manulacturers of

the particular (ype 01 replacement part listed. Repro-
duction or use, without express permission, of editorial or
pictorial content, in any manner, is prohibited. No patent
liability is assumed with respect to the use oi the informa»
tion contained herein. © 1960 Howard W. Sams in Co. , Inc. ,
Indianapolis 6, Indium, Printed Ln US. of America

DATE 3- 6|] SET 477

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FULDER

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Page 2

ALIGNMENT INSTRUCTIONS

ALIGNMENT INSTRUCTIONS~READ CAREFULLY BEFORE ATTEMPTING ALIGNMENT

Volume control should be at maximum position. Output of signal generator should be no higher than necessary to obtain an
output reading.

Remove external antenna and link between terminals 1 and 2.
To set pointer, turn tuning capacitor fully closed and set pointer to last reference mark at low frequency end of dial.

Suggested alignment tools: A1 thru A9, A13, A14, A15 ........ GENERAL CEMENT #8606, 8606L, 8282, 9295
WALsco #2526, 2543, 2544, 2545
A10, A11, A12 ................... GENERAL CEMENT #5000, 5003,5014, 5015, 5016,8276, 3290

WALSCO #2512, 2515 2522, 2523. 2525, 2537

IF ALIGNMENT USING AM SIGNAL GENERATOR AND VTVM

AL DIO
Geiigmlon GENERATOR RGIAL CONNECT ADJUST REMARKS
COUPLING FREQUENCY SETTING VIVM
High side to un- 10. 7M0 Point of non- DC pro e to A1, A2, Adjust for maximum deflection.
grounded tube shield (Unmod.) interference. point . A3, A4,
floating over Mixer- Common to A5, A6,
Osc. (V2). Low side chassis. A7
to chassis.

" " " DC pr e to A8 "
point 3 .

Common to

chassis.

" " " DC pr e to A9 Adjust for zero reading. A positive and
point 8C3 . negative reading will be obtained on either
Common to side of the correct setting.
chassis.

1F ALIGNMENT USING FM SIGNAL GENERATOR AND OSCILLOSCOPE

Use frequency modulated signal with 60m modulation and 450KC sweep. Use 12011 sawtooth voltage in scope for horizontal
deflection.

SIGNAL SIGNAL RADIO CONNECT
GENERATOR GENERATOR DIAL ADJUST REMARKS
COUPLING FREQUENCY SETTING SCOPE
High side to un- 10. 7MC Point of non- Vert. am , Al, A2, Adjust ior maximum gain and symmetry
grounded tube shield (450KC Swp) interference to point é . A3, A4, of response similar to Fig. l.
floating over Mixer- Low side 0 A5, A6,
Osc. (V2). Low side chassis. A7
to chassis.
" " " Vert. am , A8 Disconnect stabilizing capacitor C4.
to point é . Adjust [or maximum gain and symmetry
Low side 0 of response similar to Fig. l. Reconnect C4.
chassis.
" " " Vert. am . A9 Adjust to place marker at the center of
to point . crossover lines similar to Fig. 2.
Low side to SLIGHTLY retouch A8 for maximum amp-
chassis. litude and straightness of crossover lines.
RF ALIGNMENT
SIGNAL SIGNAL RADIO CONNECT
GENERATOR GENERATOR DIAL VTVM ADJUST REMARKS
COUPLING FREQUENCY SETTING
Across antenna IOGMC 106MC DC probe to A10,All, Adjust for maximum deflection.
terminals 2 and 3 (Unmod.) point . A12
with 1200 in each Common to
lead. chassis.
" SOMC SOMC " A13, A14,
, A15

FIG. I FIG. 2