Eico HF 52 Service Manual
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Page 1
EICO
MODEL HF-52
PHOTOFACT® Folder
EICO
MODEL HF-52
TRADE NAME Elco Model HF-Sz
TYPE SET AC Operated 7 Tube Audio Amfllflar
POWER SUPPLY 0-120 Volts AC, 80 Cycles
MANUFACTURER Electronlc Instrument Co. , Inc. , 38-00 Northern Blvd. , Long Leland City 1, N. Y.
RATING 150 Watts, L45 Amp. 3 117 Volts AC
ADJUSTMENTS
BIAS ADJUSTMENT
Connect DC probe of VTVM ta polnt A
(or 47 volts 0n VTVM
BALANCE ADJUSTMENT
FINAL BIAS ADJUSTMENT
Blas (R6) for . 65 volts.
Connect VTVM across meter jacks on rear apron. Use lowest DC scale. Adjust
Balance (115) for zero at MINIMUM defleetlon.
Connect DC probe of VTVM to either meter jack. Common to chassis. Adjust
Common to Chassisl Adjust mas (as)
HOWARD w. SAMS & 00.. INC. Indlanapolls 6.Indlana
The Home 0! any available replacement part hereln does
not constltute tn any case a recommendation, warranty or
guarantyby Howard W. same R: Co. , Inc. , as to the quallty
and sultablllty e! such replacement part. The numbers of
these parts have been compiled from lnlormlllon lurnlshed
to Bayard W. Same 5: Col, Inc, by the menulecturers oi
5x63
the partlcular type ol replacement part listed. Repro-
ductlon or use, wlthout express permleelon, oi editorlnl or
plctorlal content, In any manner, la prohlblted. No pntent
llahlllty is assumed wlth respect to the use at the merma-
tlon contained herein, © 1960 Howard W. Sums 1 Co. , Inc. ,
lndlnnapolls 5, lndima. Prlnted in .5. ol Amerlcn
BATE 5 - 60 SET483
ZS'iH EGOW
03E
9 lllfllfli 891138
FllLDEIl 6
Page 2
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