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Epson FX Series Product Support

Epson FX Series
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PRINCIPLES
OF
OPERATION
Filter
Circuit
The
filter circuit is
situated
on
the
FFIL
circuit
board
together
with
the
printer
power
switch
and
fuse.
The
power
cable
is also,
connected
to
the
iPilter
board.
The
AC
input
from
the
power
line first flows across
the
power
switch
and
fuse F1. After being filtered
out
by C1, it issupplied
to
the
primary
side
of
the
power
transformer
via
the
LC
noise
prevention
circuit.
Power
line
noise
(external
noise)
into
the
printer
and
noise
(internal
noise)
occurring from
the
printer
are
eliminated by this noise prevention
circuit.
Capacitors
C2
and
C3
are
not
used
for
the
120\/
version.
sw
Fl
L
O-
.
d\j>
SOOajH
C2 ^ i.700P
C1
dp O lpF
CN1
C3
iz
4700P
N
O-
>N>.
-O
Fig. 1-9.
Fuse
and
FilterCircuit
1-6
EPSON
PRINTERS
Power
Transformer
In
the
Printer,
the
power
transformer
changes
the
AC
input
into
AC 26V
and
12VAC
through
the
filter
circuit
and
supplies
necessary
voltages
to
the
control
circuit
and
option
interface
circuit.
PRIMARV
PRIMARY
flCitC.
o-
AClZOv
o-
Bl
ACK
SECONOARy
orange
SECONDARY
o
50/60HZ
Ov
o-
TF
Pgray"
I
flfay
wange
orange
AC9.1V
AC27
7V
o-
50/60H2
Ov
O-
BROWN
white
iQfay
Ofange
orange
120V
Version
220/240V
Version
Fig. 1-10.
Power
Transformer
Windings
AC9.0V
AC29.8V

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Epson FX Series Specifications

General IconGeneral
BrandEpson
ModelFX Series
CategoryPrinter
LanguageEnglish

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