EPSON
PRINTERS
ELECTRICAL
CIRCUITRY
Power
Circuit
The AC
input
power
is
supplied
to
the
power
transformer
through
the
filter
circuit.
The
outputs
from
the
secondary
side
of
the
power
transformer
are
input
to
the
circuit
board
and
converted
into
DC
voltages
via
the
regulator
circuit.
These
DC
voltages
are
supplied
to
their
respective
corresponding
electronic
circuits.
FX-80+/100+
Filter
Circutt
Power
Trans
former
AC
r
♦5V
O-
+24V
O-
VX08
(option)
Rogulator
Circuit
n
F)^^ircuU_Bo^
_j
Fig. 1-8. BlockDiagram of
Power
Circuit
FX-8S/185/105
fXEXT
-O
+5V
-O
+24V
(Vp)
-O
+12V
-O
-cBV
-O
VKp
-o
Vkc
AC12V
1-5
Voltago
+24V
(VPI
♦5V
(Vcc)
♦
lav
_AC12V
Vkc
(♦6V)
Vx
P|t5V|
PRINCIPLES
OF
OPERATION
TABLE
1-2.
Types
and
Applications of
Power
Application
CD
CorriBO
motor driva
(|)
Paper feed motor driva
(D Print solenoid drive
(i) li>iertaceoption circuit board power
t'T)
FXMB
logiccircuitdrive
(X)
Carnagemotor tiolding
CD
Paper feed motor holding
® Indicator lamp drive
Cjij
Interface option circuit board power
Cf)
FXEXT
logiccircuitdnve
(I; Interface option circuit board
power
(D Interface option circuit board power
CD
Power
reaei
(I) Buzzerpower
(D Print solenoid protection
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