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MCU1
/Control panel
signal
table
Pin
Nn
rill
J.NU.
^icrnsil
rnrlp
JL'CaL'IipilUIl
1
1
L
RFT?
Dl
1
0.
J
RTT1
Decoding
output of
the
membrane
switches
and
slide
switch
4
RTTO
o
rUl
llgllllllg II1C
UdLd
LldilMtl ICdLiy
LulZLJ
7
/
For
lighting
the
print inhibit
LED
8
5V
9
SEL1
Signal
lines
for selecting
BIT2
to
BITO
10
SEL2
Power
:
When
the
power
switch
is
turned
on, the green
LED
lights.
Ready
:
Lights
up
when
the printer
is
ready
to transfer data,
and
blinks
when
data
are
left
in
the buffer
memory
in
the
pause
mode.
Check
:
The
red
LED
lights
or blinks
when
an
error occurs.
Lights
when
the
ribbon
or
form
has
run
out.
Blinks
when
an
SP
or
SL home
position detection error occurs.
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64
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