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IIMT
1
m
Catalog
Number 26-1151
CUSTOM
MANUFACTURED
IN
U.S.A.
FOR RADIO
SHACK
MA DIVISION
OF TANDY
CORPORATION
iSPW8WW'-$
¥
*i^?gBSW
INTRODUCTION
The TRS-80
Screen
Printer
consists
of a
rotary
printer,
built-in
power
supply
and
36"
(90
cm)
interconnect
cable.
It
also
contains a
power-ON/OFF
switch,
power-ON
indicator,
a fuse
and a
PRINT
command
switch.
The
upper
half
of the
case
may
be
raised
for
access
to
the
rotary
printer
for paper
replacement.
The
front
has
a
removable
panel for
access to
the
print head.
This
Screen
Printer
will
connect
to
any TRS-80
Computer
and
print out
whatever
information is
displayed
on the
Video
Display
screen.
SPECIFICATIONS:
Power
Input
120
VAC,
60
Hz
Power
Consumption
at
120 VAC
60
Watts
(Printing)
10
Watts
(Standby)
Printing
Rate
...
*
2,200
characters-per-second
Drive-unit
Lifetime
500,000
screen
printouts
Print-head
Lifetime
5,000
screen
printouts
CONNECTIONS
NOTE:
The
word
"UP"
is
printed on
the
cable
connectors
To
replace
the
roll of
paper,
perform
the
following steps:
to
provide
correct
orientation.
1
.
Raise the
upper
half
of
the
case.
Install
the
interconnect
cable
between
the
Screen
Printer
and
the
Computer
expansion
jack
(under
the
removable
2.
Release
the snap-down
paper-gu,de
cover (A) by
. pulling
outward
on cover
latch,
cover).
r
Connect
the
AC
power
cord to
any
standard
120
VAC
out-
3.
Insert
the
spindle in
slots
(B).
Paper
should roll
off
.
the spool
at the
bottom
toward
the
rear.
OPERATION
4
'
Route
the
PaP
er over the
to
P
spindle
(C),
with
the
coated
side
down.
NOTE:
To
avoid
malfunctions
in
computer
programs,
set
5,
Fold
the
paper to
form a
pointed
edge
(D).
the
power
ON/OFF
switch
to "ON"
whenever
the
Printer
is
connected
to
the
Computer.
6.
Insert
the
pointed
edge
through
the
writing
platen
and
pull the
paper
through
until
the
entire
folded
Apply
power to
the
Printer,
Computer
and
Video
Display
section
has passed
the
cutting
edge
on
the
platen
(E).
(in any
order).
Load a
program
into the
Computer
via tape
cassette
or
keyboard
and
display
whatever
you
want
to be
7.
Align
edge of
paper
with
paper
guide
(F).
printed
out.
Press
the
PRINT
command
switch on the
front
of
the
Printer.
The
Printer
immediately
prints
out
all of the
8.
Close the
snap-down
paper-guide
(G).
data
that
is
displayed
on
the
Video
screen.
9. Hold the end
of the
paper
and,
with
an
upward
motion,
PAPER
LOADING
(See
Figure
1)
press the
paper
firmly
against
the
cutting
edge.
Con-
tinue
the
motion to
tear the
paper
off.
A
stripe
on the
paper
indicates
the end
of the
roll
is
approaching
and that
the
roll
should
be
replaced.
You
can
10. Close
the top
half
of the
case.
buy
new
rolls of
paper
through
your
local Radio
Shack
store.
(A)
RELEASE
LATCH
AND LIFT
(Dl
FOLD
UNDER TO
MAKE
A
POINTED
EDGE
(CI
ROUTE PAPER
ABOVE
TOP SPINDLE
IBI
INSTALL
SPOOL
OF
PAPER
(G)
CLOSE
AND
SNAP
INTO
PLACE
(El
INSERT
PAPER
UNDER
WRITING
PLATEN
AND
PULL
THROUGH
(F)
ALIGN
EDGE OF
PAPER
WITH
PAPER
GUIDE
FIGURE
1.
PAPER
LOADING
HEAD
ADJUSTMENT
PROCEDURE
All
printers are
given an operational
test before leaving
the
factory. Only minor
adjustments should
be required and it
will
not be necessary to remove,
the print head
from its
housing to make any
preliminary centering
adjustments.
Before proceeding
with this procedure,
see Figure
2,
showing
the end view of
the print
head with the
adjusting screws.
m
FIGURE
2.
PRINT
HEAD (END
VIEW)
Apply power to
the printer.
Allow it to print out the
video display
with at least
one full line of
repeating
ABC
pattern, and
remove
power.
Now look at the
vertical
alignment of characters
in
each
line.
Observing
the
first
three
characters in
a
line,
determine
if one of the three
is out
of alignment with the
other two. Should
the
first
character
be
either higher
or
lower
than the second or
third,
refer to the adjustment screw
at stylus "A" that is marked
"DN-^-*-UP".
Turn this
screw
counterclockwise
1/4 turn
to remove tension
on the head. Now, by bringing
the
blade
of the screwdriver
to
bear
on the side of the screw
head, it
will be possible to move
the stylus assembly in the
desired
direction. Then tighten the
screw to hold
the
stylus
assembly
in place.
Apply
power
and recheck character
alignment. If further
adjustment is required,
repeat the
procedure. Should the
second character
be out of alignment
with the first
and
third,
go
through similar
adjustment
procedures at stylus
B.
Likewise,
to
bring
the third character
in alignment
with the
first and second, make
an adjustment
at
stylus
C. Refer to
Figure
3 for typical situations
and alignment
procedures.
When the required vertical
adjustments have been
made,
pay attention to the
spacing
between columns
A
and
B, B
andCand
C and
A.
The
spaces between columns should
be
nearly equal. If
not, equalize the spacing
by
making
adjust-
ments with R"
"*"L screws
associated with each stylus.
See
Figure
4
for
adjustments
to make in
typical situations.
3
CO
3
3
>
+»
CO
3
>
*•*
to
A
B C
A
A
A
B
C
—
A
B
C
C
A
A B
A
Normal alignment
Irregular
alignment (Move
stylus "A" down)
Irregular alignment
(Move
stylus "B"up)
Irregular
alignment
(Move
stylus
"C" down)
FIGURE 3. VERTICAL
CHARACTER
ALIGNMENT
00
o
3
3
3
3
>
£
&
>-
4-»
CO
CO
CO
CO
A
A
A
B
(-»
A
Normal spacing
A B
(
~» A
AB
(
._»
A
Unequal spacing
AB
^j A
(Move
stylus
B
AB ^>
A
to the right)
A
BC A
Unequal spacing
A BC A
(Move
stylus
C
A BC A
to the
right)
A
B
"»
A
Unequal
spacing
A
B
r-\
A
(Move
stylus
A
A
B C A
to
the left)
FIGURE
4. COLUMN
CHARACTER
ALIGNMENT
CLEANING
PROCEDURE
After printing
10
or
more rolls
of paper
a
small
amount
of
dust
will accumulate
under the
print head assembly.
At this
time, the
front plate of
the
housing should
be removed
and
the
dust cleaned
out with
a small
brush or alcohol
saturated
pads.
m
LIMITED
WARRANTY
Radio
Shack
warrants
for a
period of
90 days
from
the
date
of
delivery
to
customer
thatjhe
computer
hardware
described
herein
shall
be
free
from
defects in
material
and
workmanship
under
normal
use
and
service.
This
warranty
shall
be
void
if the
computer
case or
cabinet
is
opened
or
if
the
unit
is
altered or
modified.
During
this
period,
if a
defect
should
occur,
the
product
must
be returned
to a
Radio
Shack
store
or
dealer
for
repair.
Customer's
sole and
exclusive
remedy
in the
event of
defect
is
expressly
limited
to the
correction
of
the
defect
by
adjustment,
re-
pair
or
replacement
at Radio
Shack's
election
and
sole
expense,
except
there
shall
be no
obligation
to
replace
or repair
items
which
by
their
nature
are
expendable.
No
representation
or
other
affirmation
of
fact,
including
but
not
limited
to
statements
regarding
capacity,
suitability
for
use,
or
performance
of
the
equipment,
shall
be
or
be
deemed
to
be a
warranty
or
representation
by
Radio
Shack,
for any
purpose,
nor
give
rise
to
any
liability
or
obligation
of Radio
Shack
whatsoever.
EXCEPT
AS
SPECIFICALLY
PROVIDED
IN
THIS
AGREEMENT
THERE
ARE
NO
OTHER
WARRANTIES,
EXPRESS
OR
IMPLIED'
INCLUDING,
BUT
NOT
LIMITED
TO, ANY
IMPLIED
WARRANTIES
OF
MERCHANTABILITY
OR
FITNESS
FOR
A
PARTICULAR
PUR-
POSE
AND
IN
NO
EVENT
SHALL
RADIO
SHACK
BE
LIABLE
FOR
LOSS
OF
PROFITS
OR
BENEFITS,
INDIRECT,
SPECIAL
CONSE-
QUENTIAL
OR
OTHER
SIMILAR
DAMAGES
ARISING
OUT
OF
ANY
BREACH
OF
THIS
WARRANTY
OR
OTHERWISE
m
RADIO
SHACK
g
A
DIVISION
OF
TANDY
CORPORATION
U.S.A.:
FORT
WORTH,
TEXAS
76102
CANADA:
BARRIE,
ONTARIO
L4M
4W5
AUSTRALIA
TANDY
CORPORATION
BELGIUM
280 316
VICTORIA
ROAD
RYDALMERE
NSW 2116
U l<
PARC
INDUSTRIEL
DE
NANINNE
5140
NANINNE
BILSTON
ROAD
WEDNESBURY
WEST
MIDLANDS
WS10
7JN
278-298-0077
PRINTED
IN
U.S.A.
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