Radio Shack TRS-80 DWP-210 - 3; Using the DWP-210; Printer Self Test

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Using
the
DWP-210
Once
the
DWP-2
1 is properly
installed
arid correctly
set up,
you can
begin
using
it.
'
Self Test
Perform the Self
Test to insure that the Printer
is
operating properly, Do not
per-
form the
Self
Test unless the Printer
is
loaded
with wide
(10") paper,
since
the Test prints the full
width of the Platen"
Printing directly
on the
Platen can
shorten
the life of
the Print Wheel
and
the
Platen.
Self Test
is performed in
600
baud
mode only. Be sure you've
set the DIP
Switch
No. 2 to CLOSE.
1
.
Turn the Power
Switch ON.
2.
Make sure
that the Carriage
returns
to
the left
position.
<-
3.
Turn the Power
Switch OFF.
4.
Set DIP
Switch No. 5 to
CLOSE.
5.
Turn
the Power Switch ON.
A
Print Wheel
index
test is conducted
auto-
matically. (The Print-Wheel turns
clockwise ten times.)
6.
Test printing
follows and continues
until the Power
Switch is
turned OFF.
7.
Be sure
to OPEN DIP
Switch No. 5 after the
test.
Setting
the
Pitch
Select
Switch
Be
sure to set the Pitch
Select
Switch (on the
Operating Panel)
to the
position
that corresponds
to the Print Wheel
you are
using. That
is, if you are using
a
Courier
10-pitch Wheel, for
example, set the
Switch
to
10;
if you are
using a
Proportional
Space Wheel,
set the Switch
to PS.
Do not accidentally
bump the Pitch
Select Switch during
printing.
Unless
you
change the
pitch via software,
the current switch
setup remains
in effect.
Once
you change the
pitch via software,
you must turn
the Power
Switch off before
you can use the
Pitch Select
Switch.
Control
Codes
and
the DWP-210
Before
using the
DWP-2
1
0,
consider how
the
TRS-80 communicates
with
the
Printer.
All information
is sent to the
Printer
as numbers between
and 255 decimal
(00-FF for
you hexadecimal
fans). The Printer
interprets
these
numbers
according
to
the
Modified ASCII Code (listed in Appendix
B).
Most numbers
(or
codes)
are
printed
as letters,
numbers,
or symbols.
However, the
numbers
0-31
decimal,
as well as some
special sequences
of
code numbers,
are used
to "control"
various
functions of
the Printer.
These "Control
Codes"
allow you
to control
line feeds,
backspacing,
underlining,
etc.
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