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Radio Shack TRS-80 User Manual page 7

Micro computer system
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SETTING
UP THE SYSTEM
Carefully
unpack
the system.
Remove
all
packing
material.
Be
sure
you
locate
all
cables,
papers,
tapes, etc.
Save the packing
material
in
case
you
need
to transport the system.
Connecting
the
Video
Display
and Keyboard:
1.
Connect
the
power
cord
from
the
Video
Display to
a
source of
120
volts,
60
Hz
AC
power. Note
that
one prong
of the
AC
plug
is
wider
than
the other
the
wide prong should go
into the
widest
slot
of
the
AC
socket.
NOTE:
If
you
use
an
AC
extension
cord,
you
may
not be
able to
plug the
Display's
power
cord
in.
Do
not attempt
to force
this
wide prong
into
the extension cord; use a wall outlet
if
at
all
possible.
Connect
the
power
cord
of
the
Power
Supply
to a
source of
120
volts,
60
Hz
AC
power.
Connect
the gray cable
from
the front
of the
Video Monitor
to the
VIDEO
jack
on
the
back
of
the
Keyboard
Assembly.
Take
care to
line
up
the pins correctly
(the
plug
fits
only
one
way).
NOTE:
Before
the
next
step,
be
sure the
POWER
switch
on
the
back
of the
Keyboard
is
off
(button
out).
Connect
the gray cable
from
the
Power
Supply
to the
POWER
jack
on
the
back
of the
Keyboard
Assembly.
Again, take
care
to
mate
the
connection
correctly.
2.
3.
4.
POWER BUTTON
POWER POWER VIDEO
TAPE
BUTTON
(ON
REAR)
Connecting
the Cassette
Recorder:
NOTE: You
do
not need
to
connect
the Cassette
Recorder
unless
you
plan to record
programs
or to load
taped
programs
into
the
TRS-80.
1.
2.
Load
batteries into
the
CTR-41
as
described
in
the
Manual.
Or
make
connections
for
120
volt
AC
power.
Connect
the short cable
(DIN
plug
on one end and
3 plugs
on
the
other) to
the
TAPE
jack
on
the
back
of the
Keyboard
Assembly.
Be
sure
you
get
the plug
to
mate
correctly.
The
3 plugs
on
the other
end
of
this
cable are for
connecting
to
the
CTR-41.
A.
Connect
the black plug
into
the
EAR
jack
on
the
side
of the
CTR-41.
This connection provides the
output
signal
from
the
CTR-41
to the
TRS-80
(for
loading
Tape
programs
into
the
TRS-80).
Connect
the
larger
gray plug
into
the
AUX
jack
on
the
CTR-41.
This
connection
provides the recording
signal
to
record
pro-
grams
from
the
TRS-80
onto
the
CTR-41
's
tape.
Also, plug the
Dummy
Plug (provided with the
CTR-41)
into
the
MIC
jack
(this
disconnects the
built-in
Mic
so
it
won't
pick-
up
sounds
while
you
are
loading
tapes).
NOTE:
Be
sure
you
always
use the
Dummy
Plug
when
loading
programs onto
tape (Recording).
B
Dummy
Plug
C.
Connect
the smaller gray plug
into
the
REM
jack
on
the
CTR-41.
This allows
the
TRS-80
to
automatically control the
CTR-41
's
motor
(turn tape
motion on and
off for
recording
and
playing
tapes).
Notes
On
Using
The
Recorder
There
are a
number
of
things
you
should be aware of
as
you
use the
Cassette
Tape System:
(Some
of
this will
be covered
in
greater
detail
in
Chapter
9
.
.
.
but
some
of
you
can't
wait
till
then
.
.
.
can
you!)
1.
To
Play
a
tape (load a taped
program
into
the
TRS-80),
you must
have
the
CTR-41
's
Volume
control
set
to
7
to
8.
Then
press
the
CTR-41
'
s
PLAY
key and
then type
CLOAD
on
the
TRS-80
and
I3i?fcl3;l
this
command.
This
will start
the tape
motion.
An
*
will
appear
on
the
top
line
of the
Monitor;
a
second
* will
blink,
indi-
cating the
program
is
loading.
When
loading
is
done,
the
TRS-80
will
automatically turn the
CTR-41
off
and
flash
READY
on
the
screen.
You
are
then ready
to
RUN
the
program
(type
in
and
hit
021133).

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