Radio Shack TRS-80 Operation Manual page 13

2/
Setting
Up
the
PTC-64
Printer
Controller
Before connecting
the
PTC-64
to
your
system, observe the following precautions:
•
Do
not connect
the
PTC-64
to the
same
outlet as noise-generating
equipment
(air
conditioners, copy machines,
etc.).
•
Select a
flat,
sturdy
work
surface
where you have
easy access
to
the keys.
Computer
Parallel
Printer
Cable
Additional
Printer
Cable
(26-4401)
PTC-64
Connecting
the
PTC-64
to
Your System
l.
Turn
all
equipment
OFF
(your computer and any
peripherals,
including the
printer).
2.
Connect
the computer's
parallel printer cable
to
the
PTC-64's Computer
Input
Connector. Note
that the
cable can only be
inserted
in
one way.
If
it
seems unusually
difficult to insert the cable, turn
it
over and
try again.
3.
Connect
the additional printer cable (26-4401)
to the
PTC-64's
Printer
Output
Connector and
to the parallel input connector of the
printer.
4.
Connect
the
AC
adapter plug
to the
AC
Jack on
the rear panel of
the Printer
Controller
and
then plug
it
into a wall outlet or into
an approved power
strip
such
as
Radio Shack's Automatic
Power
Controller (26-1429).
Note:
If
you
use
a
SW-302
Parallel
Printer Selector (26-1498), you
may
connect
the
PTC-64
in
one of two ways:
(1)
Between
the Printer
and
the Selector
—
In
this
way, two computers may
use
the
PTC-64
simply by
flipping the switch
on
the selector.
(2)
Between
the Selector
and
the
Computer
—
In this
way,
the
PTC-64
can
only be used by
the
Computer
that's directly
connected
to
it.
Power
Up
Sequence
The Power
Up
Sequence
may
vary according
to
your system. For
specific
power up
instructions consult
your computer's owner's manual.