5.
Performing
the
Printer
Power-On
Test
Please do NOT
turn on
your
computer
until
after
you have
completed
the
next
two
sections.
a.
Turn
on
your printer.
The
print
head
should
move to
the
center
of
the carriage
automatically
and
then
return to
the
original
position.
If
this
doesn't happen,
move
to step
"b".
b.
If the print
head
does
not
move as
described
above,
check
to see if
the
connecting
cable is
properly
plugged
in.
Then
turn
on
your
printer
and try
the test again.
6. Performing
the
Print Head
Test
You can
test the print
head
and
ribbon
ONLY
AFTER
INSERTING
PAPER.
DO NOT
PRINT
WITHOUT
PAPER;
it
could easily
damage
your
print head. To
perform
the
test, simply
switch the
self-diagnostic
switch to
"T"
(shown in
Fig.
2.9).
The
printer
will
continue to
print
all
the
characters
available
until
1)
the
printer is
turned off;
or
2)
the
self-diagnostic
switch
is
"flipped" to position
4
or
5.
When the
printing
is
finished,
remove
it
from
the machine
and examine
it
for
defects.
Please
report any
problems
immediately to your
local
Commodore
dealer
so that your
printer
can be
properly
serviced.
A
typical
printout
for the
VIC
20
is
shown below.
2.9:
Test
Position
Selected
i
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2.10:
Sample
Printout
12.
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