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1
8
Sun-3/75
Hardware
Installation
Manual
NOTE
If the
switch
is
accidentally
placed
in
the
DIAC
position, the
monitor
will
pause
for about
ten
seconds between
the
power-on
diagnostics
and
the
normal
boot
cycle.
During
this
pause,
if
a
key
is
depressed
on
either the
keyboard or
the
Port
A
terminal,
you
will call
up
the
extended
diagnostics
menu.
If
no
key
is
depressed
by
the
end of
the ten
second
pause,
normal boot
cycle
will
automati-
cally start
and you
will
bypass
the
extended
diagnostics.
a
To
force a
reset
of
the
system
after
you have powered
it
up, press the
RESET
switch.
This
places
you
in
a program
called the
"monitor."
To
exit
the
monitor,
you must
reboot the system.
Reboot
the
system
by
typing
"b"
(for
"boot") and
press the return key.
The
system
will
now
begin
to
automatically
reboot.
2.5.
Plugging
in
the
Power
Cord
CAUTION
Before completing
the following connections,
make
certain that the
AC
power
switch of
the
base
unit
is
OFF
and
the the
power
switch of
the
monitor
is
ON.
The
AC
power
is
OFF
when
the
side
marked "0"
is
pushed
in.
So
far
you
have
made
certain that
1
.
the
monitor and
base
unit
have been
set
correctly for available
AC
power,
2.
the
monitor's
AC
cord
is
plugged
into the
base
unit's receptacle,
3.
the
DIAGNOSTICS
switch
is
to the right
—
in the
NORM
position,
4.
the
power
switch
of
the
monitor
is
turned
ON.
Find
the
AC
power
cord.
The
AC
power
cord has a
three-slot
female plug
at
one
end and
a
three-pronged wall
(or
"mains,"
if
European) plug
at
the
other
end.
Plug
the
female
end
into
the
AC
input
on
the
back of your
Sun-3/75.
Again
make
certain
that
the
AC
power
switch
on
the
back
panel
is
OFF
(side
of
the
switch with
the
"0"
is
pushed
in)
then plug
the
other
end of
the
AC
power
cord
into
the
AC
wall
receptacle.
NOTE
The monitor can be
powered
up or
powered
down
independently
of
the
base
unit.
2.6.
Powering
Up
the
Sun-
Turn
the
power
switch
on
the
back
of
the
Sun-3/75
ON
(side
with
the
"
1
"
is
3/75
pushed
in).
The
eight diagnostic
LEDs
on
the
CPU
board
will
begin blinking
on and
off
(see
below,
"Power-On
Self
Test Procedures" and
the table following,
"Diagnostic
LEDs")
and
the
CRT
screen
will
slowly
come
on.
You may
also notice a
+ For
more
information, please tec
Installing
Unix on
a
Sun
Workstation,
part
number
800-1317.
Revision
A
of 31
September
1986
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