Front/Rear-P
anel
F
eatures
Front-P
anel
Indicators
LINE
ON
Indicator
A
green
LINE
ON
indicator
LED
,
located
on
the
lower
left
front-panel,
is
illuminated
when
power
is
applied
to
the
unit.
F
ault
Indicator
LEDs
The
following
three
fault
indicators
are
located
on
the
lower
center
front-panel.
V
OL
T/TEMP
red
fault
LED
.
CURRENT
red
fault
LED
I/O
red
fault
LED
Some
older
models
may
have
a
fourth
fault
indicator
labeled
AIR
FLOW
.
The
circuitry
for
this
indicator
has
been
disabled.
A
description
of
conditions
that
can
cause
these
fault
indicators
to
turn
on
is
supplied
in
Chapter
5,
\Troubleshooting."
Module
Latch
The
module
hex-nut
latch
secures
a
module
in
a
mainframe
.
When
a
module
is
being
installed
into
or
removed
from
an
HP
70001A
Mainframe
,
an
8
mm
hex-ball
driver
is
used
to
turn
the
module
latch
screw
.
Refer
to
Chapter
2,
\Module
Installation."
1-6
General
Information
