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SERVICING
SAFETY
SUMMARY
FOR
QUALIFIED
SERVICE
PERSONNEL
ONLY
494A|494AP
Service
Vot.
1
Do
Not
Service
Alone
Do
not
perform
internal
service
or adjustment
of
this
product
unless
anoth€r
person
capable
of
rendering
first
aid
and
resuscitation
is
present.
Do
Not
Wear
Jewelry
.
Remove
jewelry
prior
to
servicing.
Rings,
neck-
laces,
and
other
metallic
objects
could
come
into
con_
tact
with
dangerous
voltages
and
currents.
Use
Gare
When
Servicing
With
power
On
Dangerous
voltages
exist
at
several
points
in
this
product.
To
avoid
personal
injury,
do
not
touch
exposed
connections
and
components
while
power
is
on.
Djsconnect
power
before
removing
protective
panels,
soldering,
or
replacing
components.
Power
Source
This
product
is
intended
to
operate
from
a
power
source
that
will
not
apply
more
than
250
volts
rms
between
the supply
conductor
and ground.
A
protective
ground
connection
by way
of
the
grounding
conductor
in the
power
cord
is
essential
for
safe operation.
X-Radiation
X-ray
emission
generated
within
this
instrument
has
been sufficiently
shielded.
Do
not
modify
or
otherwis€
alter
the
high
voltage
circuitry
or
the crt
enclosure.
TERMS
In
This Manual
CAUTION
statements
identify
conditions
or
prac_
tices
that
could
result
in
damage
to
the equipment
or
other
property.
WARNING
statements
identify
conditions
or
prac_
tices
that could
result
in
personal
injury
or loss
of liie.
As Marked
on Equipment
CAUTION
indicates
a
personal
injury
hazard
not
imm€diately
accessible
as
one
reads
the marking,
or
a
hazard
to
property
including
the
equipm€nt
itself.
DANGER
indicates
a
personal
injury
hazard
immedi-
atefy
accessible
as
one
reads
the
marking,
SYMBOLS
In
This
Manual
This
symbol indacates
where
appticable
cau-
tionary
or other
information
as to
be
tound.
As
Marked
on Equipment
t
DANGER
-
High
vortage.
Protective ground
(earth)
terminal-
ATTENTION
-
Refer
to
manual.
Refer
to manual.
Grounding
the Product
This
product
is
grounded
through
the
grounding
conductor
of
the
power
cord.
To
avoid
electrical
shock.
plug
the
power
cord into
a
properly
wired
receptacle
before
connecting
to
the
product
input or
output
termi-
nals.
A
protective ground
conn€ction
by
way of
the
grounding
conductor
in
the
power
cord
is
essential
for
safe operation.
Danger
Arising
From
Loss
of Ground
Upon loss of
the
protective
ground
connection,
all
accessible
conductive
parts
(including
knobs
and con-
trols
that
may appear
to
be
insulating) can
render an
electric
shock.
Use
the
Proper Power
Cord
Use
only
the
power
cord and connector
specified
for
your product.
Use
only a
power
cord
that
is in
good
condition.
For
detailed
information
on
power
cords and con-
nectors
see
Section 1.
e
A
o