Agilent Technologies HP 83711B Service Guide

Troubleshooting
Caution
Unplug the
instrument
before
disconnecting
or
removing
any
boards
.
Some
boards
contain
devices
that
can
be
damaged
if
the
board is
removed when
the
power
is
on.
There
are
several
components
including
MOS
and
CMOS devices
that can
be
damaged
by
electrostatic
discharge
.
Use
conductive foam
and grounding
straps
when
servicing
sensitive
components
.
Carefully
unplug
ICs
in high-grip
sockets
.
After-Service
Safety Checks
Visually
inspect the
interior of
the instrument
for
any
signs
of
abnormal
internally
generated
heat,
such as
discolored printed
circuit boards
or
components
,
damaged
insulation,
or
evidence
of
arcing. Determine
and remedy
the cause
of
any
such
condition.
Using
a suitable
ohmmeter
,
check
the
resistance
from
the
instrument
enclosure
to
the
ground
pin
on the
power
cord
plug.
The
reading
must
be
less
than
one
ohm.
Flex
the
power
cable
while
making
this
measurement
to
determine
whether
intermittent
discontinuities
exist.
Check
any
indicated
rear-panel
ground
terminals
that
are
marked,
using
the
above
procedures
.
Check
the
resistance
from
the
instrument
enclosure
to
line
and
neutral (tied
together) with
the
on/o
switch in
the ON
( j
) position
and
the
power
source
disconnected.
The
minimum
acceptable
resistance
is
two
megohms.
Replace any
component
that
results
in
a
failure
.
Check
the
line
fuse
to verify
that a
correctly
rated
fuse
is
installed.
ESD
Precautions
There
are
several components
including MOS,
CMOS,
and
microwave
devices
that
can
be
damaged
by
electrostatic discharge
(ESD). A
sensitive
assembly
should
be
stored
in
an
antistatic
container
whenever
it is
not installed.
Use
a
static
free
work
area
and
a
properly
grounded
wrist strap
. Refer
to Chapter
10, \Legal
and
Regulatory
Information,"
for
more
detailed
information.
Recommended
T
est
Equipment
Test equipment and accessories required to maintain the instrument are listed in
Table 1-1,
\Recommended T
est Equipment." Equipment other than that listed may be used if it meets the
critical specications listed in the table
.
Troubleshooting 1-3

Agilent Technologies HP 83711B Specifications

General

Brand	Agilent Technologies
Model	HP 83711B
Category	Test Equipment
Language	English