Agilent Technologies HP 83711B Service Guide

Troubleshooting
6.
Measure
the
voltage at
TP6 on
the microprocessor
assembly.
If the
voltage is
within the
tolerance
shown
in
the table
, replace
the microprocessor
assembly.
If it
is missing
or out
of
tolerance
,
continue
with the
next step
.
7.
Measure
the
voltage
at
TP4 on
the YIG
Driver assembly
. The
voltage should
be within
the
tolerance
shown
in
the
table
.If
it is
missing or
isn't within
tolerance,
replace the
YIG
Driver
assembly
.If
it is
within tolerance
,check
the continuity
of the
ABUS cable
(W9)
with
an
ohmmeter
and
replace
it if
necessary.
8.
Use
the
direct
control
function to
cause the
analog multiplexer
on
the
YIG
Driver
assembly
to
switch
the
\no
connect"
input to
its output.
a.
Press 4
SPCL
5
.
b.
Press 4
60
5
on the
numeric keypad,
then terminate
the entry
by
pressing
4
Hz
5
(ENTER).
c.
Press 4
48
5
on the
numeric keypad,
then terminate
the entry
by
pressing
4
Hz
5
(ENTER).
d.
Press 4
0
5
on the
numeric keypad,
then terminate
the entry
by
pressing
4
Hz
5
(ENTER).
9.
Measure the
voltage at
TP4 while
disconnecting the
ABUS
cable
from
each
of
the
other
assemblies
(one at
a time).
The
voltage
will
change
to
a
non-negative
value
when
the
ABUS
cable
is removed
from
the
assembly
that
is
loading
the
ABUS
down.
Replace
the
assembly
that
is
loading
the
ABUS
down.
If
no
change
is
noted
after
the
ABUS
cable
has
been
disconnected
from
all
assemblies
,
replace
the
ABUS
cable
.
1-24 Troubleshooting

Agilent Technologies HP 83711B Specifications

General

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