HP 8340b User Manual

HINGED RF DECK ACCESS
PROCEDURE
You
must
perform
the following
procedure
to
replace
the
following
assemblies:
•
A13
high
band
SYTM
•
A16
Mod
Splitter
•
A18
low
band
power
amplifier
•
AT1
high
band peripheral
mode
isolator
Refer
to Figure
H-24
assemblies, cables,
and
mounting
hardware
locations.
1.
Remove
the instrument
top,
bottom,
and
perforated
side
covers.
2.
Place
the
instrument
on
its
left
side
(as
viewed
from
the
front).
y^^^^,»
^CAUTIONj
A10J1, A10J2,
and
A10J3
are
precision
3.5 mm
connectors.
The
cables
and the
high
band
detector assembly
that
connect
to
them
use
SMA
connectors.
Take
extreme
care
when
disconnecting or
connecting
an
SMA
cable and
a
precision
3.5
mm
connector.
The
SMA
cable
center
conductor
must
align
with
the
3.5
mm
connector center conductor.
Any
axial
force on
the
cable
when
you
disconnect
the
SMA
fitting
can
damage
the
3.5
mm
connector center conductor,
and
the
A10
directional
coupler
will
have
to
be
replaced.
Remove
the
axial
force
on
the
cable
by
first
disconnecting
the end of the cable
that
does
not
mate
with
the
3.5
mm connector,
or
by
removing
the
A10
assembly
mounting
screws.
Do
both
where possible.
The
A11J1
connector
has
a
captured
nut
that
does
not allow axial
force
on
the
precision
3.5 mm
center
conductor
until
well
after
the
SMA
center
conductor
is
disengaged.
Instrument
Bottom
3.
Remove
W14
from
the
A12
assembly.
4.
Disconnect
W16
from
the
A13
high
band
SYTM.
5.
Carefully disconnect
the
other
side
of
W16
from
the
A10
assembly
and completely
remove
W16
from
the
instrument.
Avoid
axial
force on
the
W16
to
A10J1
connection.
6.
Remove
the
three
side
panel
screws
(item 4)
that
hold
the
A13
assembly
to
the
side
rail.
7.
Remove
the
two
side
panel
screws
(item
5)
that
hold
the
RF
deck to the side
rail.
Instrument Top
8.
Remove
W3
and
W4
from
the
A16
assembly.
9.
Remove
the
two
screws
(item
7)
from
the
RF
deck
(view
C).
10.
Remove
the
screw
(item
3)
holding
the
A8
casting to
the
A62
motherboard.
HP 8340B/41B
RF
Section
Repair Procedures
H-37

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English