HP 8340b User Manual

1. Disconnect
W13
from
the
A18
assembly
(Figure
H-23,
view
C).
2.
Disconnect
W14
and
W26
from
the
A12
assembly
(Figure
H-23,
view
B).
3.
Using a
small
pozidriv,
remove
the
two
screws
that
hold
the
A12
assembly
(item
13).
4.
With W13
attached, remove
the
A12
assembly.
5.
Referring
to
the
front panel
—
rear
panel
functional
group,
remove
the
front
panel.
You
don't
need
to
remove
the ribbon
cables.
6.
Remove
the
two
screws
(item
6)
that hold
the
A10/A12
assembly
mounting
bracket.
7.
Remove
the
high
band
detector
assembly
(AH) from
A10J2.
8.
Remove
the
W16
cable
from
the
A13
SYTM
assembly.
9.
Carefully
remove
the
other end
of
W16
from
the
precision
3.5
mm
A10J1
connector.
10.
Carefully
remove
the
cable from
the
A10J3
connector
(near
the
front
panel).
Avoid axial
force
on
the
cable.
11.
Pull
the
A10/A13
mounting
bracket
out
far
enough
to
access
the
screws
that
hold
the
A10
assem¬
bly
in
place,
and
remove
the
screws.
12.
To
install
a
new
A10
assembly,
reverse
the
above
procedure.
With
the
front panel
removed,
the
cable
going
to
A10J3
is
accessible
through
the
front of
the
Instrument.
A12
Low
Band
Detector
Refer
to Figure H-12
for
related
assemblies,
cables,
and
mounting
hardware locations.
1.
Disconnect
W13
from
the
A18
assembly
(Figure
H-23,
view
C).
2.
Disconnect
W14
and
W26
from
the
A12
assembly
(Figure
H-23,
view B).
3.
Using
a
small
pozidriv, remove
the
two
screws
that
hold
the
A12
assembly
(item
13).
4.
With
W13
attached,
remove
the
A12
assembly.
5.
Disconnect
W13
and
unsolder
the
three wires
attached
to
the
A12
assembly.
6.
To
install
a
new
A12
assembly, reverse
the
above
procedure.
A13
High
Band
SYTM
Replacement Procedure
Refer to Figure
H-23
and
Figure
H-24 for
related
assemblies,
cables,
and
mounting hardware
loca¬
tions.
1.
Using the hinged
RF
deck
access procedure
that follows
these
disassembly
procedures, open
the
hinged
RF
deck
assembly.
NOTE:
When
you
remove
the
ribbon
cable
from
A13A1
(below), note
its
proper orientation.
If
you
put
this
cable
on
backwards,
all
the
power
supplies
shut
down.
H-40
RF
Section
Repair Procedures
HP 8340B/41B

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English