HP 8340b User Manual

A17
Low
Band
Mixer
Replacement
Procedure
Refer
to Figure
H-23
for related
assemblies, cables,
and mounting
hardware
locations.
1.
Remove
the
four
screws
on
the
A17
assembly (one
on
each
corner).
2.
Disconnect
the
three
cables
that
go
to
the
A17
low
band
mixer,
and
remove
the
assembly.
3.
Install
a
new
assembly
by
reversing
the
above
procedure.
A18/A18A1
Low
Band
Power
Amplifier
Replacement Procedure
Refer
to Figures
H-23 and H-24
for
related
assemblies, cables,
and mounting hardware
locations
1.
Remove
the
two
screws
(item
12)
that
hold
this
assembly
in
place.
2.
Remove
the
cables
that
go
to
the
A18
assembly.
3.
Take
the
assembly out
of the
instrument
and
remove
the
two
countersunk screws
that
hold
the
A18
mounting
plate
to
the
assembly.
4.
Attach the
mounting
plate
to
the
new
A18
assembly
and
install the
assembly
by
reversing
the
above
procedure.
A20
RF
Section
Filter
Replacement Procedure
Refer
to
Figure
H-23
for related
assemblies,
cables,
and mounting
hardware
locations.
1. Remove
all
connectors
from
the
assembly.
2.
Remove
the ribbon
cable
that
goes
to
the
A16A1
and
A20
assemblies.
3.
Remove
the
four
screws
holding
the
assembly
(one
in
each
corner).
4.
Remove
A8W1
and
A18A1W1
and
remove
the
A20
assembly.
5.
Install
the
new
assembly
by
reversing
the
above
procedure.
NOTE:
When
reconnecting
the ribbon
cable
to the
A20
and
A16A1
assemblies, ensure
that
the
pins
do
not
bend.
A63
RF
Attenuator
Replacement
Procedure
1.
Referring to
the
front
panel
—
rear
panel
functional
group,
remove
the
front
panel.
You
don't
need
to
remove
the
ribbon
cables.
2.
Remove
the
two
cables
going
to
the A63
assembly.
3.
Remove
the
two
screws
holding
the
A63
mounting
bracket.
4.
Remove
the
two
screws
holding
the
A63
assembly
to the
mounting bracket.
5.
Install
a
new
assembly
by
reversing
the
above
procedure.
HP8340B/41B
RF
Section
Repair Procedures
H-43/H-44

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English