HP 8340b User Manual

TOP OF INSTRUMENT
5.
Refer to
VIEW
C.
Remove
W3
and
W4
from
the
A16
assembly.
Loosen
the
other end
of
W3
so
the
cable
can
swing
away
from
the
A16
assembly.
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CAUTION
j
W4
does not
have
a
captive
nut.
When
disconnecting
W4,
be
careful
not
to
put
side
pressure
on
the cable
or
the
center
conductor
of
A16J1
may
be
damaged.
6.
Refer
to VIEW
C.
Using
a
large
posidnv,
remove
two
screws
(item 7)
from
the
RF
deck.
7.
Refer to
VIEW
C.
Disconnect
W13
from
A18.
Using
a
small
posidriv,
remove
one
screw
(item 3)
that holds
the
A8
casting
to
the
A62
Mother¬
board.
While
performing
this
step,
take
note
of
the
flange
that
the
(item
3)
screw
goes
through.
This
flange
will
catch
on nearby
cables
when
you
try to
open
the
RF
deck.
Move
the cables
out
of
the
way
when
swinging
the
RF
deck
open.
BOTH TOP
AND
BOTTOM OF
INSTRUMENT
8.
While
holding
W14
clear
of
A12
(Bottom of
instrument),
grip
any
handy
component
on
the
RF
deck.
Push
the entire
RF
deck firmly
toward
the
center
of
the
instrument
(away
from
the
side
panel)
and
pull
the
A8
casting.
The
RF
deck
will
swing
open.
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CAUTION
j
To avoid
crushing
A20
toroid
coils
mounted
near
the
RF
deck
hinge,
do
not
open
the
RF
deck to
more
than
a
45
degree angle
from
its
original
position.
Refer
to
VIEW
D.
Using a
small flat-head
screwdriver
or
connector removal
tool,
disconnect
the
ribbon
cable from
the
A13
SYTM.
j
[
CAUTION
j
Do
not
attempt
to
remove
the ribbon
cable
with
your
fingers
or
you
will
certainly
bend pins
on
the ribbon
connector.
9.
Refer
to
VIEW
C.
Remove
the
following
cables
from
components
on
the
RF
deck:
Ribbon
Cable
W31
with
a
small
tool,
see
the
above
caution.
W29
(Located
under
W31
ribbon
cable.
W29
is
marked
"A16J4")
W28
(W28
is
marked
"A16J3")
W25
(W25
is
marked
"LO
PLS
MOD")
W23
(W23
is
marked
"A8-100
IN")
W24 (W24 is
marked "A8-MOD
IN")
10.
Refer
to VIEW
C.
Using
a
small
posidriv,
remove
5
screws,
item
14.
CAREFULLY
REMOVE THE
RF
DECK.
HP 8340B/41B
Reference Loop
-
M/N Loop Repair
Procedures
B-45

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English