HP 8340b User Manual

Sweep
Generator
-
YO
Loop
Repair
Procedures
PLACING
THE
YO ASSEMBLY
INTO
THE SERVICE POSITION
Equipment
Required
Pozidnve
screwdriver
1/4
inch
open
end
wrench
5/16
inch
open
end
wrench
Procedure
1.
Remove
the
top
and
bottom
covers
from
the
instrument.
Place
the
instrument
so
that
it
is
in its
normal operating
position.
Refer
to
Figure
D-8,
W3
Connection.
2.
Using
the
two wrenches
listed
above,
disengage
W3
from
the
cable
coming
from
the
other
side
of
the
motherboard.
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v
CAUTION
3
It
is critical
that
step
2
be
performed
before proceeding or damage
to
the
instrument
will
result.
3.
Turn
the
instrument
upside-down.
Refer
to Figure
D-9,
YO
Loop
Removal. Remove
the
cables
going
to
A49J2
and A49J3.
Remove
the
three
screws
shown
as
item
1.
Remove
the
screw
shown
as
item
2.
Item
1
screws
are
different
from
the
item
2
screws,
keep
them
separate.
4.
Refer
to
Figure
D-10,
YO
Loop
in
Service
Position, before
proceeding.
Gently
pull
on
the
YO
loop
while
moving
it
from
side-to-side.
Do
not
use
excessive force.
Remove
the
YO
loop
assembly
and
hold
it
upright.
Set
the retaining
tabs
over
the
adjacent
aluminum divider.
The
locking
screw
can now
be
engaged
to
hold
the
YO
loop
securely
in
place.
Replace
the
cables
going
to
A49J2
and A49J3.
(
CAUTION
}
<'w^^^^w>
When
replacing
the
YO
loop
assembly,
be
careful
not
to
smash
the
ribbon
connector,
A50W1.
5.
To
reinstall
the
YO
loop, reverse
the
above
procedure.
D-36
Sweep Generator
-
YO
Loop Assembly-Level
Troubleshooting
Change
10
HP
8340B/41B

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English