HP 8340b User Manual

Transformer
Installation
1.
Reverse
the
above
procedure.
NOTES:
When
you
reverse
step
4a,
do
not allow
the
transformer
secondary wires
to
touch
adjacent
A62
motherboard
lugs.
Ensure
that
the
white
transformer secondary
wire pair
is
reattached
to
the
A62
motherboard
lug
labeled
(9).
DO
NOT
attach
it
to
the
taller, unmarked
lug.
When
reversing
step
4a,
ensure
the
blue
transformer
secondary
wires
are
completely
inside the
plastic
clamp.
If
the
plastic
clamp
hardware
is
mounted
in
the
wrong
side
panel
hole,
the
A19
assembly
will
not
go
back
in
place.
Reinstall the
A19
capacitor assembly
as
follows:
1.
Lift
the
two
grey
cables
out
of
the
way.
2.
Lower
the
A19
assembly flange-end
first
until
the
finger contact end drops
in
place.
3.
Lift
up
slightly
on
the
flange-end,
and
push
down
on
the
finger
connector
side
until
the
fingers
are
fully
seated.
LINE
MODULE REPLACEMENT
Read
the
entire procedure
before you
start!
Line Module
Removal
Refer
to
Figure
1-6.
1.
Ensure
that the
main
line
fuse and
the
selected
line
voltage
are
correct.
2.
Disconnect
line
power,
and
remove
the
instrument
top
and
bottom
covers.
3.
Wait
for
the
A19
power-on
safety
indicator
to
go
out.
4.
Remove
the
portion
of the
rear
panel
that
holds
the
line
module:
a.
Remove two
screws
(item
12).
b.
Invert
the
instrument
and
remove
three
rear
panel
screws
(item
7).
c.
Remove
the
A35
assembly
protective
cover
d.
Remove
three
rear
panel
screws
(item 13).
e.
Remove
the
fan.
f.
Remove
three
rear
panel
screws
(item
8).
g.
From
inside the
instrument,
push
the
rear
panel
out.
5.
Desolder
all
wires
from
the
line
module.
HP8340B/41B
Change
4
Power Supplies/Fan
Repair Procedures
1-19

HP 8340b Specifications

General

Brand	HP
Model	8340b
Category	Inverter
Language	English