Assembly
Replacement 2
lintroduction
Replacing
parts
in
either
the
computer
and
expander
require
almost
identical procedures.
With
the
exception
of
a few
parts
unique
to
each
unit,
the
access
and
replacement procedures
are
the
same.
VVhen
the
process is
the
same
for
both
the
computer
and
expander,
they
are
referred
to
as
the
"unit".
If
different procedures are used for
the
computer
or
expander,
the
name
of
the
unit
is
used.
Tools Required
CAUTION
The
computer
and
bus
expander
use
metric
screws
requiring
the
use
of
Pozidriv®
screwdrivers.
Do
not
use
other
cross-tip screwdrivers,
such as Phillips
or
Reed-Prince.
They
will eventually
damage
the
Pozidriv®
screw
head
recess
making
screws
hard
to
remove.
All field replaceable
parts
can
be
accessed
with
these tools:
• Static-free Workstation,
HP
Part
Number
9300-0794
•
#1
Pozidriv®
screwdriver, 4-inch (100 mm) blade.
Used for all screws except
the
power supply
ground
tab
screw
and
expander
to
computer
attaching
screws.
•
#2
Pozidriv®
screwdriver, 4-inch (100
mm)
blade.
Used for
the
power supply
ground
tab
screw
and
expander
to
computer
attaching
screws.
•
Flat-tip
screwdriver, 0.125-inch (3
mm)
wide tip, 4-inch (100
mm)
blade.
• Anti··Static Bags
Access Flow Chart
Figure
2-1
is
an
Assembly Access Flow
Chart
showing
the
access process
to
replace
parts.
To
use
this
chart,
identify
the
part
to
be
replaced
at
the
bottom
of
the
chart.
Then
start
at
the
top
of
the
chart
and
work
through
the
blocked
steps
toward
the
part
to
replace.
This
flow
chart
can
also
be
used as a guide
to
install assemblies by
starting
at
the
bottom
and
working
toward
the
top.
If
you are learning how
to
replace
parts
in
the
computer
and
bus
expander,
you
may
want
to
start
at
the
left side
of
the
flow
chart
and
remove each
part
in sequence.
Procedures
in
this
chapter
are
also organized in
the
same
manner.
Referencing
the
Model
330/350
Service
Handbook,
Chapter
8, Replaceable
Parts,
as you remove each
assembly/part
for
the
first
time
will help associate
the
part
numbers
with
their
respective assemblies
Assembly Replacement
27
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