HP 330 Service Information Manual page 43

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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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