Special Handling Of Components - HP xw4300 Service And Technical Reference Manual

• Tamper-resistant T-15 wrench (Failsafe key) or tamper-resistant bits (required if you get locked out by solenoid
hood lock)
Screws
The screws used in the workstation are not interchangeable. They might have standard or metric threads and might be
of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. HP strongly
recommends that all screws removed during disassembly be kept with the removed part, then returned to their proper
locations.
NOTE: Metric screws have a black finish. American National (unified) screws have a silver finish.
NOTE: As each subassembly is removed from the workstation, place the subassembly away from the work area to
prevent damage.
If necessary, additional drive guide screws are provided on the system chassis. There are eight Metric screws located
on the chassis near the 5.25-inch optical drive bays. These screws can be used to mount additional optical drives or an
optional diskette drive. There are four American National screws located on the chassis near the hard drive. These
screws can be used to mount additional hard drives in the 3.5" hard drive cage. For more information about this
procedure, see
NOTE: The Metric (black) and American National (silver) screws are not interchangeable.
1 Metric screws (8)
2 American National screws (4)

4.1.4 Special Handling of Components

The following components require special handling when servicing the workstation.
WARNING! Do not use the front bezel as a handle or lifting point when lifting or moving the workstation. Lifting the
workstation from the front bezel or lifting it incorrectly could cause the unit to fall and cause harm to the user and
damage to the workstation. To properly and safely lift the workstation, lift it from the bottom of the unit from either the
desktop or minitower configuration.
Cables and Connectors
Cables must be handled with care to avoid damage. Apply only the tension required to seat or unseat the cables during
insertion or removal from the connector. Handle cables by the connector or pull strap whenever possible. In all cases,
avoid bending or twisting the cables, and be sure that the cables are routed in such a way that they cannot be caught
or snagged by parts being removed or replaced.
52 Removal and Replacement Procedures
"Installing Hard Drives in the Optical Drive Bay (Optional)" on page 87.