Special Handling Of Components; Power Supply Fan; Cables And Connectors; Hard Drives - HP xw4100 Service And Technical Reference Manual

removal and replacement procedures

4.1.5 special handling of components

The following components require special handling when servicing the workstation.
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WARNING: When lifting or moving the workstation, the front bezel should not be used as a handle
or lifting point. Lifting the workstation from the front bezel or lifting it incorrectly could cause the unit
to fall and cause harm to the user and/or 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.

power supply fan

The power supply fan is a variable-speed fan based on the temperature in the power supply.
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CAUTION: The cooling fan is off only when the workstation is turned off or the power cable has been
disconnected.
The cooling fan is always on when the workstation is either in the "On," "Standby," or "Suspend" modes.
You must disconnect the power cord from the power source before opening the workstation to prevent
system board or component damage.

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
whenever possible. In all cases, avoid bending or twisting the cables, and ensure that the cables
are routed in such a way that they cannot be caught or snagged by parts being removed or
replaced.
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CAUTION: When servicing this workstation, ensure that cables are placed in their proper location
during the reassembly process. Improper cable placement can damage the workstation.

hard drives

Handle hard drives as delicate, precision components, avoiding all physical shock and vibration.
This applies to failed drives as well as replacement spares.
If a drive must be mailed, place the drive in a bubble-pack mailer or other suitable protective
packaging and label the package "Fragile: Handle With Care."
Do not remove hard drives from the shipping package for storage. Keep hard drives in their
protective packaging until they are actually mounted in the workstation.
Avoid dropping drives from any height onto any surface.
If you are inserting or removing a hard drive, turn off the workstation. Do not remove a hard
drive while the workstation is on or in standby mode.
Before handling a drive, ensure that you are discharged of static electricity. While handling a
drive, avoid touching the connector. For more information about preventing electrostatic
damage, see the "electrostatic discharge information" section in this chapter.
Do not use excessive force when inserting a drive.
Avoid exposing a hard drive to liquids, temperature extremes, or products that have magnetic
fields such as monitors or speakers.
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