Hard Drives; Lithium Coin Cell Battery; Customer Self-Repair - HP xw4550 Service And Technical Reference Manual

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.
CAUTION:
during the reassembly process. Improper cable placement can damage the workstation.

Hard drives

Handle hard drives as delicate, precision components, and avoid all physical shock and vibration. This
guideline 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 new or replacement 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.
●
Power off the workstation before removing a hard drive. Do not remove a hard drive while the
workstation is on or in standby mode.
●
Ensure that you are discharged of static electricity before handling a drive. While handling a drive,
avoid touching the data connector.
CAUTION:
always connect the drive power cable before connecting the data cable. This will discharge any
accumulated static electricity through the drive power cable to the workstation chassis.
For more information about preventing electrostatic damage, see
information on page
●
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.

Lithium coin cell battery

The workstation battery provides power to the real-time clock and has a minimum lifetime of
approximately three years.
For instructions on battery removal and replacement, see the
chapter.
WARNING!
battery is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose of
in water or fire, or expose it to temperatures higher than 140° Fahrenheit (60° Centigrade).
NOTE: Batteries, battery packs, and accumulators should not be disposed of with general household
waste.

Customer Self-Repair

Customer Self-Repair enables you to obtain replacement parts and install them yourself on your
workstation. See
56 Chapter 4 Removal and replacement procedures
When servicing this workstation, be sure that cables are placed in their proper location
To prevent possible damage from static electricity from in the drive being installed,
52.
This workstation contains a lithium battery. There is a risk of fire and chemical burn if the
http://www.hp.com/go/selfrepair
Electrostatic discharge
Battery on page 81
for more information.
section of this
ENWW