Screws; Cables And Connectors; Hard Drives; Lithium Coin Cell Battery - HP Z Series Maintenance And Service Manual

● Diagnostics software

Screws

The screws used in the computer are not interchangeable. They could have standard or metric threads
and might be of different lengths.
If you use an incorrect screw during the reassembly process, it can damage the unit. HP strongly
recommends that you keep all screws that you remove during disassembly with the removed part and
then return them to their proper locations.
IMPORTANT:
to prevent damage.

Cables and connectors

Use this information to properly handle cables.
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 route the cables so that they cannot be caught or snagged by parts being removed or
replaced.
IMPORTANT:
reassembly process. Improper cable placement can damage the computer.

Hard drives

Handle hard drives as delicate, precision components, and avoid all physical shock and vibration. This
advice 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 computer.
● Avoid dropping drives from any height onto any surface.
● If you are inserting or removing a hard drive, turn off the computer. Do not remove a hard drive while
the computer 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.
● 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 battery that comes with the computer provides power to the real-time clock and has a minimum
lifetime of approximately three years.
As you remove each subassembly from the computer, place it away from the work area
When servicing this computer, be sure to place cables in their proper location during the
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