HP ET115AV HP xw4400 Workstation - Service and Technical Reference Guide - Page 62

Service considerations, Cautions, warnings, and safety precautions

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CAUTION: Observe the following cautions when removing or replacing a processor: - Installing a processor incorrectly can damage the system board. Have an HP authorized reseller or service provider install the processor. If you plan to install it yourself, read all of the instructions carefully before you begin. - Failure to follow the workstation preparation instructions and these result in an improperly installed processor, causing extensive system damage. - Processor socket pins are delicate and bend easily. Use extreme care when placing the processor in the socket. CAUTION: To prevent damage to this system, observe the following Electro Static Discharge (ESD) precautions while performing the system parts removal/replacement procedures: - Work on a static-free mat. - Wear a static strap to ensure that any accumulated electrostatic charge is discharged from your body to the ground. - Create a common ground for the equipment you are working on by connecting the static-free mat, static strap and peripheral units to that piece of equipment. NOTE: HP accessories are for use in HP workstation products. They have been extensively tested for reliability and are manufactured to high quality standards. HP, therefore, warrants only those accessories that are manufactured or sold by HP. Service considerations The following sections discuss service considerations that should be reviewed and practiced before removing and replacing any system components. WARNING! When lifting or moving the workstation, do not use the front bezel as a handle or lifting point. Lifting the workstation from the front bezel or lifting it incorrectly can cause the unit to fall and harm you and damage the workstation. To properly and safely lift the workstation, lift it from the bottom of the unit. Cautions, warnings, and safety precautions For your safety, review the cautions, warnings, and safety precautions before accessing the workstation components. Also, review the Safety and Regulatory Guide that came with your workstation for more information. Electrostatic discharge information A sudden discharge of static electricity from your finger or other conductor can destroy static-sensitive devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to electrostatic discharge (ESD) might not appear to be affected at all and can function normally for a while, but it has been degraded in the internal layers, reducing its life expectancy. Networks built into many integrated circuits provide some protection, but in many cases, the discharge contains enough power to alter device parameters or melt silicon junctions. Generating static The following table shows that different activities generate different amounts of static electricity. Static electricity increases as humidity decreases. 52 Chapter 4 Removal and replacement procedures ENWW

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CAUTION:
Observe the following cautions when removing or replacing a processor:
— Installing a processor incorrectly can damage the system board. Have an HP authorized reseller or
service provider install the processor. If you plan to install it yourself, read all of the instructions carefully
before you begin.
— Failure to follow the workstation preparation instructions and these result in an improperly installed
processor, causing extensive system damage.
— Processor socket pins are delicate and bend easily. Use extreme care when placing the processor
in the socket.
CAUTION:
To prevent damage to this system, observe the following Electro Static Discharge (ESD)
precautions while performing the system parts removal/replacement procedures:
— Work on a static-free mat.
— Wear a static strap to ensure that any accumulated electrostatic charge is discharged from your body
to the ground.
— Create a common ground for the equipment you are working on by connecting the static-free mat,
static strap and peripheral units to that piece of equipment.
NOTE:
HP accessories are for use in HP workstation products. They have been extensively tested for
reliability and are manufactured to high quality standards. HP, therefore, warrants only those
accessories that are manufactured or sold by HP.
Service considerations
The following sections discuss service considerations that should be reviewed and practiced before
removing and replacing any system components.
WARNING!
When lifting or moving the workstation, do not use the front bezel as a handle or lifting
point. Lifting the workstation from the front bezel or lifting it incorrectly can cause the unit to fall and harm
you and damage the workstation. To properly and safely lift the workstation, lift it from the bottom of the
unit.
Cautions, warnings, and safety precautions
For your safety, review the cautions, warnings, and safety precautions before accessing the workstation
components. Also, review the
Safety and Regulatory Guide
that came with your workstation for more
information.
Electrostatic discharge information
A sudden discharge of static electricity from your finger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic
device exposed to electrostatic discharge (ESD) might not appear to be affected at all and can function
normally for a while, but it has been degraded in the internal layers, reducing its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases, the discharge
contains enough power to alter device parameters or melt silicon junctions.
Generating static
The following table shows that different activities generate different amounts of static electricity. Static
electricity increases as humidity decreases.
52
Chapter 4
Removal and replacement procedures
ENWW