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HP Z840 Safety & Comfort Guide User Guide - Page 3

Introduction, International Standard for Safety of Information Technology Equipment IEC 60950.

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Introduction This guide describes proper workstation setup, posture, and health and work habits for computer users at work, at home, at school, and on the go. In addition, this guide contains electrical and mechanical safety information applicable to all HP products. Also available at www.hp.com/ergo WARNING! Avoid excessive heat build-up with your notebook. To reduce the possibility of heat-related injuries or of overheating the notebook computer, do not place the computer directly on your lap or obstruct the computer air vents. Use the computer only on a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft surface, such as pillows or rugs or clothing, to block airflow. Also, do not allow the AC adapter to contact the skin or a soft surface, such as pillows or rugs or clothing, during operation. The computer and the AC adapter comply with the user-accessible surface temperature limits defined by the International Standard for Safety of Information Technology Equipment (IEC 60950). WARNING! Be aware of pain or discomfort. Read and follow the recommendations in this Safety & Comfort Guide to minimize the risk of pain and discomfort and to increase your comfort. iii

Section	Page
Let comfort be your guide	9
Scan for awkwardness and adjust for comfort	9
Adopt healthy habits	10
Comfortable computing for children	10
Adjusting your chair	11
Let the comfort of your feet, legs, back and shoulders be your guide	11
Move often	13
Adjusting your work surface	14
Let the comfort of your shoulders, arms and hands be your guide	14
When typing, pointing and touching, scan your hands and fingers for tension	15
Adjusting your monitor	17
Scan your head, neck and torso for comfort	17
Adjusting dual monitors	20
Using touch technology	21
Using a touch-enabled monitor and all-in-one product	21
Using a touch-enabled tablet	23
Using a Notebook	25
Listen to your body especially when using a notebook	25
Carefully monitoring children using computers	26
A special note for parents and teachers	26
Monitoring your health habits and exercise	27
Monitoring personal tolerance levels and limits	27
Cultivating your health and fitness	27
Electrical and mechanical safety	28
Product safety policy and general practice	28
Installation requirements	29
General precautions for HP products	29
Damage requiring service	29
Servicing	29
Mounting accessories	30
Ventilation	30
Water and moisture	30
Grounded (earthed) products	30
Power sources	30
Accessibility	30
Voltage select switch	30
Internal battery	30
Power cords	30
Protective attachment plug	31
Extension cord	31
Overloading	31
Cleaning	31
Heat	31
Circulation and cooling	31
Replacement parts	31
Safety check	31
Options and upgrades	31
Hot surfaces	32
Object entry	32
Precautions for portable computer products	32
Monitor support cover	32
Rechargeable battery pack	32
Docking base	32
Precautions for server and network products	32
Safety interlocks and enclosures	32
Accessories and options	33
Products with casters	33
Floor-standing products	33
Rack-mountable products	33
Precautions for products with hot-pluggable power supplies	33
Precautions for products with external television antenna connectors	34
Compatibility	34
External television antenna grounding	34
Lightning protection	34
Power lines	34
Antenna grounding	34
Precautions for products with modems, telecommunications, or local area network options	35
Precautions for products with laser devices	35
Laser safety warnings	35
Compliance with CDRH regulations	35
Compliance with international regulations	36
Laser product label	36
Symbols on equipment	36
More information	38

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Introduction

This guide describes proper workstation setup, posture, and health and work habits for computer

users at work, at home, at school, and on the go. In addition, this guide contains electrical and

mechanical safety information applicable to all HP products.

Also available at

www.hp.com/

ergo

WARNING!

Avoid excessive heat build-up with your notebook.

To reduce the possibility of heat-related injuries or of overheating the notebook computer, do not

place the computer directly on your lap or obstruct the computer air vents. Use the computer only on

a hard, flat surface. Do not allow another hard surface, such as an adjoining optional printer, or a soft

surface, such as pillows or rugs or clothing, to block airflow. Also, do not allow the AC adapter to

contact the skin or a soft surface, such as pillows or rugs or clothing, during operation. The computer

and the AC adapter comply with the user-accessible surface temperature limits defined by the

International Standard for Safety of Information Technology Equipment (IEC 60950).

WARNING!

Be aware of pain or discomfort

Read and follow the recommendations in this

Safety & Comfort Guide

to minimize the risk of pain and

discomfort and to increase your comfort.

iii