NEC Express5800-320Fc User's Guide
NEC Express5800 Series
N8800-103F, EXP320HR
NEC Express5800/320Fc-LR/MR
User's Guide
N8800-103F, EXP320HR
NEC Express5800/320Fc-LR/MR
User's Guide
1st Edition
7-2007
856-126614-901- A
PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is the
valuable property of NEC Corporation (NEC) and /or its licensors. NEC and/or its licensors, as
appropriate, reserve all patent, copyright and other proprietary rights to this document, including all
design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are
expressly granted to others.
The NEC product(s) discussed in this document are warranted in accordance with the terms of the
Warranty Statement accompanying each product. However, actual performance of each such
product is dependent upon factors such as system configuration, customer data, and operator
control. Since customer’s implementation of each product may vary, the suitability of specific
product configurations and applications must be determined by the customer and is not warranted
by NEC.
To allow for design and specification improvements, the information in this document is subject to
change at any time, without notice. Reproduction of this document or portions thereof without prior
written approval of NEC is prohibited.
Copyright 2007
NEC Corporation of America
Keep this User's Guide handy for quick reference when necessary.
SAFETY INDICATIONS
To use the NEC Express5800 series safely, follow the instructions in this User's Guide.
This guide explains components that pose a danger, types of dangers, and actions taken to prevent
them; such components are labeled warning.
This guide and warning labels use “WARNING” and “CAUTION” to indicate a danger depending on
the degree. These terms are defined as follows:
Indicates a danger that could lead to a death or serious injury.
CAUTION
Indicates a danger that could lead to a burn, other injuries or damage to
physical assets.
This guide uses the following three types of symbols to give indications and precautions against a
danger. They are defined as follows:
Indicates that there is a risk of danger. Each image symbolizes a particular type of
danger. (Attention)
Indicates what you must not do. Each image symbolizes a particular type of
prohibition. (Prohibited actions)
Indicates what you must do. Each image symbolizes a particular type of action
necessary to avoid a danger. (Mandatory actions)
(Example)
Symbol to draw attention
Term indicating a degree of danger
CAUTION
High temperature.
Immediately after power-off, system components such as hard disks are very
hot. Wait for the server to cool down completely before adding/removing
components.
Symbol indicating a prohibited
action (may not always be
indicated)
Description of a danger
WARNING
SYMBOLS USED IN THIS USER'S GUIDE AND WARNING LABELS
Attention
Indicates a risk of an electric shock.
Indicates a risk of a personal injury due to heat.
Indicates a risk of catching your fingers.
Indicates a risk of a fire or smoke.
Indicates a general precaution or warning that is not defined herein.
Indicates a risk of losing eyesight due to laser beam.
Indicates a risk of an explosion.
Indicates a risk of a personal injury.
Prohibited actions
Indicates a general prohibition that is not defined herein.
Do no touch the indicated area. There is a risk of an electric shock or fire.
Do not touch with wet hands. There is a risk of an electric shock.
Keep from flame. There is a risk of a fire.
Avoid using water or liquid nearby. If it spills on the equipment, there is a risk of an
electric shock or fire.
Do not disassemble, repair, or modify the equipment. There is a risk of an electric
shock or fire.
Mandatory actions
Unplug the server. There is a risk of an electric shock or fire.
Indicates a general action to take that is not defined herein. Make sure to follow the
instructions.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
This class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numériqeu de la classe A respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.
This system is classified as a CLASS 1 LASER PRODUCT. This label id located on
the internal DVD-ROM installed in your system.
NOTE: This product provides resistance against hardware faults with its redundant hardware
modules. However, this does not mean complete fault-tolerance is assured. For example,
there is a risk of system down when:
– A fatal fault occurs in software.
– Both modules within a redundant hardware pair break down.
– A fatal fault occurs in a non-redundant component, such as the clock generator circuitry
or the interconnect backplane.
– The entire system is cut off from AC power.
CLASS 1
LASER PROD UCT
Trademarks and Patents
NEC EXPRESSBUILDER and NEC ESMPRO are trademarks of NEC Corporation.
Microsoft, and Windows are registered trademarks of Microsoft Corporation in the United States
and other countries.
All other product, brand, or trade names used in this publication are the trademarks or registered
trademarks of their respective trademark owners.
Microsoft Windows Server 2003 R2 Standard x64 Edition operating system, Microsoft Windows
Server 2003 R2 Enterprise x64 Edition operating system, Microsoft Windows Server 2003 Standard
x64 Edition operating system, and Microsoft Windows Server 2003 Enterprise x64 Edition
operating system are called Windows Server x64 Edition for short.
Microsoft Windows Server 2003 R2 32-bit Standard Edition operating system, Microsoft Windows
Server 2003 R2 32-bit Enterprise Edition operating system, Microsoft Windows Server 2003
Standard Edition operating system and Microsoft Windows Server 2003 Enterprise Edition
operating system are called Windows Server 2003 for short. Microsoft Windows 2000 Server
operating system, Microsoft Windows 2000 Advanced Server operating system and Microsoft
Windows 2000 Professional operating system are called Windows 2000 for short. Microsoft
Windows Vista Business operating system is called Windows Vista for short. Microsoft Windows
XP Professional x64 Edition operating system is called Windows XP x64 Edition for short.
Microsoft Windows XP Home Edition operating system and Microsoft Windows XP Professional
operating system is called Windows XP for short. Microsoft Windows NT Server network operating
system version 3.51/4.0 and Microsoft Windows NT Workstation operating system version 3.51/4.0
are called Windows NT for short. Microsoft Windows Millennium Edition Operating System is
called Windows Me for short. Microsoft Windows 98 operating system is called Windows 98 for
short. Microsoft Windows 95 operating system is called Windows 95 for short.
Names used with sample applications are all fictitious. They are unrelated to any existing product
names, names of organizations, or individual names.
To prevent voltage sag:
This product may be affected by voltage sag caused by lightning. To prevent voltage sag, you are
recommended to use an AC uninterruptible power supply (UPS) unit.
i
Notes:
(1) No part of this manual may be reproduced in any form without prior written permission of
NEC Corporation.
(2) The contents of this manual are subject to change without prior notice.
(3) The contents of this manual shall not be copied or altered without prior written permission of
NEC Corporation.
(4) All efforts have been made to ensure the accuracy of all information in this manual. If you find
any part unclear, incorrect, or omitted in this manual, contact the sales agent where you
purchased this product.
(5) NEC assumes no liability arising from the use of this product, nor any liability for incidental or
consequential damage arising from the use of this manual regardless of (4) above.
© NEC Corporation 2007
ii
PREFACE
Welcome to the NEC Express5800/320Fc series.
NEC Express5800/320Fc series is a “fault-tolerant (ft)” server focusing on “high reliability” in terms
of fault-tolerance, in addition to “high performance,” “scalability,” and “general versatility” provided
by NEC Express5800 series. In the event of trouble, its dual configuration will allow the system to
instantaneously isolate the failed parts to assure non-stop running; operation will be moved
smoothly from one module to the other, minimizing damage to it. Youcan use this NEC
Express5800/320Fc series in a mission-critical system where high availability is required. By the use
of Windows Server 2003 operating system, it also provides outstanding openness for general-purpose
applications, etc.
To make the best use of these features, read this User's Guide thoroughly to understand how to
operate the NEC Express5800/320Fc series.
iii
ABOUT THIS USER'S GUIDE
This User's Guide helps a user to properly setup and use the product.
Consult this guide to ensure safety as well as to cope with trouble during a system setup and daily
operation.
Keep this manual handy.
This User's Guide is intended for users who have a good knowledge on the basic use of Windows
operating systems and general I/O devices such as a keyboard and mouse.
How to Use This User's Guide
This guide consists of seven chapters and appendices. To help you find a solution quickly, the guide
contains the following information:
For descriptions on setting up this product, see the separate volume “User’s Guide (Setup).”
Read “Precautions for Use” first.
Before going on to main chapters, be sure to read “Precautions for Use.” These precautions are very
important for using the product safely.
Chapter 1 Precautions for Use
This chapter describes precautions necessary to use the product safely and properly. Be
sure to read this chapter before using the product. It also provides information on user
support. It will be helpful when you need maintenance service, support, etc.
Chapter 2 General Description
This chapter describes what you should know about the product: its component names,
functions, operating procedures as well as handling of devices and other parts.
Chapter 3 Windows Setup and Operation
This chapter describes setup and operation specific to the product when it is on
Windows.
Chapter 4 System Configuration
This chapter describes how to make settings of built-in basic input/output system. It also
describes factory-shipped parameters.
Chapter 5 Installing and Using Utilities
This chapter describes features and operating procedures of a standard utility “NEC
EXPRESSBUILDER.” It also describes procedures to install and operate various
software programs contained in its CD-ROM.
Chapter 6 Maintenance
This chapter describes maintenance procedures and use of maintenance tools. If you
need to move the product for maintenance purposes, follow the steps provided in this
chapter.
Chapter 7 Troubleshooting
If the product does not work properly, see this chapter before deciding that it is a
breakdown.
Chapter 8 System Upgrade
This chapter describes procedures to add options and precautions. See also this chapter
when you replace failed components.
Appendix A Specifications
This appendix lists specifications of the product.
Appendix B I/O Port Addresses
This appendix lists factory-assigned I/O port addresses.
iv
Additional symbols
The following symbols are used throughout this User's Guide in addition to the caution symbols
describe at the beginning.
IMPORTANT:
Important points or instructions to keep in mind when using the
server or software
CHECK:
Something you need to make sure of when using the server of
software
TIPS:
Helpful information, something useful to know
Accessories
This product is shipped with various accessories. See the packing list to make sure everything is
included and check the individual items. If any component is missing or damaged, contact your
sales agent.
Keep the accessories in a safe place. You will need them when you perform setup,
addition of options, or replacement of failed components.
To check NEC EXPRESSBUILDER components, see the attached list.
Be sure to fill out and mail the software registration card that is attached to your operating
system.
Make backup copies of included floppy disks, if any. Keep the original disks as the master
disks; use these copies in operation.
Improper use of an included floppy disk or CD-ROM may alter your system environment.
If you find something unclear, stop and contact your sales agent.
v
CONTENTS
PREFACE....................................................................................................................................ii
ABOUT THIS USER'S GUIDE.................................................................................................iii
vi
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1Chapter 1
Precautions for Use
This chapter includes information necessary for the proper and safe operation of the server.
1-2 Precautions for Use
WARNING LABELS
Warning labels are placed in certain parts of the system so that the user stays alert to possible risks
(Do not remove or damage these labels). If some label is missing, about to peel off, or illegible,
contact your sales agent.
The following pictures show the places where the labels are placed.
Front of device
Inside of device
Precautions for Use 1-3
PRECAUTIONS FOR SAFETY
This section provides precautions for using the server safely. Read this section carefully to ensure
proper and safe use of the server. For symbol meanings, see "SAFETY INDICATIONS" described
in the previous section.
General
WARNING
Do not continue to use the equipment if you detect smoke, odor, or noise.
If the equipment emits smoke, odor, or noise, immediately flip off the POWER
switch, unplug the cord, and contact your sales agent. There is a risk of a fire.
Do not insert a wire or metal object.
Do not insert a wire or metal objects into a vent or disk drive slot. There is a risk
of an electric shock.
Do not use the equipment in an unsuitable place.
Do not install a server rack in an unsuitable environment.
Other systems also may be affected, and the rack may fall over to cause a fire
or injuries. For details about installation environment and quake-resistant
engineering, see the attached manual or contact your sales agent.
CAUTI ON
Prevent water or foreign objects from getting into the equipment.
Do not let water or foreign objects (e.g., pins or paper clips) enter the
equipment. There is a risk of a fire, electric shock, and breakdown. When such
things accidentally enter the equipment, immediately turn off the power and
unplug the cord. Contact your sales agent instead of trying to disassemble it
yourself.
CAUTION
1-4 Precautions for Use
Use of Power Supply and Power Cord
WARNING
Do not handle a power plug with a wet hand.
Do not plug/unplug a power cord with a wet hand. There is a risk of an electric
shock.
Do not connect the ground wire to a gas pipe.
Never connect the ground wire to a gas pipe. There is a risk of a gas explosion.
CAUTION
Do not plug the attached cord in a nonconforming outlet.
Use a wall outlet with specified voltage and power type. There is a risk of a fire
or current leakage.
Avoid installing the equipment where you may need an extension cord. If the
cord that does not meet the power specifications, there is a risk of overheating
that could lead to a fire.
Do not plug too many cords in a single outlet.
If the rated current is exceeded, there is a risk of overheating that could lead to
a fire.
Do not plug the cord insecurely.
Insert the plug firmly into an outlet. There is a risk of heat or fire due to poor
contact. If dust settles on the slots and it absorbs moisture, there is also a risk
of heat or fire.
Do not use nonconforming power cords.
AC cord is to spend the thing of the next specifications.
You also have to observe the following prohibitions about handling and
connecting interface cables.
Do not pull on the cord.
Do not pinch the cord.
Do not bend the cord.
Keep chemicals away from the cord.
Do not twist the cord.
Do not tread on the cord.
Do not place any object on the cord.
Do not use cords as bundled.
Do not alter, modify, or repair the cord.
Do not staple the cord.
Do not use any damaged cord. (Replace it with a new one of the same
specifications. For replacement procedures, contact your sales agent.)
Precautions for Use 1-5
Installation, Relocation, Storage and Connection
WARNING
Disconnect the power cord(s) before installing or removing the equipment.
Be sure to power off the equipment and unplug its power cords from the wall
outlet before installation/relocation. All voltage is removed only when the power
cords are unplugged.
CAUTION
Do not install or store the equipment in an unsuitable place.
Install or store the equipment in such a place as specified in this User's Guide.
Avoid the following, or there is a risk of a fire.
a dusty place
a humid place located near a boiler, etc
a place exposed to direct sunlight
an unstable place
Be careful not to hurt your fingers.
Exercise great care not to hurt your fingers on the rail when you
mount/dismount the equipment into/from the rack.
Do not use or store this product in a corrosive environment.
Avoid the usage or storage of this product in an environment which may be
exposed to corrosive gases, such as those including but not limited to:
sulfur dioxide, hydrogen sulfide, nitrogen dioxide, chlorine, ammonia and/or
ozone.
Avoid installing this product in a dusty environment or one that may be exposed
to corrosive materials such as sodium chloride and/or sulfur.
Avoid installing this product in an environment which may have excessive metal
flakes or conductive particles in the air.
Such environments may cause corrosion or short circuits within this product,
resulting in not only damage to this product, but may even lead to be a fire
hazard.
If there are any concerns regarding the environment at the planned site of
installation or storage, please contact your sales agent.
1-6 Precautions for Use
CAUTION
Do not connect any interface cable with the power cord of the server plugged to
a power source.
Make sure to power off the server and unplug the power cord from a power
outlet before installing/removing any optional internal device or
connecting/disconnecting any interface cable to/from the server. If the server is
powered off but its power cord is plugged to a power source, touching an
internal device, cable, or connector may cause an electric shock or a fire
resulted from a short circuit.
Do not use any non-designated interface cable.
Use only interface cables designated by NEC; identify which component or
connector to attach beforehand. If you use a wrong cable or make a wrong
connection, there is a risk of short-circuit that could lead to a fire.
You also have to observe the following prohibitions about handling and
connecting interface cables:
Do not use any damaged cable connector.
Do not step on the cable.
Do not place any object on the cable.
Do not use the equipment with loose cable connections.
Do not use any damaged cable.
Precautions for Use 1-7
Cleaning and Handling of Internal Devices
WARNING
Do not disassemble, repair, or alter the server.
Unless described herein, never attempt to disassemble, repair, or alter the
equipment. There is a risk of an electric shock or fire as well as malfunction.
Do not look into the DVD-ROM drive.
The DVD-ROM drive uses a laser beam. Do not look or insert a mirror inside
while the system is on. A laser beam is invisible; if your eyes get exposed to it,
there is a risk of losing eyesight.
Do not detach a lithium battery yourself.
This equipment has a lithium battery. Do not detach it yourself. If the battery is
exposed to fire or water, it could explode.
When the lithium battery is running down and the equipment doesn’t work
correctly, contact your sales agent instead of disassembling, replacing or
recharging it yourself.
Disconnect the power plug before cleaning the server.
Make sure to power off the server and disconnect the power plug from a power
outlet before cleaning or installing/removing internal optional devices. Touching
any internal device of the server with its power cord connected to a power
source may cause an electric shock even if the server is off-powered.
Disconnect the power plug from the outlet occasionally and clean the plug with
a dry cloth. Heat will be generated if condensation is formed on a dusty plug,
which may cause a fire.
CAUTI ON
High temperature
Immediately after powering off the system, system components such as hard
disks may be very hot. Wait for the server to cool down completely before
adding/removing components.
Make sure to complete installation.
Firmly install all power cords, interface cables and/or boards. An incompletely
installed component may cause a contact failure, resulting in fire and/or smoke.
CAUTION
1-8 Precautions for Use
CAUTI ON
Protect the unused connectors with the protective cap.
The unused power cord connectors are covered with the protective cap to
prevent short circuits and electrical hazards. When removing the power cord
connector from the internal devices, attach the protective cap to the connector.
Failure to follow this warning may cause a fire or an electric shock.
During Operation
CAUTION
Do not pull out a device during operation.
Do not pull out or remove a device while it works. There is a risk of malfunction
and injuries.
Do not touch the equipment when it thunders.
Unplug the equipment when it threatens to thunder. If it starts to thunder before
you unplug the equipment, do not touch the equipment and cables. There is a
risk of a fire or electric shock.
Keep animals away.
Animal’s waste or hair may get inside the equipment to cause a fire or electric
shock.
Do not place any object on top of the server.
The object may fall off to cause injuries, damage to hardware and/or a fire.
Do not leave the DVD tray ejected.
Dust may get in the equipment to cause a malfunction. The ejected tray may
also become a cause of injuries.
CAUTION
Precautions for Use 1-9
Rack-mount Model
Do not install the equipment on a nonconforming rack.
Install the equipment on a 19-inch rack conforming to the EIA standard. Do not
use the equipment without a rack or install it on a nonconforming rack. The
equipment may not function properly, and there is a risk of damage to physical
assets or injuries. For suitable racks, contact your sales agent.
Do not attempt to install the server yourself.
To avoid a risk of injuries, users should not attempt to install the equipment into
a rack. Installation should be performed by trained maintenance personnel.
< For Maintenance Personnel Only >
Do not install the equipment in such a manner that its weight is imposed on a
single place.
To distribute the weight, attach stabilizers or install two or more racks. It may fall
down to cause injuries.
Do not assemble parts alone.
It takes at least two people to mount doors and trays to a rack. You may drop
some parts to cause a breakage or injuries.
Do not pull a device out of the rack if it is unstable.
Before pulling out a device, make sure that the rack is fixed (by stabilizers or
quake-resistant engineering).
Do not leave two or more devices pulled out from the rack.
If you pull out two or more devices the rack may fall down. You can only pull out
one device at a time.
Do not install excessive wiring.
To prevent burns, fires, and damage to the equipment, make sure that the rated
load of the power branch circuit is not exceeded. For more information on
installation and wiring of power-related facilities, contact your electrician or local
power company.
CAUTION
1-10 Precautions for Use
For Proper Operation
Observe the following instructions for successful operation of the server. Failure to observe them
could lead to a malfunction or breakdown.
Do not use a cellular phone or pager around the equipment. Turn off your cellular phone or
pager when you use the equipment. Their radio waves may cause the equipment to
malfunction.
Perform installation in a place where the system can operate correctly. For details, see the
separate volume “User’s Guide (Setup).”
Before turning off the power or ejecting a disk, make sure that the access LED is off.
When you have just turned off the power, wait at least 30 seconds before turning it on again.
Once you have turned on the server, do not turn it off until the "NEC" logo appears on the
screen.
After plugging in the power cord, do not turn on the power of the equipment for 30 seconds.
For safe operation, it is recommended to reboot the OS after duplication is completed.
Before you move the equipment, turn off the power and unplug the cord.
This server shall not assure reproduction of copy-protected CDs using reproduction equipment
if such disks do not comply with CD standards.
Clean the equipment regularly. (For procedures, see Chapter 6.) Regular cleaning is effective
in preventing various types of trouble.
Lightning may cause voltage sag. As a preventive measure, it is recommended to use a UPS
(uninterruptible power supply).
This equipment does not support the connection through an UPS serial port (RS-232C)
or the control using PowerChutePlus.
Check and adjust the system clock before operation in the following conditions:
- After transporting the equipment
- After storing the equipment
- After the equipment stored under the conditions out of the guranteed environment
conditions (Temperature: 10 to 35°C, Humidity: 20 to 80%).
Check the system clock once in a month. It is recommended to operate the system clock
using a time server (NTP server) if it is installed on the system which requires high level of
time accuracy. If the system clock goes out of alignment remarkably as time goes by, though
the system clock adjustment is performed, contact your sales agent.
When you store the equipment, use the recommended storage environment conditions
(Temperature: -10 to 55°C, Humidity: 20 to 80%, non-condensing).
If the NEC Express5800/320Fc series, the built-in optional devices, and the media set for the
backup devices (tape cartridges) are moved from a cold place to a warm place in a short time,
condensation will occur and cause malfunctions and breakdown when these are used in such
state. In order to protect important stored data and assets, make sure to wait for a sufficient
period of time to use the server or components in the operating environment.
Reference: Length of the time effective at avoiding condensation in winter (more than 10°C
differences between room temperature and atmospheric temperature)
Precautions for Use 1-11
Disk devices: Approximately 2-3 hours
Tape media: Approximately 1 day
Make sure that the optional devices are attachable and connectable to the equipment.
Make sure that your options are compatible with the system. If you attach any incompatible
option, there is a risk of malfunction that could lead to a breakdown.
It is recommended to use NEC's genuine option products. Some competitors’ products are
compatible with this server. However, servicing for trouble or damage resulting from such a
product will be charged even within the warranty period.
1-12 Precautions for Use
DISPOSAL OF EQUIPMENT AND CONSUMABLES
When you dispose of the main unit, hard disk drives, floppy disks, CD-ROMs, optional
boards, etc., you need to observe your local disposal rules. Dispose the attached power cable
along with the equipment to avoid it being used with other equipment.
For details, check your local codes..
IMPORTANT:
For disposal (or replacement) of batteries on the motherboard, consult with your sales
agent.
If data remains on the hard disk, backup data cartridges, floppy disks, or other writable
media (such as CD-R and CD-RW), it could be restored and reused by others. The
customer is responsible for wiping out such data before disposal. You need to exercise
sufficient care to protect privacy and confidential information.
Some of the system components have limited lifetimes (e.g., cooling fans, built-in batteries,
built-in DVD-ROM drive, floppy disk drive and mouse). For stable operation, it is
recommended to replace them regularly. For lifetime of individual components and replacing
procedures, ask your sales agent.
WARNING
Do not detach a lithium battery yourself.
This equipment has a lithium battery. Do not detach it yourself. If the battery is
exposed to fire or water, it could explode.
RISK OF EXPLOSION IF BATTERY IS REPLACED WITH INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS.
When the lithium battery is running down and the equipment doesn’t work
correctly, contact your sales agent instead of disassembling, replacing or
recharging it yourself.
Precautions for Use 1-13
IF SYSTEM TROUBLE IS SUSPECTED
Before sending the equipment for repair, try the following:
1. Check if the power cord and connection cables are attached correctly.
2. See “Error Messages” in Chapter 7 to check if there is a relevant symptom. If yes, follow
measures as instructed.
3. Certain software programs are required for operation of NEC Express5800/320Fc series.
Check if these programs are properly installed.
4. Use a commercially available anti-virus program to check the server.
If the problem isn’t solved by the above actions, stop using the server and consult with your sales
agent. In this case, check LED indications of the server and alarm indications on the display, which
will serve as helpful information at the time of repair.
ABOUT OUR WEB SERVICE
Information on NEC Express5800/320Fc series including modification modules is also available on
our web site, http://www.necam.com/servers/ft/
1-14 Precautions for Use
Ergonomic Advice
Prolonged use of a computer may affect your health. Keep in mind the
following to reduce stresses on your body:
Sit with good posture
Sit on your chair with your back straight. If the desk height is appropriate,
you will slightly look down at the screen and your forearms will be parallel to
the floor. This “good” work posture can minimize muscle tension caused by
sedentary work.
If you sit in a “bad” posture—for example, sit round-shouldered or with you
face too close to the display—you may easily suffer fatigue or have your
eyesight affected.
Adjust the installation angle of Display
Most types of displays allow you to adjust the angle vertically and
horizontally. This adjustment is very important to prevent the reflection of
light as well as to make the screen more comfortable to see. Without this
adjustment, it is difficult to maintain a “good” work posture and may get tired
soon. Be sure to adjust the angle before using the display.
Adjust Brightness and Contrast
Displays allow you to adjust brightness and contrast. Optimum brightness
and contrast vary depending on the individual, age, brightness of the room,
etc; you need to make an adjustment accordingly. If the screen is too bright
or too dark, it is bad for your eyes.
Adjust the installation angle of Keyboard
Some types of keyboards allow you to adjust the angle. If you adjust the
angle to make the keyboard more comfortable to use, you can greatly
reduce stresses on your shoulders, arms, and fingers.
Clean the Equipment
Cleanliness of the equipment is very important not only for reasons of
appearance but also from the viewpoints of function and safety. Especially,
you need to regularly clean the display, which gets unclear due to the
accumulation of dirt.
Take a break when you get tired
If you feel tired, you are recommended to refresh yourself by taking a short
break or doing a light exercise.
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