User's Guide

6
Precautions for safety
Observe the precautions for safety described in this section. The Blade Enclosure
(SIGMABLADE-Hv2) on which this device is installed has power units. Carefully use them to
avoid any electric shock.
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General precautions
Do not use the device in an operation where human lives are involved or high
reliability is required.
This device is not intended for using in controlling or using with facilities or systems where
human lives are involved or high reliability is required, including medical devices or
nuclear, aerospace, transportation, and traffic control facilities. NEC assumes no liability
for any accidents or damage to physical assets resulting from the use of this equipment in
such systems or facilities.
Do not disassemble, repair, or alter the device.
Unless described herein, never attempt to disassemble, repair, or alter the device.
There is a risk of an electric shock or fire as well as malfunction.
Do not continue to use the device if any smoke, odor, or noises are detected.
If the device emits smoke, odor, or noise, immediately turn off the POWER switch, unplug
the cords, and contact your sales representative. 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 install or remove multiple CPU blades simultaneously.
Install or remove one CPU blade at a time. If you install or remove two or more CPU blade,
or install a CPU blade while the cover of another slot is removed, there is a risk of an
electric shock.
Do not look into the optical disk drive.
A laser beam used in the optical disk is harmful to the eyes. Do not look into or insert a
mirror into the drive while the drive is powered. If a laser beam is caught in your eyes, you
may lose your eyesight. Note that the laser beam is invisible.