NF HVA4321, Instruction Manual

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HVA4321
iii
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Do not remove the cover.
This product contains high-voltage parts. Absolutely never remove its cover. Even when the inside of this
product needs to be inspected, do not touch the inside.
All such inspections are to be performed by service technicians designated by NF Corporation.
Do not modify this product.
Absolutely never modify this product, as this may cause new hazards and may disqualify this product
from repair in case of failure.
Safety-related symbols
The general definitions of the safety-related symbols used on this product and in the instruction manual
are provided below.
Instruction manual reference symbol
This symbol is displayed to alert the user to potential danger and refer him/her to
the instruction manual.
Electric shock danger symbol
This symbol indicates locations that present a risk of electric shock under specific
conditions.
Protective terminal grounding symbol
This symbol indicates terminals that require grounding to prevent electric shock.
Before operation of the unit, be sure to connect this terminal to the ground of type
3 or higher. (When the 3-pin power cable is connected to the 3-pin outlet, it is not
necessary to connect this ground terminal.)
Warning Symbol
This symbol indicates information for avoiding danger to human life or bodily
injury such as electric shock while handling this product.
Caution Symbol
This symbol indicates information for preventing damage to the product when
handling it.
Other symbols
This symbol indicates the "ON" position of the power switch.
This symbol indicates the "OFF" position of the power switch.
This symbol indicates that the external conductor of the connector is connected to the
case.
This symbol indicates that the external conductor of the connector is connected to the
signal ground.
CAUTION
WARNING