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Introduction
2
Hard Disk Drive
The distance between the head and disk that read and write
data on the hard disk drive (hereinafter known as the HDD)
is a miniscule 0.02µm. Vibrations and physical shocks to the
HDD may therefore result in the head coming into contact
with the disk, producing dents and scratches to its surface.
This will consequently prevent data from being read, and will
result in disk crashes if use is continued. It is therefore
necessary to handle the recorder with great care.
■ Installation and Changing the Location of Installation
• Do not move the recorder or commence the installation
process when the power is turned on or immediately
after the power has been switched off (for approximately
one minute) under any circumstances. (The HDD will
continue to rotate due to inertia for a few moments after
the power has been switched off, and vibrations or
physical shocks will result in damage.)
• Wrap the recorder in protecting packing to prevent
physical shocks.
■ Handling
• Handle this equipment with care. Do not subject it to
physical shock.
• Do not unplug the power cord during recording or
playback, or when the HDD is being accessed.
■ It is recommended that an UPS (Uninterruptible
Power Supply) is used when installing additional
external hard disk drives to make sure the system
remains stable.
■ If a power failure occurs while using utilities,
operation of the equipment may be disabled even if it
is connected to the UPS.
■ Please note that we will not provide compensation
for any failure during recording or playback due to
defects in this equipment or the hard disk drive.
■ Please note that recorded images will be erased
when replacing hard disks. Note that there are cases
where recorded images may be erased when
software is upgraded.
■ Use only hard disks recommended by JVC and use
only our service to replace hard disks.
Introduction
Introduction
Consumable Item
■ The hard disk is a consumable item. Replacement is
recommended after 10000 hours of use (if use in a 25°C
environment). For information on maintenance planning
and costs, consult your nearest JVC dealer.
■ The fan motor is a consumable item. Replacement is
recommended after 30000 hours of use (if use in a 25°C
environment). For information on maintenance planning
and costs, consult your nearest JVC dealer.
How to Read The Instructions
■ About the VR-N900U document
The two documents shown below are available.
(1) STARTUP GUIDE
A STARTUP GUIDE booklet is bundled with VR-
N900U. Also, a STARTUP GUIDE is available as a
PDF file which is on the CD-ROM.
(2) INSTRUCTIONS (This PDF)
The INSTRUCTIONS is available as a PDF file which
is on the CD-ROM.
■ How to Read the Symbols
CAUTION Indicates points to note when operating the
recorder.
Note Indicates useful information, such as
features and restrictions on use.
☞
Indicates a reference page or reference
item.
■ Contents of this Manual
● The contents of this manual are the copyright of JVC.
They may not be reproduced in part or in whole
without the permission of JVC.
● All product names stated in this manual are
trademarks or registered trademarks of their
respective companies. Marks such as ™, ® and © are
omitted in this manual.
● Milestone and XProtect Enterprise are registered
trademarks of Milestone Systems.
● Designs, specifications and other contents of this
manual are subject to change without prior notice.