Hitachi GR4000 Series Quick Start Manual page 15

Do not look into the optical outlet/inlet ports directly.
The GR4000 or GS4000 contains a lithium battery for the real-time clock.
Mishandling this battery may cause overheating, damage, or in an extreme case,
explosion or fire. Do not remove the battery, attempt to disassemble it, or expose it
to temperatures of over 100°C (212°F). Also, do not incinerate or dispose of this
battery in water.
Remove dust on or around the device regularly. Accumulated dust can choke off
ventilation to components, causes fans to fail, and could cause a fire or an electric
shock.
Once the device is powered up, an inrush of electrical current occurs. Do not
operate this device during a reduced voltage condition (brownout). Similarly, do not
allow the voltage of a power facility under your control to decrease. A brownout
condition also affects the other equipment besides the GR4000 or GS4000 if
connected to the same power facility.
Before attaching or detaching a power cable, make sure that the switch of the
targeted power unit is turned OFF.
When replacing a fan unit while powered on, it must be done within one minute
after being detached. If replacement takes more than one minute, the temperature
inside the device will start to rise and could affect other components.
When carrying or packing the device and its optional units, wear a wrist strap to
prevent static electricity. Without a wrist strap, the device might be damaged by
static electricity.
When installing a packet routing (switching) unit into the device, open its levers as
shown in the figure below. If you try to install it with its levers closed or open too
wide, the levers could be damaged when being inserted into the slot.
Levers
When carrying or packing optional units, such as NIFs, BCUs, PRUs, PSUs, memory
modules, memory cards, and power supplies, do not touch the electronic
components or circuitry on the solder side. To avoid damage, always store these
boards and components in approved anti-static bags.
Do not put objects on a packet routing (switching) unit. Doing this might deform the
outer frame of a packet routing (switching) unit Comply with the instructions
written on the label put on a packet routing (switching) unit . (See below.)
QSGGR4K00-10 5794047-1X
Label i Yellow j
CLASS1 LASER PRODUCT
GR4000 Quick Start Guide, Revision 1 - Preliminary
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