NEC N8141-75F, User Manual

Page: 18 / 107

- xvi -
Cleaning and Working with Internal Devices
WARNING
Do not disassemble, repair, or alter the Device Expansion Unit.
Do not attempt to disassemble, repair, or alter the Device Expansion Unit on
any occasion other than described in this User's Guide. Failure to follow this
instruction may cause malfunctions of the Device Expansion Unit but also an
electric shock or fire.
Disconnect the power plug before cleaning the Device Expansion Unit.
Make sure to power off the Device Expansion Unit and disconnect the power
plug from a power outlet before cleaning or installing/removing option boards.
Touching any internal device of the Device Expansion Unit with its power cord
connected to a power source may cause an electric shock or a fire due to short
circuit even if the Device Expansion Unit is powered off.
Also, 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.
CAUTION
High temperature
Immediately after the Device Expansion Unit is powered off, its internal
components such as hard disk drives are very hot. Leave them until their
internal components fully cool down before installing/removing any component.
Make sure to complete cable and option installations.
Always install the power cable, interface cable, and option boards firmly. An
incomplete installation may cause a contact failure, resulting in smoking or fire.
The Device Expansion Unit contains some components that are only good for a
limited period of time and require replacement, such as the internal fan module
and power unit. For stable operation of the Device Expansion Unit, NEC
recommends you replace these components on a regular basis. Consult with
your sales agent for replacement or the product lives.