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Avaya M770 User’s Guide I
Preface
Important Information
Safety Considerations
These instructions are to be performed by qualified personnel only. To avoid shock,
do not perform any servicing other than that contained in the opening instructions
unless you are qualified to do so.
High Voltage and Energy
Warning: This unit contains high voltage and energies. Disconnect all Power Supply
units from the power line before removing, replacing or adjusting any component
of the backplane.
Disconnect the Power Supply units from the power lines before servicing the
backplane. Any adjustment, maintenance, or repair of the opened instrument under
voltage should be avoided as much as possible. When this is inevitable, the repair
should be carried out only by a skilled person who is aware of the hazard involved.
Capacitors inside the instrument may still be charged even if the instrument has
been disconnected from its source of electricity.
Wiring for National Power Plug
A main power cord with molded IEC socket is supplied with each Power Supply
unit. The specific national standard mains power plug should be wired as follows:
• Brown lead - Live (phase)
• Blue lead - Neutral
• Green/yellow lead - Earth ground
Ventilation
The Avaya M770 hub has air vents on the rear and sides. In order to ensure proper
ventilation and cooling, leave a space of at least 6 cm (2.5 inches) on all sides.
Certification
Avaya certifies that this product met its public specifications at the time of shipment
from the factory.