Powering Up The 7750 Sr-A; Power-Up - Alcatel-Lucent 7750 SR-a4 Installation Manual

Powering Up the 7750 SR-a

Powering Up the 7750 SR-a

Power-Up

126
The 7750 SR-a4 and 7750 SR-a8 do not have a power switch or internal circuit breaker to turn
the power ON or OFF:
• For AC power, power is supplied from an AC power outlet.
• For –48 VDC power, the 7750 SR-a system DC power is supplied by a DC branch
circuit.
Danger:
• You must comply with the general safety precautions and product requirements
Site Preparation on page 47
described in
PSUs on page 91
• Do not power up a 7750 SR-a before verifying that all common equipment (chassis,
power, cooling, and grounding) is connected correctly.
• Always keep your fingers away from rotating fan blades. Do not put your fingers or any
tool in the fan tray if the fans are still spinning.
Warning: For correct thermal operation, ensure that Impedance panels are installed in all
empty slots before powering up the 7750 SR-a.
Note:
• You must complete the procedure
page 94
(for systems using an AC power source) or
a –48 VDC PSU on page 98
Installing Components on page 107
in
initialization procedure.
• The primary copy of the 7750 SR-a TiMOS software is located on the compact flash
memory card that must be installed on the CPM, as described in
CF Card on the CPM-a on page 111
• At power up, the fans initially run at full speed. Thereafter, the control system reduces
the fan speed based on temperature. During normal operation, fans never turn off
completely.
To power-up an AC powered system:
before performing the procedures contained in this chapter.
Installing, Wiring, and Connecting an AC PSU on
(for systems using a DC power source), and the procedures
before proceeding with the power-up and
.
7750 SR-a4 and SR-a8 Installation Guide
and the requirements described in
Installing, Wiring, and Connecting
Installing
Installing the Internal