Lenovo RackSwitch G8052, Installation Manual

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© Copyright 2015 Lenovo Chapter 2: Switch Components
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Using redundant power can minimize the power disruption during a power supply
failure and extend the expected lifetime of each power supply by operating normally
in a conservative power mode.
For proper airflow when operating the switch with only one power supply module,
the empty power supply bay must be protected by a blank cover module.
There is no power switch on the G8052 power modules; the switch powers up when
power is supplied through the power cord to one or both power supplies.
Power LEDs
On the front of the switch, the Power LED on the management panel indicates the
general status of the power supplies. The LED flashes when only one power cord is
connected, and is steady when both power cords are connected (see “System
Status LEDs” on page 22 ).
Additional LED indicators are located on the rear panel of the switch, on the
individual power supply modules. The following table describes the power supply
module LED behavior.
Table 8. Power supply module status LED behavior
LED State Functional Meaning
Service ( ! ) Amber Power supply failure.
Off Power supply is operational.
OK Green DC output power is present.
Off DC output power is OK.
AC Green AC power is OK.
Off No power. Output is disabled, or input
power is outside operating range.