1.1.1.6 Power Supply Controls and Indicators
To the right of the card cage is the power supply. It provides power to the mass
storage devices, the modules installed in the card cage, and the fans.
To prevent damage due to overheating, the power supply monitors the internal
temperature and the speed of the fans. If the power supply detects overheating
or a fan failure, it will shut down your system.
Power Switch
DC OK Indicator
Over Temperature
Condition Indicator
Fan Failure
Indicator
Power Bus
Connectors
Power Cable
Connector
AC Present Indicator
MLO-004040
Power Switch
— It turns system power on and off. The off position is
indicated by a 0; the on position is indicated by a 1.
The Power switch also functions as the system circuit breaker. In the
event of a power surge, the breaker trips, causing the Power switch to
return to the off position (0). Turning the system on resets the circuit
breaker. If the circuit breaker trips, wait 1 minute before turning the
system back on.
1–16 System Overview
