Technical data

Controls and Indicators
6-3
6
The Reset (▲) position supplies a SYSRESET signal to the backplane
to reset the system in the event of a malfunction. Reset (▲) is a
momentary-contact setting that is available only when the key is
inserted in the switch.
3-Slot Indicators
Indicators to display the status of input power, operating voltages,
and interior temperatures are located on the front panel of the
power supply module.
❏ The Input Power LED ( ) indicates the presence of input
power to the power supply. Under normal conditions, the
Input Power LED is illuminated. If the LED is off, and input
power is applied, the power supply may be defective or the
input power may be too low.
❏ The System Power Status LED ( ) monitors the operating
voltages at the chassis backplane. Under normal conditions,
the LED is illuminated. If the LED is off, the power supply
may be defective or the system power has strayed from the
acceptable range.
❏ The Overtemperature LED ( ) indicates the presence of
excessive operating temperatures within the power supply,
the card cage (if an optional backplane thermal sensor is
installed), or the SCSI peripheral expansion enclosure (if
installed).
Dual 9-, 12-, and 20-slot Indicators
Several indicators to display the status of input power, operating
voltages, and interior temperatures are located on the front panel of
the card cage and power supply.
❏ The system power fault LED (on the front of the bezel --
designated with a broken lightbulb symbol) indicates a defect
in the +5Vdc, +12Vdc, or -12Vdc operating voltages at the