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12 System Features
Front panel board
The front panel board supports the LEDs and buttons accessible from the front
panel. The buttons and LEDs on the front panel board are shown and
described below.
Power LED glows green whenever the system is turned on. The LED also
flashes when the system is in sleep mode.
Disk activity LED glows green whenever a hard drive is actively reading or
writing data.
System fault LED (yellow) indicates ECC memory system fault (steady
indicates an uncorrectable ECC fault and blinking indicates a correctable ECC
fault).
PS 1 status LED glows green when the first power supply module in the
redundant power supply is installed and working correctly. It flashes green if
the power supply module fails or one of its power levels goes out of bounds.
If the power supply module is not installed, this LED is off.
Power LED
Disk activity LED
System fault LED
System reset button
Power button
PS 1 status LED
PS 2 status LED
Power supply alarm
speakerreset/Systemfault
LED reset switch
Front panel connector
Chassis intrusion detection switch
NMI button
8508366.book Page 12 Tuesday, October 23, 2001 11:29 AM