Sun Microsystems SPARC Enterprise M4000 Installation Manual page 52

During startup, the firmware toggles the front panel LEDs on and off to verify that
each one is working correctly. After that, the front panel LEDs operate as described
in
TABLE A-1
TABLE A-1
Icon
A-12 SPARC Enterprise M4000/M5000 Servers Service Manual • November 2008
.
Operator Panel LEDs
Name Color
POWER LED Green
XSCF Green
STANDBY
LED
CHECK LED Amber
Power switch
Mode switch
(keyswitch)
Description
Indicates the server power status.
• On: Server has power.
• Off: Server is without power.
• Blinking: The power-off sequence is in progress.
Indicates the readiness of the XSCF.
• On: XSCF unit is functioning normally.
• Off: XSCF unit is stopped.
• Blinking: Under system initialization after NFB on,
or under system power-on process.
Indicates that server detected a fault.
• On: Error detected that disables the startup.
• Off: Normal, or the breaker is off (power failure).
• Blinking: Indicates the position of fault.
Switch to direct server power on/power off.
The Locked setting:
• Normal key position. Power on is available with the
Power switch, but power off is not.
• Disables the Power switch to prevent unauthorized
users from powering the server on or off.
• The Locked position is the recommended setting for
normal day-to-day operations.
The Service setting:
• Service should be provided at this position.
• Power on and off is available with Power switch.
• The key cannot be pulled out at this position.