IBM eServer 232 xSeries Installation Manual page 36

Power-control button shield: You can install this circular disk over the power-control
button to prevent accidental manual power-off. This disk is provided with your server.
Power-control button: Press this button to manually turn the server on or off.
Reset button: Press this button to reset the server and run the power-on self-test
(POST). You might need to use a pen or the end of a straighten paper clip to press the
button.
Hard disk drive status light: Each of the hot-swap drives has a hard disk drive
status light. When this amber light is on continuously, the drive has failed.
If a ServeRAID adapter is installed and this light flashes slowly (one flash per
second), the drive is being rebuilt. When the light flashes rapidly (three flashes per
second), the controller is identifying the drive.
Hard disk drive activity light: Each of the hot-swap drives has a hard disk drive light.
When this green light is flashing, the controller is accessing the drive.
Serial number: This number uniquely identifies your server.
Rear view
(tower shown)
AC power light: This light provides status information about the power supply.
During typical operation, the ac power LEDs is on.
DC power light: This light provides status information about the power supply.
During typical operation, the dc power LEDs is on.
Note: If the 385-watt power supply LED is flashing, the system overloads and the
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IBM xSeries 232: Installation Guide
power supply will shut down.
DC power
LED (green)
AC power
LED (green)
DC power
LED (green)
AC power
LED (green)
DC AC
GOOD GOOD