IBM xSeries 236 8841, User Manual

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System power-on LED: When this LED is lit and not flashing, it indicates that
the server is turned on. When this LED is flashing, it indicates that the server is
turned off and still connected to an ac power source. When this LED is off, it
indicates that ac power is not present, or the power supply or the LED itself has
failed. A power LED is also on the rear of the server.
v
OK LED: This green LED is lit only when the Front Panel LED test is performed
by the Enhanced Diagnostics.
v Hard disk drive activity LED: When this green LED is flashing rapidly it
indicates that there is activity on a hard disk drive.
v
System-information LED: When this amber LED is on, the server power
supplies are nonredundant, or some other noncritical event has occurred. The
event is recorded in the error log. Check the light path diagnostic panel for more
information (see the “Light path diagnostics” on page 93.
v System-error LED: When this amber LED is lit it indicates that a system error
has occurred. Use the diagnostic LED panel and the system service label on the
inside of the left-side cover to further isolate the error. See “Light path
diagnostics” on page 93 for additional information.
v
System locator LED: Use this LED to visually locate the server among other
servers. You can use IBM Director to light this LED remotely.
v
Ethernet transmit/receive activity LED (Tx/Rx 1 or Tx/Rx 2): When these two
green LEDs are lit they indicate that there is activity between the server and the
network.
USB 3 connector: Connect a USB device to this connector.
Diskette-eject button: Press this button to release a diskette from the diskette
drive.
Diskette drive activity LED: When this LED is lit, it indicates that the diskette drive
is in use.
Hard disk drive activity LED: When this LED is flashing, it indicates that the
associated hard disk drive is in use.
Hard disk drive status LED: When this LED is lit, it indicates that the associated
hard disk drive has failed. If an optional RAID adapter is installed in the server and
the LED flashes slowly (one flash per second), the drive is being rebuilt. If the LED
flashes rapidly (three flashes per second), the controller is identifying the drive.
Reset button: Press this button to reset the server and run the power-on self-test
(POST). You might have to use a pen or the end of a straightened paper clip to
press the button.
Power-control button: Press this button to turn the server on and off manually. A
power-control-button shield comes with the server. You can install this disk-shaped
shield to prevent the server from being turned off accidentally.
Power-control-button shield: You can install this circular disk over the
power-control button to prevent the server from being turned off accidently.
CD-ROM drive activity LED: When this LED is lit, it indicates that the CD-ROM
drive is in use.
CD-eject button: Press this button to release a CD from the CD-ROM drive.
Chapter 1. General information
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