IBM 7383 Installation And Service Manual page 34

v Hard disk drive activity LEDs:
v Hard disk drive status LEDs:
v DVD drive activity LED:
v DVD eject button:
v Light path diagnostics panel:
v Operator information panel:
v Remind button:
v Reset button:
v USB connectors:
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System x3500 M4 Type 7383: Installation and Service Guide
Press this button to turn the server on and off manually.
This LED is used on hot-swap SAS or SATA hard disk drives. Each hot-swap
hard disk drive has an activity LED, and when this LED is flashing, it indicates
that the drive is in use.
This LED is used on hot-swap SAS or SATA hard disk drives. When this LED is
lit, it indicates that the drive has failed. If an optional IBM ServeRAID controller
is installed in the server, when this LED is flashing slowly (one flash per
second), it indicates that the drive is being rebuilt. When the LED is flashing
rapidly (three flashes per second), it indicates that the controller is identifying
the drive.
When this LED is lit, it indicates that the DVD drive is in use.
Press this button to release a DVD or CD from the DVD drive.
Light path diagnostics is a system of LEDs on various external and internal
components of the server. When an error occurs, LEDs are lit throughout the
server. By viewing the LEDs in a particular order, you can often identify the
source of the error. See "Light path diagnostics panel" on page 18 for more
information about the light path diagnostics.
This panel contains controls and LEDs that provide information about the status
of the server. For information about the controls and LEDs on the operator
information panel, see "Operator information panel" on page 17.
This button places the system-error LED/check log LED on the operator
information panel into Remind mode. In Remind mode, the system-error LED
flashes once every 2 seconds until the problem is corrected, the server is
restarted, or a new problem occurs.
By placing the system-error LED indicator in Remind mode, you acknowledge
that you are aware of the last failure but will not take immediate action to
correct the problem. The remind function is controlled by the IMM2.
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. The Reset button is in the lower-right corner of the light path diagnostics
panel.
Connect a USB device, such as a USB mouse or keyboard to any of these
connectors.