IBM System x3550 M3, Installation And User Manual

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Server controls, LEDs, and power
This section describes the controls and light-emitting diodes (LEDs) and how to turn
the server on and off. For the locations of other LEDs on the system board, see
“System-board LEDs” on page 43.
Front view
The following illustration shows the controls, LEDs, and connectors on the front of
the hot-swap server model.
Video
connector
USB 1
connector
Operator
information
panel
Drive bay 0 Drive bay 2
Drive bay 1 Drive bay 3
Rack
release
latch Rack
release
latch
Hard disk drive
activity LED (green)
Hard disk drive
status LED (amber)
Optional
optical drive
eject button Optional
optical drive
activity LED
Power-control
button and LED Operator information
panel release latch
USB 2
connector
Optional
drive bay
v Rack release latches: Press the latches on each front side of the server to
remove the server from the rack.
v
Hard disk drive status LEDs: 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.
v
Hard disk drive activity LEDs: 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.
v Optional DVD eject button: Press this button to release a DVD or CD from the
optional DVD drive.
v
Optional DVD drive activity LED: When this LED is lit, it indicates that the
optional DVD drive is in use.
v Operator information panel: This panel contains controls and LEDs that
provides 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 15.
v Operator information panel release latch: Slide the blue release latch to the
left to pull out the light path diagnostics panel and view the light path diagnostics
LEDs and buttons. See “Light path diagnostics panel” on page 15 and the
Problem Determination and Service Guide for more information about the light
path diagnostics.
v
Video connector: Connect a monitor to this connector. The video connectors on
the front and rear of the server can be used simultaneously.
Note: The maximum video resolution is 1600 x 1200 at 75 Hz.
v
USB connectors: Connect a USB device, such as a USB mouse or keyboard to
any of these connectors.
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IBM System x3550 M3 Types 4254 and 7944: Installation and User’s Guide