Server Controls, Leds, And Power; Front View - IBM System x3550 M3 Type 4254 Problem Determination And Service Manual

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 location of the LEDs on the system board, see
"System-board LEDs" on page 21.

Front view

The following illustration shows the controls, LEDs, and connectors on the front of
the server.
Rack
release
latch
The following illustration shows the front of the simple-swap server model.
v Rack release latches: Press the latches on each front side of the server to
v Hard disk drive activity LEDs: This LED is used on hot-swap SAS or SATA
v Hard disk drive status LEDs: This LED is used on hot-swap SAS or SATA hard
v Optional DVD eject button: Press this button to release a DVD or CD from the
v Optional DVD drive activity LED: When this LED is lit, it indicates that the DVD
v Operator information panel: This panel contains controls and LEDs that provide
v Operator information panel release latch: Slide the blue release latch to the
Hard disk drive
activity LED (green)
Hard disk drive
status LED (amber)
Drive bay 0 Drive bay 2
Drive bay 1 Drive bay 3
remove the server from the rack.
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.
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.
DVD drive.
drive is in use.
information about the status of the server.
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 11 for more
information about the light path diagnostics.
USB 1
connector
Optional Optional
optical drive optical drive
USB 2
activity LED eject button
connector
Power-control
Optional
drive bay button and LED
Video
connector
Rack
release
latch
Operator Operator information
information panel release latch
panel
Chapter 2. Introduction
9