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For the location of the LEDs on the system board, see
Front view
Use this information to view the controls, LEDs, and connectors on the front of the server.
The following illustration shows the controls, LEDs, and connectors on the front of the server.
Hard disk drive
activity LED (green)
Hard disk drive
status LED (amber)
Drive bay 0 Drive bay 2
Rack
release
latch
Drive bay 1
Figure 1. Front view
The following illustration shows the front of the simple-swap server model.
Figure 2. Front view: simple-swap HDD model
• Rack release latches: Press the latches on each front side of the server to remove the server from the
rack.
• 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.
• 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.
• Optional DVD eject button: Press this button to release a DVD or CD from the DVD drive.
• Optional DVD drive activity LED: When this LED is lit, it indicates that the DVD drive is in use.
• Operator information panel: This panel contains controls and LEDs that provide information about the
status of the server.
• 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
panel" on page 12
for more information about the light path diagnostics.
• Video connector: Connect a monitor to this connector. The video connectors on the front and rear of the
server can be used simultaneously.
System x3550 M3Problem Determination and Service Guide
10
Optional
Optional
optical drive
optical drive
activity LED
eject button
Drive bay 3
Optional
Power-control
drive bay
button and LED
"System-board LEDs" on page
USB 1
connector
USB 2
Video
connector
connector
Rack
release
latch
Operator
Operator information
information
panel release latch
panel
21.
"Light path diagnostics
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