Server controls, LEDs, and power
This information is an introduction to the server controls, LEDs, and powering the
system.
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 33.
Front view
This information provides an overview to 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.
Video
connector
USB 1
connector
USB 2
connector
0
12
3
4
56
7
8
910
11 12
13
14
15
Drive bays
Rack release
latch
Rack
release
latch
Power-on
button/LED
Locator
button/LED
Operator
information
panel release
latch
CD/DVD drive
activity LED
CD/DVD drive
eject button
Drive activity
LED (green)
Drive status
LED (yellow)
Electrostatic-
discharge
connector
v Rack release latches: Press the latch on each front side of the server to slide the
server out of the rack.
v Electrostatic-discharge connector: Connect an electrostatic-discharge wrist strap
to this connector when you work with static-sensitive devices.
v Drive status LEDs: These LEDs are on SAS or SATA hard disk drives and solid
state drives. When one of these LEDs is lit, it indicates that the drive has failed.
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 Drive activity LEDs: These LEDs are on SAS or SATA hard disk drives and solid
state drives. Each hot-swap drive has an activity LED, and when this LED is
flashing, it indicates that the drive is in use.
v CD/DVD eject button: Press this button to release a DVD or CD from the
CD/DVD drive.
v CD/DVD drive activity LED: When this LED is lit, it indicates that the
CD-RW/DVD drive is in use.
v Operator information panel: 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 18.
v Operator information panel release button: Press the blue release button and
pull out the light path diagnostics panel to view the light path diagnostics LEDs
Chapter 1. The System x3750 M4 Types 8722 and 8733 server 17
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