Owners Manual

Controls and Lights

Blinking amber light indicates a problem

with the system board.

Drive activity light Blue light — Blinking blue light indicates

that the computer is reading data from or

writing data to the hard drive.

Diagnostic lights Four lights located on the front panel of the

computer.

Back of the computer:

Link integrity light on integrated

network adapter

Green — a good 10 Mbps connection exists

between the network and the computer.

Orange — a good 100 Mbps connection

exists between the network and the

computer.

Yellow — a good 1000 Mbps connection

exists between the network and the

computer.

Off (no light) — the computer is not

detecting a physical connection to the

network.

Network activity light on integrated

network adapter

Yellow light — A blinking yellow light

indicates that network activity is present.

Power supply diagnostic light Green light — The power supply is turned on

and is functional. The power cable must be

connected to the power connector (at the

back of the computer) and the electrical

outlet.

NOTE: You can test the health of the power system by pressing the test button.

When the system power supply voltage is within specification, the self-test LED

lights up. If the LED does not light up, the power supply may be defective. AC

power must be connected during this test.