Diagnostics And Troubleshooting; Leds - HP mt20 Maintenance And Service Manual

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Diagnostics and troubleshooting

Table 9-1

Power and IDE Flash Activity LEDs

LED

Power LED Off

Power LED On

NOTE:

RJ-45 LEDs are located inside the RJ-45 connector on the top, rear panel of the thin client. The LEDs are visible when the

connector is installed. Blinking green indicates network activity, and amber indicates a 100MB speed connection.

IDE LED is Off

IDE LED blinks white

Status

When the unit is plugged into the wall socket and the Power LED is off, the unit is powered off.

However, the network can trigger a Wake On LAN event in order to perform management functions.

Displays during boot sequence and while the unit is on. During boot sequence, hardware initialization is

processed and startup tests are performed on the following:

●

Processor initialization

●

Memory detection and initialization

●

Video detection and initialization

NOTE:

If one of the tests fails, the unit will simply stop, but the LED will stay on. If the video test fails,

the unit beeps. There are no messages sent to video for any of these failed tests.

NOTE:

After the video subsystem is initialized, anything that fails will have an error message.

When the unit is powered on and the flash activity light is off, then there is no access to the system

flash.

Indicates the system is accessing the internal IDE flash.

LEDs

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