Dell T310 owner manual lights display error codes during system startup

Item Indicator, Button, or Icon		Description
	Connector
4	LED or LCD panel	LED panel — The four diagnostic indicator
		lights display error codes during system startup.
		See "Diagnostic Lights (Optional)" on page 23.
		LCD panel — Provides system ID, status
		information, and system error messages.
		The LCD lights blue during normal system
		operation. The LCD lights amber when the
		system needs attention, and the LCD panel
		displays an error code followed by
		descriptive text.
		NOTE: If the system is connected to AC power
		and an error has been detected, the LCD lights
		amber regardless of whether the system has
		been powered on.
5	LCD menu buttons	Allows you to navigate the control panel
		LCD menu.
6	System identification	The identification button on the front panel can
	button	be used to locate a particular system. When the
		button is pushed, the LCD panel on the front
		flashes blue until the button is pushed again.
7	Power-on indicator,	The power-on indicator lights when the system
	power button	power is on.

The power button controls the DC power supply output to the system.

NOTE: When powering on the system, the video monitor can take several seconds up to over 2 minutes to display an image, depending on the amount of memory installed in the system.

NOTE: On ACPI-compliant operating systems, turning off the system using the power button causes the system to perform a graceful shutdown before power to the system is turned off.

NOTE: To force an ungraceful shutdown, press and hold the power button for five seconds.

About Your System

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