Dell K8504 manual Code. For more information, see Diagnostic Lights on

5	diagnostic lights	Use these lights to help you troubleshoot a computer problem based on the diagnostic
		code. For more information, see "Diagnostic Lights" on page 36.
6	power button	Press this button to turn on the computer.
		NOTICE: To avoid losing data, do not turn off the computer by pressing the power
		button for 6 seconds or longer. Instead, perform an operating system shutdown.
		NOTICE: If your operating system has ACPI enabled, when you press the power
		button the computer will perform an operating system shutdown.
7	power light	The power light illuminates and blinks or remains solid to indicate different operating
		states:
		• No light — The computer is turned off.
		• Steady green — The computer is in a normal operating state.
		• Blinking green — The computer is in a power-saving mode.
		• Blinking or solid amber — See "Power Problems" in your online User’s Guide.
		To exit from a power-saving mode, press the power button or use the keyboard or the
		mouse if it is configured as a wake device in the Windows Device Manager. For more
		information about sleep modes and exiting from a power-saving mode, see "Power
		Management" in your online User’s Guide.
		See "System Lights" on page 35 for a description of power light patterns that can help
		you troubleshoot problems with your computer.
8	hard-drive activity light	This light flickers when the hard drive is in use.
9	headphone connector	Use the headphone connector to attach headphones and most kinds of speakers.
10	microphone connector	Use the microphone connector to attach a microphone.

Quick Reference Guide

9