4

Troubleshooting

Diagnostic LEDs

NOTE: The diagnostic LEDs only serve as an indicator of the progress through the Power-on Self-Test (POST) process. These LEDs do not indicate the problem that caused the POST routine to stop.

The diagnostic LEDs are located on the front of the chassis next to the power button. These diagnostic LEDs are only active and visible during the POST process. Once the operating system starts to load, they turn off and are no longer visible.

The system now includes pre-POST and POST LEDs in an attempt to help identifying a possible problem with the system easier and more accurate.

NOTE: The diagnostic lights will blink when the power button is amber or off, and will not blink when it is blue. This has no other significance.

Diagnostic Light Patterns

LED

Power Button

 

Problem

The computer is either turned off or is not receiving power.

Description

 

Troubleshooting

Re-seat the power cable in the power connector at the back of the computer and the

Steps

electrical outlet.

 

• Bypass power strips, power extension cables, and other power protection devices to

 

verify that the computer turns on properly.

 

• Ensure that any power strips being used are plugged into an electrical outlet and are

 

turned on.

 

• Ensure that the electrical outlet is working by testing it with another device, such as a

 

lamp.

 

• Ensure that the main power cable and front panel cable are securely connected to the

 

system board.

LED

 

Power Button

 

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Dell 3010 owner manual Diagnostic LEDs, Diagnostic Light Patterns

3010 specifications

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