Diagnostic Lights

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.

To help troubleshoot a problem, your computer has four lights labeled 1, 2, 3, and 4 on the front panel (see Front View). When the computer starts normally, the lights flash before turning off. If the computer malfunctions, the sequence of the lights help to identify the problem.

NOTE: After the computer completes POST, all four lights turn off before booting to the operating system.

Light Pattern

Problem

Suggested Resolution

 

Description

 

The computer is in a normal off condition or a possible pre- BIOS failure has occurred.

The diagnostic lights are not lit after the system successfully boots to the operating system.

A possible processor failure has occurred.

Memory modules are detected, but a memory failure has occurred.

Plug the computer into a working electrical outlet (see "Power Problems" in your Owner's Manual).

If the problem persists, contact Dell (see "Contacting Dell" in your Owner's Manual).

Reseat the processor (see Processor).

If the problem persists, contact Dell (see "Contacting Dell" in your Owner's Manual).

If two or more memory modules are installed, remove the modules (see Removing Memory), then reinstall one module (see Installing Memory) and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error.

If available, install working memory of the same type into your computer (see Installing Memory).

If the problem persists, contact Dell (see "Contacting Dell" in your Owner's Manual).

A possible graphics card failure has occurred.

A possible floppy drive or hard drive failure has occurred.

A possible USB failure has occurred.

No memory modules are detected.

Reseat any installed graphics cards (see Cards).

If available, install a working graphics card into your computer.

If the problem persists, contact Dell (see "Contacting Dell" in your Owner's Manual).

Reseat all power and data cables.

Reinstall all USB devices and check all cable connections.

If two or more memory modules are installed, remove the modules (see Removing Memory), then reinstall one module (see Installing Memory) and restart the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error.

If available, install working memory of the same type into your computer (see Installing Memory).

If the problem persists, contact Dell (see "Contacting Dell" in your Owner's Manual).

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Dell DCDO, 710 H2C service manual Diagnostic Lights, Light Pattern Problem Suggested Resolution Description

710 H2C, DCDO specifications

The Dell DCDO, C100J, represents a significant advancement in the realm of data center technology, focusing on providing enhanced operational efficiency, scalability, and improved performance. Designed with modern enterprises in mind, the C100J integrates cutting-edge features that cater to an array of data center needs.

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In summary, the Dell DCDO, C100J encapsulates a blend of performance, flexibility, and efficiency. Its modular design, high-speed processing capabilities, advanced networking features, and robust management tools make it an ideal choice for enterprises aiming to enhance their data center operations while preparing for future growth.