w w w . d e l l . c o m s u p p o r t . d e l l . c o m

Diagnostic Light Codes Before POST

Light Pattern

 

 

Problem Description

Suggested Resolution

 

 

 

 

 

 

 

 

 

 

 

off

No electrical power is

Connect the computer to an electrical outlet. Ensure

 

 

 

 

off

supplied to the computer.

that the front-panel power light is on. If the power light

 

 

 

 

 

is off, ensure that the computer is connected to a

 

 

 

 

off

 

A

B

C

D

 

working electrical outlet and then press the

 

 

 

 

off

 

power button.

 

 

 

 

 

 

If the problem is still not resolved, contact Dell for

 

 

 

 

 

 

technical assistance.

 

 

 

 

 

 

 

 

 

 

 

yellow

The computer is in a normal

Press the power button to turn the computer on.

 

 

 

 

off

off condition; the computer

If the computer does not turn on, ensure that the front-

 

 

 

 

is connected to an

A

B

C

D

off

panel power light is on. If the power light is off, ensure

electrical outlet.

that the computer is connected to a working electrical

 

 

 

 

off

 

 

 

 

 

 

outlet and then press the power button.

 

 

 

 

 

 

 

 

 

 

 

 

If the problem is still not resolved, contact Dell for

 

 

 

 

 

 

technical assistance.

 

 

 

 

 

 

 

 

 

 

 

yellow

The computer is in a reduced

Use one of the appropriate methods to "wake up" the

 

 

 

 

yellow

power or "sleep" state.

computer. See "Advanced Features" in the User’s Guide.

 

 

 

 

 

 

A

B

C

D

off

 

If the problem is not resolved and you are trying to wake

 

the computer with a USB mouse or keyboard, substitute

 

 

 

 

off

 

 

 

 

 

 

the mouse or keyboard with a working PS/2 mouse or

 

 

 

 

 

 

 

 

 

 

 

 

keyboard and then try to wake the computer.

 

 

 

 

 

 

 

 

 

 

 

yellow

The BIOS is not executing.

Ensure that the processor is seated correctly and restart

 

 

 

 

yellow

 

the computer.

 

 

 

 

 

 

A

B

C

D

yellow

 

If the problem is still not resolved, contact Dell for

 

technical assistance.

 

 

 

 

off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

off

A possible power supply or

Perform the procedure in "Power Problems" in the

 

 

 

 

yellow

power cable failure

User’s Guide.

 

 

 

 

has occurred.

 

A

B

C

D

off

If the problem is still not resolved, contact Dell for

 

 

technical assistance.

 

 

 

 

off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

off

A possible system board

Contact Dell for technical assistance.

 

 

 

 

off

failure has occurred.

 

 

 

 

 

 

 

A

B

C

D

yellow

 

 

 

 

 

 

off

 

 

 

 

 

 

 

 

 

= yellow = green = off

30

Quick Reference Guide

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Image 30
Dell 470, 670 manual = yellow = green = off, Diagnostic Light Codes Before Post
Page 29 Page 31

670, 470 specifications

The Dell PowerEdge 470 and 670 servers stand out in the realm of enterprise computing solutions, catering to diverse business needs with robust performance and reliable technology. These two models serve as essential tools for organizations focusing on scalability, manageability, and energy efficiency.

The Dell PowerEdge 470 is best known for its ability to handle moderate workloads while providing exceptional reliability. It incorporates dual Intel Xeon processors, which enhance its computational power and enable efficient multi-threading capabilities. This makes the 470 particularly suitable for tasks such as database management and virtualization, where performance is paramount. Its support for up to 128GB of RAM ensures that even memory-intensive applications run smoothly.

On the other hand, the Dell PowerEdge 670 takes performance up a notch, accommodating larger workloads and more demanding applications. With support for dual Intel Xeon processors and an expanded memory capacity of up to 256GB, the 670 is a powerhouse capable of handling complex calculations and heavy data traffic. This server model features advanced cooling technologies that optimize airflow and maintain optimal operating temperatures, thereby prolonging hardware longevity.

Both models exhibit a modular design, which simplifies upgrades and maintenance. This design philosophy is complemented by Dell’s integrated systems management tools, such as the Dell OpenManage suite, allowing administrators to monitor server health, deployments, and updates effortlessly. Enhanced security features, including optional hardware-based Trusted Platform Module (TPM), ensure robust protection of sensitive data against unauthorized access.

Energy efficiency is another appealing aspect of the 470 and 670 series. These servers are equipped with power-efficient components and power management features that reduce overall energy consumption, leading to cost savings for businesses.

When it comes to connectivity, both servers support a plethora of network options, including Gigabit Ethernet, which facilitates seamless integration into existing infrastructure. They also feature hot-swappable drives, enabling users to replace failed components without downtime, which is critical for mission-critical applications.

In conclusion, the Dell PowerEdge 470 and 670 servers offer a compelling combination of performance, reliability, and manageability. Their design, advanced technologies, and focus on energy efficiency make them ideal choices for enterprises looking to optimize their IT infrastructure while catering to evolving workload demands.
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