NOTE: After you remove and replace the cover, the chassis intrusion detector causes the following message to appear on the screen at the next system start-up:

ALERT! Cover was previously removed.

The system detects that the new memory does not match the existing system configuration information and generates the following message:

The amount of system memory has changed.

Strike the F1 key to continue, F2 to run the setup utility

5.Press <F2> to enter System Setup, and check the value for System Memory.

The system should have already changed the value of System Memory to reflect the newly installed memory. Verify the new total. If it is correct, skip to step 7.

6.If the memory total is incorrect, turn off and disconnect your computer and peripherals from their electrical outlets. Remove the computer cover, rotate the power supply, and check the installed RIMMs to make sure that they are seated properly in their sockets. Then repeat steps 3, 4, and 5.

7.Reset the chassis intrusion detector by entering System Setup, selecting System Security, and changing Chassis Intrusion to Enabled or Enabled-Silent.

NOTE: If a setup password has been assigned by someone else, contact your network administrator for information on resetting the chassis intrusion detector.

8.When the System Memory total is correct, press <Esc> to exit System Setup.

9.Run the Dell Diagnostics to verify that the RIMMs are operating properly.

Microprocessor/Heat Sink Assembly

To replace a microprocessor, perform the following steps.

CAUTION: The microprocessors can get extremely hot during system operation. To avoid dangerous burns, be sure that the microprocessors have had sufficient time to cool before you touch them.

CAUTION: To avoid the possibility of electric shock, turn off the computer and any peripherals, disconnect them from their electrical outlets, and then wait at least 5 seconds before you remove the computer cover.

NOTE: Dell recommends that only a technically knowledgeable person perform this procedure.

CAUTION: Before you remove the computer cover, see "Precautionary Measures"

NOTE: Before disconnecting a peripheral from the system or removing a component from the system board, verify that the standby power LED on the system board has turned off. For the location of this LED, see Figure 22.

1.Remove the computer cover according to the instructions in "Computer Cover."

2.Rotate the power supply as described in "Power Supply."

3.Remove the existing microprocessor from its connector.

a.Squeeze in on the two pairs of tabs on the airflow shroud and lift it away.

b.Unscrew and remove the two large thumbscrews that secure the heat sink to the system board.

c.Press outward on the guide bracket release latches.

d.Grasp the processor/heat sink assembly firmly, and pull it away from the guide bracket assembly assembly (see Figure 26). You must use up to 15 pounds of force to disengage the processor from the connector.

Figure 26. Microprocessor Removal

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Dell 420 manual Microprocessor/Heat Sink Assembly, Microprocessor Removal
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420 specifications

The Dell 420, 220, and 220S are well-regarded servers in the Dell PowerEdge lineup, showcasing robust performance and reliability for various enterprise applications. These servers are designed to meet the needs of small to medium-sized businesses, as well as larger enterprises seeking reliable computing solutions.

The Dell PowerEdge 420 stands out with its high-density architecture, optimized for virtualization and cloud applications. Equipped with Intel Xeon processors, it offers impressive processing power and scalability, supporting demanding workloads. With the ability to host multiple virtual machines, the 420 provides efficient resource utilization, ensuring that businesses can maximize their IT investments. The server also features advanced storage options, including the support for both traditional hard drives and solid-state drives, allowing for flexible data management and storage strategies.

In contrast, the Dell PowerEdge 220 and 220S are designed with simplicity and cost-effectiveness in mind. These servers feature tower and rack configurations that are ideal for environments with limited space. They leverage Intel's latest processor technologies, enhancing performance while maintaining energy efficiency. This makes the 220 series suitable for a variety of applications, including file and print services, web hosting, and database management.

One of the key characteristics of the Dell 220 and 220S is their ease of use. The systems are designed with straightforward setup procedures, allowing IT administrators to get them up and running quickly. Additionally, these servers come with Dell's OpenManage systems management tools, which offer comprehensive monitoring and management capabilities, enabling IT teams to maintain optimal server performance and reliability.

In terms of networking technologies, all three models support advanced network connectivity options, including multiple Ethernet ports and support for network interface cards (NICs) to ensure high-speed data transmission. Furthermore, they incorporate features such as redundancy in power supplies and cooling systems, enhancing overall system reliability and uptime.

Overall, the Dell 420, 220, and 220S represent a versatile range of server options that cater to varying business needs. With advancements in processing power, storage flexibility, and comprehensive management tools, these servers are well-suited for organizations looking to enhance their IT infrastructure while ensuring performance, reliability, and scalability.
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